【应用篇】Activiti监听与业务颗粒结合的简单应用(一)

Activiti的简单应用，应用监听来实现简单的业务颗粒与工作流程结合，让流程带动业务颗粒执行的过程。

 

新建一个普通类

[java]  view plain copy print ?

1. package com.tgb.itoo.activiti.controller;  
2.   
3. public class jy {  
4.   
5.     public static void SayHello(){  
6.         System.out.println("jingyuan88");  
7.     }  
8. }  

新建一个监听类

[java]  view plain copy print ?

1. package com.tgb.itoo.activiti.controller;  
2.   
3. import org.activiti.engine.delegate.DelegateTask;  
4. import org.activiti.engine.delegate.TaskListener;  
5.   
6. public class jingyuanDelegate implements TaskListener{  
7.       
8.     @Override  
9.     public void notify(DelegateTask delegateTask) {       
10.         jy.SayHello();  
11.     }  
12.       
13. }  

类似的再建两个类（ghy，xs）与两个监听（guhaiyanDelegate，xvshuDelegate）

 

画如下流程图：

配置相应的属性

 

每个类上添加相应的监听 如图：

给每条流向添加变量 如图：

最终生成的配置文件 如下：

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1. <?xml version="1.0" encoding="UTF-8"?>  
2. <definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test">  
3.   <process id="myProcess" name="My process" isExecutable="true">  
4.     <startEvent id="startevent1" name="Start"></startEvent>  
5.     <userTask id="xvshu" name="xvshu">  
6.       <extensionElements>  
7.         <activiti:taskListener event="create" class="com.tgb.itoo.activiti.controller.xvshuDelegate"></activiti:taskListener>  
8.       </extensionElements>  
9.     </userTask>  
10.     <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="xvshu"></sequenceFlow>  
11.     <userTask id="jingyuan" name="jingyuan">  
12.       <extensionElements>  
13.         <activiti:taskListener event="create" class="com.tgb.itoo.activiti.controller.jingyuanDelegate"></activiti:taskListener>  
14.       </extensionElements>  
15.     </userTask>  
16.     <userTask id="usertask1" name="guhaiyan">  
17.       <extensionElements>  
18.         <activiti:taskListener event="create" class="com.tgb.itoo.activiti.controller.guhaiyanDelegate"></activiti:taskListener>  
19.       </extensionElements>  
20.     </userTask>  
21.     <endEvent id="endevent1" name="End"></endEvent>  
22.     <sequenceFlow id="flow4" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>  
23.     <exclusiveGateway id="exclusivegateway1" name="Exclusive Gateway"></exclusiveGateway>  
24.     <sequenceFlow id="flow5" sourceRef="xvshu" targetRef="exclusivegateway1"></sequenceFlow>  
25.     <sequenceFlow id="flow6" name="同意" sourceRef="exclusivegateway1" targetRef="jingyuan">  
26.       <conditionExpression xsi:type="tFormalExpression"><![CDATA[${result}]]></conditionExpression>  
27.     </sequenceFlow>  
28.     <sequenceFlow id="flow7" name="不同意" sourceRef="exclusivegateway1" targetRef="endevent1">  
29.       <conditionExpression xsi:type="tFormalExpression"><![CDATA[${!result}]]></conditionExpression>  
30.     </sequenceFlow>  
31.     <exclusiveGateway id="exclusivegateway2" name="Exclusive Gateway"></exclusiveGateway>  
32.     <sequenceFlow id="flow8" sourceRef="jingyuan" targetRef="exclusivegateway2"></sequenceFlow>  
33.     <sequenceFlow id="flow9" name="同意" sourceRef="exclusivegateway2" targetRef="usertask1">  
34.       <conditionExpression xsi:type="tFormalExpression"><![CDATA[${result}]]></conditionExpression>  
35.     </sequenceFlow>  
36.     <sequenceFlow id="flow10" name="不同意" sourceRef="exclusivegateway2" targetRef="endevent1">  
37.       <conditionExpression xsi:type="tFormalExpression"><![CDATA[${!result}]]></conditionExpression>  
38.     </sequenceFlow>  
39.   </process>  
40.   <bpmndi:BPMNDiagram id="BPMNDiagram_myProcess">  
41.     <bpmndi:BPMNPlane bpmnElement="myProcess" id="BPMNPlane_myProcess">  
42.       <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">  
43.         <omgdc:Bounds height="35.0" width="35.0" x="70.0" y="150.0"></omgdc:Bounds>  
44.       </bpmndi:BPMNShape>  
45.       <bpmndi:BPMNShape bpmnElement="xvshu" id="BPMNShape_xvshu">  
