任务历史查询

1.分析几张历史表，查询某用户涉及的所有已办流程实例列表，通过对每个流程实例进行分析。
一种方法是通过jBPM HistoryService历史服务进行操作（参照用户手册5.8. HistoryService历史服务），
另一种方法是自己编写HQL语句实现历史表的查询。

2.自己设计历史记录表，在需要记录的节点使用event-listener进行监听，实现记录。

这里以经典的请假为例子。请假成功，人事可以入库查询。具体流程如下图所示

 

leaveListener是一个事件监听，配置在app-service.xml中，方便leave.jpdl.xml进行调用

App-service.xml代码

1. <bean id="leaveListener" class="com.javaeye.oa.web.listener.LeaveListener" >   
2.         <property name="leaveService" ref="leaveService"/>   
3. </bean>   
4. <bean id="leaveService" class="com.javaeye.oa.service.task.impl.LeaveServiceImpl">   
5. </bean>  

Leave.jpdl.xml代码

1. <?xml version="1.0" encoding="UTF-8"?>   
2.   
3. <process name="leave" xmlns="http://jbpm.org/4.3/jpdl">   

   <start g="201,14,48,48" name="开始">   

      <transition g="-42,-10" name="请假" to="填写请假单"/>   

   </start>   

   <task assignee="#{applyName}" g="178,87,92,52" name="填写请假单">   

      <transition g="-97,2" name="判断是不是经理" to="是不是经理"/>   

   </task>   

   <decision expr="#{manager}" g="204,158,48,48" name="是不是经理">   

      <transition g="-23,-11" name="否" to="经理审核"/>   

      <transition g="14,-11" name="是" to="老板审批"/>   

   </decision>   

   <task assignee="#{approvingOfficer}" g="103,252,92,52" name="经理审核">   

      <transition g="150,450:10,-21" name="经理批准" to="结束">   

            <event-listener expr="#{leaveListener}">   

                <field name="endMsg">   

                    <string value="批准请假，人事入库" />   

                </field>   

            </event-listener>   

      </transition>   

      <transition g="-22,-22" name="请假天数>3" to="老板审批"/>   

      <transition g="-61,-1" name="经理不批准" to="终止"/>   

      <transition g="149,114:-55,82" name="经理驳回" to="填写请假单"/>   

   </task>   

   <task assignee="#{approvingOfficer}" g="278,251,92,52" name="老板审批">   

      <transition g="326,450:-58,-24" name="老板批准" to="结束">   

            <event-listener expr="#{leaveListener}">   

                <field name="endMsg">   

                    <string value="批准请假，人事入库" />   

                </field>   

            </event-listener>   

      </transition>   

      <transition g="7,0" name="老板不批准" to="终止"/>   

      <transition g="323,114:13,61" name="老板驳回" to="填写请假单"/>   

   </task>   

   <end g="219,429,48,48" name="结束" state="confirm"/>   

   <end g="220,360,48,48" name="终止" state="dissent"/>   

</process>  

<?xml version="1.0" encoding="UTF-8"?><process name="leave" xmlns="http://jbpm.org/4.3/jpdl"><start g="201,14,48,48" name="开始"><transition g="-42,-10" name="请假" to="填写请假单"/></start><task assignee="#{applyName}" g="178,87,92,52" name="填写请假单"><transition g="-97,2" name="判断是不是经理" to="是不是经理"/></task><decision expr="#{manager}" g="204,158,48,48" name="是不是经理"><transition g="-23,-11" name="否" to="经理审核"/><transition g="14,-11" name="是" to="老板审批"/></decision><task assignee="#{approvingOfficer}" g="103,252,92,52" name="经理审核"><transition g="150,450:10,-21" name="经理批准" to="结束"><event-listener expr="#{leaveListener}"><field name="endMsg"><string value="批准请假，人事入库" /></field></event-listener></transition><transition g="-22,-22" name="请假天数>3" to="老板审批"/><transition g="-61,-1" name="经理不批准" to="终止"/><transition g="149,114:-55,82" name="经理驳回" to="填写请假单"/></task><task assignee="#{approvingOfficer}" g="278,251,92,52" name="老板审批"><transition g="326,450:-58,-24" name="老板批准" to="结束"><event-listener expr="#{leaveListener}"><field name="endMsg"><string value="批准请假，人事入库" /></field></event-listener></transition><transition g="7,0" name="老板不批准" to="终止"/><transition g="323,114:13,61" name="老板驳回" to="填写请假单"/></task><end g="219,429,48,48" name="结束" state="confirm"/><end g="220,360,48,48" name="终止" state="dissent"/></process>

