简介：springboot 2.0.4.RELEASE 集成 drools 7.11.0.Final

1.项目结构

springboot 2.x 集成 drools 7.x 随笔

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2. pom.xml文件

<?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>
        <artifactId>AllTest</artifactId>
        <groupId>com.lcc</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>drools_springboot</artifactId>

    <properties>
        <drools.version>7.11.0.Final</drools.version>
        <spring.boot.version>2.0.4.RELEASE</spring.boot.version>
    </properties>


    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>${spring.boot.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-autoconfigure</artifactId>
            <version>${spring.boot.version}</version>
        </dependency>


        <dependency>
            <groupId>org.kie</groupId>
            <artifactId>kie-spring</artifactId>
            <version>${drools.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring-tx</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring-beans</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring-core</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring-context</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.drools</groupId>
            <artifactId>drools-compiler</artifactId>
            <version>${drools.version}</version>
        </dependency>


        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.12.6</version>
        </dependency>

    </dependencies>


</project>

3.配置类

基于springboot的初始化配置：

package com.drools.spring; 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.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.Resource; import org.springframework.core.io.support.PathMatchingResourcePatternResolver; import org.springframework.core.io.support.ResourcePatternResolver; import java.io.IOException; /** * Created by lcc on 2018/9/27. */ @Configuration public class DroolsAutoConfiguration { /** 特别要注意 rule的存放位置 */ private static final String RULES_PATH = "rules/"; @Bean @ConditionalOnMissingBean(KieFileSystem.class) public KieFileSystem kieFileSystem() throws IOException { KieFileSystem kieFileSystem = getKieServices().newKieFileSystem(); for (Resource file : getRuleFiles()) { String path = RULES_PATH + file.getFilename(); kieFileSystem.write(ResourceFactory.newClassPathResource(path, "UTF-8")); } return kieFileSystem; } /** * 这里要引入 org.springframework.core.io.Resource 包 * * @return * @throws IOException */ private Resource[] getRuleFiles() throws IOException { ResourcePatternResolver resourcePatternResolver = new PathMatchingResourcePatternResolver(); return resourcePatternResolver.getResources("classpath*:" + RULES_PATH + "**/*.*"); } @Bean @ConditionalOnMissingBean(KieContainer.class) 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 @ConditionalOnMissingBean(KieBase.class) public KieBase kieBase() throws IOException { return kieContainer().getKieBase(); } @Bean @ConditionalOnMissingBean(KieSession.class) public KieSession kieSession() throws IOException { return kieContainer().newKieSession(); } @Bean @ConditionalOnMissingBean(KModuleBeanFactoryPostProcessor.class) public KModuleBeanFactoryPostProcessor kiePostProcessor() { return new KModuleBeanFactoryPostProcessor(); } }

4.Springboot启动类

package com.drools.spring; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; /** * Created by lcc on 2018/9/27. */ @SpringBootApplication public class SpringBootDroolsApplication { public static void main(String[] args) { SpringApplication.run(SpringBootDroolsApplication.class, args); } }

5.实体类

package com.drools.spring.entity; import lombok.Data; /** * Created by lcc on 2018/9/27. */ @Data public class Address { private String postcode; private String street; private String state; }

6.规则返回结果类

package com.drools.spring.entity; import lombok.Data; /** * Created by lcc on 2018/9/27. */ @Data public class AddressCheckResult { private boolean postCodeResult = false; // true:通过校验；false：未通过校验 }

7.规则文件

注意存放的位置

package com.rules import com.drools.spring.entity.Address; import com.drools.spring.entity.AddressCheckResult; rule "Postcode should be filled with exactly 5 numbers" when address : Address(postcode != null, postcode matches "([0-9]{5})") checkResult : AddressCheckResult(); then checkResult.setPostCodeResult(true); System.out.println("规则中打印日志：校验通过!"); end

8.规则文件kmodule

<?xml version="1.0" encoding="UTF-8" ?>
<kmodule xmlns="http://www.drools.org/xsd/kmodule">
    <kbase name="rules" packages="com.rules">
        <ksession name="ksession-rule"/>
    </kbase>
</kmodule>

9.测试Controller

package com.drools.spring.controller; import com.drools.spring.entity.Address; import com.drools.spring.entity.AddressCheckResult; import org.kie.api.runtime.KieSession; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import javax.annotation.Resource; /** * Created by lcc on 2018/9/27. */ @RequestMapping("/test") @Controller public class TestController { @Resource private KieSession kieSession; @ResponseBody @RequestMapping("/address") public void test(){ Address address = new Address(); address.setPostcode("99425"); AddressCheckResult result = new AddressCheckResult(); kieSession.insert(address); kieSession.insert(result); int ruleFiredCount = kieSession.fireAllRules(); System.out.println("触发了" + ruleFiredCount + "条规则"); if(result.isPostCodeResult()){ System.out.println("规则校验通过"); } } }

启动Springboot项目之后，默认访问http://localhost:8080/test/address 即可。
运行结果

规则中打印日志：校验通过!
触发了1条规则
规则校验通过
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