46.         <omgdc:Bounds height="55.0" width="105.0" x="150.0" y="140.0"></omgdc:Bounds>  
47.       </bpmndi:BPMNShape>  
48.       <bpmndi:BPMNShape bpmnElement="jingyuan" id="BPMNShape_jingyuan">  
49.         <omgdc:Bounds height="55.0" width="105.0" x="410.0" y="140.0"></omgdc:Bounds>  
50.       </bpmndi:BPMNShape>  
51.       <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">  
52.         <omgdc:Bounds height="55.0" width="105.0" x="710.0" y="140.0"></omgdc:Bounds>  
53.       </bpmndi:BPMNShape>  
54.       <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">  
55.         <omgdc:Bounds height="35.0" width="35.0" x="745.0" y="270.0"></omgdc:Bounds>  
56.       </bpmndi:BPMNShape>  
57.       <bpmndi:BPMNShape bpmnElement="exclusivegateway1" id="BPMNShape_exclusivegateway1">  
58.         <omgdc:Bounds height="40.0" width="40.0" x="300.0" y="147.0"></omgdc:Bounds>  
59.       </bpmndi:BPMNShape>  
60.       <bpmndi:BPMNShape bpmnElement="exclusivegateway2" id="BPMNShape_exclusivegateway2">  
61.         <omgdc:Bounds height="40.0" width="40.0" x="560.0" y="148.0"></omgdc:Bounds>  
62.       </bpmndi:BPMNShape>  
63.       <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">  
64.         <omgdi:waypoint x="105.0" y="167.0"></omgdi:waypoint>  
65.         <omgdi:waypoint x="150.0" y="167.0"></omgdi:waypoint>  
66.       </bpmndi:BPMNEdge>  
67.       <bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">  
68.         <omgdi:waypoint x="762.0" y="195.0"></omgdi:waypoint>  
69.         <omgdi:waypoint x="762.0" y="270.0"></omgdi:waypoint>  
70.       </bpmndi:BPMNEdge>  
71.       <bpmndi:BPMNEdge bpmnElement="flow5" id="BPMNEdge_flow5">  
72.         <omgdi:waypoint x="255.0" y="167.0"></omgdi:waypoint>  
73.         <omgdi:waypoint x="300.0" y="167.0"></omgdi:waypoint>  
74.       </bpmndi:BPMNEdge>  
75.       <bpmndi:BPMNEdge bpmnElement="flow6" id="BPMNEdge_flow6">  
76.         <omgdi:waypoint x="340.0" y="167.0"></omgdi:waypoint>  
77.         <omgdi:waypoint x="410.0" y="167.0"></omgdi:waypoint>  
78.         <bpmndi:BPMNLabel>  
79.           <omgdc:Bounds height="14.0" width="24.0" x="350.0" y="167.0"></omgdc:Bounds>  
80.         </bpmndi:BPMNLabel>  
81.       </bpmndi:BPMNEdge>  
82.       <bpmndi:BPMNEdge bpmnElement="flow7" id="BPMNEdge_flow7">  
83.         <omgdi:waypoint x="320.0" y="187.0"></omgdi:waypoint>  
84.         <omgdi:waypoint x="320.0" y="287.0"></omgdi:waypoint>  
85.         <omgdi:waypoint x="745.0" y="287.0"></omgdi:waypoint>  
86.         <bpmndi:BPMNLabel>  
87.           <omgdc:Bounds height="14.0" width="36.0" x="330.0" y="243.0"></omgdc:Bounds>  
88.         </bpmndi:BPMNLabel>  
89.       </bpmndi:BPMNEdge>  
90.       <bpmndi:BPMNEdge bpmnElement="flow8" id="BPMNEdge_flow8">  
91.         <omgdi:waypoint x="515.0" y="167.0"></omgdi:waypoint>  
92.         <omgdi:waypoint x="560.0" y="168.0"></omgdi:waypoint>  
93.       </bpmndi:BPMNEdge>  
94.       <bpmndi:BPMNEdge bpmnElement="flow9" id="BPMNEdge_flow9">  
95.         <omgdi:waypoint x="600.0" y="168.0"></omgdi:waypoint>  
96.         <omgdi:waypoint x="710.0" y="167.0"></omgdi:waypoint>  
97.         <bpmndi:BPMNLabel>  
98.           <omgdc:Bounds height="14.0" width="24.0" x="610.0" y="168.0"></omgdc:Bounds>  
99.         </bpmndi:BPMNLabel>  
100.       </bpmndi:BPMNEdge>  
101.       <bpmndi:BPMNEdge bpmnElement="flow10" id="BPMNEdge_flow10">  
102.         <omgdi:waypoint x="580.0" y="188.0"></omgdi:waypoint>  
103.         <omgdi:waypoint x="580.0" y="287.0"></omgdi:waypoint>  
104.         <omgdi:waypoint x="745.0" y="287.0"></omgdi:waypoint>  
105.         <bpmndi:BPMNLabel>  
106.           <omgdc:Bounds height="14.0" width="36.0" x="590.0" y="243.0"></omgdc:Bounds>  
107.         </bpmndi:BPMNLabel>  
108.       </bpmndi:BPMNEdge>  
109.     </bpmndi:BPMNPlane>  
110.   </bpmndi:BPMNDiagram>  
111. </definitions>  

启动流程对应的代码：

[java]  view plain copy print ?

