标签:业务 新建 初步 pre this 轻松 when work --
Drools是一个易于访问企业策略、易于调整以及易于管理的开源业务规则引擎,符合业内标准,速度快、效率高。业务分析师或审核人员可以利用它轻松查看业务规则,从而检验是否已编码的规则执行所需的业务规则。
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。
<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>
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; @Configuration public 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(); } }
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; } }
package com.springcloud.blog.admin.drools import com.springcloud.blog.admin.drools.People dialect "java" rule "man" when $p : People(sex == 1 && drlType == "people") then System.out.println($p.getName() + "是男孩"); end
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 } }
YC是男孩
标签:业务 新建 初步 pre this 轻松 when work --
原文地址:https://www.cnblogs.com/youcong/p/13234392.html