JBPM的简单总结

安装JBPM
- 引入Hibernate依赖包
- 引入JBPM依赖包
* bsh.jar
* jcr-1.0.jar
* jbpm-identity.jar
* jbpm-jpdl.jar
- 引入数据库驱动

定义相关配置文件
- Hibernate配置文件
* 提供hibernate配置文件（可以从config/目录下拷贝，并修改其中的数据库连接设置即可）

定义流程的文档

Xml代码

1. <process-definition name="文档测试流程">  
2.   
3.    <start-state name="开始">  
4.       <transition name="提交张三审批" to="张三审批"></transition>  
5.    </start-state>  
6.       
7.    <task-node name="张三审批">  
8.       <task name="审批1">  
9.         <assignment actor-id="张三"/>  
10.       </task>  
11.       <transition name="提交李四审批" to="李四审批"></transition>  
12.    </task-node>  
13.       
14.    <task-node name="李四审批">  
15.       <task name="审批2">  
16.         <assignment actor-id="李四"/>  
17.       </task>  
18.       <transition name="提交王五审批" to="王五审批"></transition>  
19.    </task-node>  
20.       
21.    <task-node name="王五审批">  
22.       <task name="审批3">  
23.         <assignment actor-id="王五"/>  
24.       </task>  
25.       <transition name="结束流程" to="结束"></transition>  
26.    </task-node>  
27.       
28.    <end-state name="结束"></end-state>  
29. </process-definition>  

<process-definition name="文档测试流程">

   <start-state name="开始">
      <transition name="提交张三审批" to="张三审批"></transition>
   </start-state>
   
   <task-node name="张三审批">
      <task name="审批1">
      	<assignment actor-id="张三"/>
      </task>
      <transition name="提交李四审批" to="李四审批"></transition>
   </task-node>
   
   <task-node name="李四审批">
      <task name="审批2">
      	<assignment actor-id="李四"/>
      </task>
      <transition name="提交王五审批" to="王五审批"></transition>
   </task-node>
   
   <task-node name="王五审批">
      <task name="审批3">
      	<assignment actor-id="王五"/>
      </task>
      <transition name="结束流程" to="结束"></transition>
   </task-node>
   
   <end-state name="结束"></end-state>
</process-definition>

POJO实体类

Java代码

1. public class Document {   
2.     private int id;   
3.     private String title;   
4.     private String content;   
5.     private String creator;   
6.     private Long processIntanceId;   
7. }  

public class Document {
	private int id;
	private String title;
	private String content;
	private String creator;
	private Long processIntanceId;
}

//在数据库中创建表格
JbpmConfiguration.getInstance().createSchema();

//部署流程

Java代码

1. JbpmConfiguration jbpmConfiguration = JbpmConfiguration.getInstance();    
2. JbpmContext context = jbpmConfiguration.createJbpmContext();   
3. try{   
4.     context.deployProcessDefinition(processDefinition);   
5. }finally{   
6.     //context对象需要关闭   
7.     context.close();   
8. }  

JbpmConfiguration jbpmConfiguration = JbpmConfiguration.getInstance(); 
JbpmContext context = jbpmConfiguration.createJbpmContext();
try{
    context.deployProcessDefinition(processDefinition);
}finally{
	//context对象需要关闭
	context.close();
}

//创建公文
//创建流程实例,将公文并与流程实例绑定

Java代码

1. JbpmContext context = jbpmConfiguration.createJbpmContext();   
2.         context.setSessionFactory(HibernateUtils.getSessionFactory());   
3.            
4.         //从数据库中加载ProcessDefinition对象   
5.         ProcessDefinition definition = context.getGraphSession().findLatestProcessDefinition("文档测试流程");   
6.            
7.         //从流程中创建一个流程实例   
8.         ProcessInstance processInstance = new ProcessInstance(definition);   
9.            
10.         //存储流程实例   
11.         context.save(processInstance);   
12.            
13.         //加载公文   
14.         Document doc = (Document)context.getSession().load(Document.class, 1);   
15.            
16.         //绑定流程实例到公文   
17.         doc.setProcessIntanceId(processInstance.getId());   
18.            
19.         //绑定公文到流程实例(ContextInstance相当于一个变量的容器)   
20.         processInstance.getContextInstance().createVariable("document", doc.getId());   
21.            
22.         context.close();  

