springboot 整合 activiti流程引擎 入门demo

activiti流程引擎开发指南

安装插件

参考链接：https://blog.csdn.net/x15011238662/article/details/86488754

解决乱码问题

1.idea安装目录bin目录下如下图所示两个文件 ：

idea64.exe.vmoptions/idea.exe.vmoptions 添加 -Dfile.encoding=UTF-8

2.修改如下目录文件

C:\Users\Administrator\.IntelliJIdea2019.2\config\idea64.exe.vmoptions 添加 -Dfile.encoding=UTF-8

新建bpmn文件

元素列表

 

我们主要用到的元素为：开始节点、结束节点、UserTask、ExclusiveGateway

画图规则

1. 必须包含起始节点、结束节点，至少有一个UserTask节点，至少有一条完整的流程线路，额外的孤立节点，不会解析。
2. 互斥网关上一个节点必须是UserTask类型

 

集成actitivi

引入POM依赖

<dependency>     <groupId>org.activitigroupId>    <artifactId>activiti-spring-boot-starter-basicartifactId>     <version>6.0.0version> dependency>

启动文件排除

@SpringBootApplication(exclude = org.activiti.spring.boot.SecurityAutoConfiguration.class) public class RcApplication {     public static void main(String[] args) {         SpringApplication.run(RcApplication.class, args);     } }

添加配置类

package cn.cloudedu.rc.base.config; import org.activiti.engine.*; import org.activiti.spring.ProcessEngineFactoryBean; import org.activiti.spring.SpringProcessEngineConfiguration; import org.activiti.spring.boot.AbstractProcessEngineAutoConfiguration; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.core.io.Resource; import org.springframework.core.io.support.PathMatchingResourcePatternResolver; import org.springframework.transaction.PlatformTransactionManager; import javax.sql.DataSource; import java.io.IOException; /**  * activiti 配置类  * 初始化activiti，注入相关的bean供后续使用  * @author liubiao  * @date 2019.11.1  */ @Configuration public class ActivitiConfig extends AbstractProcessEngineAutoConfiguration {     private final DataSource dataSource;     private final PlatformTransactionManager platformTransactionManager;     @Autowired     public ActivitiConfig(             @Qualifier("dataSource") DataSource dataSource,             @Qualifier("transactionManager") PlatformTransactionManager platformTransactionManager) {         this.dataSource = dataSource;         this.platformTransactionManager = platformTransactionManager;     }     @Bean     public SpringProcessEngineConfiguration springProcessEngineConfiguration() {         SpringProcessEngineConfiguration spec = new SpringProcessEngineConfiguration();         spec.setDataSource(dataSource);         spec.setTransactionManager(platformTransactionManager);         spec.setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_TRUE);//DB_SCHEMA_UPDATE_FALSE         Resource[] resources = null;         // 启动自动部署流程         try {             resources = new PathMatchingResourcePatternResolver().getResources("classpath*:process/*.bpmn");         } catch (IOException e) {             e.printStackTrace();         }         spec.setDeploymentResources(resources);         return spec;     }     @Bean     public ProcessEngineFactoryBean processEngineFactory() {         ProcessEngineFactoryBean processEngineFactoryBean = new ProcessEngineFactoryBean();         processEngineFactoryBean.setProcessEngineConfiguration(springProcessEngineConfiguration());         return processEngineFactoryBean;     }     @Bean     public ProcessEngine processEngine() throws Exception {         return processEngineFactory().getObject();     }     @Bean     public RepositoryService repositoryService() throws Exception {         return processEngineFactory().getObject().getRepositoryService();     }     @Bean     public RuntimeService runtimeService() throws Exception {         return processEngineFactory().getObject().getRuntimeService();     }     @Bean     public TaskService taskService() throws Exception {         return processEngineFactory().getObject().getTaskService();     }     @Bean     public HistoryService historyService() throws Exception {         return processEngineFactory().getObject().getHistoryService();     } }

 

执行过程说明

 

流程部署

Deployment deployment = repositoryService.createDeployment().addInputStream(fileName,file.getInputStream()).deploy(); String deploymentId = deployment.getId(); //根据部署ID获取流程定义实例 ProcessDefinition processDefinition = processEngine.getRepositoryService()         .createProcessDefinitionQuery().deploymentId(deploymentId).singleResult(); String definitionId = processDefinition.getId();

 

流程启动

//根据部署流程ID启动流程 ProcessInstance processInstance = runtimeService.startProcessInstanceById(definitionId); String processInstanceId = processInstance.getProcessInstanceId();

 

流程流转

Task task = taskService.createTaskQuery().processInstanceId(procInstanceId).singleResult(); Map condition = new HashMap<>(); condition.put("result",params.get("condition")); taskService.complete(task.getId(),condition);

查看流程状态

//获取当前节点 Task task = taskService.createTaskQuery().processInstanceId(processInstanceId).singleResult(); BpmnModel bpmnModel = processEngine.getRepositoryService().getBpmnModel(task.getProcessDefinitionId()); FlowNode flowNode = (FlowNode) bpmnModel.getFlowElement(activityId); flowNode.getName(); flowNode.getId();   //获取该流程组件的之后/之前的组件信息 List sequenceFlowListOutGoing = flowNode.getOutgoingFlows(); //sequenceFlowListOutGoing数量可能大于1,可以自己做判断,此处只取第一个 FlowElement flowElement = sequenceFlowListOutGoing.get(0).getTargetFlowElement(); if(flowElement instanceof ExclusiveGateway){     oprList.clear();     ExclusiveGateway gateway = (ExclusiveGateway) flowElement;     List list = gateway.getOutgoingFlows();     for(SequenceFlow flow:list){         flow.getName();         String condition = flow.getConditionExpression();     } }