首先创建流程监听器和任务监听器的实体类，个人比较喜欢使用Delegate Expression方式，其他两种方式也可以
流程监听器
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package org.mpc.final_activiti;
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import java.io.Serializable;
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import org.activiti.engine.delegate.DelegateExecution;
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import org.activiti.engine.delegate.ExecutionListener;
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import org.activiti.engine.delegate.Expression;
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/**
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*
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* 可以使用 CLASS ,EXPRESSION,DELEGATE EXPRESSSION三种方式来创建监听器，这里使用第三种方式，其他两种方式和
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* 在servicetask中的使用方式相同
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*
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* */
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public
class ExectuionListenerDemo implements Serializable, ExecutionListener {
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/**
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* @Fields serialVersionUID : TODO(用一句话描述这个变量表示什么)
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*/
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private
static
final
long serialVersionUID =
8513750196548027535L;
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private Expression message;
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public Expression getMessage() {
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return message;
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}
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public void setMessage(Expression message) {
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this.message = message;
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}
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@Override
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public void notify(DelegateExecution execution) throws Exception {
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System.out.println(
"流程监听器" + message.getValue(execution));
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}
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}
任务监听器
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package org.mpc.final_activiti;
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import java.io.Serializable;
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import org.activiti.engine.delegate.DelegateTask;
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import org.activiti.engine.delegate.Expression;
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import org.activiti.engine.delegate.TaskListener;
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/**
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*
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* 任务监听器，实现TaskListener接口
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*
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* */
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public
class TaskListenerDemo implements Serializable, TaskListener {
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private Expression arg;
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public Expression getArg() {
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return arg;
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}
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public void setArg(Expression arg) {
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this.arg = arg;
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}
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@Override
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public void notify(DelegateTask delegateTask) {
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System.out.println(
"任务监听器:" + arg.getValue(delegateTask));
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}
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}
这两个监听器只是简单的表明了自己的身份，并打印出在流程中注入给他们的值
接着是流程定义图
从左到右依次是 空开始事件--排他网关--用户任务--空中间抛出事件--空结束事件
首先在空白处点击鼠标，接着在properties选项卡中做如下操作：
然后在排他网关、空中间抛出事件、以及节点之间的箭头上点击鼠标同样可以做如上的操作，这些都流程监听事件的配置
在usertask上我们特别配置usertask才有的任务监听器，配置过程如下图所示
和流程监听器的配置大同小异呢
展示一下配置结果的xml文件，特别注意一下加注释的地方
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<?xml version="1.0" encoding="UTF-8"?>
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<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">
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<process id="myProcess" name="My process" isExecutable="true">
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<extensionElements>
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<activiti:executionListener event="start" delegateExpression="${myprocessListener}">
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<activiti:field name="message">
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<activiti:string><![CDATA[流程启动]]>
</activiti:string>
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</activiti:field>
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</activiti:executionListener>
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<activiti:executionListener event="end" delegateExpression="${myprocessListener}">
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<activiti:field name="message">
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<activiti:string><![CDATA[流程结束]]>
</activiti:string>
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</activiti:field>
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</activiti:executionListener>
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</extensionElements>
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<startEvent id="startevent1" name="Start">
</startEvent>
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<exclusiveGateway id="exclusivegateway1" name="Exclusive Gateway">
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<extensionElements>
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<activiti:executionListener event="start" delegateExpression="${myprocessListener}">
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<activiti:field name="message">
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<activiti:string><![CDATA[排他网关开始]]>
</activiti:string>
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</activiti:field>
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</activiti:executionListener>
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<activiti:executionListener event="end" delegateExpression="${myprocessListener}">
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<activiti:field name="message">
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<activiti:string><![CDATA[排他网关结束]]>
</activiti:string>
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</activiti:field>
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</activiti:executionListener>
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</extensionElements>
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</exclusiveGateway>
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<sequenceFlow id="flow3" sourceRef="startevent1" targetRef="exclusivegateway1">
</sequenceFlow>
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<userTask id="usertask2" name="User Task" activiti:assignee="${user}">
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<extensionElements>
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<activiti:taskListener event="create" delegateExpression="${mytaskListener}">
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<activiti:field name="arg">
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<activiti:string><![CDATA[任务启动]]>
</activiti:string>
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</activiti:field>
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</activiti:taskListener>
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<activiti:taskListener event="assignment" delegateExpression="${mytaskListener}">
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<activiti:field name="arg">
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<activiti:string><![CDATA[分配人员]]>
</activiti:string>
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</activiti:field>
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</activiti:taskListener>
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<activiti:taskListener event="complete" delegateExpression="${mytaskListener}">
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<activiti:field name="arg">
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<activiti:string><![CDATA[任务完成]]>
</activiti:string>
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</activiti:field>
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</activiti:taskListener>
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<!-- 在可视化工具中无法给usertask加上流程监听器，但是，我们在xml中可以自己敲进去· -->
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<activiti:executionListener event="start" delegateExpression="${myprocessListener}">
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<activiti:field name="message">
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<activiti:string><![CDATA[流程启动任务]]>
</activiti:string>
