欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页

Activiti工作流学习(三)Activiti工作流与spring集成

程序员文章站 2024-03-23 17:47:16
...

一.前言

      前面Activiti工作流的学习,说明了Activiti的基本应用,在我们开发中可以根据实际的业务参考Activiti的API去更好的理解以及巩固。我们实际的开发中我们基本上都使用spring框架进行开发,现在来说明一下Activiti工作流与spring集成,Activiti工作流与spring集成还算比较简单,可以参考Activiti的API来进行整合。

二.Activiti常用的表

---------------------------------------------部署对象和流程定义相关的表---------------------------------------------

--部署对象信息表 
SELECT T.*, T.ROWID FROM ACT_RE_DEPLOYMENT T;

--流程定义表 
--ID_ 由KEY_ + VERSION_ + 随机生成是数组成
SELECT T.*, T.ROWID FROM ACT_RE_PROCDEF T where t.category_='1' order by t.version_ asc;

--资源文件表
SELECT T.*, T.ROWID FROM ACT_GE_BYTEARRAY T;

--主键生成策略表
SELECT T.*, T.ROWID FROM ACT_GE_PROPERTY T;

------------------------------------------流程实例、执行对象、任务------------------------------------------------

--正在执行的执行对象表
-- 执行ID_ 56  流程实例ID_ 56  流程定义ID_ _3701622B-4133-7B3D-F50F-E14B4F21E847:1:55  正在运行的任务定义ID_ 【可变】 USERTASKE736BEF8-4133-7B3D-F510-7B2DE7BEA8C6
SELECT T.*, T.ROWID FROM ACT_RU_EXECUTION T;

--流程实例历史表 开始信息
--历史流程定义ID_ 56 流程S实例ID_ 56 业务KEY_10000001 流程定义ID_ _3701622B-4133-7B3D-F50F-E14B4F21E847:1:55 开始任务节点ID_ STARTEVENT52B3145F-C133-7B3D-F50F-E6D48BA60EAE
SELECT T.*, T.ROWID FROM ACT_HI_PROCINST T;

--正在执行的任务对象表
--任务ID_ 68  执行ID_ 56  流程实例ID_ 56  流程定义ID_ _3701622B-4133-7B3D-F50F-E14B4F21E847:1:55  任务节点ID_ USERTASKE736BEF8-4133-7B3D-F510-7B2DE7BEA8C6
SELECT T.*, T.ROWID FROM ACT_RU_TASK T;

--历史任务流程实例信息
--历史任务ID_ 68   流程实例ID_ 56  执行实例ID_ 56   流程定义ID_ _3701622B-4133-7B3D-F50F-E14B4F21E847:1:55  任务节点ID_ USERTASKE736BEF8-4133-7B3D-F510-7B2DE7BEA8C6   表单KEY_ /PAGES/HOLIDAY/HOLIDAYMANAGE/HOLIDAYFORMHANDLE.JSP
--历史任务ID_ 74   流程实例ID_ 56  执行实例ID_ 56  流程定义ID_ _3701622B-4133-7B3D-F50F-E14B4F21E847:1:55  任务节点ID_ USERTASK04A84BE1-1133-7B3D-F511-1D0B7BB0A668   表单KEY_ /PAGES/HOLIDAY/HOLIDAYMANAGE/HOLIDAYFORMVIEW.JSP
SELECT T.*, T.ROWID FROM ACT_HI_TASKINST T;

--所有活动节点历史任务表
--历史任务ID_58 流程定义ID_ _3701622B-4133-7B3D-F50F-E14B4F21E847:1:55 流程实例ID_ 56  流程执行ID_ 56  任务节点ID_ STARTEVENT52B3145F-C133-7B3D-F50F-E6D48BA60EAE
--历史任务ID_67 流程定义ID_ _3701622B-4133-7B3D-F50F-E14B4F21E847:1:55 流程实例ID_ 56  流程执行ID_ 56  任务节点ID_ USERTASKE736BEF8-4133-7B3D-F510-7B2DE7BEA8C6   任务ID_ 68 
--历史任务ID_73 流程定义ID_ _3701622B-4133-7B3D-F50F-E14B4F21E847:1:55 流程实例ID_ 56  流程执行ID_ 56  任务节点ID_ USERTASK04A84BE1-1133-7B3D-F511-1D0B7BB0A668   任务ID_ 74 
SELECT T.*, T.ROWID FROM ACT_HI_ACTINST T;

