1.導入依賴

    <!-- activiti工作流 -->
    <dependency>  
        <groupId>org.activiti</groupId>  
        <artifactId>activiti-engine</artifactId>  
        <version>5.14</version>  
    </dependency>
    <dependency>  
        <groupId>org.activiti</
 
groupId>  
        <artifactId>activiti-spring</artifactId>  
        <version>5.14</version>  
    </dependency> 

2.配置xml

　　a.新建spring-activiti.xml

<?xml version="1.0" encoding="UTF-8"?>  
<beans xmlns="http://www.springframework.org/schema/beans"  
       xmlns:xsi
 
="http://www.w3.org/2001/XMLSchema-instance"  
       xmlns:p="http://www.springframework.org/schema/p"  
       xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"  
       xmlns:aop="http://www.springframework.org/schema/aop" xmlns:util="http://www.springframework.org/schema/util"
 
  
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd  
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd  
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd  
       http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">  
  
    <bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">  
        <property name="activityFontName" value="微軟雅黑"></property>  
  
          <!-- 引入druid數據源 --> 
        <property name="dataSource" ref="dataSource"></property>  
        <!-- 引入spring事務管理 --> 
        <property name="transactionManager" ref="txManager"></property>  
        <!-- 建表策略 -->  
        <property name="databaseSchemaUpdate" value="true"></property>  
        <!-- 歷史控制級別 -->  
        <property name="history" value="full"></property>  
        
        <!-- 自動部署 -->
        <property name="deploymentResources">
            <list>
                <value>classpath*:MyProcess.bpmn</value>
            </list>
        </property>
    </bean>  
  
    <bean id="processEngineFactoryBean" class="org.activiti.spring.ProcessEngineFactoryBean">  
        <property name="processEngineConfiguration" ref="processEngineConfiguration"></property>  
    </bean>  
  
    <bean id="repositoryService" factory-bean="processEngineFactoryBean" factory-method="getRepositoryService"></bean>  
    <bean id="runtimeService" factory-bean="processEngineFactoryBean" factory-method="getRuntimeService"></bean>  
    <bean id="taskService" factory-bean="processEngineFactoryBean" factory-method="getTaskService"></bean>  
    <bean id="historyService" factory-bean="processEngineFactoryBean" factory-method="getHistoryService"></bean>  
    <bean id="formService" factory-bean="processEngineFactoryBean" factory-method="getFormService"></bean>  
    <bean id="identityService" factory-bean="processEngineFactoryBean" factory-method="getIdentityService"></bean>  
    <bean id="managementService" factory-bean="processEngineFactoryBean" factory-method="getManagementService"></bean>  
  
</beans>

　　註意：其中 dataSource 和 txManager 為 spring-mybatis.xml 中配置的 “數據源(數據庫連接池)” 和 “事務管理”，所以不能在web.xml中引入，而應在spring-mybatis.xml中引入

　　b.在 spring-mybatis.xml 引入 spring-activiti.xml 配置

    <!-- 導入activiti工作流配置 -->
    <import resource="spring-activiti.xml"/>

3.繪制流程圖

　　a.eclipse 中安裝插件： help —> Install New Software —> Add

　　　　　　　　　　　　Name：activiti

　　　　　　　　　　　　Location：http://activiti.org/designer/update/

　　b.新建流程圖：新建 MyProcess.bpmn

4.使用

　　a.在Service中使用

@Service
public class ProcessService {
    
    public final static String PROCESS_ID = "myProcess";

    //流程儲存服務組件
    @Resource
    RepositoryService repositoryService;
    
    //運行時服務組件
    @Resource
    RuntimeService runtimeService;
    
    //流程中的任務TASK組件
    @Resource
    TaskService taskService;
    
    //部署流程（若xml已配置自動部署，則不需要此方法）
    public void deployProcess(){
        // 部署流程，只要是符合BPMN2規範的XML文件，理論上都可以被ACTIVITI部署
        repositoryService.createDeployment().addClasspathResource("MyProcess.bpmn").deploy();
    }
    
    //啟動流程
    public void startProcess(){
        // 開啟流程，參數是流程的ID
        runtimeService.startProcessInstanceByKey(PROCESS_ID);
    }
    
    //根據Assignee查詢task
    public List<Task> findTaskByAssignee(String assignee){
        List<Task> taskList = taskService.createTaskQuery().
                taskAssignee(assignee).    //根據辦理人查詢
                orderByTaskCreateTime().asc().    //根據創建時間升序排列
                list();    //返回列表
        
        for(Task task : taskList){
            System.out.println("任務ID:"+task.getId());  
            System.out.println("任務名稱:"+task.getName());  
            System.out.println("任務的創建時間:"+task.getCreateTime());  
            System.out.println("任務的辦理人:"+task.getAssignee());  
            System.out.println("流程實例ID："+task.getProcessInstanceId());  
            System.out.println("執行對象ID:"+task.getExecutionId());  
            System.out.println("流程定義ID:"+task.getProcessDefinitionId());  
            System.out.println("========================================="); 
        }
        
        return taskList;
    }
    
    
    //完成任務
    //variables 為流程變量，對應bpmn 中 Condition 設置的 ${message==‘不重要‘}
    public void completeProcess(String taskId, Map<String, Object> variables){
        taskService.complete(taskId, variables);
        System.out.println("完成任務ID："+taskId);
    }
}

　　b.在Controller中測試

    //提交流程
    @RequestMapping("submitProcess")
    public @ResponseBody String submitProcess(HttpServletRequest request, HttpServletResponse response){
        processService.startProcess();
        return "提交流程成功";
    }
    
    //部長審批
    @RequestMapping("departmentProcess")
    public @ResponseBody String departmentProcess(HttpServletRequest request, HttpServletResponse response){
        List<Task> taskIdList = processService.findTaskByAssignee("department");
        for(Task task : taskIdList){
            String taskId = task.getId();
            processService.completeProcess(taskId, null);
        }
        return "部長審批成功";
    }
    
    //副總審批
    @RequestMapping("managerProcess")
    public @ResponseBody String managerProcess(HttpServletRequest request, HttpServletResponse response){
        List<Task> taskIdList = processService.findTaskByAssignee("manager");
        for(Task task : taskIdList){
            String taskId = task.getId();
            processService.completeProcess(taskId, null);
        }
        return "副總審批成功";
    }

工作流——activiti