1. springCloud maven 多模块项目，在idea中集成activiti工作流项目。
2. springCloud项目以RuoYI 项目为基础搭建：https://gitee.com/y_project/RuoYi-Cloud
3. activiti工作流项目参照：https://gitee.com/calvinhwang123/RuoYi-Process
4. 首先在springcloud 项目中创建子模块：activiti，可以不选任何的依赖包。
5. 将RuoYi-Process中的后端代码复制到activiti子模块中，解决好各种依赖和冲突。
6. 由于activiti模块需要作为单独的项目启动，因此添加网关依赖，数据库连接依赖，公共依赖，activiti的依赖等：

<!-- SpringCloud Alibaba Nacos -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

        <!-- SpringCloud Alibaba Nacos Config -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
        </dependency>

        <!-- SpringBoot Actuator -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

<!-- Mysql Connector -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

<dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-spring-boot-starter-rest-api</artifactId>
            <version>${activiti.version}</version>
        </dependency>

        <!--activiti modeler 5.22 start-->
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-json-converter</artifactId>
            <version>6.0.0</version>
            <exclusions>
                <exclusion>
                    <groupId>org.activiti</groupId>
                    <artifactId>activiti-bpmn-model</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <!-- xml解析依赖-->
        <dependency>
            <groupId>org.apache.xmlgraphics</groupId>
            <artifactId>batik-codec</artifactId>
            <version>1.7</version>
        </dependency>
        <dependency>
            <groupId>org.apache.xmlgraphics</groupId>
            <artifactId>batik-css</artifactId>
            <version> 1.7</version>
        </dependency>
        <dependency>
            <groupId>org.apache.xmlgraphics</groupId>
            <artifactId>batik-svg-dom</artifactId>
            <version>1.7</version>
        </dependency>
        <dependency>
            <groupId>org.apache.xmlgraphics</groupId>
            <artifactId>batik-svggen</artifactId>
            <version>1.7</version>
        </dependency>
        <!-- xml解析依赖-->
        <!--activiti modeler 5.22 end-->

<!-- Corrections Common Log -->
        <dependency>
            <groupId>com.cmcc.ict</groupId>
            <artifactId>corrections-common-log</artifactId>
        </dependency>

        <!-- Corrections Common Security-->
        <dependency>
            <groupId>com.cmcc.ict</groupId>
            <artifactId>corrections-common-security</artifactId>
        </dependency>

        <!-- Corrections Common DataSource -->
        <dependency>
            <groupId>com.cmcc.ict</groupId>
            <artifactId>corrections-common-datasource</artifactId>
        </dependency>

        <!-- Corrections Common DataScope -->
        <dependency>
            <groupId>com.cmcc.ict</groupId>
            <artifactId>corrections-common-datascope</artifactId>
        </dependency>

        <!-- Corrections common feign -->
        <dependency>
            <groupId>com.cmcc.ict</groupId>
            <artifactId>corrections-common-feign</artifactId>
        </dependency>

<dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.6</version>
        </dependency>

<!-- SpringBoot集成thymeleaf模板 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

8. 由于前端用到了thymeleaf，需要添加thymeleaf依赖。
9. 解决好各种冲突依赖后，项目可以尝试启动了。