----------------------------------------流程变量信息--------------------------------------------------
--正在执行的流程变量信息
SELECT T.*, T.ROWID FROM ACT_RU_VARIABLE T;

--历史流程变量信息 存放历史表单重要信息
--流程实例ID_ 56  执行实例ID_ 56 任务ID_
SELECT T.*, T.ROWID FROM ACT_HI_VARINST T;


-------------------------------------------历史意见信息-----------------------------------------------

--历史审批意见表
--任务ID_ 68  流程定义ID_ 56  
SELECT T.*, T.ROWID FROM ACT_HI_COMMENT T;

-----------------------------------------节点参与者信息-------------------------------------------------
--任务办理人表(个人任务、组任务)
SELECT T.*, T.ROWID FROM ACT_RU_IDENTITYLINK T;

--历史任务办理人表(个人任务、组任务)
SELECT T.*, T.ROWID FROM ACT_HI_IDENTITYLINK T;

--临时对象
SELECT T.*, T.ROWID FROM EA_IST.IST_APPR_BUSI_DATA T

三.Activiti与spring整合xml配置文件

向spring配置文件中,添加一个spring-workflow2-activiti.xml配置文件,里面如下:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-2.5.xsd">

    <!--工作流引擎配置 -->
    <bean id="processEngineConfiguration" class="com.shine.workflow2.spring.ShineSpringProcessEngineConfiguration">
        <property name="dataSource" ref="dataSource" />
        <property name="transactionManager" ref="transactionManager" />
        <property name="databaseSchemaUpdate" value="false" />
        <property name="jobExecutorActivate" value="false" />
         <!-- 组织机构适配  -->
        <property name="organizationConnector"  ref="organizationAdapter" />

     </bean>
     
      <!-- 组织机构适配实现  -->
     <bean id="organizationAdapter" class="com.shine.workflow2.organization.impl.OrganizationAdapter" />

    <!--工作流引擎 -->
    <bean id="processEngine" class="com.shine.workflow2.spring.ShineProcessEngineFactoryBean"> 
        <property name="processEngineConfiguration" ref="processEngineConfiguration" />
    </bean>
    
    
    <!--扩展服务 -->
    <bean id="processDefinitionService" factory-bean="processEngine"
        factory-method="getProcessDefinitionService" />
    <bean id="processLogService" factory-bean="processEngine"
        factory-method="getProcessLogService" />
    <bean id="processManagementService" factory-bean="processEngine"
        factory-method="getProcessManagementService" />
    
    <!--原生服务 -->
    <bean id="repositoryService" factory-bean="processEngine"
        factory-method="getRepositoryService" />
    <bean id="runtimeService" factory-bean="processEngine"
        factory-method="getRuntimeService" />
    <bean id="taskService" factory-bean="processEngine"
        factory-method="getTaskService" />
    <bean id="historyService" factory-bean="processEngine"
        factory-method="getHistoryService" />
    <bean id="managementService" factory-bean="processEngine"
        factory-method="getManagementService" />
    <bean id="formService" factory-bean="processEngine"
        factory-method="getFormService" />
    <bean id="identityService" factory-bean="processEngine"
        factory-method="getIdentityService" />
    
</beans>

四.Activiti工作流常用service 

  1.BaseProcessService

/**
 * 
 */
package com.shine.eosp.workflow2.common.process;

import org.activiti.engine.impl.persistence.entity.ProcessDefinitionEntity;
import org.activiti.engine.impl.pvm.PvmActivity;
import org.activiti.engine.impl.pvm.process.ActivityImpl;
import org.activiti.engine.impl.task.TaskDefinition;
import org.activiti.engine.repository.ProcessDefinition;
import org.activiti.engine.runtime.Execution;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;

import com.shine.workflow2.exception.WorkflowException;

