编译和运行开源流程引擎camunda源代码

使用camunda开源工作流引擎有多种方式，包括：通过docker运行、使用springboot集成、部署camunda发行包、基于源代码编译运行等多种方式，其中，通过源代码编译集成整合方式，是最复杂的一种方式，文本重点介绍如何通过camunda7.19源代码编译，集成整合到自己的项目工程里。

下载camunda源代码

camunda开源github下载地址：https://github.com/camunda/camunda-bpm-platform

我选择camunda最后一个可支持JDK1.8的稳定版本camunda7.19

01-源码下载

camunda-bpm-platform-7.19.0版本的下载地址：

https://github.com/camunda/camunda-bpm-platform/releases/tag/7.19.0

编译camunda源代码

下载下来是一个20多M的zip压缩包，直接解压即可。

02-源码包结构

Camunda7.19源代码核心包说明：

maven工程名称	说明
camunda-database-settings	camunda支持的各种数据库定义
camunda-engine	Camunda BPMN流程引擎核心包
camunda-engine-dmn	Camunda dmn引擎核心包
camunda-engine-plugins	camunda支持的插件包
camunda-engine-rest-core	camunda发布rest服务的核心包
camunda-engine-spring	camunda集成spring框架的包
camunda-model-apis	camunda中各种模型API接口包
camunda-parent	Camunda maven工程父包，主要定义第三方Jar包版本
camunda-qa	camunda与各种环境的集成测试包
camunda-bpm-spring-boot-starter	camunda集成springboot框架的包
camunda-webapp	camunda发布web程序构建包
webapps\frontend	camunda的前端代码包，基于angular开发

首先要编译源代码，要确保下载的源代码可编译通过，建议使用maven命令行编译运行，这个时间预计1个小时左右，跟你的网络有关系，也可能有的包下载不下来失败，可多尝试几次。

我本地使用的Java jdk版本是java version "11.0.6"，maven版本是Apache Maven 3.8.2，理论上jdk1.8版本以上都可以。

使用命令行cd到camunda-bpm-platform-7.19.0根目录下，使用maven命令执行编译：

mvn clean install -DskipTests=true

由于camunda源代码中有大量的测试用例，编译比较耗时，这里通过-DskipTests=true命令跳过测试用例执行。

注意：以下几个module执行涉及到第三方Jar包下载不了可能会报错，这几个跟Javaee相关的集成模块可以pom.xml中注释掉，不影响后续使用。

<module>javaee/ejb-service</module>

<module>javaee/ejb-client</module>

<module>javaee/ejb-client-jakarta</module>

<module>javaee/jobexecutor-ra</module>

<module>javaee/jobexecutor-rar</module>

我们也不会使用camunda的web前端，webapps也可注释掉。

<module>webapps</module>

最后执行mvn clean install -DskipTests=true成功的结果：

50-maven编译源码

[INFO] Reactor Summary for Camunda Platform - Root Pom 7.19.0:

[INFO]

[INFO] Camunda Platform - Root Pom ........................ SUCCESS [ 2.687 s]

[INFO] Camunda Platform - Parent Pom ...................... SUCCESS [ 0.000 s]

[INFO] Camunda Platform - database settings ............... SUCCESS [ 0.032 s]

[INFO] camunda Model APIs ................................. SUCCESS [ 0.031 s]

[INFO] Camunda Platform - Xml Model API ................... SUCCESS [ 6.407 s]

[INFO] Camunda Platform - ArchUnit ........................ SUCCESS [ 0.954 s]

[INFO] Camunda Platform - BPMN Model API .................. SUCCESS [ 12.806 s]

[INFO] Camunda Platform - CMMN Model API .................. SUCCESS [ 5.918 s]

[INFO] camunda Commons - Typed Values ..................... SUCCESS [ 5.595 s]

[INFO] Camunda Platform - DMN Model API ................... SUCCESS [ 5.078 s]

[INFO] camunda DMN - engine - root ........................ SUCCESS [ 0.062 s]

[INFO] camunda DMN - engine FEEL - API .................... SUCCESS [ 0.739 s]

[INFO] camunda DMN - engine FEEL - JUEL ................... SUCCESS [ 8.282 s]

[INFO] camunda DMN - engine FEEL - SCALA .................. SUCCESS [ 1.516 s]

[INFO] camunda DMN - engine ............................... SUCCESS [ 3.933 s]

[INFO] Camunda Test Utils - Testcontainers ................ SUCCESS [ 0.773 s]

[INFO] Camunda Platform - engine .......................... SUCCESS [02:14 min]

[INFO] Camunda Platform - engine - Spring ................. SUCCESS [ 3.640 s]

[INFO] Camunda Platform - engine plugins .................. SUCCESS [ 0.086 s]

[INFO] Camunda Platform - engine plugins - spin ........... SUCCESS [ 1.106 s]

[INFO] Camunda Platform - engine plugins - connect ........ SUCCESS [ 0.267 s]

[INFO] Camunda Platform - Assert - Root ................... SUCCESS [ 0.048 s]

[INFO] Camunda Platform - Assert .......................... SUCCESS [ 0.852 s]

[INFO] Camunda Platform - Spring Boot Starter - Root Pom .. SUCCESS [ 0.734 s]

[INFO] Camunda Platform - Spring Boot Starter - Test ...... SUCCESS [ 0.714 s]

[INFO] Camunda Platform - Spring Boot Starter ............. SUCCESS [ 4.950 s]

[INFO] Camunda Platform - Bom ............................. SUCCESS [ 0.077 s]

[INFO] Camunda Platform - Core - Internal Dependencies .... SUCCESS [ 0.040 s]

[INFO] Camunda Platform - engine - REST - Root ............ SUCCESS [ 0.036 s]

[INFO] Camunda Platform - engine - REST ................... SUCCESS [ 8.516 s]

[INFO] Camunda Platform - Spring Boot Starter - Rest ...... SUCCESS [ 0.283 s]

[INFO] Camunda Platform - Java External Task Client - ROOT SUCCESS [ 0.050 s]

[INFO] Camunda Platform - Java External Task Client - QA .. SUCCESS [ 0.051 s]

[INFO] Camunda Platform - Java External Task Client - QA VARIABLE TEST SUCCESS [ 2.222 s]

[INFO] Camunda Platform - engine - Cdi .................... SUCCESS [ 10.352 s]

[INFO] Camunda Platform - engine plugins - identity - ldap SUCCESS [ 0.704 s]

[INFO] Camunda Platform - License Book .................... SUCCESS [ 1.496 s]

[INFO] Camunda Platform - tomcat .......................... SUCCESS [ 0.044 s]

[INFO] Camunda Platform - tomcat Assembly ................. SUCCESS [ 15.426 s]

[INFO] Camunda Platform - engine - REST - Assembly ........ SUCCESS [ 7.909 s]

[INFO] Camunda Platform - Java External Task Client - CLIENT SUCCESS [ 2.110 s]

