由於概念性的東西這裡就不在做更多的介紹了，下面直接對activiti的流程進行介紹，為了方便大家的更快的熟悉流程，在此處我就直接上程式碼介紹，本人技術水平有限，有不正確之處還請大家指出，多謝大家的海涵，在此謝過了！！！

配置資料庫連線 activiti-cfg.xml

       此配置可以根據具體的專案情況進行配置

<?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:context="http://www.springframework.org/schema/context"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:aop="http://www.springframework.org/schema/aop" 
    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">
  	
  	 <bean id = "processEngineConfiguration" 
  		class = "org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
  	 	<property name="jdbcDriver" value="com.mysql.jdbc.Driver"></property>
  	 	<property name="jdbcUrl" value="jdbc:mysql://127.0.0.1:3306/activiti?useUnicode=true&amp;characterEncoding=utf-8"></property>
  	 	<property name="jdbcUsername" value="root"></property>
  	 	<property name="jdbcPassword" value="root"></property>
  	  	<property name="databaseSchemaUpdate" value="false"></property>	
  	 </bean>
</beans>

下面中的步驟都是在一個類下面進行的，利用Junit4進行測試 這裡就以請假流程為例進行介紹

初始化引擎

private ProcessEngine processEngine = null;

@Before
public void initProcessEngine(){
	processEngine = ProcessEngines.getDefaultProcessEngine();
}

流程定義好後，需要進行部署

流程的定義需要在eclipse中定義好（這裡以eclipse為例），定義好之後會生成兩個檔案

@Test
public void testLeaveProcessDeploy(){
	//建立部署構建器
	/*RepositoryService repositoryService = processEngine.getRepositoryService();
	DeploymentBuilder deploymentBuilder = repositoryService.createDeployment();
	//新增資源
	deploymentBuilder.addClasspathResource("diagram/leave.bpmn");
	deploymentBuilder.addClasspathResource("diagram/leave.png");
	deploymentBuilder.name("請假流程");
	//進行部署
	Deployment deployment = deploymentBuilder.deploy();*/
	
	//avtiviti支援鏈式程式設計
	Deployment deployment = processEngine.getRepositoryService()
											.createDeployment()
											.addClasspathResource("diagram/leave.bpmn")
											.addClasspathResource("diagram/leave.png")
											.name("請假流程")
											.deploy();
	
	
	System.out.println("流程部署ID："+deployment.getId());
	System.out.println("流程部署名稱："+deployment.getName());
}

流程啟動

@Test
public void testStartLeaveProcess(){
	String processDefinitionKey = "leave";
	ProcessInstance processInstance = processEngine.getRuntimeService()
										.startProcessInstanceByKey(processDefinitionKey);
	System.out.println("流程部署的ID："+processInstance.getDeploymentId());
	System.out.println("流程定義的ID："+processInstance.getProcessDefinitionId());
	System.out.println("流程例項的ID："+processInstance.getProcessInstanceId());
}

流程的處理

@Test
public void testQueryTask(){
	String assignee = "李四";
	String processInstanceId = "7501";
	List<Task> listTask = processEngine.getTaskService()
							.createTaskQuery()
							.taskAssignee(assignee)
							.processInstanceId(processInstanceId)
							.list();
	if (listTask != null && listTask.size() > 0) {
		for (Task task : listTask) {
			System.out.println("流程定義的ID："+task.getProcessDefinitionId());
			System.out.println("流程例項的ID："+task.getProcessInstanceId());
			System.out.println("執行物件ID："+task.getExecutionId());
			System.out.println("任務ID："+task.getId());
			System.out.println("任務名稱："+task.getName());
			System.out.println("任務建立的時間："+task.getCreateTime());
			System.out.println("================================");
		}
	}
}

流程處理過程

@Test
public void testCompleteTask(){
	String taskId = "27502";
	processEngine.getTaskService()
					.complete(taskId);
	System.out.println("任務完成");
}