Drools整和Maven項目開發

 <span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);">1.爲Eclipse配置Drools工具及環境搭建參考：http://blog.sina.com.cn/s/blog_4da7b8a90102vm45.html </span>

2.環境搭建完畢後即可建立一個實際的Drools與maven結合的實例。

 （1）建立一個maven項目：

       

按照上圖的步驟建立一個maven項目

 （2）在pom.xml文件中引入依賴包

          

            打開如圖所示配置文件輸入如下配置數據

 <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">
   <modelVersion>4.0.0</modelVersion>

   <groupId>com.sample</groupId>
   <artifactId>Drools-test</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>Drools :: Sample Maven Project</name>
   <description>A sample Drools Maven project</description>
   <properties>
     <runtime.version>6.4.0.Final</runtime.version>
   </properties>
   <repositories>
     <repository>
       <id>jboss-public-repository-group</id>
       <name>JBoss Public Repository Group</name>
       <url>http://repository.jboss.org/nexus/content/groups/public/</url>
       <releases>
         <enabled>true</enabled>
         <updatePolicy>never</updatePolicy>
       </releases>
       <snapshots>
         <enabled>true</enabled>
         <updatePolicy>daily</updatePolicy>
       </snapshots>
     </repository>
   </repositories>
   <dependencies>
     <dependency>
       <groupId>org.kie</groupId>
       <artifactId>kie-api</artifactId>
       <version>${runtime.version}</version>
     </dependency>
     <dependency>
       <groupId>org.kie</groupId>
       <artifactId>kie-spring</artifactId>
       <version>${runtime.version}</version>
     </dependency>
     <dependency>
       <groupId>org.drools</groupId>
       <artifactId>drools-core</artifactId>
       <version>${runtime.version}</version>
     </dependency>
     <dependency>
       <groupId>org.drools</groupId>
       <artifactId>drools-decisiontables</artifactId>
       <version>${runtime.version}</version>
     </dependency>
     <dependency>
         <groupId>org.jbpm</groupId>
         <artifactId>jbpm-test</artifactId>
         <version>${runtime.version}</version>
     </dependency>
     <dependency>
         <groupId>org.slf4j</groupId>
         <artifactId>slf4j-nop</artifactId>
         <version>1.7.6</version>
     </dependency>
   </dependencies>
 </project>

 確定依賴包成功加載後（不成功就是什麼clean呀，maven->update project什麼的。。。。）

（3）如下圖所示建立文件夾和包結構

      

 （4）在META-INF中建立kmodule.xml 內容如下

 <span style="font-family: Arial, Helvetica, sans-serif;"> <?xml version="1.0" encoding="UTF-8"?>  </span>

 <kmodule xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://jboss.org/kie/6.0.0/kmodule">
    <kbase name="HelloWorldKB" packages="rules">
        <ksession name="HelloWorldKS"/>
    </kbase>
 </kmodule>

 <pre name="code" class="html"><pre name="code" class="html"><span style="font-size: 14px;">（5）在rules文件夾中建立helloWorld.drl 內容如下：</span></pre>
 <pre></pre>
 <span style="font-size:14px; font-family:Arial,Helvetica,sans-serif"></span>
 <pre></pre>
 <pre name="code" class="html" style="font-size: 14px;"><pre name="code" class="html">   <?xml version="1.0" encoding="UTF-8"?>
    <kmodule xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xmlns="http://jboss.org/kie/6.0.0/kmodule">
     <kbase name="HelloWorldKB" packages="rules">
         <ksession name="HelloWorldKS"/>
     </kbase>
    </kmodule></pre><pre name="code" class="html"> （6）建立實體類Message.java</pre><pre name="code" class="html">      內容如下：<span style="font-family: Arial, Helvetica, sans-serif;">package com.sample;</span><pre name="code" class="java"><span style="white-space:pre">      </span>public class Message
 <span style="white-space:pre">  </span>{


     //常量 HELLO 值0
       public static final int HELLO = 0;
       //常量 GOODBYE 值0
       public static final int GOODBYE = 1;


       //消息
       private String message;
       //狀態
       private int status;


       public String getMessage() {
           return this.message;
       }


       public void setMessage(String message) {
           this.message = message;
       }


       public int getStatus() {
           return this.status;
       }


       public void setStatus(int status) {
           this.status = status;
       }

 }</pre><pre name="code" class="java"> (7)建立測試類HelloWorldExample.java <span style="font-family: Arial, Helvetica, sans-serif;"> 內容如下：</span></pre><pre name="code" class="java">    <pre name="code" class="java"><span style="white-space:pre"> </span>package com.sample;
 <span style="white-space:pre">  </span>import org.kie.api.KieServices;
 <span style="white-space:pre">  </span>import org.kie.api.runtime.KieContainer;
 <span style="white-space:pre">  </span>import org.kie.api.runtime.KieSession;

 <span style="white-space:pre">  </span>public class HelloWorldExample
 <span style="white-space:pre">  </span>{

    <span style="white-space:pre">   </span> public static final void main(final String[] args) {
        <span style="white-space:pre">       </span>KieServices ks = KieServices.Factory.get();
         <span style="white-space:pre">  </span>KieContainer kc = ks.getKieClasspathContainer();
         <span style="white-space:pre">  </span>KieSession ksession = kc.newKieSession("HelloWorldKS");
         <span style="white-space:pre">  </span>final Message message = new Message();
         <span style="white-space:pre">  </span>message.setMessage( "Hello World" );
        <span style="white-space:pre"KieSession ksession = kc.newKieSession("HelloWorldKS");
         <span style="white-space:pre">  </span>final Message message = new Message();
         <span style="white-space:pre">  </span>message.setMessage( "Hello World" );
        <span style="white-space:pre">   </span> <span style="white-space:pre">  </span>message.setStatus( Message.HELLO );
        <span style="white-space:pre">