[INFO] Camunda Platform - Spring Boot Starter - Client - Spring SUCCESS [ 0.397 s]

[INFO] Camunda Platform - Spring Boot Starter - Client - Spring Boot SUCCESS [ 0.493 s]

[INFO] Camunda Platform - Spring Boot Starter - QA - Root Pom SUCCESS [ 0.085 s]

[INFO] Camunda Platform - Spring Boot Starter - QA - Simple SUCCESS [ 0.142 s]

[INFO] Camunda Platform - Spring Boot Starter - QA - Request Scope SUCCESS [ 0.144 s]

[INFO] Camunda Platform - Spring Boot Starter - QA - Plugins SUCCESS [ 0.046 s]

[INFO] Camunda Platform - Spring Boot Starter - QA - Plugins - Spin SUCCESS [ 0.033 s]

[INFO] Camunda Platform - Spring Boot Starter - QA - Plugins - Spin Json Jackson SUCCESS [ 0.204 s]

[INFO] Camunda Platform - Spring Boot Starter - QA - Plugins - Spin All SUCCESS [ 0.144 s]

[INFO] Camunda Platform - Spring Boot Starter - QA - Liquibase SUCCESS [ 0.250 s]

[INFO] Camunda Platform - webapp - webjar ................. SUCCESS [ 7.726 s]

[INFO] Camunda Platform - Spring Boot Starter - Webapps Core SUCCESS [ 0.291 s]

[INFO] Camunda Platform - Spring Boot Starter - Webapps ... SUCCESS [ 0.203 s]

[INFO] Camunda Platform - Example - Root .................. SUCCESS [ 0.053 s]

[INFO] Camunda Platform - Example - Invoice ............... SUCCESS [ 0.559 s]

[INFO] Camunda Platform - Spring Boot Starter - QA - Webapps SUCCESS [ 0.031 s]

[INFO] Camunda Platform - Spring Boot Starter - QA - Webapps Invoice Example SUCCESS [ 0.156 s]

[INFO] Camunda Platform - Spring Boot Starter - QA - Webapps Runtime SUCCESS [ 0.094 s]

[INFO] Camunda Platform - Quarkus Extension - Parent ...... SUCCESS [ 0.048 s]

[INFO] Camunda Platform - Quarkus Extension - Engine - Parent SUCCESS [ 0.046 s]

[INFO] Camunda Platform - Quarkus Extension - Engine - Runtime SUCCESS [ 1.784 s]

[INFO] Camunda Platform - Quarkus Extension - Engine - Deployment SUCCESS [ 1.618 s]

[INFO] Camunda Platform - Quarkus Extension - Engine - CDI QA SUCCESS [ 0.427 s]

[INFO] Camunda Platform - QA .............................. SUCCESS [ 0.046 s]

[INFO] Camunda Platform - QA - ensure clean db plugin ..... SUCCESS [ 0.117 s]

[INFO] Camunda Platform - QA Wildfly Test Runtime ......... SUCCESS [ 0.433 s]

[INFO] Camunda Platform - QA Wildfly 26 Test Runtime ...... SUCCESS [ 0.396 s]

[INFO] Camunda Platform - QA Tomcat Test Runtime .......... SUCCESS [ 0.050 s]

[INFO] Camunda Platform - QA Tomcat Vanilla Test Runtime .. SUCCESS [ 0.046 s]

[INFO] Camunda Platform - QA Wildfly Vanilla Test Runtime . SUCCESS [ 0.032 s]

[INFO] Camunda Platform - QA Wildfly 26 Vanilla Test Runtime SUCCESS [ 0.033 s]

[INFO] Camunda Platform - QA Integration Tests - Webapps Root SUCCESS [ 2.216 s]

[INFO] Camunda Platform - QA Integration Tests - Webapps ITs SUCCESS [ 0.698 s]

[INFO] Camunda Platform - Client .......................... SUCCESS [ 0.119 s]

[INFO] Camunda Platform - QA Integration Tests - Engine ... SUCCESS [ 4.576 s]

[INFO] Camunda Platform - EJB Client Jakarta .............. SUCCESS [ 1.170 s]

[INFO] Camunda Platform - engine - Cdi - Jakarta .......... SUCCESS [ 2.891 s]

[INFO] Camunda Platform - QA Integration Tests - Engine - Jakarta SUCCESS [ 5.385 s]

[INFO] Camunda Platform - QA - upgrade - database ......... SUCCESS [ 0.094 s]

[INFO] Camunda Platform - QA - upgrade - scenario util .... SUCCESS [ 0.250 s]

[INFO] Camunda Platform - QA - upgrade - instance migration SUCCESS [ 0.062 s]

[INFO] Camunda Platform - QA - upgrade - instance migration - test fixture - 7.2.0 SUCCESS [ 1.390 s]

[INFO] Camunda Platform - QA - upgrade - instance migration - test fixture - 7.3.0 SUCCESS [ 0.438 s]

[INFO] Camunda Platform - QA - upgrade - instance migration - test fixture - 7.4.0 SUCCESS [ 0.172 s]

[INFO] Camunda Platform - QA - upgrade - instance migration - test fixture - 7.5.0 SUCCESS [ 0.312 s]

[INFO] Camunda Platform - QA - upgrade - instance migration - test fixture - 7.6.0 SUCCESS [ 0.328 s]

[INFO] Camunda Platform - QA - upgrade - instance migration - test fixture - 7.7.0 SUCCESS [ 0.375 s]

[INFO] Camunda Platform - QA - upgrade - instance migration - test fixture - 7.8.0 SUCCESS [ 0.485 s]

[INFO] Camunda Platform - QA - upgrade - instance migration - test fixture - 7.9.0 SUCCESS [ 0.484 s]

[INFO] Camunda Platform - QA - upgrade - instance migration - test fixture - 7.10.0 SUCCESS [ 0.641 s]

[INFO] Camunda Platform - QA - upgrade - instance migration - test fixture - 7.11.0 SUCCESS [ 0.312 s]

[INFO] Camunda Platform - QA - upgrade - instance migration - test fixture - 7.12.0 SUCCESS [ 0.844 s]

[INFO] Camunda Platform - QA - upgrade - instance migration - test fixture - 7.13.0 SUCCESS [ 0.609 s]

[INFO] Camunda Platform - QA - upgrade - instance migration - test fixture - 7.14.0 SUCCESS [ 0.828 s]

[INFO] Camunda Platform - QA - upgrade - instance migration - test fixture - 7.15.0 SUCCESS [ 0.859 s]

[INFO] camunda BPM - QA - upgrade - instance migration - test fixture - 7.16.0 SUCCESS [ 0.844 s]

[INFO] camunda BPM - QA - upgrade - instance migration - test fixture - 7.17.0 SUCCESS [ 0.640 s]

[INFO] camunda BPM - QA - upgrade - instance migration - test fixture - 7.18.0 SUCCESS [ 0.469 s]