/**
 * 
 * 类说明: 常用工作流核心操作封装 .
 * 
 * <pre>
 * 修改日期          修改人              修改原因
 * 2016-6-2		hongwz   	   新建
 * </pre>
 */
public interface BaseProcessService {
	
	
	/**
	 * 方法说明 : 根据流程定义Key查询最新流程定义.
	 * 
	 * @param processDefinitionKey
	 * @throws WorkflowException 
	 */
	public ProcessDefinition findLatestProcessDefinitionByPrcDefKey(String processDefinitionKey) throws WorkflowException;
	
	/**
	 * 方法说明 : 根据流程定义Id查询流程定义.
	 * 
	 * @param processDefinitionId  流程定义Id
	 * @throws WorkflowException 
	 */
	public ProcessDefinitionEntity findProcessDefinitionEntityByProcDefId(String processDefinitionId) throws WorkflowException;
    	
	/**
	 * 
	 * 方法说明  : 根据流程实例Id查询流程实例.
	 * 
	 * @param processInstanceId 流程实例Id
	 * @return
	 * @throws WorkflowException
	 */
	public ProcessInstance findProcessInstanceByProcInst(String processInstanceId) throws WorkflowException;
	
	/**
	 * 根据流程实例Id查询流程实例.
	 * 
	 * @param processInstanceId
	 * @throws WorkflowException
	 */
	public Execution findExecutionByProcInst(String processInstanceId) throws WorkflowException;
	
	/**
	 * 方法说明 : 根据流程实例Id查询任务.
	 * 
	 * @param processInstanceId 流程实例Id
	 * @throws WorkflowException
	 */
	public Task findTaskByProcInstId(String processInstanceId) throws WorkflowException;
	
	/**
	 * 方法说明 : 根据实例Id查询任务.
	 * 
	 * @param executionId 实例Id
	 * @throws WorkflowException
	 */
	public Task findTaskByExecutionId(String executionId) throws WorkflowException;
	
	/**
	 * 方法说明 : 根据活动节点查询任务定义.
	 * 
	 * @param activityImpl  活动节点
	 * @throws WorkflowException
	 */
	public TaskDefinition findTaskDefinitionByActivityImpl(ActivityImpl activityImpl) throws WorkflowException;
	
    /**
     * 方法说明 : 查询上一个节点.
     * 
     * @param activityImpl 活动节点
     * @param activityId 当前活动节点ID  
     * @param elString
     * @throws ShineException
     */
	public TaskDefinition beforeTaskDefinition(ActivityImpl activityImpl,String activityId, String elString) throws WorkflowException;
	
    /**
     * 方法说明 : 查询下一个节点.
     * 
     * @param activityImpl 活动节点
     * @param activityId 当前活动节点ID  
     * @param elString
     * @throws ShineException
     */
	public TaskDefinition nextTaskDefinition(ActivityImpl activityImpl,String activityId, String elString) throws WorkflowException;

	/**
	 * 方法说明: 根据活动节点、活动线路查询线路的连接线.
	 * 
	 * @throws WorkflowException
	 */
	public PvmActivity findPvmActivity(ActivityImpl activityImpl, String transitions) throws WorkflowException;
	
	/**
	 * 方法说明 :根据流程定义Id查询任务定义
	 * 
	 * @param processDefinitionId 流程定义Id
	 * @return
	 * @throws WorkflowException
	 */
	public TaskDefinition findTaskDefinition(String processDefinitionId) throws WorkflowException;
    
    /**
     * 方法说明 : 添加任务意见.
     * 
     * @param taskId      任务Id
     * @param processInstanceId   流程实例Id
     * @param comment     意见
     * @throws WorkflowException
     */
	public void addTaskComment(String taskId, String processInstanceId, String comment) throws WorkflowException;
    
    /**
     * 方法说明 : 拾取任务.
     * 
     * @param taskId  任务Id
     * @param operator 办理人
     * @throws WorkflowException
     */
	public void claimTask(String taskId, String operator) throws WorkflowException;
    
