Activiti7 基础篇 Activiti类关系图
流程引擎的配置类（ProcessEngineConfiguration），通过ProcessEngineConfiguration可以创建工作流引擎ProceccEngine，常用的两种方法如下：
使用StandaloneProcessEngineConfigurationActiviti可以单独运行，来创建ProcessEngine，Activiti会自己处理事务。
配置文件方式：
通常在activiti.cfg.xml配置文件中定义一个id为 processEngineConfiguration 的bean.
方法如下：
<bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration"> <!--配置数据库相关的信息--> <!--数据库驱动--> <property name="jdbcDriver" value="com.mysql.jdbc.Driver"/> <!--数据库链接--> <property name="jdbcUrl" value="jdbc:mysql:///activiti"/> <!--数据库用户名--> <property name="jdbcUsername" value="root"/> <!--数据库密码--> <property name="jdbcPassword" value="123456"/> <!--actviti数据库表在生成时的策略 true - 如果数据库中已经存在相应的表，那么直接使用，如果不存在，那么会创建--> <property name="databaseSchemaUpdate" value="true"/> </bean>
还可以加入连接池:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/contex http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql:///activiti"/> <property name="username" value="root"/> <property name="password" value="123456"/> <property name="maxActive" value="3"/> <property name="maxIdle" value="1"/> </bean> <!--在默认方式下 bean的id 固定为 processEngineConfiguration--> <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration"> <!--引入上面配置好的 链接池--> <property name="dataSource" ref="dataSource"/> <!--actviti数据库表在生成时的策略 true - 如果数据库中已经存在相应的表，那么直接使用，如果不存在，那么会创建--> <property name="databaseSchemaUpdate" value="true"/> </bean> </beans>
通过org.activiti.spring.SpringProcessEngineConfiguration 与Spring整合。
创建spring与activiti的整合配置文件：
activity-spring.cfg.xml（名称可修改）
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd "> <!-- 工作流引擎配置bean --> <bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration"> <!-- 数据源 --> <property name="dataSource" ref="dataSource" /> <!-- 使用spring事务管理器 --> <property name="transactionManager" ref="transactionManager" /> <!-- 数据库策略 --> <property name="databaseSchemaUpdate" value="drop-create" /> <!-- activiti的定时任务关闭 --> <property name="jobExecutorActivate" value="false" /> </bean> <!-- 流程引擎 --> <bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean"> <property name="processEngineConfiguration" ref="processEngineConfiguration" /> </bean> <!-- 资源服务service --> <bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService" /> <!-- 流程运行service --> <bean id="runtimeService" factory-bean="processEngine" factory-method="getRuntimeService" /> <!-- 任务管理service --> <bean id="taskService" factory-bean="processEngine" factory-method="getTaskService" /> <!-- 历史管理service --> <bean id="historyService" factory-bean="processEngine" factory-method="getHistoryService" /> <!-- 用户管理service --> <bean id="identityService" factory-bean="processEngine" factory-method="getIdentityService" /> <!-- 引擎管理service --> <bean id="managementService" factory-bean="processEngine" factory-method="getManagementService" /> <!-- 数据源 --> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver" /> <property name="url" value="jdbc:mysql://localhost:3306/activiti" /> <property name="username" value="root" /> <property name="password" value="mysql" /> <property name="maxActive" value="3" /> <property name="maxIdle" value="1" /> </bean> <!-- 事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <!-- 通知 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes></tx:attributes> <!-- 传播行为 --> <tx:method name="save*" propagation="REQUIRED" /> <tx:method name="insert*" propagation="REQUIRED" /> <tx:method name="delete*" propagation="REQUIRED" /> <tx:method name="update*" propagation="REQUIRED" /> <tx:method name="find*" propagation="SUPPORTS" read-only="true" /> <tx:method name="get*" propagation="SUPPORTS" read-only="true" /> </tx:attributes> </tx:advice> <!-- 切面，根据具体项目修改切点配置 --> <aop:config proxy-target-class="true"> <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.itheima.ihrm.service.impl.*.(..))"* /> </aop:config> </beans>
ProcessEngineConfiguration configuration = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti.cfg.xml")
上边的代码要求activiti.cfg.xml中必须有一个processEngineConfiguration的bean
也可以使用下边的方法，更改bean 的名字：
ProcessEngineConfiguration.createProcessEngineConfigurationFromResource(String resource, String beanName);