[INFO] camunda BPM - QA - upgrade - instance migration - test fixture - 7.19.0 SUCCESS [ 0.172 s]

[INFO] Camunda Platform - QA - upgrade - instance migration - test SUCCESS [ 0.516 s]

[INFO] Camunda Platform - QA - upgrade - rolling update ... SUCCESS [ 0.054 s]

[INFO] Camunda Platform - QA - upgrade - rolling update util SUCCESS [ 0.133 s]

[INFO] Camunda Platform - QA - upgrade - rolling update - create old engine SUCCESS [ 0.219 s]

[INFO] Camunda Platform - QA - upgrade - rolling update - create new engine SUCCESS [ 0.187 s]

[INFO] Camunda Platform - QA - upgrade - rolling update - test old engine SUCCESS [ 0.203 s]

[INFO] Camunda Platform - QA - test new schema with old engine SUCCESS [ 0.063 s]

[INFO] Camunda Platform - QA Performance Tests Engine ..... SUCCESS [ 9.141 s]

[INFO] Large Data Tests ................................... SUCCESS [ 0.203 s]

[INFO] camunda DMN - engine - bom ......................... SUCCESS [ 0.031 s]

[INFO] Camunda Platform - JUnit 5 Extension ............... SUCCESS [ 0.242 s]

[INFO] Camunda Platform - QA - Assert ..................... SUCCESS [ 0.141 s]

[INFO] Camunda Platform - engine - Cdi - Compatbility Test Weld 3 SUCCESS [ 0.443 s]

[INFO] Camunda Platform - engine - CDI - Root ............. SUCCESS [ 0.041 s]

[INFO] Camunda Platform - engine - Compatbility Test Spring 4 SUCCESS [ 0.328 s]

[INFO] Camunda Platform - engine - Spring - Root .......... SUCCESS [ 0.032 s]

[INFO] Camunda Platform - engine - REST - OpenAPI (JSON Generator) SUCCESS [ 0.109 s]

[INFO] Camunda Platform - engine - REST - OpenAPI ......... SUCCESS [ 41.661 s]

[INFO] Camunda Platform - engine - REST Jakarta ........... SUCCESS [01:28 min]

[INFO] Camunda Platform - engine - REST - Assembly Jakarta SUCCESS [ 2.850 s]

[INFO] Camunda Platform - Example - Invoice Jakarta ....... SUCCESS [ 2.167 s]

[INFO] Camunda Platform - JBoss ........................... SUCCESS [ 0.019 s]

[INFO] Camunda Platform - webapp - JBoss .................. SUCCESS [ 5.335 s]

[INFO] Camunda Platform - webapp - JBoss Standalone ....... SUCCESS [ 8.444 s]

[INFO] Camunda Platform - SQL scripts ..................... SUCCESS [ 15.140 s]

[INFO] Camunda Platform - webapp - Tomcat ................. SUCCESS [ 3.849 s]

[INFO] Camunda Platform - tomcat Distro ................... SUCCESS [ 39.697 s]

[INFO] Camunda Platform - webapp - Tomcat Standalone ...... SUCCESS [ 7.264 s]

[INFO] Camunda Platform - Run - Root ...................... SUCCESS [ 0.022 s]

[INFO] Camunda Platform - Run - Modules ................... SUCCESS [ 0.038 s]

[INFO] Camunda Platform - Run - Module REST ............... SUCCESS [ 12.390 s]

[INFO] camunda Platform - Run - Module Swagger UI ......... SUCCESS [17:24 min]

[INFO] Camunda Platform - Run - Module Example Invoice .... SUCCESS [ 8.375 s]

[INFO] Camunda Platform - Run - Core ...................... SUCCESS [ 9.920 s]

[INFO] Camunda Platform - Run - Assembly .................. SUCCESS [ 9.158 s]

[INFO] Camunda Platform - Run - QA ........................ SUCCESS [ 0.029 s]

[INFO] Camunda Platform - Run - QA - Integration Tests .... SUCCESS [12:17 min]

[INFO] Camunda Platform - Run - Module Webapps ............ SUCCESS [ 0.308 s]

[INFO] Camunda Platform - Run - Distribution .............. SUCCESS [ 30.881 s]

[INFO] Camunda Platform - Run - QA - Runtime .............. SUCCESS [ 0.566 s]

[INFO] Camunda Platform - Wildfly ......................... SUCCESS [ 0.056 s]

[INFO] Camunda Platform - Wildfly Subsystem ............... SUCCESS [ 26.416 s]

[INFO] Camunda Platform - Wildfly Modules ................. SUCCESS [ 15.832 s]

[INFO] Camunda Platform - Wildfly Assembly ................ SUCCESS [01:23 min]

[INFO] Camunda Platform - webapp - WildFly ................ SUCCESS [ 9.859 s]

[INFO] Camunda Platform - Wildfly Distro .................. SUCCESS [01:34 min]

[INFO] Camunda Platform - Wildfly 26 ...................... SUCCESS [ 0.043 s]

[INFO] Camunda Platform - Wildfly 26 Subsystem ............ SUCCESS [ 28.524 s]

[INFO] Camunda Platform - Wildfly 26 Modules .............. SUCCESS [ 22.495 s]

[INFO] ------------------------------------------------------------------------

[INFO] BUILD SUCCESS

[INFO] ------------------------------------------------------------------------

[INFO] Total time: 44:25 min

[INFO] Finished at: 2024-02-17T13:45:01+08:00

[INFO] ---------------------------------------------------------------------

这是在我本地笔记本上编译的结果，用了44分钟完成了camunda7.19源代码的编译和打包。

构建camunda源代码工程

Camunda 7.19源代码一共有178个maven工程和1个angular前端工程，这么多工程中包括了大量的QA测试包、JDK不同版本适配（比如：Java EE和Jakarta EE）、多种中间件部署包（比如：Tomcat、Jboss、wildfly）、spring和springboot集成适配包等，我们仅仅需要把Camunda的流程引擎包和REST服务包的源代码拿来使用，下面通过IDEA开发工具，从代码层面整合Camunda的流程引擎源代码。

3.1、Camunda包结构分析

Camunda 7.19源代码一共有178个maven工程和1个angular前端工程，他们之间有什么样的依赖和引用关系，我们首先要分析清楚，然后才能把流程引擎和resf服务包的源代码拷贝过来使用。

下面我们就分析camunda-bpm-platform-7.19.0源代码中pom工程的引用和依赖关系。

首先，打开camunda-bpm-platform-7.19.0\engine工程的pom.xml，发现该工程继承了父工程camunda-database-settings。

13-pom包依赖分析

打开父工程camunda-bpm-platform-7.19.0\database的pom.xml，发现它又继承了父工程camunda-parent。

14-pom包依赖分析2

打开父工程camunda-bpm-platform-7.19.0\parent的pom.xml，发现它又继承了父工程camunda-root。

15-pom包依赖分析3

打开父工程camunda-bpm-platform-7.19.0根目录下的pom.xml，发现它又继承了父工程camunda-bpm-release-parent，该工程没有源代码，就是camunda官方定义的发布版本的顶级工程了，是通过mvn依赖动态下载的。

