activiti工作流委托功能的设计和实现

最近公司开发一个项目，客户提出了一个需求，用户在出差的时候，可以将自己的工作进行委托。可以指定委托时间、委托工作内容、指定委托人等等内容。

然后我就上网查询资料，发现activiti工作流本身并不支持这种委托功能，于是就自己参考一些资料，进行开发，基本实现客户所需的功能。

1.用户需求分析：

（1）不同任务流程委托给不同人

（2）全盘委托

（3）委托给多个人共同决策（一票否决，一票通过）

（4）委托时间

（5）本项目功能在SSM框架下开发，前端采用VUE框架

2.设计数据表

ACT_RU_DELEGATE //委托配置数据表

CREATE TABLE `act_ru_delegate` (

  `ID` bigint(20) NOT NULL AUTO_INCREMENT,

  `ASSIGNEE` varchar(200) DEFAULT NULL,

  `ATTORNEY` varchar(200) DEFAULT NULL,

  `START_TIME` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,

  `END_TIME` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',

  `PROCESS_DEFINITION_ID` varchar(100) DEFAULT NULL,

  `STATUS` int(11) DEFAULT NULL,

  PRIMARY KEY (`ID`)

) ENGINE=InnoDB AUTO_INCREMENT=44 DEFAULT CHARSET=utf8;

ACT_HI_DELEGATE //委托配置数据表

CREATE TABLE `act_hi_delegate` (

  `ID` bigint(20) NOT NULL AUTO_INCREMENT,

  `ASSIGNEE` varchar(200) DEFAULT NULL,

  `ATTORNEY` varchar(200) DEFAULT NULL,

  `DELEGATE_TIME` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,

  `TASK_ID` varchar(100) DEFAULT NULL,

  `STATUS` int(11) DEFAULT NULL,

  PRIMARY KEY (`ID`)

) ENGINE=InnoDB AUTO_INCREMENT=35 DEFAULT CHARSET=utf8;

3.model模型实现

1.DelegateInfo类

package com.paomo.model;

import java.util.Date;

public class DelegateInfo {

    private int id;

    private String Assignee;

    private String Attorney;

    private Date Start_Time;

    private Date End_Time;

    private String Process_Definition_Id;

    private Integer Status;

    public int getId() {

        return id;

    }

    public void setId(int id) {

        this.id = id;

    }

    public DelegateInfo(){

        super();

    }

    public DelegateInfo(int id, String assignee, String attorney, Date start_Time, Date end_Time,

            String process_Definition_Id, Integer status) {

        super();

        this.id = id;

        Assignee = assignee;

        Attorney = attorney;

        Start_Time = start_Time;

        End_Time = end_Time;

        Process_Definition_Id = process_Definition_Id;

        Status = status;

    }

    public String getAssignee() {

        return Assignee;

    }

    public void setAssignee(String assignee) {

        Assignee = assignee;

    }

    public String getAttorney() {

        return Attorney;

    }

    public void setAttorney(String attorney) {

        Attorney = attorney;

    }

    public Date getStart_Time() {

        return Start_Time;

    }

    public void setStart_Time(Date start_Time) {

        Start_Time = start_Time;

    }

    public Date getEnd_Time() {

        return End_Time;

    }

    public void setEnd_Time(Date end_Time) {

        End_Time = end_Time;

    }

    public String getProcess_Definition_Id() {

        return Process_Definition_Id;

    }

    public void setProcess_Definition_Id(String process_Definition_Id) {

        Process_Definition_Id = process_Definition_Id;

    }

    public Integer getStatus() {

        return Status;

    }

    public void setStatus(Integer status) {

        Status = status;

    }

}

2.DelegateHistory类

package com.paomo.model;

import java.util.Date;

    public class DelegateHistory {

        private int id;

        private String Assignee;

        private String Attorney;

        private Date Delegate_Time;

        private String TaskId;

        private Integer Status;

        public DelegateHistory(){

            super();

        }

        public int getId() {

            return id;

        }

        public void setId(int id) {

            this.id = id;

        }

        public String getAssignee() {

            return Assignee;

        }

        public void setAssignee(String assignee) {

            Assignee = assignee;

        }

        public String getAttorney() {

            return Attorney;

