建议收藏,从零开始创建一个Activiti工作流,手把手教你完成

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环境配置

项目环境:
JDK1.8
tomcat7
maven3.5
开发工具:
IDEA
activiti7

创建项目

目标:创建一个maven项目,集成Activiti,并自动生成25张数据库表

准备工作

在数据库中运行:
CREATE DATABASE activiti DEFAULT CHARACTER SET utf8;
用于创建Activiti数据库
在项目中会使用到BPMN图形,所以要先安装actiBPM插件,安装方法如下:
在IDEA中实用快捷键Shift+Ctrl+Alt+S打开环境中心
![](https://i0.hdslb.com/bfs/article/c9b0fca907612cd395b368e5b4c987c93355e5cb.jpg)

新建一个maven项目

1.点击new Project创建一个新项目
![](https://i0.hdslb.com/bfs/article/abfed8d41848ba9e1aa16798c5aa70be86583ecb.jpg)
2.选择maven项目创建
![](https://i0.hdslb.com/bfs/article/fa5d325fb28e39031a479b0834ec1535cb3af628.jpg)
3.填写项目信息
![](https://i0.hdslb.com/bfs/article/ab3d32712035266540a8b445b08bd130aa7eefeb.jpg)
4.设置maven信息
![](https://i0.hdslb.com/bfs/article/b1c21c9695c4c040c6537c50b739eae023b2dfd8.jpg)
5.点击flsh完成项目创建,创建结构如下
![](https://i0.hdslb.com/bfs/article/9defa89c6ce39f957a2a07642e76f12d7a5e38d4.jpg)
6.补全项目中main文件夹下的java,resource等源文件夹
在IDEA中实用快捷键Shift+Ctrl+Alt+S打开环境中心,选择main包,右键new folder依次新建缺少的文件夹
![](https://i0.hdslb.com/bfs/article/967f6a9c5b894698d015e2559f5d41873c52b903.jpg)
7.创建完成后与对应文件源一一点击对应
![](https://i0.hdslb.com/bfs/article/1ab8814f883a875864416a2b7b36f032d03d4926.jpg)
8.在resources包下创建activiti.cfg.xml
![](https://i0.hdslb.com/bfs/article/4c632fe075fce0c6fe8df04486887b6edc075146.jpg)
代码如下:
<?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"
      xmlns:tx="http://www.springframework.org/schema/tx"
      xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/contex http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
   <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
       <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
       <property name="url" value="jdbc:mysql://192.168.0.114:3306/activiti"/>
       <property name="username" value="root"/>
       <property name="password" value="123456"/>
   </bean>
   <bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
       <property name="dataSource" ref="dataSource"></property>
       <property name="databaseSchemaUpdate" value="true"/>
   </bean>
</beans>
9.在resources包下创建log4j.properties
![](https://i0.hdslb.com/bfs/article/2b56e1474279572d6757e84e8caccd7aa8e2626e.jpg)
代码如下
# Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE            debug   info   warn error fatal
log4j.rootCategory=debug, CONSOLE, LOGFILE
# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE
# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m
# LOGFILE is set to be a File appender using a PatternLayout.
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=/Users/apple/学习/study/activity/activity_01/xis.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m
9.在test包下创建测试类,生成数据库表文件
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngineConfiguration;
import org.activiti.engine.ProcessEngines;
import org.junit.Test;
/**
* @author : YXC
* @version : 1.0
* @description :
* @date : 2020/11/17 16:50
*/
public class ActivitiTest {
   @Test
   public  void testGenTable(){
       //1.创建ProcessEngineConfiguration对象
       ProcessEngineConfiguration configuration = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti.cfg.xml");
       //2.创建ProcessEngine对象
       ProcessEngine processEngine = configuration.buildProcessEngine();
       System.out.println(processEngine);
   }
   @Test
   public void testGenTable2(){
       //使用下面这种方式生成表的条件
       //1.activiti配置文件名称必须为activiti.cfg.xml
       //2.bean的id必须为"processEngineConfiguration"
       ProcessEngine defaultProcessEngine = ProcessEngines.getDefaultProcessEngine();
       System.out.println(defaultProcessEngine);
   }
}
10.生成表结构如下
![](https://i0.hdslb.com/bfs/article/5673461847d929e879b7cfded7f8d31b85bbb5ca.jpg)
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