16-pom包依赖分析4

至此，我们从camunda流程引擎内核包入手分析，找到了相关maven工程父子继承关系，即engine（BPMN流程引擎核心工程）—》database（多种数据库配置工程）—》parent（第三方Jar配置工程）—》root（camunda源代码聚合工程）。

有了以上分析，下面我们在自己的笔记本电脑上新建Java工程，把camunda核心源代码拷贝进来编译通过，最后通过springboot方式，把camunda源代码运行起来。

3.2、新建maven聚合工程

新建pom父工程，命名为camunda7-source-dev，version设置为7.19-SNAPSHOT，注意packaging的值为pom，该工程为聚合项目。

10-新建pom父工程

该工程的目的就是多个maven工程聚合，也可以根据需要配置一些manve的全局设置，比如仓库地址。

Pom.xml源文件如下：

3.3、新建maven父工程

通过以上分析camunda工程结构，发现camunda-engine流程引擎依赖了camunda-parent工程，而camunda-parent工程里定义了流程引擎需要的第三方Jar。这里我们也参考camunda-parent工程，新建一个自己的parent工程。

在刚才建的聚合工程camunda7-source-dev下，新建一个camunda-parent子工程。

65-parent父工程

我们需要把camunda-bpm-platform-7.19.0\parent\pom.xml文件内容拷贝过来，最后的pom.xml源文件如下：

3.4、新建流程引擎源码工程

在聚合工程camunda7-source-dev下，新建一个camunda-engine流程引擎子工程，需要把该工程的父工程配置为camunda-parent。

66-流程引擎工程

我们需要把camunda-bpm-platform-7.19.0\engine\pom.xml文件内容拷贝过来，最后的pom.xml源文件如下：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.yuncheng</groupId>
<artifactId>camunda-parent</artifactId>
<version>7.19-SNAPSHOT</version>
<relativePath>../camunda-parent</relativePath>
</parent>

<artifactId>camunda-engine</artifactId>

<properties>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<test.includes />

<test.excludes>$.</test.excludes>
<history.level>full</history.level>
<mail.server.port>5025</mail.server.port>
<authorizationCheckRevokes>auto</authorizationCheckRevokes>
<jdbcBatchProcessing>true</jdbcBatchProcessing>


<skip-third-party-bom>false</skip-third-party-bom>

<camunda.artifact>org.camunda.bpm</camunda.artifact>
<version.camunda>7.19.0</version.camunda>
</properties>

<dependencyManagement>
<dependencies>

<dependency>
<groupId>org.camunda.bpm</groupId>
<artifactId>camunda-core-internal-dependencies</artifactId>
<version>${version.camunda}</version>
<scope>import</scope>
<type>pom</type>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-framework-bom</artifactId>
<version>${version.spring.framework}</version>
<type>pom</type>
<scope>import</scope>
</dependency>

<dependency>
<groupId>jakarta.platform</groupId>
<artifactId>jakarta.jakartaee-bom</artifactId>
<version>${version.jakarta-ee-spec}</version>
<type>pom</type>
<scope>import</scope>
</dependency>

</dependencies>
</dependencyManagement>

<dependencies>



<dependency>
<groupId>org.camunda.bpm.model</groupId>
<artifactId>camunda-bpmn-model</artifactId>
</dependency>

<dependency>
<groupId>org.camunda.bpm.model</groupId>
<artifactId>camunda-cmmn-model</artifactId>
</dependency>

<dependency>
<groupId>org.camunda.bpm.dmn</groupId>
<artifactId>camunda-engine-dmn</artifactId>
<exclusions>
<exclusion>
<groupId>de.odysseus.juel</groupId>
<artifactId>juel-api</artifactId>
</exclusion>
<exclusion>
<groupId>de.odysseus.juel</groupId>
<artifactId>juel-spi</artifactId>
</exclusion>
<exclusion>
<groupId>de.odysseus.juel</groupId>
<artifactId>juel-impl</artifactId>
</exclusion>

<exclusion>
<groupId>com.lihaoyi</groupId>
<artifactId>fastparse_2.13</artifactId>
</exclusion>
<exclusion>
<groupId>com.lihaoyi</groupId>
<artifactId>sourcecode_2.13</artifactId>
</exclusion>
<exclusion>
<groupId>com.lihaoyi</groupId>
<artifactId>geny_2.13</artifactId>
</exclusion>
<exclusion>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
</exclusion>
</exclusions>
</dependency>

<dependency>
<groupId>org.camunda.commons</groupId>
<artifactId>camunda-commons-logging</artifactId>
</dependency>

<dependency>
<groupId>org.camunda.commons</groupId>
<artifactId>camunda-commons-typed-values</artifactId>
</dependency>

<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
</dependency>

<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
</dependency>

<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
</dependency>

<dependency>
<groupId>org.camunda.connect</groupId>
<artifactId>camunda-connect-core</artifactId>
</dependency>

<dependency>
<groupId>org.camunda.connect</groupId>
<artifactId>camunda-connect-connectors-all</artifactId>
<scope>runtime</scope>
</dependency>



<dependency>
<groupId>org.apache.ant</groupId>
<artifactId>ant</artifactId>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.0-api</artifactId>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>org.apache.geronimo.specs</groupId>
<artifactId>geronimo-jta_1.1_spec</artifactId>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>com.fasterxml.uuid</groupId>
<artifactId>java-uuid-generator</artifactId>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>org.jboss.spec</groupId>
<artifactId>jboss-javaee-web-6.0</artifactId>
<type>pom</type>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>jakarta.transaction</groupId>
<artifactId>jakarta.transaction-api</artifactId>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>jakarta.servlet</groupId>
<artifactId>jakarta.servlet-api</artifactId>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>jakarta.ejb</groupId>
<artifactId>jakarta.ejb-api</artifactId>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>catalina</artifactId>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>org.jboss</groupId>
<artifactId>jboss-vfs</artifactId>
<version>3.1.0.Final</version>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-email</artifactId>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>provided</scope>
</dependency>



<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.apache.openjpa</groupId>
<artifactId>openjpa</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.subethamail</groupId>
<artifactId>subethasmtp-wiser</artifactId>
<scope>test</scope>
</dependency>

<dependency>

<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.camunda.commons</groupId>
<artifactId>camunda-commons-testing</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.camunda.bpm</groupId>
<artifactId>camunda-test-utils-testcontainers</artifactId>
<version>${version.camunda}</version>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-library</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jul-to-slf4j</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>com.github.tomakehurst</groupId>
<artifactId>wiremock</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-jsr223</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.python</groupId>
<artifactId>jython</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.jruby</groupId>
<artifactId>jruby-complete</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.graalvm.js</groupId>
<artifactId>js</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.graalvm.js</groupId>
<artifactId>js-scriptengine</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.camunda.bpm</groupId>
<artifactId>camunda-bpm-archunit</artifactId>
<version>${version.camunda}</version>
<scope>test</scope>
</dependency>
</dependencies>