	/**
	 * 方法说明 : 根据流程定义Id查询最新流程定义.
	 * 
	 * @param processDefinitionId 流程定义Id
	 * @return
	 * @throws WorkflowException
	 */
	public ProcessDefinition findProcessDefinitionByPrcDefId(String processDefinitionId) throws WorkflowException;
}

2.BaseProcessServiceImpl

/**
 * 
 */
package com.shine.eosp.workflow2.common.process;

import java.util.Iterator;
import java.util.List;

import org.activiti.engine.HistoryService;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.TaskService;
import org.activiti.engine.impl.RepositoryServiceImpl;
import org.activiti.engine.impl.bpmn.behavior.UserTaskActivityBehavior;
import org.activiti.engine.impl.persistence.entity.ProcessDefinitionEntity;
import org.activiti.engine.impl.pvm.PvmActivity;
import org.activiti.engine.impl.pvm.PvmTransition;
import org.activiti.engine.impl.pvm.process.ActivityImpl;
import org.activiti.engine.impl.task.TaskDefinition;
import org.activiti.engine.repository.ProcessDefinition;
import org.activiti.engine.runtime.Execution;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;

import com.shine.util.CollectionUtil;
import com.shine.workflow2.exception.WorkflowException;

/**
 * 
 * 类说明: 常用工作流核心操作封装 .
 * 
 * <pre>
 * 修改日期          修改人              修改原因
 * 2016-6-2		hongwz   	   新建
 * </pre>
 */
public class BaseProcessServiceImpl implements BaseProcessService {
	
	/**
	 * log.
	 */
    private static Logger logger = LoggerFactory.getLogger(BaseProcessServiceImpl.class);
	   
	@Autowired
	private RepositoryService repositoryService;
	
	@Autowired
	private RuntimeService runtimeService;
	
	@Autowired
	private TaskService taskService;
	
	@Autowired
	private HistoryService historyService;
	
	/**
	 * 方法说明 : 根据流程定义Key查询最新流程定义.
	 * 
	 * @param processDefinitionKey  流程定义Key
	 * @return
	 * @throws WorkflowException 
	 */
	@Override
	public ProcessDefinition findLatestProcessDefinitionByPrcDefKey(String processDefinitionKey) throws WorkflowException{
		
		ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery()
														       .processDefinitionKey(processDefinitionKey)
														       .latestVersion()
														       .singleResult();
		return processDefinition;
				                
	}
	
	/**
	 * 方法说明 : 根据流程定义Id查询最新流程定义.
	 * 
	 * @param processDefinitionId 流程定义Id
	 * @return
	 * @throws WorkflowException
	 */
	@Override
	public ProcessDefinition findProcessDefinitionByPrcDefId(String processDefinitionId) throws WorkflowException{
		ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery()
                .processDefinitionId(processDefinitionId)
                .orderByProcessDefinitionVersion()
                .desc()
                .singleResult();
		
		return processDefinition;
	}
	
	/**
	 * 方法说明 : 根据流程定义Id查询流程定义.
	 * 
	 * @param processDefinitionId  流程定义Id
	 * @return  
	 * @throws WorkflowException 
	 */
	@Override
	public ProcessDefinitionEntity findProcessDefinitionEntityByProcDefId(String processDefinitionId) throws WorkflowException{
		
		ProcessDefinitionEntity processDefinitionEntity  = (ProcessDefinitionEntity) ((RepositoryServiceImpl) repositoryService)
				                                                  .getDeployedProcessDefinition(processDefinitionId);
		return processDefinitionEntity;
	}
	
	/**
	 * 
	 * 方法说明  : 根据流程实例Id查询流程实例.
	 * 
	 * @param processInstanceId 流程实例Id
	 * @return
	 * @throws WorkflowException
	 */
	@Override
	public ProcessInstance findProcessInstanceByProcInst(String processInstanceId) throws WorkflowException{
		return runtimeService.createProcessInstanceQuery()
				             .processInstanceId(processInstanceId)
				             .singleResult();
	}
	
    
	/**
	 * 根据流程实例Id查询流程实例.
	 * 
	 * @param processInstanceId
	 * @return
	 * @throws WorkflowException
	 */
	@Override
	public Execution findExecutionByProcInst(String processInstanceId) throws WorkflowException{
		return runtimeService.createExecutionQuery().processInstanceId(processInstanceId).singleResult();
	}
	