JbpmContext context = jbpmConfiguration.createJbpmContext();
		context.setSessionFactory(HibernateUtils.getSessionFactory());
		
		//从数据库中加载ProcessDefinition对象
		ProcessDefinition definition = context.getGraphSession().findLatestProcessDefinition("文档测试流程");
		
		//从流程中创建一个流程实例
		ProcessInstance processInstance = new ProcessInstance(definition);
		
		//存储流程实例
		context.save(processInstance);
		
		//加载公文
		Document doc = (Document)context.getSession().load(Document.class, 1);
		
		//绑定流程实例到公文
		doc.setProcessIntanceId(processInstance.getId());
		
		//绑定公文到流程实例(ContextInstance相当于一个变量的容器)
		processInstance.getContextInstance().createVariable("document", doc.getId());
		
		context.close();

获得流程实例对象，并触发流程实例走向下一步

Java代码

1. JbpmContext context = jbpmConfiguration.createJbpmContext();   
2.         context.setSessionFactory(HibernateUtils.getSessionFactory());   
3.            
4.         Document doc = (Document)context.getSession().load(Document.class, 1);   
5.            
6.         ProcessInstance processInstance = context.getProcessInstance(doc.getProcessIntanceId());   
7.            
8.         //触发流程实例走向下一步   
9.         processInstance.getRootToken().signal();   
10.         //获得当前流程节点的名字   
11.         processInstance.getRootToken().getNode().getName()   
12.         context.close();  

JbpmContext context = jbpmConfiguration.createJbpmContext();
		context.setSessionFactory(HibernateUtils.getSessionFactory());
		
		Document doc = (Document)context.getSession().load(Document.class, 1);
		
		ProcessInstance processInstance = context.getProcessInstance(doc.getProcessIntanceId());
		
		//触发流程实例走向下一步
		processInstance.getRootToken().signal();
		//获得当前流程节点的名字
		processInstance.getRootToken().getNode().getName()
		context.close();

第一个节点对应的用户登录，应该能够查询到其当前的任务（有公文等待其审批）
* List tasks = context.getTaskMgmtSession().findTaskInstances("张三"); - 查找张三的任务列表
* 列表元素是TaskInstance实例
* 通过：taskInstance.getProcessInstance().getContextInstance().getVariable("document"); 可以找到其绑定的公文ID

Java代码

1. JbpmContext context = jbpmConfiguration.createJbpmContext();   
2.         context.setSessionFactory(HibernateUtils.getSessionFactory());   
3.   
4.         List tasks = context.getTaskMgmtSession().findTaskInstances("张三");   
5.         System.err.println("张三的文档有：");   
6.         for (Iterator iter = tasks.iterator(); iter.hasNext();) {   
7.             TaskInstance taskInstance = (TaskInstance) iter.next();   
8.             Integer docId = (Integer)taskInstance.getProcessInstance().getContextInstance().getVariable("document");   
9.             System.err.println(docId);   
10.         }   
11.            
12.         List tasks1 = context.getTaskMgmtSession().findTaskInstances("李四");   
13.         System.err.println("李四的文档有：");   
14.         for (Iterator iter = tasks1.iterator(); iter.hasNext();) {   
15.             TaskInstance taskInstance = (TaskInstance) iter.next();   
16.             Integer docId = (Integer)taskInstance.getProcessInstance().getContextInstance().getVariable("document");   
17.             System.err.println(docId);   
18.         }   
19.            
20.            
21.         List tasks2 = context.getTaskMgmtSession().findTaskInstances("王五");   
22.         System.err.println("王五的文档有：");   
23.         for (Iterator iter = tasks2.iterator(); iter.hasNext();) {   
24.             TaskInstance taskInstance = (TaskInstance) iter.next();   
25.             Integer docId = (Integer)taskInstance.getProcessInstance().getContextInstance().getVariable("document");   
26.             System.err.println(docId);   
27.         }   
28.            
29.            
30.         context.close();  

JbpmContext context = jbpmConfiguration.createJbpmContext();
		context.setSessionFactory(HibernateUtils.getSessionFactory());