<build>

<resources>
<resource>
<directory>src/main/resources</directory>
</resource>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
<includes>
<include>org/camunda/bpm/engine/product-info.properties</include>
</includes>
</resource>
</resources>
<testResources>
<testResource>
<directory>src/test/resources</directory>
</testResource>
<testResource>
<directory>src/test/resources</directory>
<filtering>true</filtering>
<includes>
<include>**/camunda.cfg.xml</include>
<include>**/*camunda.cfg.xml</include>
<include>**/camunda.cfg.*.xml</include>
<include>testconfig.properties</include>
<include>**/testcontainers.properties</include>
</includes>
</testResource>
</testResources>

<plugins>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<failIfNoTests>false</failIfNoTests>
<trimStackTrace>false</trimStackTrace>
<redirectTestOutputToFile>true</redirectTestOutputToFile>
<includes>
<include>%regex[.*(${test.includes}).*Test.*.class]</include>
</includes>
<excludes>
<exclude>**/*TestCase.java</exclude>
<exclude>%regex[.*(${test.excludes}).*Test.*.class]</exclude>
</excludes>
<dependenciesToScan>
<dependency>org.camunda.bpm:camunda-bpm-archunit</dependency>
</dependenciesToScan>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>cleanVersions</goal>
</goals>
</execution>
<execution>
<id>bundle-manifest</id>
<phase>process-classes</phase>
<goals>
<goal>manifest</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>test-jar</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<configuration>
<promoteTransitiveDependencies>false</promoteTransitiveDependencies>
<createSourcesJar>true</createSourcesJar>
<createDependencyReducedPom>true</createDependencyReducedPom>
<keepDependenciesWithProvidedScope>true</keepDependenciesWithProvidedScope>
<artifactSet>
<excludes>
<exclude>org.camunda.bpm.model:*</exclude>
<exclude>org.camunda.bpm.dmn:*</exclude>
<exclude>org.camunda.commons:*</exclude>
<exclude>org.camunda.connect:*</exclude>
<exclude>org.camunda.feel:*</exclude>

<exclude>org.springframework:*</exclude>
<exclude>org.slf4j:*</exclude>
<exclude>org.apache.commons:*</exclude>
<exclude>com.sun.mail:*</exclude>
<exclude>javax.activation:*</exclude>
<exclude>org.mybatis:mybatis:*</exclude>
<exclude>commons-logging:*</exclude>
<exclude>joda-time:*</exclude>
</excludes>
</artifactSet>
<relocations>
<relocation>
<pattern>com.google.gson</pattern>
<shadedPattern>camundajar.impl.com.google.gson</shadedPattern>
</relocation>
</relocations>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer" />
</transformers>
<shadeTestJar>true</shadeTestJar>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<executions>
<execution>
<id>copy-upgrade-scripts-liquibase</id>
<phase>compile</phase>
<goals>
<goal>run</goal>
</goals>
<configuration>
<target>


<mkdir dir="target/classes/org/camunda/bpm/engine/db/liquibase/upgrade" />
<copy todir="target/classes/org/camunda/bpm/engine/db/liquibase/upgrade">
<fileset dir="target/classes/org/camunda/bpm/engine/db/upgrade" excludes="*_6.*_*,*_7.0_*,*_7.1_*,*_7.2_*,*_7.3_*,*_7.4_*,*_7.5_*,*_7.6_*,*_7.7_*, *_7.8_*,*_7.9_*,*_7.10_*,*_7.11_*,*_7.12_*,*_7.13_*,*_7.14_*,*_7.15_*" />
</copy>

</target>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
<pluginManagement>
<plugins>

<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>org.apache.felix</groupId>
<artifactId>
maven-bundle-plugin
</artifactId>
<versionRange>
[2.1.0,)
</versionRange>
<goals>
<goal>cleanVersions</goal>
<goal>manifest</goal>
</goals>
</pluginExecutionFilter>
<action>
<ignore />
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>

<profiles>
<profile>
<id>distro</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-source-plugin</artifactId>
<executions>
<execution>
<id>attach-sources</id>
<phase>package</phase>
<goals>
<goal>jar-no-fork</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>

<profile>
<id>h2-in-memory</id>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
<properties>
<database.url>jdbc:h2:mem:camunda;DB_CLOSE_DELAY=1000;LOCK_TIMEOUT=10000</database.url>
<database.driver>org.h2.Driver</database.driver>
<database.username>sa</database.username>
<database.password />
<hibernate.dialect>org.hibernate.dialect.H2Dialect</hibernate.dialect>
</properties>
<dependencies>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>sql-maven-plugin</artifactId>
<dependencies>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>${version.h2}</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</pluginManagement>
</build>
</profile>

</profiles>

</project>

到这里，你可以通过IDEA的maven工具先执行mvn clean install命令，把相关依赖包下载下来，同时验证一下这几个maven工程是否能编译通过。

接下来，拷贝camunda-bpm-platform-7.19.0\engine引擎包下的源代码到自己刚刚新建的camunda-engine工程下，再执行mvn clean install命令进行编译打包，检查是否可以通过。由于camunda-engine源代码中有大量的测试用例，编译比较耗时，这里通过mvn clean install -DskipTests=true命令跳过测试用例执行。

3.5、新建REST服务源码工程

在聚合工程camunda7-source-dev下，新建一个camunda-engine-rest流程引擎rest服务子工程，需要把该工程的父工程配置为camunda-parent。

67-流程引擎rest工程

我们需要把camunda-bpm-platform-7.19.0\engine-rest\engine-rest\pom.xml文件内容拷贝过来，最后的pom.xml源文件如下：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.yuncheng</groupId>
<artifactId>camunda-parent</artifactId>
<version>7.19-SNAPSHOT</version>
<relativePath>../camunda-parent</relativePath>
</parent>

<artifactId>camunda-engine-rest</artifactId>

<properties>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<version.rest-assured>4.5.0</version.rest-assured>

<version.groovy>3.0.9</version.groovy>
<version.apache.httpcore>4.4.5</version.apache.httpcore>
<version.commons-codec>1.15</version.commons-codec>

<version.tomcat>7.0.50</version.tomcat>
<rest.http.port>38080</rest.http.port>
<javax.activation.version>1.1.1</javax.activation.version>
</properties>