applyName、manager、approvingOfficer几个变量在实际操作中进行设置
endMsg测试时候使用，实际应用中可以删除

当经理批准申请或老板批准申请的时候，事件响应，进行请假申请入库。
Leavelistener.java代码

1. package com.javaeye.oa.web.listener;   
2.   
3. import org.jbpm.api.listener.EventListener;   
4. import org.jbpm.api.listener.EventListenerExecution;   
5.   
6. import com.javaeye.oa.entity.task.Leave;   
7. import com.javaeye.oa.service.task.LeaveService;   
8.   
9. public class LeaveListener implements EventListener {   
10.   
11.     private static final long serialVersionUID = 7098294717133900660L;   
12.     private String endMsg;//endMsg测试时候使用，实际应用中可以删除   
13.     private LeaveService leaveService;   
14.        
15.     public void setEndMsg(String endMsg) {   
16.         this.endMsg = endMsg;   
17.     }   
18.     //leaveService进行set注入   
19.     public void setLeaveService(LeaveService leaveService) {   
20.         this.leaveService = leaveService;   
21.     }   
22.        
23.     public void notify(EventListenerExecution execution) throws Exception {   
24.   
25.         System.out.println("==============leaveListener:endMsg="+endMsg);   
26.         String applyName = (String) execution.getVariable("applyName");   
27.         String leaveDay = (String) execution.getVariable("leaveDay");   
28.         String applyTime = (String) execution.getVariable("applyTime");   
29.         String position = (String) execution.getVariable("position");   
30.         String content = (String) execution.getVariable("content");   
31.         String approvingOfficer = (String) execution.getVariable("approvingOfficer");   
32.            
33.         Leave leave = new Leave();   
34.         leave.setApplyName(applyName);   
35.         leave.setApplyTime(applyTime);   
36.         leave.setApprovingOfficer(approvingOfficer);   
37.         leave.setContent(content);   
38.         leave.setPosition(position);   
39.         leave.setLeaveDay(leaveDay);   
40.            
41.         leaveService.addLeave(leave);   
42.     }   
43. }  

package com.javaeye.oa.web.listener;import org.jbpm.api.listener.EventListener;import org.jbpm.api.listener.EventListenerExecution;import com.javaeye.oa.entity.task.Leave;import com.javaeye.oa.service.task.LeaveService;public class LeaveListener implements EventListener {private static final long serialVersionUID = 7098294717133900660L;private String endMsg;//endMsg测试时候使用，实际应用中可以删除private LeaveService leaveService;public void setEndMsg(String endMsg) {this.endMsg = endMsg;}//leaveService进行set注入public void setLeaveService(LeaveService leaveService) {this.leaveService = leaveService;}public void notify(EventListenerExecution execution) throws Exception {System.out.println("==============leaveListener:endMsg="+endMsg);String applyName = (String) execution.getVariable("applyName");String leaveDay = (String) execution.getVariable("leaveDay");String applyTime = (String) execution.getVariable("applyTime");String position = (String) execution.getVariable("position");String content = (String) execution.getVariable("content");String approvingOfficer = (String) execution.getVariable("approvingOfficer");Leave leave = new Leave();leave.setApplyName(applyName);leave.setApplyTime(applyTime);leave.setApprovingOfficer(approvingOfficer);leave.setContent(content);leave.setPosition(position);leave.setLeaveDay(leaveDay);leaveService.addLeave(leave);}}

Leave.java代码

1. package com.javaeye.oa.entity.task;   
2.   
3. public class Leave implements java.io.Serializable {   
4.   
5.     private static final long serialVersionUID = -3289821345085237147L;   
6.     private Long id;   
7.     private String applyName;   
8.     private String leaveDay;   
9.     private String position;   
10.     private String applyTime;   
11.     private String content;   
12.     private String approvingOfficer;   
13.   
14.     // Constructors   
15.   
16.     /** default constructor */   
17.     public Leave() {   
18.     }   
19. ...  

package com.javaeye.oa.entity.task;public class Leave implements java.io.Serializable {private static final long serialVersionUID = -3289821345085237147L;private Long id;private String applyName;private String leaveDay;private String position;private String applyTime;private String content;private String approvingOfficer;// Constructors/** default constructor */public Leave() {}...

