Drools业务规则管理系统25_Spring整合Drools7
一、Spring简单整合Drools
在项目中使用Drools时往往会跟Spring整合来使用。具体整合步骤如下：
1、创建maven工程drools_spring并配置pom.xml
2、创建规则目录/resources/rules，rules目录中创建规则文件helloworld.drl
3、创建Spring配置文件/resources/spring.xml
4、编写单元测试类
第一步：创建maven工程无骨架drools_spring并配置pom.xml
<?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> <groupId>com.itheima</groupId> <artifactId>drools_spring</artifactId> <version>1.0-SNAPSHOT</version> <properties> <drools.version>7.10.0.Final</drools.version> <spring.version>5.0.5.RELEASE</spring.version> </properties> <dependencies> <dependency> <groupId>org.drools</groupId> <artifactId>drools-compiler</artifactId> <version>${drools.version}</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <dependency> <groupId>org.kie</groupId> <artifactId>kie-spring</artifactId> <version>${drools.version}</version> <!--注意：此处必须排除传递过来的依赖，否则会跟我们自己导入的Spring jar包产生冲突--> <exclusions> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> </exclusion> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> </exclusion> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> </exclusion> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> </dependencies> </project>
第二步：创建规则目录/resources/rules，rules目录中创建规则文件helloworld.drl
package helloworld rule "rule_helloworld" when eval(true) then System.out.println("规则：rule_helloworld触发..."); end
第三步：创建Spring配置文件/resources/spring.xml
<?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:kie="http://drools.org/schema/kie-spring" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://drools.org/schema/kie-spring http://drools.org/schema/kie-spring.xsd"> <kie:kmodule id="kmodule"> <kie:kbase name="kbase" packages="rules"> <kie:ksession name="ksession"></kie:ksession> </kie:kbase> </kie:kmodule> <bean class="org.kie.spring.annotations.KModuleAnnotationPostProcessor"></bean> </beans>
第四步：编写单元测试类
package com.itheima.test; import org.junit.Test; import org.junit.runner.RunWith; import org.kie.api.KieBase; import org.kie.api.cdi.KBase; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = "classpath:spring.xml") public class DroolsSpringTest {
@KBase("kbase") private KieBase kieBase;//注入KieBase对象
@Test public void test1(){ KieSession kieSession = kieBase.newKieSession(); kieSession.fireAllRules(); kieSession.dispose(); }
@KSession("ksession")
private KieSession kieSession;//注入KieSession对象，不建议这么做
@Test
public void test2(){
kieSession.fireAllRules();
kieSession.dispose();
}
}
执行test1/test2，控制台输出结果：
二、Spring整合Drools+web
本小节我们来进行Drools和Spring Web的整合。具体操作步骤如下：
1、创建maven的war工程drools_springweb并在pom.xml文件中导入相关maven坐标
2、配置web.xml
3、创建/resources/springmvc.xml文件
4、创建规则文件/resources/rules/helloworld.drl
5、创建RuleService
6、创建HelloController
第一步：创建maven的war工程drools_springweb并在pom.xml文件中导入相关maven坐标
<?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> <groupId>com.itheima</groupId> <artifactId>drools_springweb</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.source>1.8</maven.compiler.source> <maven.compiler.target>1.8</maven.compiler.target> <drools.version>7.10.0.Final</drools.version> <spring.version>5.0.5.RELEASE</spring.version> </properties> <dependencies> <dependency> <groupId>org.drools</groupId> <artifactId>drools-compiler</artifactId> <version>${drools.version}</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <dependency> <groupId>org.kie</groupId> <artifactId>kie-spring</artifactId> <version>${drools.version}</version> <!--注意：此处必须排除传递过来的依赖，否则会跟我们自己导入的Spring jar包产生冲突--> <exclusions> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> </exclusion> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> </exclusion> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> </exclusion> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.tomcat.maven</groupId> <artifactId>tomcat7-maven-plugin</artifactId> <configuration> <!-- 指定端口 --> <port>80</port> <!-- 请求路径 --> <path>/</path> </configuration> </plugin> </plugins> </build> </project>
第二步：配置web.xml
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" > <web-app> <display-name>Archetype Created Web Application</display-name> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 指定加载的配置文件 ，通过参数contextConfigLocation加载 --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> </web-app>
第三步：创建/resources/springmvc.xml文件
<?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:mvc="http://www.springframework.org/schema/mvc" xmlns:kie="http://drools.org/schema/kie-spring" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://drools.org/schema/kie-spring http://drools.org/schema/kie-spring.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <kie:kmodule id="kmodule"> <kie:kbase name="kbase" packages="rules"> <kie:ksession name="ksession"></kie:ksession> </kie:kbase> </kie:kmodule> <bean class="org.kie.spring.annotations.KModuleAnnotationPostProcessor"/> <!--spring批量扫描--> <context:component-scan base-package="com.itheima" /> <context:annotation-config/> <!--springMVC注解驱动--> <mvc:annotation-driven/> </beans>
第四步：创建规则文件/resources/rules/helloworld.drl
package helloworld rule "rule_helloworld" when eval(true) then System.out.println("规则：rule_helloworld触发..."); end
第五步：创建RuleService
package com.itheima.service; import org.kie.api.KieBase; import org.kie.api.cdi.KBase; import org.kie.api.runtime.KieSession; import org.springframework.stereotype.Service; @Service public class RuleService {
@KBase("kbase") private KieBase kieBase;
public void rule(){ KieSession kieSession = kieBase.newKieSession(); kieSession.fireAllRules(); kieSession.dispose(); } }
第六步：创建HelloController