		List tasks = context.getTaskMgmtSession().findTaskInstances("张三");
		System.err.println("张三的文档有：");
		for (Iterator iter = tasks.iterator(); iter.hasNext();) {
			TaskInstance taskInstance = (TaskInstance) iter.next();
			Integer docId = (Integer)taskInstance.getProcessInstance().getContextInstance().getVariable("document");
			System.err.println(docId);
		}
		
		List tasks1 = context.getTaskMgmtSession().findTaskInstances("李四");
		System.err.println("李四的文档有：");
		for (Iterator iter = tasks1.iterator(); iter.hasNext();) {
			TaskInstance taskInstance = (TaskInstance) iter.next();
			Integer docId = (Integer)taskInstance.getProcessInstance().getContextInstance().getVariable("document");
			System.err.println(docId);
		}
		
		
		List tasks2 = context.getTaskMgmtSession().findTaskInstances("王五");
		System.err.println("王五的文档有：");
		for (Iterator iter = tasks2.iterator(); iter.hasNext();) {
			TaskInstance taskInstance = (TaskInstance) iter.next();
			Integer docId = (Integer)taskInstance.getProcessInstance().getContextInstance().getVariable("document");
			System.err.println(docId);
		}
		
		
		context.close();

- 查找到当前的任务对应的公文之后，即可对其审批，并继续往下走
* taskInstance.end();

Java代码

1. JbpmContext context = jbpmConfiguration.createJbpmContext();   
2.         context.setSessionFactory(HibernateUtils.getSessionFactory());   
3.   
4.         List tasks = context.getTaskMgmtSession().findTaskInstances("张三");   
5. for (Iterator iter = tasks.iterator(); iter.hasNext();) {   
6.             TaskInstance taskInstance = (TaskInstance) iter.next();   
7.                
8.             //张三已经审批结束，继续提交，这将触发流程继续向下流动！   
9.             taskInstance.end();   
10.                
11.             Integer docId = (Integer)taskInstance.getProcessInstance().getContextInstance().getVariable("document");   
12.             System.err.println(docId+"已被审批完成");   
13.         }  

JbpmContext context = jbpmConfiguration.createJbpmContext();
		context.setSessionFactory(HibernateUtils.getSessionFactory());

		List tasks = context.getTaskMgmtSession().findTaskInstances("张三");
for (Iterator iter = tasks.iterator(); iter.hasNext();) {
			TaskInstance taskInstance = (TaskInstance) iter.next();
			
			//张三已经审批结束，继续提交，这将触发流程继续向下流动！
			taskInstance.end();
			
			Integer docId = (Integer)taskInstance.getProcessInstance().getContextInstance().getVariable("document");
			System.err.println(docId+"已被审批完成");
		}

