<!--Drools 规则相关 -->

        <dependency>

            <groupId>org.drools</groupId>

            <artifactId>drools-core</artifactId>

            <version>6.5.0.Final</version>

        </dependency>

        <dependency>

            <groupId>org.kie</groupId>

            <artifactId>kie-api</artifactId>

            <version>6.5.0.Final</version>

        </dependency>

        <dependency>

            <groupId>org.drools</groupId>

            <artifactId>drools-compiler</artifactId>

            <version>6.5.0.Final</version>

        </dependency>

public class DroolsHelloWorld {

    public static void main(String[] args) {

        // Class.forName( "org.drools.compiler.kie.builder.impl.KieServicesImpl" ).newInstance()

        KieServices kieServices = KieServices.Factory.get();

        //会去 resource/META-INF 下找 kmodule.xml 文件

        KieContainer kieContainer = kieServices.getKieClasspathContainer();

        // kmodule.xml中<ksession name="helloworld"/> name值

        KieSession kieSession = kieContainer.newKieSession("helloworld");

        //启用规则

        Set set=new HashSet();

        set.add("helloworld1");

        set.add("helloworld2");

        int a = kieSession.fireAllRules();

        /*FactHandle factHandle2 = kieSession.insert("456");

        int b = kieSession.fireAllRules(new RuleNameEndsWithAgendaFilter("helloWorld1"));

        kieSession.delete(factHandle2);*/

        kieSession.dispose();

    }

}

<?xml version="1.0" encoding="UTF-8"?>

<kmodule xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

         xmlns="http://www.drools.org/xsd/kmodule">

    <!-- packages 指向规则文件目录 -->

    <kbase name="hello" packages="com.dinpay.drools.helloworld">

        <!-- name在 创建 KIEsession 会用到 -->

        <ksession name="helloworld"/>

    </kbase>

    <!-- packages 指向规则文件目录   -->

    <kbase name="helloUpgraded" packages="com.dinpay.drools.helloworldUpgraded">

        <ksession name="helloworldUpgraded"/>

    </kbase>

        <!-- packages 指向规则文件目录   -->

    <kbase name="dinpay" packages="rule2">

        <ksession name="dinpayRule"/>

    </kbase>

</kmodule>

rule helloWorld2

    salience 100

    lock-on-active true

    when

        eval(true)

    then

      System.out.println("Helloworld drools2!  ");

end

rule helloWorld1

    salience 100

    lock-on-active true

    when

        eval(true)

    then

      System.out.println("Helloworld drools1!  ");

end