目标：若依整合activiti6

好的，上边4篇，算是基础环境的准备，这篇开始终于进入了主题，开始整合activiti。

一、首先在根目录pom文件中声明activiti依赖，但是要移除activiti中的mybatis依赖，因为已经升级成mybatis-plus了，不清楚的往前翻一翻了解一下来龙去脉。

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二、application.yml，添加如下配置，注意这是要配在spring下一层的

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三、创建ruoyi-activiti模块
 1、层级和包的情况如图

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 2、activiti模块的pom，引入这两个依赖

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 3、根目录pom，声明activiti模块，因为其他模块也是做么做的，咱别特立独行

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 4、admin模块的pom，引入activiti依赖

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 5、修改RuoYiApplication.java文件

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 6、运行项目，如果提示act_**表不存在的话，在application-druid.yml里url参数后边拼上nullCatalogMeansCurrent=true，我的是这样的
url: jdbc:mysql://localhost:3306/ry_mp_activiti?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=true&serverTimezone=GMT%2B8&rewriteBatchedStatements=true&nullCatalogMeansCurrent=true

 7、项目运行起来不报错，数据库里会多出28张act开头的表

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四、下面加点代码试试，看能不能正常用

 1、在activiti模块的config包里创建ActivitiConfig.java，这是为了注入activiti的api

package com.ruoyi.act.config;

import org.activiti.engine.*;
import org.activiti.spring.ProcessEngineFactoryBean;
import org.activiti.spring.SpringProcessEngineConfiguration;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.PlatformTransactionManager;

import javax.sql.DataSource;

/**
 * @author badcat
 * @date 2021-08-23 0:22
 */
@Configuration
public class ActivitiConfig {
    @Autowired
    private DataSource dataSource;
    @Autowired
    private PlatformTransactionManager platformTransactionManager;

    private SpringProcessEngineConfiguration springProcessEngineConfiguration(){
        SpringProcessEngineConfiguration spec = new SpringProcessEngineConfiguration();
        spec.setDataSource(dataSource);
        spec.setTransactionManager(platformTransactionManager);
        spec.setDatabaseSchemaUpdate("true");
        return spec;
    }

    private ProcessEngineFactoryBean processEngine(){
        ProcessEngineFactoryBean processEngineFactoryBean = new ProcessEngineFactoryBean();
        processEngineFactoryBean.setProcessEngineConfiguration(springProcessEngineConfiguration());
        return processEngineFactoryBean;
    }


    @Bean
    public RepositoryService repositoryService() throws Exception{
        return processEngine().getObject().getRepositoryService();
    }
    @Bean
    public RuntimeService runtimeService() throws Exception{
        return processEngine().getObject().getRuntimeService();
    }
    @Bean
    public TaskService taskService() throws Exception{
        return processEngine().getObject().getTaskService();
    }
    @Bean
    public HistoryService historyService() throws Exception{
        return processEngine().getObject().getHistoryService();
    }
    @Bean
    public FormService formService() throws Exception{
        return processEngine().getObject().getFormService();
    }
    @Bean
    public IdentityService identityService() throws Exception{
        return processEngine().getObject().getIdentityService();
    }

}

 2、创建一个测试controller写个部署流程的api

package com.ruoyi.act.controller;

import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Deployment;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author badcat
 * @date 2021-08-23 0:25
 */
@RestController
@RequestMapping("/act")
public class ACT_Test {
    @Autowired
    private RepositoryService repositoryService;

    /**
     * 根据文件路径部署流程
     */
    @GetMapping("/initDeploymentBPMN")
    public String initDeploymentBPMN(){
        String filename = "BPMN/test.bpmn";
        Deployment deployment = this.repositoryService.createDeployment()
                .addClasspathResource(filename)
                .name("流程部署测试uel_v3")
                .deploy();
        return deployment.getName();
    }
}

 3、创建流程文件（流程文件自己想办法搞一个，或者去我码云上下载）

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若依整合activiti工作已完成，这个算是里程碑性质了，所以码云上版本升到2.0吧。
这部分代码放到了码云https://gitee.com/study_badcat/ry_mp_activiti，v2.0分支。