- 如此，直到结束
* processInstance.hasEnded() - 如果流程已经到达终点，本调用将返回true

Java代码

1.   
2. //部署流程定义   
3. getJbpmContext().deployProcessDefinition(pdf);   
4.   
5. //删除流程定义   
6. List defs = getJbpmContext().getGraphSession().findAllProcessDefinitionVersions(workFlow.getName());   
7. for (Iterator iterator = defs.iterator(); iterator.hasNext();) {   
8.     ProcessDefinition pdf = (ProcessDefinition) iterator.next();   
9.     getJbpmContext().getGraphSession().deleteProcessDefinition(pdf);               
10. }   
11.   
12.   
13. //创建流程实例,先根据流程定义的名称获得流程定义对象，获得流程定义(GraphSession对象)   
14. GraphSession graphSession = context.getGraphSession();   
15. //findLatestProcessDefinition查找最新的流程定义，根据流程名称   
16. ProcessDefinition process = context.getGraphSession().findLatestProcessDefinition(workFlowName);   
17.   
18. ProcessInstance instance = new ProcessInstance(process);   
19. //绑定到文档，根据文档的ID   
20. instance.getContextInstance().createVariable("documnet", documentId);   
21. context.save(instance);   
22.   
23. //删除流程实例   
24. context.getGraphSession().deleteProcessInstance(processInstanceId);   
25.   
26. //获得一个流程实例，根据ID   
27. ProcessInstance processInstance = jbpmContext.getProcessInstance(doc.getProcessIntanceId());   
28.   
29. //获量(TaskInstance)流程实例的数组(根据用户名字)   
30. List task = context.getTaskMgmtSession().findTaskInstances(username);   
31. for (Iterator iterator = task.iterator(); iterator.hasNext();) {   
32.     TaskInstance taskInstance = (TaskInstance)iterator.next();   
33.     //是否   
34.     if(!taskInstance.isSignalling()){   
35.         continue;   
36.     }   
37.     //先获得ProcessInstance,再获得ContextInstance,再getVariable,(创建的时候是setVariable)   
38.     //得到的是文档的ID   
39.     Integer i = (Integer) taskInstance.getProcessInstance().getContextInstance().getVariable("document");   
40.     docIds.add(i);   
41. }   
42.   
43. //获得当前节点和起始节点   
44. String currentNodeName = instance.getRootToken().getNode().getName();   
45. String startNodeName = instance.getProcessDefinition().getStartState().getName();   
46.   
47. /**  
48.      * 搜索下一步的流向，即下一步都可以走哪些路径   
49.      * Parameters:  
50.      * username  
51.      * processInstanceId  
52.      * Returns:  
53.      * 流向的名称列表  
54.      */    
55.        
56.     public List searchNextTransitions(String username, long processInstanceId) {   
57.         JbpmContext context = getJbpmContext();   
58.         List transitions = new ArrayList();   
59.            
60.         ProcessInstance instance = context.getProcessInstance(processInstanceId);   
61.            
62.         String currentNodeName = instance.getRootToken().getNode().getName();   
63.         String startNodeName = instance.getProcessDefinition().getStartState().getName();   
64.            
65.         Collection nextSteps = null;   
66.         //如果当前节点和起始节点相等   
67.         if(currentNodeName.equals(startNodeName)){   
68.             //获得走向的Set集合   
69.             nextSteps = instance.getRootToken().getAvailableTransitions();   
70.         }else{   
71.             //如果当前节点不是起始节点,获得用户的TaskInstance   
72.             List list = context.getTaskMgmtSession().findTaskInstances(username);   
73.             for (Iterator iterator = list.iterator(); iterator.hasNext();) {   
74.                 TaskInstance taskInstance = (TaskInstance) iterator.next();   
75.                 //如果相等，获得走向的Set集合   
76.                 if(taskInstance.getProcessInstance().getId()==processInstanceId){   
77.                     nextSteps = taskInstance.getAvailableTransitions();   
78.                     break;   
79.                 }                  
80.             }              
81.         }   
82.         //只获得名字   
83.         for (Iterator iterator = nextSteps.iterator(); iterator.hasNext();) {   
84.             Transition transition = (Transition) iterator.next();   
85.             transitions.add(transition.getName());   
86.         }          
87.         return transitions;   
88.     }   
89.   
90. //流向下一步   
91.     public String flowToNextStep(String username, long processInstanceId,   
92.             String transitionName) {   
93.         JbpmContext jbpmContext = getJbpmContext();   
94.         String status = null;   
95.         ProcessInstance instance = jbpmContext.getProcessInstance(processInstanceId);   
96.         String currentName = instance.getRootToken().getNode().getName();   
97.         String startName = instance.getProcessDefinition().getStartState().getName();   
98.         if(currentName.equals(startName)){   
99.             //起始节点,流向指定的transitionName   
100.             instance.getRootToken().signal(transitionName);   
101.         }else{   
102.             List task = jbpmContext.getTaskMgmtSession().findTaskInstances(username);   
103.             for (Iterator iterator = task.iterator(); iterator.hasNext();) {   
104.                 TaskInstance taskInstance = (TaskInstance) iterator.next();   
105.                 if(taskInstance.getProcessInstance().getId()==processInstanceId){   
106.                     //非起始节点,流向指定的transitionName   
107.                     taskInstance.end(transitionName);   
108.                     break;   
109.                 }   
110.             }   
111.         }   
112.         //获得当前的Token   
113.         status = instance.getRootToken().getName();   
114.         if(instance.hasEnded()){   
115.             status = Document.STATUS_END;   
116.         }   
117.         return status;   
118.     }  

//部署流程定义
getJbpmContext().deployProcessDefinition(pdf);

//删除流程定义
List defs = getJbpmContext().getGraphSession().findAllProcessDefinitionVersions(workFlow.getName());
for (Iterator iterator = defs.iterator(); iterator.hasNext();) {
	ProcessDefinition pdf = (ProcessDefinition) iterator.next();
	getJbpmContext().getGraphSession().deleteProcessDefinition(pdf);			
}


