activiti自定义流程之Spring整合activiti-modeler实例（九）：历史任务查询

1.所有任务完成，流程也就结束了，查询历史任务或历史流程就要操作act_hi_taskinst表，用的都是historyService来调用相关的方法。
本节示例查询历史任务，历史流程便不再专门示例。


2.后台业务代码，
  （1）自定义的任务实体类

 package model;
 import java.util.Date;

 public class HisTaskModel {
     private String id;
     private String name;
     private String assignee;
     private String processInstanceId;
     private Date startTime;
     private Date endTime;
     private String cause;
     private String content;
     private String taskType;

     public String getCause() {
         return cause;
     }

     public void setCause(String cause) {
         this.cause = cause;
     }

     public String getContent() {
         return content;
     }

     public void setContent(String content) {
         this.content = content;
     }

     public String getTaskType() {
         return taskType;
     }

     public void setTaskType(String taskType) {
         this.taskType = taskType;
     }

     public String getId() {
         return id;
     }

     public void setId(String id) {
         this.id = id;
     }

     public String getName() {
         return name;
     }

     public void setName(String name) {
         this.name = name;
     }

     public String getAssignee() {
         return assignee;
     }

     public void setAssignee(String assignee) {
         this.assignee = assignee;
     }

     public String getProcessInstanceId() {
         return processInstanceId;
     }

     public void setProcessInstanceId(String processInstanceId) {
         this.processInstanceId = processInstanceId;
     }

     public Date getStartTime() {
         return startTime;
     }

     public void setStartTime(Date startTime) {
         this.startTime = startTime;
     }

     public Date getEndTime() {
         return endTime;
     }

     public void setEndTime(Date endTime) {
         this.endTime = endTime;
     }

     @Override
     public String toString() {
         return "HisTaskModel [id=" + id + ", name=" + name + ", assignee="
                 + assignee + ", processInstanceId=" + processInstanceId
                 + ", startTime=" + startTime + ", endTime=" + endTime
                 + ", cause=" + cause + ", content=" + content + ", taskType="
                 + taskType + "]";
     }
 }

  （2）业务逻辑：
这里需要注意的是，历史表中存在并非是单一类型的数据，就拿历史任务表来说，里边既有已经结束的任务，也有还没有结束的任务。
如果要单独查询结束了的任务，就可以调用finished()方法，查询的就是已经结束的任务。

 /**
      * 查询我的历史任务
      *
      * @author：tuzongxun
      * @Title: hisTask
      * @param @param req
      * @param @return
      * @return Object
      * @date Mar 18, 2016 9:12:07 AM
      * @throws
      */
     @RequestMapping(value = "/hisTask.do", method = RequestMethod.POST, produces = "application/json;charset=utf-8")
     @ResponseBody
     public Object hisTask(HttpServletRequest req) {
         Map<String, Object> map = new HashMap<String, Object>();
         boolean isLogin = this.isLogin(req);
         if (isLogin) {
             HttpSession session = req.getSession();
             String assignee = (String) session.getAttribute("userName");
             List<HistoricTaskInstance> hisTaskList1 = historyService
                     .createHistoricTaskInstanceQuery().taskAssignee(assignee)
                     .finished().list();
             List<HisTaskModel> hisTaskList = new ArrayList<HisTaskModel>();
             for (HistoricTaskInstance hisTask : hisTaskList1) {
                 HisTaskModel hisModel = new HisTaskModel();
                 List<HistoricVariableInstance> hisList = historyService
                         .createHistoricVariableInstanceQuery()
                         .processInstanceId(hisTask.getProcessInstanceId())
                         .list();
                 for (HistoricVariableInstance hisVariable : hisList) {
                     String name = hisVariable.getVariableName();
                     if (name.equals("content")) {
                         hisModel.setContent((String) hisVariable.getValue());
                     } else if (name.equals("cause")) {
                         hisModel.setCause((String) hisVariable.getValue());
                     } else if (name.equals("taskType")) {
                         hisModel.setTaskType((String) hisVariable.getValue());
                     }
                 }


                 hisModel.setAssignee(hisTask.getAssignee());
                 hisModel.setEndTime(hisTask.getEndTime());
                 hisModel.setId(hisTask.getId());
                 hisModel.setName(hisTask.getName());
                 hisModel.setProcessInstanceId(hisTask.getProcessInstanceId());
                 hisModel.setStartTime(hisTask.getStartTime());
                 hisTaskList.add(hisModel);
             }
             map.put("isLogin", "yes");
             map.put("userName",
                     (String) req.getSession().getAttribute("userName"));
             map.put("result", "success");
             map.put("data", hisTaskList);
         } else {
             map.put("isLogin", "no");
         }
         return map;
     }

3.angular js前台代码（前台只是做简单的展示，不多讲）：
  （1）app.js中配置路由：
  

 $stateProvider
    .state('hisTask', {
    url: "/hisTask",
    views: {
       'view': {
        templateUrl: 'activi_views/hisTask.html',
        controller: 'hisTaskCtr'
       }
    }
   });

   
  （2）逻辑相关代码：
 

  angular.module('activitiApp')
 .controller('hisTaskCtr', ['$rootScope','$scope','$http','$location', function($rootScope,$scope,$http,$location){
 $scope.init=function(){
         $http.post("./hisTask.do").success(function(result) {
             if(result.isLogin==="yes"){
                 console.log(result.data);
                 $rootScope.userName=result.userName;
                 $scope.taskList=result.data;
             }else{
                 $location.path("/login");
             }
         });
 }

 }])

4.对应的填写相关信息的页面：

 <div id="logdiv1" ng-init="init();">
    <p style="font-size:24px;margin-top:10px">历史任务列表</p>
    <center>
    <table border="1px" style="width:87%;font-size:18px;text-align:center;margin-top:1px;margin-left:2px;position:relative;float:left;" cellSpacing="0px" cellPadding="0px">
       <tr style="background-color:#ccc">
          <td>类型</td>
          <td>ID</td>
          <td>NAME</td>
          <td>流程实例Id</td>
          <td>开始时间</td>
          <td>受理人</td>
          <td>完成时间</td>
          <td>发起原因</td>
          <td>内容</td>
       </tr>
       <tr ng-repeat="task in taskList | orderBy:'id'" >
          <td>{{task.taskType}}</td>
          <td>{{task.id}}</td>
          <td>{{task.name}}</td>
          <td>{{task.processInstanceId}}</td>
          <td>{{task.startTime | date:"yyyy-MM-dd HH:mm:ss"}}</td>
          <td>{{task.assignee}}</td>
          <td>{{task.endTime | date:"yyyy-MM-dd HH:mm:ss"}}</td>
          <td>{{task.cause}}</td>
          <td>{{task.content}}</td>
       </tr>
    </table>
    </center>
 </div>