目录Drools有什么用SpringBoot整合Drools初步实战1.导入Maven依赖2.编写配置类3.resources目录新建rules目录4.新建实体5.编写规则文件6.单元测试(只要正常输出，表示整合是Ok的，接下来就可以任意应用了)7.输出结果
Drools有什么用
从我个人所待过的公司，其中做智能酒店这个项目时就用到规则引擎Drools，将它用于处理优惠劵规则。
SpringBoot整合Drools初步实战
1.导入Maven依赖
<properties><drools.version>7.14.0.Final</drools.version></properties><!-- drools --><dependency> <groupId>org.drools</groupId> <artifactId>drools-compiler</artifactId> <version>${drools.version}</version></dependency>
2.编写配置类
package com.springcloud.blog.admin.config;import org.kie.api.KieBase;import org.kie.api.KieServices;import org.kie.api.builder.*;import org.kie.api.runtime.KieContainer;import org.kie.api.runtime.KieSession;import org.kie.internal.io.ResourceFactory;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.core.io.Resource;import org.springframework.core.io.support.PathMatchingResourcePatternResolver;import org.springframework.core.io.support.ResourcePatternResolver;import java.io.IOException;@Configurationpublic class KiaSessionConfig { private static final String RULES_PATH = "rules/"; @Bean public KieFileSystem kieFileSystem() throws IOException { KieFileSystem kieFileSystem = getKieServices().newKieFileSystem(); for (Resource file : getRuleFiles()) { kieFileSystem.write(ResourceFactory.newClassPathResource(RULES_PATH + file.getFilename(), "UTF-8")); } return kieFileSystem; } private Resource[] getRuleFiles() throws IOException { ResourcePatternResolver resourcePatternResolver = new PathMatchingResourcePatternResolver(); final Resource[] resources = resourcePatternResolver.getResources("classpath*:" + RULES_PATH + "**/*.*"); return resources; } @Bean public KieContainer kieContainer() throws IOException { final KieRepository kieRepository = getKieServices().getRepository(); kieRepository.addKieModule(new KieModule() { public ReleaseId getReleaseId() { return kieRepository.getDefaultReleaseId(); } }); KieBuilder kieBuilder = getKieServices().newKieBuilder(kieFileSystem()); kieBuilder.buildAll(); return getKieServices().newKieContainer(kieRepository.getDefaultReleaseId()); } private KieServices getKieServices() { return KieServices.Factory.get(); } @Bean public KieBase kieBase() throws IOException { return kieContainer().getKieBase(); } @Bean public KieSession kieSession() throws IOException { return kieContainer().newKieSession(); }}
3.resources目录新建rules目录
4.新建实体
package com.springcloud.blog.admin.drools;public class People { private int sex; private String name; private String drlType; public int getSex() { return sex; } public void setSex(int sex) { this.sex = sex; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getDrlType() { return drlType; } public void setDrlType(String drlType) { this.drlType = drlType; }}
5.编写规则文件
package com.springcloud.blog.admin.droolsimport com.springcloud.blog.admin.drools.Peopledialect "java"rule "man" when $p : People(sex == 1 && drlType == "people") then System.out.println($p.getName() + "是男孩");end
6.单元测试(只要正常输出，表示整合是Ok的，接下来就可以任意应用了)
package com.springcloud.blog.base.controller.test.task;import com.springcloud.blog.admin.BlogAdminApplication;import com.springcloud.blog.admin.drools.People;import org.junit.Test;import org.junit.runner.RunWith;import org.kie.api.KieBase;import org.kie.api.runtime.KieSession;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.boot.test.context.SpringBootTest;import org.springframework.test.context.junit4.SpringRunner;@RunWith(SpringRunner.class)@SpringBootTest(classes = BlogAdminApplication.class, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)public class DroolsJunitTest { @Autowired private KieSession session; @Test public void people() { People people = new People(); people.setName("YC"); people.setSex(1); people.setDrlType("people"); session.insert(people);//插入 session.fireAllRules();//执行规则 }}
7.输出结果
YC是男孩
以上就是SpringBoot整合Drools的实现步骤的详细内容，更多关于SpringBoot整合Drools的资料请关注其它相关文章！
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