package com.itheima.controller; import com.itheima.service.RuleService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("/hello") public class HelloController { @Autowired private RuleService ruleService; @RequestMapping("/rule") public String rule(){ ruleService.rule(); return "OK"; } }
用tomcat7插件进行启动，启动成功浏览器访问http://localhost:80/hello/rule.do，检查控制台和浏览器展示：
三、Spring Boot整合Drools
目前在企业开发中Spring Boot已经成为主流，本小节我们来进行Spring Boot整合Drools。具体操作步骤：
1、创建maven工程drools_springboot并配置pom.xml
2、创建/resources/application.yml文件
3、创建规则文件/resources/rules/helloworld.drl
4、编写配置类DroolsConfig
5、创建RuleService类
6、创建HelloController类
7、创建启动类DroolsApplication
第一步：创建maven工程drools_springboot并配置pom.xml
<?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"> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starters</artifactId> <version>2.0.6.RELEASE</version> </parent> <modelVersion>4.0.0</modelVersion> <groupId>com.itheima</groupId> <artifactId>drools_springboot</artifactId> <version>1.0-SNAPSHOT</version> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-aop</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> </dependency> <dependency> <groupId>commons-lang</groupId> <artifactId>commons-lang</artifactId> <version>2.6</version> </dependency> <!--drools规则引擎--> <dependency> <groupId>org.drools</groupId> <artifactId>drools-core</artifactId> <version>7.6.0.Final</version> </dependency> <dependency> <groupId>org.drools</groupId> <artifactId>drools-compiler</artifactId> <version>7.6.0.Final</version> </dependency> <dependency> <groupId>org.drools</groupId> <artifactId>drools-templates</artifactId> <version>7.6.0.Final</version> </dependency> <dependency> <groupId>org.kie</groupId> <artifactId>kie-api</artifactId> <version>7.6.0.Final</version> </dependency> <dependency> <groupId>org.kie</groupId> <artifactId>kie-spring</artifactId> <exclusions> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> </exclusion> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> </exclusion> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> </exclusion> <exclusion> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> </exclusion> </exclusions> <version>7.6.0.Final</version> </dependency> </dependencies> <build> <finalName>${project.artifactId}</finalName> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.*</include> </includes> <filtering>false</filtering> </resource> </resources> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>2.3.2</version> <configuration> <source>1.8</source> <target>1.8</target> </configuration> </plugin> </plugins> </build> </project>
第二步：创建/resources/application.yml文件
server: port: 8080 spring: application: name: drools_springboot
第三步：创建规则文件/resources/rules/helloworld.drl
package helloworld rule "rule_helloworld" when eval(true) then System.out.println("规则：rule_helloworld触发..."); end
第四步：编写配置类DroolsConfig
package com.itheima.drools.config; import org.kie.api.KieBase; import org.kie.api.KieServices; import org.kie.api.builder.KieBuilder; import org.kie.api.builder.KieFileSystem; import org.kie.api.builder.KieRepository; import org.kie.api.runtime.KieContainer; import org.kie.api.runtime.KieSession; import org.kie.internal.io.ResourceFactory; import org.kie.spring.KModuleBeanFactoryPostProcessor; import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.core.io.support.PathMatchingResourcePatternResolver; import org.springframework.core.io.support.ResourcePatternResolver; import org.springframework.core.io.Resource; import java.io.IOException; /** * 规则引擎配置类 */ @Configuration public class DroolsConfig { //指定规则文件存放的目录 private static final String RULES_PATH = "rules/"; private final KieServices kieServices = KieServices.Factory.get(); @Bean @ConditionalOnMissingBean public KieFileSystem kieFileSystem() throws IOException { KieFileSystem kieFileSystem = kieServices.newKieFileSystem(); ResourcePatternResolver resourcePatternResolver = new PathMatchingResourcePatternResolver(); Resource[] files = resourcePatternResolver.getResources("classpath*:" + RULES_PATH + "*.*"); String path = null; for (Resource file : files) { path = RULES_PATH + file.getFilename(); kieFileSystem.write(ResourceFactory.newClassPathResource(path, "UTF-8")); } return kieFileSystem; } @Bean @ConditionalOnMissingBean public KieContainer kieContainer() throws IOException { KieRepository kieRepository = kieServices.getRepository(); kieRepository.addKieModule(kieRepository::getDefaultReleaseId); KieBuilder kieBuilder = kieServices.newKieBuilder(kieFileSystem()); kieBuilder.buildAll(); return kieServices.newKieContainer(kieRepository.getDefaultReleaseId()); } @Bean @ConditionalOnMissingBean public KieBase kieBase() throws IOException { return kieContainer().getKieBase(); } @Bean @ConditionalOnMissingBean public KModuleBeanFactoryPostProcessor kiePostProcessor() { return new KModuleBeanFactoryPostProcessor(); } }
第五步：创建RuleService类
package com.itheima.drools.service; import org.kie.api.KieBase; import org.kie.api.runtime.KieSession; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; @Service public class RuleService {
@Autowired private KieBase kieBase;
public void rule(){ KieSession kieSession = kieBase.newKieSession(); kieSession.fireAllRules(); kieSession.dispose(); } }
第六步：创建HelloController类
package com.itheima.drools.controller; import com.itheima.drools.service.RuleService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("/hello") public class HelloController {
@Autowired private RuleService ruleService;
@RequestMapping("/rule") public String rule(){ ruleService.rule(); return "OK"; } }
第七步：创建启动类DroolsApplication
package com.itheima.drools; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class DroolsApplication { public static void main(String[] args) { SpringApplication.run(DroolsApplication.class,args); } }