        }

        public void setAttorney(String attorney) {

            Attorney = attorney;

        }

        public Date getDelegate_Time() {

            return Delegate_Time;

        }

        public void setDelegate_Time(Date delegate_Time) {

            Delegate_Time = delegate_Time;

        }

        public String getTaskId() {

            return TaskId;

        }

        public void setTaskId(String taskId) {

            TaskId = taskId;

        }

        public Integer getStatus() {

            return Status;

        }

        public void setStatus(Integer status) {

            Status = status;

        }

        public DelegateHistory(int id, String assignee, String attorney, Date delegate_Time, String taskId,

                Integer status) {

            super();

            this.id = id;

            Assignee = assignee;

            Attorney = attorney;

            Delegate_Time = delegate_Time;

            TaskId = taskId;

            Status = status;

        }

}

4.DelegateService层接口

package com.paomo.service;

import java.util.List;

import java.util.Map;

import com.paomo.model.DelegateInfo;

public interface DelegateService {

    DelegateInfo getDelegateInfo(String targetAssignee,String targetProcessDefinitionId);

    void saveRecord(String assignee, String attorney, String taskId);

    void removeRecord(Long id);

    void removeRecord2(int id);

    void addDelegateInfo(String assignee, String attorney,String startTime, String endTime, String processDefinitionId);

    List<DelegateInfo> listAll(Map<String, Object> emap);

    List<Map<String,Object>> listAllDetail(Map<String, Object> emap);

    void update(Map<String,Object> resMap);

    List<Map<String, Object>> getProcessList();

    int getCount(String userId);

    List<Map<String, Object>> listAllDetail2(Map<String, Object> emap);

    int getCount2(String userId);

}

5.DelegateServiceImpl实现类

package com.paomo.service.impl;

import java.util.Date;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import javax.annotation.PostConstruct;

import javax.annotation.Resource;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Component;

import org.springframework.stereotype.Service;

import com.paomo.dao.DelegateHistoryDao;

import com.paomo.dao.DelegateInfoDao;

import com.paomo.model.DelegateHistory;

import com.paomo.model.DelegateInfo;

import com.paomo.service.DelegateService;

@Service("DelegateService")

public class DelegateServiceImpl implements DelegateService {

    @Resource

    private DelegateInfoDao delegateInfoDao;

    @Resource

    private DelegateHistoryDao delegateHistoryDao;

    public static DelegateServiceImpl testUtils;

    @PostConstruct

    public void init() {

        testUtils = this;

    } 

    public DelegateInfo getDelegateInfo(String targetAssignee,String targetProcessDefinitionId) {  

         Map<String,Object> map=new HashMap<String, Object>();

         map.put("assignee", targetAssignee);

         List<DelegateInfo> list=delegateInfoDao.listAll(map);

        for (DelegateInfo delegateInfo : list) {  

            String processDefinitionId = (String) delegateInfo.getProcess_Definition_Id();

            Date startTime = (Date) delegateInfo.getStart_Time();

            Date endTime = (Date) delegateInfo.getEnd_Time();  

            if (timeNotBetweenNow(startTime, endTime)) {  

                continue;

            }  

            if ((processDefinitionId == null)|| processDefinitionId.equals(targetProcessDefinitionId)) {

                return delegateInfo;

            }

        }  

        return null;

    }  

    public void saveRecord(String assignee, String attorney, String taskId) {

        DelegateHistory delegateHistory=new DelegateHistory();

        delegateHistory.setAssignee(assignee);

        delegateHistory.setAttorney(attorney);

        delegateHistory.setTaskId(taskId);

        delegateHistory.setDelegate_Time(new java.sql.Date(System.currentTimeMillis()));

        delegateHistory.setStatus(1);

        delegateHistoryDao.add(delegateHistory);

    }  

    public void removeRecord(Long id) {  

        delegateInfoDao.delete(id);

    }  

  public void removeRecord2(int id) {  

      delegateHistoryDao.delete(id);

    }  

    public void addDelegateInfo(String assignee, String attorney,String startTime, String endTime, String processDefinitionId) {

        DelegateInfo delegateInfo=new DelegateInfo();