<dependencyManagement>
<dependencies>
<dependency>

<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${version.spring-boot}</version>
<scope>import</scope>
<type>pom</type>
</dependency>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-bom</artifactId>
<version>${version.groovy}</version>
<scope>import</scope>
<type>pom</type>
</dependency>
<dependency>
<groupId>org.camunda.bpm</groupId>
<artifactId>camunda-core-internal-dependencies</artifactId>
<version>${version.camunda}</version>
<scope>import</scope>
<type>pom</type>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>${version.xml.jaxb-impl}</version>
</dependency>
<dependency>
<groupId>io.rest-assured</groupId>
<artifactId>rest-assured</artifactId>
<version>${version.rest-assured}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson</groupId>
<artifactId>jackson-bom</artifactId>
<version>${version.jackson}</version>
<scope>import</scope>
<type>pom</type>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpcore</artifactId>
<version>${version.apache.httpcore}</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>${version.commons-codec}</version>
</dependency>
</dependencies>

</dependencyManagement>

<dependencies>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<exclusions>
<exclusion>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
</exclusion>
</exclusions>
</dependency>

<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
</dependency>

<dependency>
<groupId>com.fasterxml.jackson.jaxrs</groupId>
<artifactId>jackson-jaxrs-json-provider</artifactId>
<exclusions>
<exclusion>
<groupId>jakarta.activation</groupId>
<artifactId>jakarta.activation-api</artifactId>
</exclusion>
<exclusion>
<groupId>jakarta.xml.bind</groupId>
<artifactId>jakarta.xml.bind-api</artifactId>
</exclusion>
</exclusions>
</dependency>

<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency>

<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-jsr310</artifactId>
</dependency>


<dependency>
<groupId>org.jboss.spec.javax.servlet</groupId>
<artifactId>jboss-servlet-api_3.0_spec</artifactId>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>com.yuncheng</groupId>
<artifactId>camunda-engine</artifactId>
<version>7.19-SNAPSHOT</version>
<scope>provided</scope>
<exclusions>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring-jcl</artifactId>
</exclusion>
</exclusions>
</dependency>

<dependency>
<groupId>org.camunda.commons</groupId>
<artifactId>camunda-commons-logging</artifactId>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>javax.activation</groupId>
<artifactId>activation</artifactId>
<version>${javax.activation.version}</version>
<scope>provided</scope>
</dependency>

<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<scope>test</scope>
</dependency>


<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<version>${version.tomcat}</version>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-core</artifactId>
</exclusion>
</exclusions>
</dependency>

<dependency>
<groupId>io.rest-assured</groupId>
<artifactId>rest-assured</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpcore</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${version.spring.framework}</version>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring-jcl</artifactId>
</exclusion>
</exclusions>
</dependency>


<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jul-to-slf4j</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.camunda.commons</groupId>
<artifactId>camunda-commons-testing</artifactId>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-core</artifactId>
<version>${version.tomcat}</version>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-logging-juli</artifactId>
<version>${version.tomcat}</version>
<scope>test</scope>
</dependency>

<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<scope>test</scope>
</dependency>

</dependencies>

<build>
<testResources>
<testResource>
<directory>src/test/resources</directory>
<filtering>true</filtering>
</testResource>
</testResources>

<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-source-plugin</artifactId>
<executions>
<execution>
<id>attach-sources</id>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>

<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>test-jar</goal>
</goals>
</execution>
</executions>
</plugin>

<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>

<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<systemPropertyVariables>
<restEasyVersion>${version.resteasy}</restEasyVersion>
</systemPropertyVariables>
</configuration>
</plugin>

</plugins>
</build>

<profiles>
<profile>
<id>distro</id>
<dependencies>
<dependency>
<groupId>org.jboss.spec.javax.ws.rs</groupId>
<artifactId>jboss-jaxrs-api_2.1_spec</artifactId>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<skipTests>true</skipTests>
</configuration>
</plugin>
</plugins>
</build>
</profile>

<profile>
<id>jersey2</id>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
<dependencies>
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>javax.ws.rs-api</artifactId>
<version>2.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-grizzly2-http</artifactId>
<version>${version.jersey2}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet</artifactId>
<version>${version.jersey2}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.inject</groupId>
<artifactId>jersey-hk2</artifactId>
<version>${version.jersey2}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<excludes>
<exclude>**/rest/standalone/**</exclude>
</excludes>
<redirectTestOutputToFile>true</redirectTestOutputToFile>
</configuration>
<executions>
<execution>
<id>encoding-test</id>
<phase>test</phase>
<goals>
<goal>test</goal>
</goals>
<configuration>
<argLine>-Dfile.encoding=ISO-8859-1</argLine>
<includes>
<include>**/ProcessDefinitionRestServiceInteractionTest.java</include>
<include>**/TaskRestServiceInteractionTest.java</include>
</includes>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<executions>
<execution>
<id>add-test-source</id>
<phase>generate-test-sources</phase>
<goals>
<goal>add-test-source</goal>
</goals>
<configuration>
<sources>
<source>src/test/java-jersey2</source>
</sources>
</configuration>
</execution>
<execution>
<id>add-test-resource</id>
<phase>generate-test-resources</phase>
<goals>
<goal>add-test-resource</goal>
</goals>
<configuration>
<resources>
<resource>
<directory>src/test/resources-jersey2</directory>
</resource>
</resources>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>

</profiles>
</project>

接下来，拷贝camunda-bpm-platform-7.19.0\engine-rest\engine-rest工程下的源代码到自己刚刚新建的工程里，再执行mvn clean install命令进行编译打包，检查是否可以通过。

3.6、新建Springboot启动工程

以上4个步骤新建了4个Java maven工程，如果这4个工程均可编译通过，说明camunda源代码迁移这一步骤是没有问题的，接下来就是需要把camunda流程引擎基于源代码方式运行起来。

在聚合工程camunda7-source-dev下，新建一个名称为camunda-boot 的工程，即流程引擎的springboot启动工程。

68-流程引擎boot工程

在该工程下把需要把刚刚新建的流程引擎工程camunda-engine和流程引擎服务工程camunda-engine-rest引入进来，确保它是基于源代码运行的，最后的pom.xml源文件如下：

接下来，新建一个SpringBootApplication启动类：

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.env.Environment;

@SpringBootApplication
public class Camunda7Application {

private static final Logger log = LoggerFactory.getLogger(Camunda7Application.class);

public static void main(String[] args) {
ConfigurableApplicationContext application = SpringApplication.run(Camunda7Application.class, args);
Environment env = application.getEnvironment();
String port = env.getProperty("server.port");
String path = env.getProperty("server.servlet.context-path");
if (path == null || "".equals(path)) {
path = "/";
}
log.info("\n----------------------------------------------------------\n" +
"\tApplication is running!\n" +
"\tPort:\t" + port + "\n" +
"\tPath:\t" + path + "\n" +
"----------------------------------------------------------");
}
}

最后，新建一个springboot启动的application.yaml配置文件，我这里用的是druid连接池，H2数据库，你也可以根据需要切换成mysql数据库：

server:
port: 8080
spring:
datasource:
# url: jdbc:mysql://127.0.0.1:3306/camunda719?characterEncoding=UTF-8&useUnicode=true&useSSL=false&zeroDateTimeBehavior=convertToNull&serverTimezone=Asia/Shanghai
# username: root
# password: root
# driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:h2:mem:camunda;DB_CLOSE_DELAY=1000;LOCK_TIMEOUT=10000
username: sa
password:
driver-class-name: org.h2.Driver
camunda:
bpm:
database:
type: h2 #可改成 mysql
schema-update: true
auto-deployment-enabled: false # 自动部署 resources 下的 bpmn文件
admin-user:
id: demo
password: demo

