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Chapter 5: Activiti process shunting judgment, judging to go to different task nodes

2022-08-05 10:21:00 【Full stack programmer webmaster】

大家好,又见面了,我是你们的朋友全栈君.

Here we undertake the previous blog post of the column,

Ask for leave in the process we will have a judgment,Because the general leave monitor has the right to directly approve and approve,Without the approval of the class teacher,There needs to be a judgement here.;

Here we assist a leave process,如下：

流程图如下：

So how do you judge which antenna is going?,That is, whether to go or notleave003这个节点呢,Here we need to write built-in expressions,类似el表达式：

另外一条线：

Next we create a new class,如下,Need to modify the flow chart file name in the deployment process definition method：

对了,There is also a need to modify the startup processkey,The flow chart of the previous test casekey是StudentLeaveProcess00,现在改成StudentLeaveProcess02.如下：

代码如下：

package com.xiaoyexinxixn.ActivityLesson.flow;

import static org.junit.Assert.*;

import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.TaskService;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.junit.Test;

import com.xiaoyexinxixn.ActivityLesson.model.Student;

public class StudentLeaveProcess2 {
	//Get the default process engine instance,会自动读取activiti.cfg.xml ,So we have to strictly define the name of the configuration file
	private ProcessEngine processEngine =ProcessEngines.getDefaultProcessEngine();
	
	/**
	 * 部署流程定义
	 */
	@Test
	public void deploy() {
		//获取部署相关service,这些都是activiti封装好的api接口,还有很多,The following will also be used a lot
		Deployment deployment=processEngine.getRepositoryService()
		//创建部署
		.createDeployment()
		//Load flowchart resource file
		.addClasspathResource("diagrams/StudentLeave2.bpmn")
		//Load process image
		.addClasspathResource("diagrams/StudentLeave2.png")
		//流程名称
		.name("leave02")
		//部署流程
		.deploy();
		System.out.println("流程部署的ID: "+deployment.getId());
		System.out.println("流程部署的Name: "+deployment.getName());
	}
	
	/*
	 * 启动流程实例
	 */
	@Test
	public void start(){
		//运行启动流程的servicee
		ProcessInstance pi=processEngine.getRuntimeService()
		//定义流程表的KEY字段值,key值是我们前面定义好的key,可在act_re_procdef表中的key_字段中找到,
		.startProcessInstanceByKey("studentLeaveProcess02");
		System.out.println(pi.getId());
		System.out.println(pi.getProcessDefinitionId());
	} }

运行deploy（）方法,部署流程,After success, look at the process deployment table：act_re_deployment：

是有leave02的;

Then start the process again,

然后完成任务,to test our judgment.

到leave02节点;

Then we use what we learned in the previous chapter,在节点leave02结束的时候设置msg变量的值,So as to determine which node to go.

代码：

/**
	 * 完成任务时设置流程变量
	 */
	@Test
	public void completeTaskVariablesTest(){
		Map<String, Object> variables=new HashMap<String,Object>();
		variables.put("msg", "common");
		processEngine.getTaskService().complete("72502",variables);
	}

运行后,Found that the data in the task table is gone,说明没有走leave03节点,说明是没有问题的.

Go to the settings in the same waymsg为“important”chance to goleave03节点.

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