本文主要是介绍工作流Activiti初体验【一】，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
在这里记录一下我的Activiti历程：（以下示例不涉及真实业务，所有逻辑均建立在学习的基础上）
bpmn图
发起任务我设置了一个权限组user1，只要是这个权限的用户都可以发起任务
分发任务我设置了一个用户组，用户组中每个用户都可以处理这步流程，只要有一个人处理这步任务，分发的流程就算结束了
分发任务这一环节还有个判断，允许任务下发和不允许任务下发
任务分发完成则来到子流程，每个被分到任务的人需要执行任务，所以需要派生出多个实例。子流程里面用户集users包含着每一个user
子流程里面开始的事件需要接收用户参数生产每个实例
后面的步骤跟前面差不多，就不细说了
代码部分
配置文件xml
<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsd"><!-- 配置流程引擎配置对象 --><bean id="processEngineConfiguration"class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration"><property name="jdbcDriver" value="com.mysql.cj.jdbc.Driver" /><property name="jdbcUrl" value="jdbc:mysql://127.0.0.1:3306/activiti?characterEncoding=utf8&useSSL=false&nullCatalogMeansCurrent=true" /><property name="jdbcUsername" value="root" /><property name="jdbcPassword" value="MySQLadmin1!" /><!-- 建表策略：若没有工作流表则创建，若存在工作流表则更新 --><property name="databaseSchemaUpdate" value="true" /></bean><!-- 配置一个流程引擎工厂bean，用于创建流程引擎对象 --><bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean"><!-- 通过set方法注入流程引擎配置对象 --><property name="processEngineConfiguration" ref="processEngineConfiguration" /></bean>
</beans>ActivitiConfig.java
package com.avanty.activiti;import org.activiti.engine.*;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;@Configuration
public class ActivitiConfig {/*** 配合xml配置文件使用*/@Beanpublic ProcessEngine processEngine() {String resource = "activiti/activitiConfig.xml";String beanName = "processEngineConfiguration";ProcessEngineConfiguration conf = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource(resource, beanName);return conf.buildProcessEngine();}/*** @Bean可以用xml配置，也可以代码配置* @Bean public ProcessEngine processEngine() { //创建Activiti配置对象实例* ProcessEngineConfiguration configuration =* ProcessEngineConfiguration.createStandaloneInMemProcessEngineConfiguration();* configuration.setJdbcDriver("com.mysql.cj.jdbc.Driver");* configuration.setJdbcUrl("jdbc:mysql://127.0.0.1:3306/activiti?characterEncoding=utf8&useSSL=false&nullCatalogMeansCurrent=true");* configuration.setJdbcUsername("root");* configuration.setJdbcPassword("MySQLadmin1!"); //设置建表策略* configuration.setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_TRUE);* //得到引擎实例 return configuration.buildProcessEngine(); }*/@Beanpublic RepositoryService repositoryService(ProcessEngine processEngine) {return processEngine.getRepositoryService();}@Beanpublic RuntimeService runtimeService(ProcessEngine processEngine) {return processEngine.getRuntimeService();}@Beanpublic TaskService taskService(ProcessEngine processEngine) {return processEngine.getTaskService();}@Beanpublic HistoryService historyService(ProcessEngine processEngine) {return processEngine.getHistoryService();}@Beanpublic ManagementService managementService(ProcessEngine processEngine) {return processEngine.getManagementService();}@Beanpublic IdentityService identityService(ProcessEngine processEngine) {return processEngine.getIdentityService();}}用来测试的DeployActiviti.java
package com.avanty.activiti;import org.activiti.engine.ProcessEngine;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.TaskService;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.activiti.engine.task.TaskQuery;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.stereotype.Component;import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;@Component
public class DeployActiviti implements ApplicationRunner {/*** 流程部署相关表 `ACT_RE_DEPLOYMENT` `ACT_RE_MODEL` `ACT_GE_BYTEARRAY`* `ACT_GE_PROPERTY` `ACT_RE_PROCDEF`*//*** 流程运行相关表 `ACT_RU_EXECUTION` `ACT_RU_IDENTITYLINK` `ACT_RU_JOB` `ACT_RU_TASK`* `ACT_RU_VARIABLE`*//*** 流程历史相关表 `ACT_HI_IDENTITYLINK` `ACT_HI_VARINST` `ACT_HI_ACTINST`* `ACT_HI_TASKINST`*//*** TaskQuery taskQuery = taskService.createTaskQuery();* taskQuery.taskCandidateGroupIn(roleList);* taskQuery.taskCandidateOrAssigned(usrnames);* taskQuery.includeProcessVariables(); taskList = taskQuery.list();*/@AutowiredProcessEngine processEngine;@AutowiredRuntimeService runtimeService;@AutowiredTaskService taskService;@Overridepublic void