以上这些完成后，启动springboot工程即可。

69-流程引擎boot启动成功

至此，我们完成了基于camunda源代码编译和运行流程引擎，接下来通过rest服务接口验证camunda流程引擎的功能。

4、测试验证camunda

4.1、发布流程模型

先通过camunda的流程设计器设计一个流程，命名为：UserTask Flow1，然后发布流程，发布流程的接口是我们通过源代码发布的rest服务接口，地址为：http://localhost:8080/engine-rest

51-发布流程

该bpmn流程设计比较简单，就是两个人工处理节点，处理人设置为demo，camunda系统初始化后默认的一个测试用户。UserTask Flow1.bpmn源文件如下：

<?xml version="1.0" encoding="UTF-8"?>
<bpmn:definitions xmlns:bpmn="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" xmlns:camunda="http://camunda.org/schema/1.0/bpmn" xmlns:di="http://www.omg.org/spec/DD/20100524/DI" xmlns:modeler="http://camunda.org/schema/modeler/1.0" id="Definitions_0lwtj60" targetNamespace="http://bpmn.io/schema/bpmn" exporter="Camunda Modeler" exporterVersion="5.19.0" modeler:executionPlatform="Camunda Platform" modeler:executionPlatformVersion="7.20.0">
<bpmn:process id="Process_15r7d3m" name="UserTask Flow1" isExecutable="true" camunda:historyTimeToLive="180">
<bpmn:startEvent id="StartEvent_1">
<bpmn:outgoing>Flow_11x673q</bpmn:outgoing>
</bpmn:startEvent>
<bpmn:sequenceFlow id="Flow_11x673q" sourceRef="StartEvent_1" targetRef="Activity_10ell5p" />
<bpmn:sequenceFlow id="Flow_0foitiz" sourceRef="Activity_10ell5p" targetRef="Activity_09u1so2" />
<bpmn:endEvent id="Event_0e68o48">
<bpmn:incoming>Flow_01cgzte</bpmn:incoming>
</bpmn:endEvent>
<bpmn:sequenceFlow id="Flow_01cgzte" sourceRef="Activity_09u1so2" targetRef="Event_0e68o48" />
<bpmn:userTask id="Activity_10ell5p" name="申请" camunda:assignee="demo">
<bpmn:incoming>Flow_11x673q</bpmn:incoming>
<bpmn:outgoing>Flow_0foitiz</bpmn:outgoing>
</bpmn:userTask>
<bpmn:userTask id="Activity_09u1so2" name="审批" camunda:assignee="demo">
<bpmn:incoming>Flow_0foitiz</bpmn:incoming>
<bpmn:outgoing>Flow_01cgzte</bpmn:outgoing>
</bpmn:userTask>
</bpmn:process>
<bpmndi:BPMNDiagram id="BPMNDiagram_1">
<bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="Process_15r7d3m">
<bpmndi:BPMNShape id="_BPMNShape_StartEvent_2" bpmnElement="StartEvent_1">
<dc:Bounds x="179" y="99" width="36" height="36" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape id="Activity_1xzvv8s_di" bpmnElement="Activity_10ell5p">
<dc:Bounds x="270" y="77" width="100" height="80" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape id="Activity_1h27nqt_di" bpmnElement="Activity_09u1so2">
<dc:Bounds x="460" y="77" width="100" height="80" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape id="Event_0e68o48_di" bpmnElement="Event_0e68o48">
<dc:Bounds x="652" y="99" width="36" height="36" />
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge id="Flow_11x673q_di" bpmnElement="Flow_11x673q">
<di:waypoint x="215" y="117" />
<di:waypoint x="270" y="117" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge id="Flow_01cgzte_di" bpmnElement="Flow_01cgzte">
<di:waypoint x="560" y="117" />
<di:waypoint x="652" y="117" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge id="Flow_0foitiz_di" bpmnElement="Flow_0foitiz">
<di:waypoint x="370" y="117" />
<di:waypoint x="460" y="117" />
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</bpmn:definitions>

点击Deploy流程发布按钮

52-发布成功

提示流程发布成功了，流程模型定义ID也显示了出来！

4.2、查询流程定义

接下来我们验证是否流程发布成功了，可以通过camunda流程引擎的服务接口查看。camunda平台提供了详细的rest服务接口，详细见文档：

https://docs.camunda.org/rest/camunda-bpm-platform/7.19/

64-rest服务接口

查看流程定义rest接口：http://{host}:{port}/{contextPath}/process-definition

用Postman测试验证：http://localhost:8080/engine-rest/process-definition

63-postman查看流程定义

返回结果：

[

{

"id": "Process_15r7d3m:1:80b53453-cfc5-11ee-a32c-32f6efb33b52",

"key": "Process_15r7d3m",

"category": "http://bpmn.io/schema/bpmn",

"description": null,

"name": "UserTask Flow1",

"version": 1,

"resource": "UserTask Flow1.bpmn",

"deploymentId": "80719ba1-cfc5-11ee-a32c-32f6efb33b52",

"diagram": null,

"suspended": false,

"tenantId": null,

"versionTag": null,

"historyTimeToLive": 180,

"startableInTasklist": true

}

]

4.3、发起一个流程

通过服务接口发起流程，去官方网站查找发起流程的rest接口：

54-发起流程rest接口

流程发起的rest接口为：http://{host}:{port}/{contextPath}/process-definition/key/{key}/start

详细接口描述见官方文档：https://docs.camunda.org/rest/camunda-bpm-platform/7.19/#tag/Process-Definition/operation/startProcessInstanceByKey

打开postman工具进行测试验证：http://localhost:8080/engine-rest/process-definition/key/Process_15r7d3m/start

55-postman发起流程

输入JSON

{

"variables": {

"variable1": {

"value": "hello",

"type": "String"

"variable2": {

"value": true,

"type": "Boolean"

}

"businessKey": "myBusinessKey-test1"

}

返回结果：

{

"links": [

{

"method": "GET",

"href": "http://localhost:8080/engine-rest/process-instance/2881747c-cfca-11ee-a32c-32f6efb33b52",

"rel": "self"

}

"id": "2881747c-cfca-11ee-a32c-32f6efb33b52",

"definitionId": "Process_15r7d3m:1:80b53453-cfc5-11ee-a32c-32f6efb33b52",

"businessKey": "myBusinessKey-test1",

"caseInstanceId": null,

"ended": false,

"suspended": false,

"tenantId": null

}

4.4、查询流程状态

查看流程实例的rest接口为：http://{host}:{port}/{contextPath}/process-instance/{id}

56-查看流程实例接口

用postman发起请求：http://localhost:8080/engine-rest/process-instance/2881747c-cfca-11ee-a32c-32f6efb33b52