        Map<String,Object> resMap = new HashMap<String,Object>();

        resMap.put("assignee", assignee);

        resMap.put("attorney", attorney);

        resMap.put("endTime", endTime);

        resMap.put("startTime", startTime);

        resMap.put("processDefinitionId", processDefinitionId);

        resMap.put("status", 1);

        delegateInfoDao.save(resMap);

    }  

    private boolean timeNotBetweenNow(Date startTime, Date endTime) {

        Date now = new Date(System.currentTimeMillis());  

        if (startTime != null) {

            return now.before(startTime);

        }  

        if (endTime != null) {

            return now.after(endTime);

        }  

        return false;

    }

    @Override

    public List<DelegateInfo> listAll(Map<String,Object> reMap) {

        return delegateInfoDao.listAll(reMap);

    }

    @Override

    public void update(Map<String, Object> resMap) {

        delegateInfoDao.update(resMap);

    }

    @Override

    public List<Map<String, Object>> getProcessList() {

        return delegateInfoDao.getProcessList();

    }

    @Override

    public int getCount(String userId) {

        return delegateInfoDao.getCount(userId);

    }

    @Override

    public List<Map<String, Object>> listAllDetail(Map<String, Object> emap) {

        return delegateInfoDao.listAllDetail(emap);

    }

    @Override

    public List<Map<String, Object>> listAllDetail2(Map<String, Object> emap) {

        return delegateHistoryDao.listAllDetail(emap);

    }

    @Override

    public int getCount2(String userId) {

        return delegateHistoryDao.getCount(userId);

    }

}

6.DelegateInfoDao

package com.paomo.dao;

import java.util.Date;

import java.util.List;

import java.util.Map;

import com.paomo.model.DelegateInfo;

public interface DelegateInfoDao {

    DelegateInfo getDelegateInfo(String targetAssignee,String targetProcessDefinitionId);

    void saveRecord(String assignee, String attorney, String taskId);

    void removeRecord(Long id);

    void addDelegateInfo(String assignee, String attorney,Date startTime, Date endTime, String processDefinitionId);

    List<DelegateInfo> listAll(Map<String, Object> reMap);

    void delete(Long id);

    DelegateInfo getById(Long id);

    void save(Map<String, Object> resMap);

    void update(Map<String, Object> resMap);

    List<Map<String, Object>> getProcessList();

    int getCount(String userId);

     List<Map<String,Object>> listAllDetail(Map<String, Object> emap);

}

7.DelegateHistoryDao

package com.paomo.dao;

import java.util.List;

import java.util.Map;

import com.paomo.model.DelegateHistory;

public interface DelegateHistoryDao {

    void update(DelegateHistory delegateHistory);

    void add(DelegateHistory delegateHistory);

    List<Map<String, Object>> listAllDetail(Map<String, Object> emap);

    int getCount(String assignee);

    void delete(int id);

}

8.DelegateMapper

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.paomo.dao.DelegateInfoDao">

    <insert id="save" parameterType="Map">

    insert into act_ru_delegate(ASSIGNEE,ATTORNEY,START_TIME,END_TIME,PROCESS_DEFINITION_ID,STATUS) values(#{assignee},#{attorney},#{startTime},#{endTime},#{processDefinitionId},1)

    </insert>

    <delete id="delete" parameterType="Long">

    delete from act_ru_delegate where ID=#{id}

    </delete>

       <select id="listAll" parameterType="Map" resultType="DelegateInfo">

    select * from act_ru_delegate where STATUS=1 and ASSIGNEE=#{assignee}

    </select>

    <select id="listAllDetail" parameterType="Map" resultType="Map">

    select a.ID, a.START_TIME startTime,a.END_TIME endTime,b.NAME_ processName,c.`name` assignee,d.`name` attorney,a.ATTORNEY attorneyId,a.ASSIGNEE assigneeId from act_ru_delegate a

LEFT JOIN act_re_procdef b ON a.PROCESS_DEFINITION_ID=b.ID_

LEFT JOIN act_id_user c ON a.ASSIGNEE=c.id

LEFT JOIN act_id_user d ON a.ATTORNEY=d.id

 where a.STATUS=1 and a.ASSIGNEE=#{assignee}

    <if test="currentPage!=-1">

            limit #{currentPage},#{pageSize}

        </if>

    </select>

      <select id="getCount" parameterType="String" resultType="Integer">

    select count(*) from act_ru_delegate where STATUS=1 and ASSIGNEE=#{assignee} order by ID desc