run(ApplicationArguments args) {finish();}private void deployProcess() {RepositoryService service = processEngine.getRepositoryService();InputStream bpmn = this.getClass().getResourceAsStream("/activiti/Process.bpmn");Deployment deployment = service.createDeployment().name("任务流程").addInputStream("Process.bpmn", bpmn).deploy();System.out.println(deployment.getName());System.out.println(deployment.getId());}/*** 发起任务*/private void step1() {String processInstanceByKey = "Process";ProcessInstance processInstance = runtimeService.startProcessInstanceByKey(processInstanceByKey);System.out.println(processInstance.getId());}/*** 查看发起任务*/private void findStep1() {TaskQuery taskQuery = taskService.createTaskQuery();List<String> roleCodeList = new ArrayList<>();roleCodeList.add("user1");taskQuery.taskCandidateGroupIn(roleCodeList);taskQuery.includeProcessVariables();List<Task> tasks = taskQuery.list();for (Task task : tasks) {System.out.println(task.getId());System.out.println(task.getProcessInstanceId());System.out.println(task.getName());System.out.println(task.getAssignee());}}/*** 分发任务*/private void step2() {TaskQuery taskQuery = taskService.createTaskQuery();List<String> roleCodeList = new ArrayList<>();roleCodeList.add("user1");taskQuery.taskCandidateGroupIn(roleCodeList);taskQuery.includeProcessVariables();Task task = taskQuery.singleResult();Map<String, Object> variables = new HashMap<>();List<String> users = new ArrayList<>();users.add("Michael");users.add("Zhan");variables.put("users", users);taskService.complete(task.getId(), variables);System.out.println("finish");}/*** 查看分发任务*/private void findStep2() {String assignee = "Zhan";// String assignee = "Michael";List<Task> tasks1 = taskService.createTaskQuery().taskCandidateUser(assignee).list();for (Task task1 : tasks1) {System.out.println(task1.getId());System.out.println(task1.getName());}}/*** 子流程-执行任务*/private void step3() {TaskQuery taskQuery = taskService.createTaskQuery();taskQuery.taskCandidateOrAssigned("Michael");taskQuery.includeProcessVariables();Task task = taskQuery.singleResult();System.out.println(task.getId());Map<String, Object> variables = new HashMap<>();List<String> users = new ArrayList<>();users.add("admin");users.add("root");variables.put("users", users);variables.put("isPass", 1);taskService.complete(task.getId(), variables);System.out.println("finish");}/*** 子流程-查看执行任务*/private void findStep3() {String assignee = "admin";
// String assignee = "root";List<Task> tasks = taskService.createTaskQuery().taskCandidateOrAssigned(assignee).list();for (Task task : tasks) {System.out.println(task.getId());System.out.println(task.getProcessInstanceId());System.out.println(task.getName());}}/*** 子流程-验收任务*/private void step4() {String assignee = "admin";Task task = taskService.createTaskQuery().taskCandidateOrAssigned(assignee).singleResult();System.out.println(task.getId());Map<String, Object> variables = new HashMap<>();List<String> users = new ArrayList<>();if (assignee.equals("root")) {users.add("administrator");users.add("su");}else if(assignee.equals("admin")) {users.add("alex");users.add("sudo");}variables.put("users", users);taskService.complete(task.getId(), variables);System.out.println("finish");}/*** 子流程-查看验收任务*/private void findStep4() {
// String assignee = "administrator";
// String assignee = "su";
// String assignee = "alex";String assignee = "sudo";List<Task> tasks = taskService.createTaskQuery().taskCandidateOrAssigned(assignee).list();for (Task task : tasks) {System.out.println(task.getId());System.out.println(task.getProcessInstanceId());System.out.println(task.getName());}}/*** 子流程-完成*/private void finish() {String assignee = "alex";Task task = taskService.createTaskQuery().taskCandidateOrAssigned(assignee).singleResult();Map<String, Object> variables = new HashMap<>();variables.put("isPass", 1);taskService.complete(task.getId(), variables);System.out.println("finish");}}最后，附上项目地址 Activiti-Test
项目是用Eclipse写的，不用IDEA的原因是Eclipse的Activiti插件比IDEA的好，有自动对齐功能，强迫症的福音呐！
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