57-postman查看流程实例

{

"links": [],

"id": "2881747c-cfca-11ee-a32c-32f6efb33b52",

"definitionId": "Process_15r7d3m:1:80b53453-cfc5-11ee-a32c-32f6efb33b52",

"businessKey": "myBusinessKey-test1",

"caseInstanceId": null,

"ended": false,

"suspended": false,

"tenantId": null

}

这时需要知道流程流转到了哪个步骤上，查看流程活动实例的rest接口：http://{host}:{port}/{contextPath}/process-instance/{id}/activity-instances

用Postman测试：

http://localhost:8080/engine-rest/process-instance/2881747c-cfca-11ee-a32c-32f6efb33b52/activity-instances

58-postman查看流程活动

这个信息返回是比较全的，可以看出来流程当前流转到了“申请”节点，即流程刚刚启动的第一个节点。

{

"id": "2881747c-cfca-11ee-a32c-32f6efb33b52",

"parentActivityInstanceId": null,

"activityId": "Process_15r7d3m:1:80b53453-cfc5-11ee-a32c-32f6efb33b52",

"activityType": "processDefinition",

"processInstanceId": "2881747c-cfca-11ee-a32c-32f6efb33b52",

"processDefinitionId": "Process_15r7d3m:1:80b53453-cfc5-11ee-a32c-32f6efb33b52",

"childActivityInstances": [

{

"id": "Activity_10ell5p:28b18532-cfca-11ee-a32c-32f6efb33b52",

"parentActivityInstanceId": "2881747c-cfca-11ee-a32c-32f6efb33b52",

"activityId": "Activity_10ell5p",

"activityType": "userTask",

"processInstanceId": "2881747c-cfca-11ee-a32c-32f6efb33b52",

"processDefinitionId": "Process_15r7d3m:1:80b53453-cfc5-11ee-a32c-32f6efb33b52",

"childActivityInstances": [],

"childTransitionInstances": [],

"executionIds": [

"2881747c-cfca-11ee-a32c-32f6efb33b52"

"activityName": "申请",

"incidentIds": [],

"incidents": [],

"name": "申请"

}

"childTransitionInstances": [],

"executionIds": [

"2881747c-cfca-11ee-a32c-32f6efb33b52"

"activityName": "UserTask Flow1",

"incidentIds": [],

"incidents": [],

"name": "UserTask Flow1"

}

4.5、查询待办任务

通过上面接口得知，流程当前流转到了人工节点上，那么需要查询待办任务：

查询待办任务的rest接口：http://{host}:{port}/{contextPath}/task

用Postman测试：http://localhost:8080/engine-rest/task

59-postman查看待办

返回所有的流程待办任务列表：

[

{

"id": "28b1d353-cfca-11ee-a32c-32f6efb33b52",

"name": "申请",

"assignee": "demo",

"created": "2024-02-20T16:29:26.815+0800",

"due": null,

"followUp": null,

"lastUpdated": null,

"delegationState": null,

"description": null,

"executionId": "2881747c-cfca-11ee-a32c-32f6efb33b52",

"owner": null,

"parentTaskId": null,

"priority": 50,

"processDefinitionId": "Process_15r7d3m:1:80b53453-cfc5-11ee-a32c-32f6efb33b52",

"processInstanceId": "2881747c-cfca-11ee-a32c-32f6efb33b52",

"taskDefinitionKey": "Activity_10ell5p",

"caseExecutionId": null,

"caseInstanceId": null,

"caseDefinitionId": null,

"suspended": false,

"formKey": null,

"camundaFormRef": null,

"tenantId": null

}

]

4.6、完成待办提交流程

完成待办任务，提交流程往下走，提交流程的rest服务接口为：

http://{host}:{port}/{contextPath}/task/{id}/complete

用Postman测试：http://localhost:8080/engine-rest/task/28b1d353-cfca-11ee-a32c-32f6efb33b52/complete

参数：

{

"variables": {

"variable": {

"value": "china"

"variable2": {

"value": false

}

"withVariablesInReturn": true

}

60-postman完成待办

这时，我们再查询流程的的活动实例：

http://{host}:{port}/{contextPath}/process-instance/{id}/activity-instances

用Postman测试：http://localhost:8080/engine-rest/process-instance/2881747c-cfca-11ee-a32c-32f6efb33b52/activity-instances

61-postman活动实例查询

查询流程的待办任务：

http://{host}:{port}/{contextPath}/task

用Postman测试：http://localhost:8080/engine-rest/task

62-postman待办

可以看到，流程提交到下一个”审批”节点，待办任务也流转到了下一步骤。

4.7、查询流程变量

可以通过接口查询该流程执行实例的流程变量，查询流程变量的rest接口为：

http://{host}:{port}/{contextPath}/execution/{id}/localVariables

用Postman测试：http://localhost:8080/engine-rest/execution/2881747c-cfca-11ee-a32c-32f6efb33b52/localVariables

63-postman查看流程变量

5、小结

本文章介绍了通过camunda7.19的源代码编译运行方式，构建自己的springboot工程，并通过RESTful接口方式，验证camunda源代码编译和运行效果。

以上仅仅是验证了camunda流程引擎和rest接口是好用的，还没有人机交互界面，camunda开源版本也提供了基于angular语言开发的web界面，但该界面功能有限（好多高级有用的功能都在camunda企业版本里），而且不太适合中国人操作习惯，所以UI界面部分建议大家选择自己熟悉的语言vue\react\angular,进行定制化开发。

流程门户界面：以下是通过vue开发的流程门户界面，包括流程中心、我的待办、我的已办、我的流程、常用流程等重要的流程操作界面，用户也可以通过可视化拖拉拽方式配置自己的门户界面。

70-流程门户界面

发起流程界面：把用户有权限发起的流程，按照业务分类聚合到一个界面上，方便用户快速发起流程和审批流程。

71-发起流程界面

在线体验系统：http://www.yunchengxc.com

camunda源代码：https://github.com/camunda/camunda-bpm-platform

posted @ 2024-07-11 18:50 大龄码农有梦想阅读(234) 评论(0) 编辑收藏举报

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专注低代码技术和工作流引擎研究

在线体验环境：http://www.yunchengxc.com

编译和运行开源流程引擎camunda源代码

下载camunda源代码

编译camunda源代码

构建camunda源代码工程

3.1、Camunda包结构分析

3.2、新建maven聚合工程

3.3、新建maven父工程

3.4、新建流程引擎源码工程

3.5、新建REST服务源码工程

3.6、新建Springboot启动工程

4、测试验证camunda

4.1、发布流程模型

4.2、查询流程定义

4.3、发起一个流程

4.4、查询流程状态

4.5、查询待办任务

4.6、完成待办提交流程

4.7、查询流程变量

5、小结

公告