当一切就绪，我们便开始进行实际操作。

 

 

 

--------------------------------------------------------------------------------------------------------

一。员工dylan点击请假链接

Java代码

1. public String leave() {   
2.   
3.      Map<String, Object> variables = new HashMap<String, Object>();   
4.      //applyName对应leave.jpdl.xml中相应变量，这里applyName为dylan   
5.      variables.put("applyName", "dylan");   
6.      ExecutionService executionService = processEngine.getExecutionService();   
7.      ProcessInstance processInstance = executionService.startProcessInstanceByKey("leave",variables);   
8.            
9.      if (processInstance.isActive("填写请假单")) {   
10.          url = "apply";   
11.      }   
12.      return url;   
13. }  

二。dylan在请假页面填写请假申请单

Apply.jsp代码

1. <%@page contentType="text/html;charset=UTF-8" %>   
2. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">   

<html xmlns="http://www.w3.org/1999/xhtml">   

    <head>   

        <title>填写申请单</title>   

    </head>   

    <body>   

        <form action="apply.action" method="POST">   

          <table width="300" border=1>   

            <tr>   

              <td><label>申请人</label></td>   

              <td><input type="text" value="dylan" name="applyName"></td>   

            </tr>   

            <tr>   

              <td><label>职位</label></td>   

              <td><input type="text" value="员工" name="position"></td>   

            </tr>   

            <tr>   

              <td><label>申请时间</label></td>   

              <td><input type="text" value="2010-01-10" name="applyTime"></td>   

            </tr>   

            <tr>   

              <td><label>请假天数</label></td>   

              <td><input type="text" value="1" name="leaveDay"></td>   

            </tr>   

            <tr>   

              <td><label>请假原因</label></td>   

              <td><textarea name="content" rows=3 cols=200>病假</textarea></td>   

            </tr>   

            <tr>   

              <td><input type="submit" value="申请"></td>   

              <td><input type="reset" value="取消"></td>   

            </tr>   

          </table>   

        </form>   

    </body>   

</html>  

三。dylan填写完成，提交请假单

Java代码

1. public String apply() {   
2.         Map<String,Object> variables = new HashMap<String,Object>();   

    String applyName = getRequest().getParameter("applyName");   

    String applyTime = getRequest().getParameter("applyTime");   

    String leaveDay = getRequest().getParameter("leaveDay");   

    String content = getRequest().getParameter("content");   

    String position = getRequest().getParameter("position");   

  

    variables.put("applyName", applyName);   

    variables.put("applyTime", applyTime);   

    variables.put("leaveDay", leaveDay);   

    variables.put("content", content);   

    variables.put("position", position);   

    if (position.trim().equals("经理")) {   

        variables.put("manager", "是");   

                variables.put("approvingOfficer", "S老板");   

    } else {   

        variables.put("manager", "否");   

                variables.put("approvingOfficer", "T经理");   

    }   

        TaskService taskService = processEngine.getTaskService();   

        //dylan即请假启动的时候applyName的值   

    taskList = taskService.findPersonalTasks("dylan");   

    task = taskList.get(0);   

    taskService.setVariables(task.getId(), variables);   

    taskService.completeTask(task.getId());   

        return SUCCESS;   

}  

 四。请假1天，职位为员工，直接经理进行审批，审批通过，即入库

Java代码

1. public String confirm() {   
2.         Map<String, Object> variables = new HashMap<String, Object>();   

        TaskService taskService = processEngine.getTaskService();   

        ExecutionService executionService = processEngine   

        .getExecutionService();   

        task = taskService.getTask(taskId);   

        execution = executionService.findExecutionById(task.getExecutionId());   

        if (execution.getProcessInstance().isActive("老板审批")) {   

            //approvingOfficer如果已存在值，则把之前值覆盖   

            variables.put("approvingOfficer", "S老板");   

        taskService.completeTask(taskId, "老板批准");   

    } else if (execution.getProcessInstance().isActive("经理审核")) {   

    String variable = (String) taskService.getVariable(taskId, "leaveDay");   

         if (Integer.valueOf(variable) > 3) {   

            taskService.completeTask(taskId, "请假天数>3");   

         } else {   

        taskService.completeTask(taskId, "经理批准");   

             }   

    }   

        return SUCCESS;   

}  

public String confirm() {Map<String, Object> variables = new HashMap<String, Object>();TaskService taskService = processEngine.getTaskService();ExecutionService executionService = processEngine.getExecutionService();task = taskService.getTask(taskId);execution = executionService.findExecutionById(task.getExecutionId());if (execution.getProcessInstance().isActive("老板审批")) {//approvingOfficer如果已存在值，则把之前值覆盖variables.put("approvingOfficer", "S老板");taskService.completeTask(taskId, "老板批准");} else if (execution.getProcessInstance().isActive("经理审核")) {String variable = (String) taskService.getVariable(taskId, "leaveDay");if (Integer.valueOf(variable) > 3) {taskService.completeTask(taskId, "请假天数>3");} else {taskService.completeTask(taskId, "经理批准");}}return SUCCESS;}

入库之后，人事即可对请假情况进行查看考核=。=