07-jbpm工作流之根据流程变量分配任务Task

小鱼儿 2022-01-10 09:55 242阅读 0赞

\* 任务活动分配  
 \*  1.使用流程变量： assignee="\#\{manager\}" 在Expression设置\#\{manager\}  
 \*  2.使用类处理AssignmentHandler :assignable.setAssignee(userId);  
 \*  3.TaskService.assignTask(taskId,userId);

Java Code ：

package cn.edu.zust.itee.task;
    
    import java.io.InputStream;
    
    import org.jbpm.api.Configuration;
    import org.jbpm.api.ProcessEngine;
    import org.jbpm.api.ProcessInstance;
    import org.junit.Test;
    
    /**
     * @author 郑勇
     * 2013-7-10 16:26
     * 任务活动分配
     *  1.使用流程变量： assignee="#{manager}" 在Expression设置#{manager}
     *  2.使用类处理AssignmentHandler :assignable.setAssignee(userId);
     *  3.TaskService.assignTask(taskId,userId);
     */
    public class TaskVariable {
    	
    	ProcessEngine processEngine= Configuration.getProcessEngine();
    	@Test
    	public void testTaskActivity(){
    		
    		//部署流程定义
    		//获得当前包中的文件
    		InputStream in = this.getClass().getResourceAsStream("test.jpdl.xml");
    		processEngine.getRepositoryService()
    		             .createDeployment()
    		             .addResourceFromInputStream("test.jpdl.xml", in)
    		             .deploy();
    		//设置流程变量
    /**
    方法一：设置占位参数：
    		Map<String,Object> mapVariable = new HashMap<String,Object> ();
    		mapVariable.put("manager", "丽水3");
    		ProcessInstance pi = processEngine.getExecutionService().startProcessInstanceByKey("test", mapVariable);
    	             在配置文件xml中配置占位参数： <task g="312,60,92,52" name="task1" assignee="#{manager}">
     */	
    		
    		//方法二：实现AssignmentHandler接口，并在配置文件xml中声明
    		// 如下：<assignment-handler class="cn.edu.zust.itee.task.AssignmentHandlerImpl"></assignment-handler>
    		//启动流程实例
    		ProcessInstance pi = processEngine.getExecutionService().startProcessInstanceByKey("test");
    		System.out.println("processIntenceId="+pi.getId());
    		
    	}
    	@Test
    	public void signal(){
    		//让指定的Execution(即：ProcessInstance)向后执行一步
    		//（excutionId对应jbpm4_execution表中的“ID_”字段）
    		String excutionId = "test.360007";
    		processEngine.getExecutionService().signalExecutionById(excutionId);
    	}
    
    	
    }

流程配置文件test.jpdl.xml

<?xml version="1.0" encoding="UTF-8"?>
    
    <process name="test" xmlns="http://jbpm.org/4.4/jpdl">
       <start name="start1" g="149,64,48,48">
          <transition name="to task1" to="task1" g="-52,-22"/>
       </start>
       <task name="task1" g="312,60,92,52">
          <assignment-handler class="cn.edu.zust.itee.task.AssignmentHandlerImpl"></assignment-handler>
          <transition name="to end1" to="end1" g="-50,-22"/>
       </task>
       <end name="end1" g="501,81,48,48"/>
    </process>

任务分配类：

/**
     * 
     */
    package cn.edu.zust.itee.task;
    
    import org.jbpm.api.model.OpenExecution;
    import org.jbpm.api.task.Assignable;
    import org.jbpm.api.task.AssignmentHandler;
    
    /**
     * @author 郑勇
     * 2013-7-10
     */
    public class AssignmentHandlerImpl implements AssignmentHandler {
    
    	@Override
    	public void assign(Assignable assignable, OpenExecution execution) throws Exception {
    		System.out.println("进入了--------AssignmentHandlerImpl");
    		//计算出任务的办理人
    //		String userId =execution.getVariable(key);
    //		String userId =hibernateSession.createQuery(hql).uniqueResult();
    				
    		//指定当前任务办理人（任务分配）
    		String userId = "王五";
    		assignable.setAssignee(userId);
    	}
    
    }