    </select>

     <select id="getProcessList" resultType="Map">

    SELECT ID_,NAME_ FROM act_re_procdef GROUP BY NAME_ ORDER BY VERSION_ desc

    </select>

    <update id="update" parameterType="Map">

    update act_ru_delegate

    <set>

            <if test="assigneeId!=null and assigneeId!=''">

                ASSIGNEE=#{assigneeId},

            </if>

            <if test="attorney!=null and attorney!=''">

                ATTORNEY=#{attorney},

            </if>

            <if test="startTime!=null and startTime!='NaN-aN-aN aN:aN:aN'">

                Start_Time=#{startTime},

            </if>

            <if test="endTime!=null and endTime!='NaN-aN-aN aN:aN:aN'">

                End_Time=#{endTime},

            </if>

            <if test="processDefinitionId!=null and processDefinitionId!=''">

                Process_Definition_Id=#{processDefinitionId},

            </if>

            </set>

            where ID =#{ID}

    </update>

</mapper>

9.DelegateHistoryMapper

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.qajt.paomo.DelegateHistoryDao">

     <insert id="add" parameterType="DelegateInfo">

    insert into act_hi_delegate(ASSIGNEE,ATTORNEY,DELEGATE_TIME,TASK_ID,STATUS) values(

    #{Assignee},#{Attorney},#{Delegate_Time},#{TaskId},#{Status})

    </insert>

       <select id="listAllDetail" parameterType="Map" resultType="Map">

       select a.ID,a.TASK_ID taskId, a.DELEGATE_TIME delegateTime,c.`name` assignee,d.`name` attorney,a.ATTORNEY attorneyId,a.ASSIGNEE assigneeId from act_hi_delegate a

LEFT JOIN act_id_user c ON a.ASSIGNEE=c.id

LEFT JOIN act_id_user d ON a.ATTORNEY=d.id

 where a.STATUS=1 and a.ASSIGNEE=#{assignee}

    <if test="currentPage!=-1">

            limit #{currentPage},#{pageSize}

        </if>

    </select>

     <select id="getCount" parameterType="Map" resultType="Integer">

       select count(*) from act_hi_delegate a

 where a.STATUS=1 and a.ASSIGNEE=#{assignee}

    </select>

    <delete id="delete" parameterType="Integer">

    delete from act_hi_delegate where ID=#{id}

    </delete>

</mapper>

10.TaskAsigneeListenerImpl监听类的实现对单一指派人 assignee

package com.paomo.service.impl;

import java.util.Date;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import javax.annotation.PostConstruct;

import javax.annotation.Resource;

import org.activiti.engine.delegate.DelegateTask;

import org.activiti.engine.delegate.TaskListener;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Qualifier;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import org.springframework.stereotype.Component;

import org.springframework.stereotype.Repository;

import org.springframework.stereotype.Service;

import com.paomo.dao.DelegateInfoDao;

import com.paomo.model.DelegateInfo;

import com.paomo.service.DelegateService;

@Component("TaskAsigneeListenerImpl")

public class TaskAsigneeListenerImpl implements TaskListener {

    @Resource

    private DelegateService delegateService;  

    @Override

    public void notify(DelegateTask delegateTask) {

          ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");   //ssm框架下直接注入service出错，所以这块要用XML的方式对service进行注入

          DelegateService dsService = (DelegateService) ac.getBean("DelegateService");

          //如果有委托，设置委托人

          String assignee = delegateTask.getAssignee();

          String processDefinitionId = delegateTask.getProcessDefinitionId();

          DelegateInfo delegateInfo = dsService.getDelegateInfo(assignee,

                  processDefinitionId);

          if (delegateInfo == null) {

              return;

          }

          String attorney = delegateInfo.getAttorney();

          delegateTask.setAssignee(attorney);

          dsService.saveRecord(assignee, attorney, delegateTask.getId());

    }

}

11.在工作流流程图中配置监听类

12.新建委托，新建流程进行测试。

启动一个新流程，测试可得发给张刚的流程，最终发到了周星驰那里。

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