1. import java.io.BufferedReader;  
2. import java.io.IOException;  
3. import java.io.InputStreamReader;  
4. import java.util.HashMap;  
5. import java.util.Map;  
6.   
7. import org.activiti.engine.ProcessEngine;  
8. import org.activiti.engine.ProcessEngineConfiguration;  
9. import org.activiti.engine.RepositoryService;  
10. import org.activiti.engine.RuntimeService;  
11. import org.activiti.engine.TaskService;  
12. import org.activiti.engine.runtime.ProcessInstance;  
13. import org.activiti.engine.task.Task;  
14.   
15. public class testDemo {  
16.   
17.     private static String readDataFromConsole(String prompt) {  
18.         BufferedReader br = new BufferedReader(new InputStreamReader(System.in));  
19.         String str = null;  
20.         try {  
21.             System.out.print(prompt);  
22.             str = br.readLine();  
23.   
24.         } catch (IOException e) {  
25.             e.printStackTrace();  
26.         }  
27.         return str;  
28.     }  
29.   
30.     public static void main(String[] args) {  
31.   
32.         String str = readDataFromConsole("Please input string：");  
33.         System.out.println("The information from console： " + str);  
34.         // 创建流程引擎         
35.         ProcessEngineConfiguration processEngineConfiguration = ProcessEngineConfiguration  
36.                 .createStandaloneProcessEngineConfiguration();  
37.         // 连接数据库的配置  
38.         processEngineConfiguration.setJdbcDriver("com.mysql.jdbc.Driver");  
39.         processEngineConfiguration  
40.                 .setJdbcUrl("jdbc:mysql://localhost:3306/activitiexam?useUnicode=true&characterEncoding=utf8");  
41.         processEngineConfiguration.setJdbcUsername("root");  
42.         processEngineConfiguration.setJdbcPassword("root");  
43.         ProcessEngine processEngine = processEngineConfiguration  
44.                 .buildProcessEngine();  
45.   
46.         System.out.println(processEngine);  
47.         // 获取流程存储服务组件  
48.         RepositoryService repositoryService = processEngine  
49.                 .getRepositoryService();  
50.   
51.         // 获取运行时服务组件  
52.         RuntimeService runtimeService = processEngine.getRuntimeService();  
53.   
54.         // 获取流程任务组件  
55.         TaskService taskService = processEngine.getTaskService();  
56.   
57.         // 1、部署流程文件  
58.         repositoryService.createDeployment().name("MyProcess")  
59.                 .addClasspathResource("diagrams/" + str + ".bpmn").deploy();  
60.   
61.         // 2、启动流程  
62.         ProcessInstance processInstance = runtimeService  
63.                 .startProcessInstanceByKey("myProcess");  
64.         String end="1";//processInstance.getId() != null  
65.         while (end.equalsIgnoreCase("1")) {  
66.             // 3、查询第一个任务  
67.             Task task = taskService.createTaskQuery()  
68.                     .processInstanceId(processInstance.getId()).singleResult();  
69.             ;  
70.             if (task != null) {  
71.                 System.out.println("============" + task.getId()  
72.                         + "============" + task.getName() + "============");  
73.                 str = readDataFromConsole("Please input result:");  
74.                 Map<String, Object> variables = new HashMap<String, Object>();  
75.                 Boolean result;  
76.                 if (str.equalsIgnoreCase("true")) {  
77.                     result = true;  
78.                 } else {  
79.                     result = false;  
80.   
81.                 }  
82.                 variables.put("result", result);  
83.                 taskService.complete(task.getId(), variables); // 完成任务  
84.   
85.             }else {  
86.                 end="0";  
87.                 System.out.println("任务已经完成");  
88.             }   
89.   
90.         }  
91.   
92.     }  
93.   
94. }  

执行结果：

总结：

 

以上简单的拖拽实现是依赖于监听实现，监听的实现就必须实现相应的接口，这样对我们的业务颗粒就有所要求，当然以上只是简单实现，而且实现的方式是一个类对应一个监听，接下来会继续完善，应用多个类对应一个监听来实现。