	/**
	 * 方法说明 : 根据流程实例Id查询任务.
	 * 
	 * @param processInstanceId 流程实例Id
	 * @return
	 * @throws WorkflowException
	 */
	@Override
	public Task findTaskByProcInstId(String processInstanceId) throws WorkflowException{
		return taskService.createTaskQuery().processInstanceId(processInstanceId).singleResult();
	}
	
	/**
	 * 方法说明 : 根据实例Id查询任务.
	 * 
	 * @param executionId 实例Id
	 * @return
	 * @throws WorkflowException
	 */
	@Override
	public Task findTaskByExecutionId(String executionId) throws WorkflowException{
		return taskService.createTaskQuery().executionId(executionId).singleResult();
	}
	
	/**
	 * 方法说明 : 根据活动节点查询任务定义.
	 * 
	 * @param activityImpl  活动节点
	 * @return
	 * @throws WorkflowException
	 */
	@Override
	public TaskDefinition findTaskDefinitionByActivityImpl(ActivityImpl activityImpl) throws WorkflowException{
		  return ((UserTaskActivityBehavior)activityImpl.getActivityBehavior()).getTaskDefinition();  
	}
	
    /**
     * 方法说明 : 查询上一个节点.
     * 
     * @param activityImpl 活动节点
     * @param activityId 当前活动节点ID  
     * @param elString
     * @return
     * @throws ShineException
     */
	@Override
	public TaskDefinition beforeTaskDefinition(ActivityImpl activityImpl,String activityId, String elString) throws WorkflowException {
		if("userTask".equals(activityImpl.getProperty("type")) && !activityId.equals(activityImpl.getId())){  
			TaskDefinition taskDefinition = null;
			if(activityImpl != null){
				taskDefinition = findTaskDefinitionByActivityImpl(activityImpl);
			}
		    return taskDefinition;
        }else{  
            List<PvmTransition> inTransitions = activityImpl.getIncomingTransitions();   //通过活动节点查询所有线路
            if(!CollectionUtil.isEmpty(inTransitions)){
	            List<PvmTransition> inTransitionsTemp = null;  
	            for(PvmTransition tr:inTransitions){    
	                PvmActivity ac = tr.getSource();      //获取线路的前节点    
	                if("exclusiveGateway".equals(ac.getProperty("type"))){  
	                    inTransitionsTemp = ac.getIncomingTransitions();  
	                    if(inTransitionsTemp.size() == 1){  
	                        return beforeTaskDefinition((ActivityImpl)inTransitionsTemp.get(0).getSource(), activityId, elString);  
	                    }else if(inTransitionsTemp.size() > 1){  
	                        for(PvmTransition tr1 : inTransitionsTemp){  
	                            Object s = tr1.getProperty("conditionText");  
	                            if(elString.equals(StringUtils.replacePattern(StringUtils.trim(s.toString()), " ", ""))){  
	                                return beforeTaskDefinition((ActivityImpl)tr1.getSource(), activityId, elString);  
	                            }  
	                        }  
	                    }  
	                }
	            }
            }
            return null;  
        }  
	}
	
	
    /**
     * 方法说明 : 查询下一个节点.
     * 
     * @param activityImpl 活动节点
     * @param activityId 当前活动节点ID  
     * @param elString
     * @return
     * @throws ShineException
     */
	@Override
	public TaskDefinition nextTaskDefinition(ActivityImpl activityImpl,String activityId, String elString) throws WorkflowException {
		
