drools整合springboot（十）

1，创建项目drools-springboot

2, 引入依赖 pom依赖

4.0.0 org.springframework.boot spring-boot-starters 2.0.6.RELEASE com.dream21th.drools.study drools-springboot 1.0-SNAPSHOT 1.8 org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-aop org.springframework.boot spring-boot-starter-test commons-lang commons-lang 2.6 org.drools drools-core 7.6.0.Final org.drools drools-compiler 7.6.0.Final org.drools drools-templates 7.6.0.Final org.kie kie-api 7.6.0.Final org.kie kie-spring org.springframework spring-tx org.springframework spring-beans org.springframework spring-core org.springframework spring-context 7.6.0.Final ${project.artifactId} src/main/java **/*.xml false src/main/resources **/*.* false org.apache.maven.plugins maven-compiler-plugin 2.3.2 1.8 1.8

3，创建配置文件application.yml

server: port: 8080 spring: application: name: drools_springboot

4,创建DroolConfig.java

package com.dream.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(); } }

5,创建RuleService.java

package com.dream.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(); } }

6,创建HelloController

package com.dream.drools.controller; import com.dream.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"; } }

7，创建启动类

package com.dream.drools; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; /* * @Author dream21th **/ @SpringBootApplication public class DroolsApplication { public static void main(String[] args) { SpringApplication.run(DroolsApplication.class,args); } }

8，创建规则文件

package helloworld rule "rule_helloworld" when eval(true) then System.out.println("规则：rule_helloworld触发..."); end

9，启动应用，并在浏览器中输入http://localhost:8080/hello/rule

控制台可以观察到规则输出

 

代码地址： https://gitee.com/dream21th/drools-study/tree/master/drools-springboot