/**

     * 启动流程实例

     */

    @Test

    public void start(){

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

        variables.put("userId", "张三");

        ProcessInstance pi=processEngine.getRuntimeService() // 运行时Service

            .startProcessInstanceByKey("studentLevaeProcess6",variables); // 流程定义表的KEY字段值

        System.out.println("流程实例ID:"+pi.getId());

        System.out.println("流程定义ID:"+pi.getProcessDefinitionId());

    }

package com.shyroke.activiti.listenter;

import org.activiti.engine.delegate.DelegateTask;

import org.activiti.engine.delegate.TaskListener;

public class MyTaskListener implements TaskListener {

    public void notify(DelegateTask delegateTask) {

        delegateTask.setAssignee("李四");

    }

}