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</activiti:field>
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</activiti:executionListener>
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<activiti:executionListener event="end" delegateExpression="${myprocessListener}">
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<activiti:field name="message">
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<activiti:string><![CDATA[流程关闭任务]]>
</activiti:string>
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</activiti:field>
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</activiti:executionListener>
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<!-- ........................................................................................................................................ -->
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</extensionElements>
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</userTask>
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<sequenceFlow id="flow4" sourceRef="exclusivegateway1" targetRef="usertask2">
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<extensionElements>
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<activiti:executionListener event="take" delegateExpression="${myprocessListener}">
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<activiti:field name="message">
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<activiti:string><![CDATA[从排他网关到用户任务，好长的一段路]]>
</activiti:string>
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</activiti:field>
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</activiti:executionListener>
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</extensionElements>
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</sequenceFlow>
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<intermediateThrowEvent id="noneintermediatethrowevent1" name="NoneThrowEvent">
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<extensionElements>
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<activiti:executionListener event="start" delegateExpression="${myprocessListener}">
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<activiti:field name="message">
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<activiti:string><![CDATA[中间事件开始]]>
</activiti:string>
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</activiti:field>
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</activiti:executionListener>
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<activiti:executionListener event="end" delegateExpression="${myprocessListener}">
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<activiti:field name="message">
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<activiti:string><![CDATA[中间事件结束]]>
</activiti:string>
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</activiti:field>
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</activiti:executionListener>
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</extensionElements>
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</intermediateThrowEvent>
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<sequenceFlow id="flow5" sourceRef="usertask2" targetRef="noneintermediatethrowevent1">
</sequenceFlow>
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<endEvent id="endevent1" name="End">
</endEvent>
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<sequenceFlow id="flow6" sourceRef="noneintermediatethrowevent1" targetRef="endevent1">
</sequenceFlow>
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</process>
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<bpmndi:BPMNDiagram id="BPMNDiagram_myProcess">
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<bpmndi:BPMNPlane bpmnElement="myProcess" id="BPMNPlane_myProcess">
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<bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
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<omgdc:Bounds height="35.0" width="35.0" x="160.0" y="180.0">
</omgdc:Bounds>
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</bpmndi:BPMNShape>
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<bpmndi:BPMNShape bpmnElement="exclusivegateway1" id="BPMNShape_exclusivegateway1">
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<omgdc:Bounds height="40.0" width="40.0" x="240.0" y="130.0">
</omgdc:Bounds>
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</bpmndi:BPMNShape>
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<bpmndi:BPMNShape bpmnElement="usertask2" id="BPMNShape_usertask2">
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<omgdc:Bounds height="55.0" width="105.0" x="325.0" y="123.0">
</omgdc:Bounds>
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</bpmndi:BPMNShape>
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<bpmndi:BPMNShape bpmnElement="noneintermediatethrowevent1" id="BPMNShape_noneintermediatethrowevent1">
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<omgdc:Bounds height="35.0" width="35.0" x="475.0" y="133.0">
</omgdc:Bounds>
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</bpmndi:BPMNShape>
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<bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
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<omgdc:Bounds height="35.0" width="35.0" x="555.0" y="133.0">
</omgdc:Bounds>
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</bpmndi:BPMNShape>
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<bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
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<omgdi:waypoint x="195.0" y="197.0">
</omgdi:waypoint>
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<omgdi:waypoint x="260.0" y="170.0">
</omgdi:waypoint>
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</bpmndi:BPMNEdge>
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<bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">
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<omgdi:waypoint x="280.0" y="150.0">
</omgdi:waypoint>
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<omgdi:waypoint x="325.0" y="150.0">
</omgdi:waypoint>
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</bpmndi:BPMNEdge>
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<bpmndi:BPMNEdge bpmnElement="flow5" id="BPMNEdge_flow5">
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<omgdi:waypoint x="430.0" y="150.0">
</omgdi:waypoint>
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<omgdi:waypoint x="475.0" y="150.0">
</omgdi:waypoint>
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</bpmndi:BPMNEdge>
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<bpmndi:BPMNEdge bpmnElement="flow6" id="BPMNEdge_flow6">
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<omgdi:waypoint x="510.0" y="150.0">
</omgdi:waypoint>
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<omgdi:waypoint x="555.0" y="150.0">
</omgdi:waypoint>
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</bpmndi:BPMNEdge>
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</bpmndi:BPMNPlane>
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</bpmndi:BPMNDiagram>
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</definitions>
为了让usertak产生一个指定人员的事件，我们给这个usertask弄一个指定人员
然后就是测试代码
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package final_activiti.progress;
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import java.util.HashMap;
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import java.util.Map;
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import org.activiti.engine.impl.test.PluggableActivitiTestCase;
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import org.activiti.engine.test.Deployment;
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import org.junit.Test;
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import org.mpc.final_activiti.ExectuionListenerDemo;
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import org.mpc.final_activiti.TaskListenerDemo;
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public
class ListenersTest extends PluggableActivitiTestCase {
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@Test
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@Deployment(resources =
"final_activiti/progress/listeners.bpmn")
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public void test() {
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Map<String, Object> map =
new HashMap<String, Object>();
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map.put(
"myprocessListener",
new ExectuionListenerDemo());
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map.put(
"mytaskListener",
new TaskListenerDemo());
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map.put(
"user",
"mpc");
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runtimeService.startProcessInstanceByKey(
"myProcess", map);
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taskService.complete(taskService.createTaskQuery().singleResult()
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.getId());
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;
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}
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}
测试结果：
分析：
1.我们给usertask定义的流程监听实现了
2.usertask中先执行流程监听的start、然后是分配人员、任务启动、任务完成、流程关闭任务；任务是包含在流程中的
原文地址：https://blog.csdn.net/u012613903/article/details/43732941