在drools5.2,有一个jar包：drools-spring-5.2.0.Final.jar,其中定义了在spring中应用的drools的扩展。通过这些扩展,可以直接在spring的配置文件中,配置knowledgebase、session等bean,从而在spring配置的程序中直接应用。drools-spring-5.2.0.Final.jar在droolsjbpm-integration-distribution-5.2.0.Final/binaries文件夹下。
一.配置文件：beans.xml
<?xml version=”1.0″ encoding=”UTF-8″?>
<beans xmlns=”http://www.springframework.org/schema/beans”
xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance” xmlns:context=”http://www.springframework.org/schema/context”
xmlns:aop=”http://www.springframework.org/schema/aop” xmlns:tx=”http://www.springframework.org/schema/tx”
xmlns:p=”http://www.springframework.org/schema/p”
xsi:schemaLocation=”http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd”>
<import resource=”classpath:com/jsptpd/rjy/zyj/drools/beans-drools.xml”/>
</beans>
二.配置文件：beans-drools.xml
<?xml version=”1.0″ encoding=”UTF-8″?>
<beans xmlns=”http://www.springframework.org/schema/beans”
xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance”
xmlns:drools=”http://drools.org/schema/drools-spring”
xmlns:camel=”http://camel.apache.org/schema/spring”
xsi:schemaLocation=”http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://drools.org/schema/drools-spring http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-container/drools-spring/src/main/resources/org/drools/container/spring/drools-spring-1.0.0.xsd
http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd”>
<drools:kbase id=”kbase1″>
<drools:resources>
<!–不是<drools:resource type=”DRL” source=”classpath:com/jsptpd/rjy/zyj/service/Login.drl”/> –>
<drools:resource type=”DRL” source=”classpath:Login.drl”/>
</drools:resources>
</drools:kbase>
<drools:ksession id=”ksession1″ type=”stateful” kbase=”kbase1″/>
<bean id=”vip” class=”net.itxm.pojo.Vip” />
<bean id=”loginService” class=”net.itxm.service.LoginServiceImpl” >
<property name=”vip” ref=”vip” />
</bean>
</beans>
三.java代码示例文件：LoginTest.java
package net.itxm.junit;
import org.drools.runtime.StatefulKnowledgeSession;
import org.junit.Test;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import net.itxm.service.LoginServiceImpl;
public class LoginTest {
@Test
public void testLogin(){
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext( “beans.xml” );
LoginServiceImpl loginServiceImpl= (LoginServiceImpl) context.getBean( “loginService” );
StatefulKnowledgeSession kstateless = (StatefulKnowledgeSession) context.getBean( “ksession1” );
loginServiceImpl.checkLogin(kstateless);
System.out.println(“aa”);
}
}
四.java代码示例文件：LoginServiceImpl.java
package net.itxm.service;
import org.drools.runtime.StatefulKnowledgeSession;
import org.drools.runtime.StatelessKnowledgeSession;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import net.itxm.pojo.Vip;
public class LoginServiceImpl {
private Vip vip;
public Vip getVip() {
return vip;
}
public void setVip(Vip vip) {
this.vip = vip;
}
public void checkLogin(StatefulKnowledgeSession kstateless ){
System.out.println(“s”);
kstateless.insert(vip);
kstateless.fireAllRules();
kstateless.dispose();
System.out.println(“e”);
}
public static boolean checkDB(String name,String password){
//实际可以到数据库匹配
return name.trim().equals(“jack”)&&password.trim().equals(“123”);
}
}
五.规则文件：Login.drl
package net.itxm.service
#list any import classes here.
import net.itxm.pojo.Vip;
import java.io.Console;
import java.util.Scanner;
import net.itxm.service.LoginServiceImpl
#declare any global variables here
rule “vip初次登录”
salience 100
when
$vip:Vip((name==null||name==””)&&
(password==null||password==””) )
then
String tempName;
String tempPassword;
Console console=System.console();
Scanner scanner = new Scanner(System.in);
System.out.print(“请输入用户名: “);
tempName=(console!=null?console.readLine():scanner.nextLine());
System.out.print(“请输入密码： “);
tempPassword=(console!=null?new String(console.readPassword()):scanner.nextLine());
$vip.setName(tempName.trim());
$vip.setPassword(tempPassword.trim());
update($vip);
end
rule “没有输入密码”
salience 90
when
$vip:Vip((name!=null&&name!=””)&&
(password==null||password==””),$name:name)
then
String tempPassword=””;
Console console=System.console();
Scanner scanner = new Scanner(System.in);
System.out.print(“请输入密码： “);
tempPassword=(console!=null?new String(console.readPassword()):scanner.nextLine());
$vip.setPassword(tempPassword.trim());
update($vip);
end
rule “没有输入用户名”
salience 90
when
$vip:Vip((name==null||name==””)&&
(password!=null&&password!=””),$password:password )
then
String tempName=””;
Scanner scanner = new Scanner(System.in);
System.out.print(“请输入用户名: “);
tempName=scanner.nextLine();
$vip.setName(tempName.trim());
update($vip);
end
rule “输入正确的用户名和密码”
salience 80
when
$vip:Vip((name!=null&&name!=””),
(password!=null&&password!=””),LoginServiceImpl.checkDB(name,password) )
then
System.out.print(” 欢迎 !!!”+$vip.getName());
end
rule “输入错误的用户名和密码”
salience 80
when
$vip:Vip((name!=null&&name!=””),
(password!=null&&password!=””),!LoginServiceImpl.checkDB(name,password) )
then
System.out.print(” 输入错误用户名或密码,请重新输入 !!!/n”);
$vip.setName(“”);
$vip.setPassword(“”);
update($vip);
end
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原创文章，作者：ItWorker，如若转载，请注明出处：https://blog.ytso.com/14626.html