activiti5基础和springboot整合

说明

主要针对springboot和activiti5进行整合使用。

开发环境：

jdk1.8
activiti5.22.0
mysql5.7.26

软件推荐：

idea
sqlyog：可以直接查看bpmn和png两种资源文件。
actiBPM插件
- 商店安装
- 离线安装

什么是activiti？

自行百度

pom依赖项（包括了整合springboot所需的）

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>org.example</groupId><artifactId>activiti5-study</artifactId><version>1.0-SNAPSHOT</version><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.2.4.RELEASE</version></parent><properties><mysql.version>8.0.19</mysql.version><activiti.version>5.22.0</activiti.version><mybatis.version>2.1.3</mybatis.version><log4j.version>1.2.17</log4j.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-actuator</artifactId></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>${mysql.version}</version></dependency><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>${mybatis.version}</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.2</version></dependency><!--activiti--><dependency><groupId>org.activiti</groupId><artifactId>activiti-engine</artifactId><version>${activiti.version}</version></dependency><dependency><groupId>org.activiti</groupId><artifactId>activiti-spring</artifactId><version>${activiti.version}</version></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

普通方式生成数据表

java

import lombok.extern.slf4j.Slf4j;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngineConfiguration;
import org.activiti.engine.ProcessEngines;@Slf4j
public class InitTables {public static void main(String[] args) {init2();}/*** 方式1*/public static void init1() {ProcessEngineConfiguration configuration= ProcessEngineConfiguration.createStandaloneProcessEngineConfiguration();configuration.setDatabaseSchemaUpdate("true");configuration.setJdbcDriver("com.mysql.cj.jdbc.Driver");configuration.setJdbcUrl("jdbc:mysql://localhost:3306/activiti5_study?serverTimezone=PRC&nullCatalogMeansCurrent=true&useUnicode=true&charaterEncoding=utf-8&useSSL=false");configuration.setJdbcUsername("root");configuration.setJdbcPassword("123456");ProcessEngine processEngine = configuration.buildProcessEngine();log.info("成功获取到引擎={}，初始化数据表完成",processEngine);}/*** 方式2，用这种方式必须保证resource目录下存在activiti.cfg.xml文件，* 否则defaultProcessEngine为null并且不能初始化出25张数据表*/public static void init2() {ProcessEngine defaultProcessEngine = ProcessEngines.getDefaultProcessEngine();log.info("成功获取到引擎={}，初始化数据表完成",defaultProcessEngine);}/*** 方式3，用这种方式必须保证resource目录下存在activiti.cfg.xml文件，* 否则会抛出异常并且不能初始化出25张数据表*/public static void init3() {ProcessEngine processEngine = ProcessEngineConfiguration.createProcessEngineConfigurationFromResourceDefault().buildProcessEngine();log.info("成功获取到引擎={}，初始化数据表完成",processEngine);}}

activiti.cfg.xml

<?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/beanshttp://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"><!-- 这里可以使用 链接池 dbcp--><bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"><property name="driverClassName" value="com.mysql.cj.jdbc.Driver" /><property name="url" value="jdbc:mysql://localhost:3306/activiti5_study?serverTimezone=PRC&amp;nullCatalogMeansCurrent=true&amp;useUnicode=true&amp;charaterEncoding=utf-8&amp;useSSL=false" /><property name="username" value="root" /><property name="password" value="123456" /><property name="maxActive"