		if("userTask".equals(activityImpl.getProperty("type")) && !activityId.equals(activityImpl.getId())){  
			TaskDefinition taskDefinition = null;
			if(activityImpl != null){
				taskDefinition = findTaskDefinitionByActivityImpl(activityImpl);
			}
		    return taskDefinition;
        }else{ 
            List<PvmTransition> outTransitions = activityImpl.getOutgoingTransitions();   //通过活动节点查询所有线路
            if(!CollectionUtil.isEmpty(outTransitions)){
            	List<PvmTransition> outTransitionsTemp = null;  
	            for(PvmTransition tr:outTransitions){   
	                PvmActivity ac = tr.getDestination();         //获取线路的终点节点    
	                if("exclusiveGateway".equals(ac.getProperty("type"))){  
	                    outTransitionsTemp = ac.getOutgoingTransitions();  
	                    if(outTransitionsTemp.size() == 1){  
	                        return nextTaskDefinition((ActivityImpl)outTransitionsTemp.get(0).getDestination(), activityId, elString);  
	                    }else if(outTransitionsTemp.size() > 1){  
	                        for(PvmTransition tr1 : outTransitionsTemp){  
	                            Object s = tr1.getProperty("conditionText");  
	                            if(s != null && elString.equals(StringUtils.replacePattern(StringUtils.trim(s.toString()), " ", ""))){  
	                                return nextTaskDefinition((ActivityImpl)tr1.getDestination(), activityId, elString);  
	                            }  
	                        }  
	                    }  
	                }else if("userTask".equals(ac.getProperty("type"))){  
	                	return findTaskDefinitionByActivityImpl((ActivityImpl)ac);
	                } 
	                else if("startEvent".equals(ac.getProperty("type"))){  
	                	return findTaskDefinitionByActivityImpl((ActivityImpl)ac);
	                }
	                else{  
	                    logger.info(ac.getProperty("type").toString());  
	                }  
	            }
            }
            return null;  
        } 
	
	}
	
	/**
	 * 方法说明: 根据活动节点、活动线路查询线路的连接线.
	 * 
	 * @return
	 * @throws WorkflowException
	 */
	@SuppressWarnings("rawtypes")
	@Override
	public PvmActivity findPvmActivity(ActivityImpl activityImpl, String transitions) throws WorkflowException{
		
		PvmActivity activity = null;
		List<PvmTransition> pvmTransitions = activityImpl.getOutgoingTransitions();   //获取所有线路
		
		for (Iterator iterator = pvmTransitions.iterator(); iterator.hasNext();) {
				PvmTransition pvmTransition = (PvmTransition) iterator.next();
				PvmActivity pvmActivity = pvmTransition.getDestination();   		//获取下一个任务节点
			    String transitionsVal = (String) pvmActivity.getProperty("name");
			    if(transitions.equals(transitionsVal)){
			    	activity = pvmActivity;
			    	break;
			    }
		}
		return activity;
	}
	
	/**
	 * 方法说明 :根据流程定义Id查询任务定义
	 * 
	 * @param processDefinitionId 流程定义Id
	 * @return
	 * @throws WorkflowException
	 */
	@Override
	public TaskDefinition findTaskDefinition(String processDefinitionId) throws WorkflowException{
		
		//获取流程定义
		ProcessDefinitionEntity processDefinitionEntity = findProcessDefinitionEntityByProcDefId(processDefinitionId);
		TaskDefinition tdf = null;
		
		if(processDefinitionEntity != null){
			List<ActivityImpl> activityImpls = processDefinitionEntity.getActivities();    //获取所有活动的节点
			for(int i = activityImpls.size() - 1; i > 0; i-- ){
				ActivityImpl activityImpl = activityImpls.get(i);     
				String startEventType = (String) activityImpl.getProperty("type");
				if("startEvent".equals(startEventType)){
					tdf = nextTaskDefinition(activityImpl, activityImpl.getId(), null);
				}
			}	
		}
	    return tdf;
	}
	
    /**
     * 方法说明 : 添加任务意见.
     * 
     * @param taskId      任务Id
     * @param processInstanceId   流程实例Id
     * @param comment     意见
     * @throws WorkflowException
     */
	@Override
	public void addTaskComment(String taskId,String processInstanceId,String comment) throws WorkflowException{
		 taskService.addComment(taskId, processInstanceId, comment);
	}
	
    /**
     * 方法说明 : 拾取任务.
     * 
     * @param taskId  任务Id
     * @param operator 办理人
     * @throws WorkflowException
     */
	@Override
	public void claimTask(String taskId,String operator) throws WorkflowException{
		 taskService.claim(taskId, operator);
	}
}