//创建流程实例,先根据流程定义的名称获得流程定义对象，获得流程定义(GraphSession对象)
GraphSession graphSession = context.getGraphSession();
//findLatestProcessDefinition查找最新的流程定义，根据流程名称
ProcessDefinition process = context.getGraphSession().findLatestProcessDefinition(workFlowName);

ProcessInstance instance = new ProcessInstance(process);
//绑定到文档，根据文档的ID
instance.getContextInstance().createVariable("documnet", documentId);
context.save(instance);

//删除流程实例
context.getGraphSession().deleteProcessInstance(processInstanceId);

//获得一个流程实例，根据ID
ProcessInstance processInstance = jbpmContext.getProcessInstance(doc.getProcessIntanceId());

//获量(TaskInstance)流程实例的数组(根据用户名字)
List task = context.getTaskMgmtSession().findTaskInstances(username);
for (Iterator iterator = task.iterator(); iterator.hasNext();) {
	TaskInstance taskInstance = (TaskInstance)iterator.next();
	//是否
	if(!taskInstance.isSignalling()){
		continue;
	}
	//先获得ProcessInstance,再获得ContextInstance,再getVariable,(创建的时候是setVariable)
	//得到的是文档的ID
	Integer i = (Integer) taskInstance.getProcessInstance().getContextInstance().getVariable("document");
	docIds.add(i);
}

//获得当前节点和起始节点
String currentNodeName = instance.getRootToken().getNode().getName();
String startNodeName = instance.getProcessDefinition().getStartState().getName();

/**
	 * 搜索下一步的流向，即下一步都可以走哪些路径 
	 * Parameters:
	 * username
	 * processInstanceId
	 * Returns:
	 * 流向的名称列表
	 */	
	
	public List searchNextTransitions(String username, long processInstanceId) {
		JbpmContext context = getJbpmContext();
		List transitions = new ArrayList();
		
		ProcessInstance instance = context.getProcessInstance(processInstanceId);
		
		String currentNodeName = instance.getRootToken().getNode().getName();
		String startNodeName = instance.getProcessDefinition().getStartState().getName();
		
		Collection nextSteps = null;
		//如果当前节点和起始节点相等
		if(currentNodeName.equals(startNodeName)){
			//获得走向的Set集合
			nextSteps = instance.getRootToken().getAvailableTransitions();
		}else{
			//如果当前节点不是起始节点,获得用户的TaskInstance
			List list = context.getTaskMgmtSession().findTaskInstances(username);
			for (Iterator iterator = list.iterator(); iterator.hasNext();) {
				TaskInstance taskInstance = (TaskInstance) iterator.next();
				//如果相等，获得走向的Set集合
				if(taskInstance.getProcessInstance().getId()==processInstanceId){
					nextSteps = taskInstance.getAvailableTransitions();
					break;
				}				
			}			
		}
		//只获得名字
		for (Iterator iterator = nextSteps.iterator(); iterator.hasNext();) {
			Transition transition = (Transition) iterator.next();
			transitions.add(transition.getName());
		}		
		return transitions;
	}

//流向下一步
	public String flowToNextStep(String username, long processInstanceId,
			String transitionName) {
		JbpmContext jbpmContext = getJbpmContext();
		String status = null;
		ProcessInstance instance = jbpmContext.getProcessInstance(processInstanceId);
		String currentName = instance.getRootToken().getNode().getName();
		String startName = instance.getProcessDefinition().getStartState().getName();
		if(currentName.equals(startName)){
			//起始节点,流向指定的transitionName
			instance.getRootToken().signal(transitionName);
		}else{
			List task = jbpmContext.getTaskMgmtSession().findTaskInstances(username);
			for (Iterator iterator = task.iterator(); iterator.hasNext();) {
				TaskInstance taskInstance = (TaskInstance) iterator.next();
				if(taskInstance.getProcessInstance().getId()==processInstanceId){
					//非起始节点,流向指定的transitionName
					taskInstance.end(transitionName);
					break;
				}
			}
		}
		//获得当前的Token
		status = instance.getRootToken().getName();
		if(instance.hasEnded()){
			status = Document.STATUS_END;
		}
		return status;
	}