<!--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 helloWorld2salience 100lock-on-active truewheneval(true)thenSystem.out.println("Helloworld drools2!  ");
endrule helloWorld1salience 100lock-on-active truewheneval(true)thenSystem.out.println("Helloworld drools1!  ");
end