第2-4-6章 springboot整合规则引擎Drools-业务规则管理系统-组件化-中台
目录
7. Spring整合Drools
7.1 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：
第一步：创建maven工程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，中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();
}
}
7.1.1 以上代码均在drools_spring项目中
7.2 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：
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";
}
}
7.2 以上代码均在drools_springweb项目中
7.3 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：
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);
}
}
第八步：启动服务，访问http://localhost:8080/hello/rule
7.3.1 以上代码均在drools_springboot项目中
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