《Activiti /Flowable 深入BPM工作流》---API 方式进行流程部署

深藏阁楼爱情的钟 2023-05-22 12:26 1阅读 0赞

# **《Activiti /Flowable 深入BPM工作流》---** **API** **方式进行流程部署** #

# **一. 问题** #

### **     什么是流程定义的部署?--怎么用 API 方式进行部署?** ###

# **二. 详情** #

将线下定义的流程部署到 activiti数据库中，这就是流程定义部署，通过调用 activiti的 api将流

程定义的 bpmn 和 png 两个文件一个一个添加部署到 activiti 中，也可以将两个文件打成 zip 包进行

部署。

**通过接口方式进行部署:**

/**
         * 通过接口进行 流程定义的部署
         */
        @Test
        public void deployProcess1() {
            //获取 repositoryService
    
            // (1)链接配置文件
            ProcessEngineConfiguration configuration = ProcessEngineConfiguration
                    .createProcessEngineConfigurationFromResource("activiti.cfg.xml");
    
    
            // (2)创建引擎
            ProcessEngine processEngine = configuration.buildProcessEngine();
    
            RepositoryService repositoryService = processEngine.getRepositoryService();
    
            //bpmn 输入流
            InputStream inputStream_bpmn = this.getClass()
                    .getClassLoader()
                    .getResourceAsStream("studentHoliday.bpmn");
    
            // 图片输入流
            InputStream inputStream_png = this
                    .getClass()
                    .getClassLoader()
                    .getResourceAsStream("studentHoliday.png");
    
            // 流程部署对象
            Deployment deployment = repositoryService.createDeployment()
                    .addInputStream("studentHoliday.bpmn", inputStream_bpmn)
                    .addInputStream("studentHoliday.png", inputStream_png)
                    .deploy();
    
            System.out.println("流程部署Id" + deployment.getId());
            System.out.println("流程部署名称:" + deployment.getName());
        }

部署过程出现异常如下:

org.activiti.engine.ActivitiException: couldn't check if tables are already present using metadata: 
    ### Error getting a new connection.  Cause: org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Communications link failure
    
    The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.)
    ### Cause: org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Communications link failure

**确定数据连接是否成功, 如果是连接本地的数据库, 去表启动mysql 服务成功**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjc3NTY_size_16_color_FFFFFF_t_70][]

**mysql 服务启动成功后, 部署成功截图如下:**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjc3NTY_size_16_color_FFFFFF_t_70 1][]

**查看库里信息 Act\_re\_procdef  成功如下:**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjc3NTY_size_16_color_FFFFFF_t_70 2][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjc3NTY_size_16_color_FFFFFF_t_70]: /images/20230521/c2e291d653994e07af4684d4651baed7.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjc3NTY_size_16_color_FFFFFF_t_70 1]: /images/20230521/76d2ff0837ac431e86954fc0fb6917a2.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNjc3NTY_size_16_color_FFFFFF_t_70 2]: /images/20230521/615fc879579b42f9979bc38f55804065.png