JBPM学习（二）--测试模块代码

偏执的太偏执、 2022-04-10 13:23 187阅读 0赞

此篇接上篇  [JBPM学习（一）--与SSH整合][JBPM_--_SSH]

http://blog.csdn.net/lushuaiyin/article/details/8599253

SSH与JBPM整合好以后我们必须写测试代码才能确认到底整合成功与否。

在jbpm-4.4\\examples\\src\\org\\jbpm\\examples路径下我们可以找到官方自带的Demo。

在不知JBPM如何使用前，最好看看Demo的代码。

我挑了这个目录下java这个文件夹里面的代码。把它拷贝到Eclipse中看看。

process.jpdl.xml是流程定义文件，这个打开后能看到图形，也可以看源码。

![1361457094_2823.jpg][]

3个bean和一个测试类。我们要把这些代码整合到SSH中去，就把每个方法在Action重新定义一遍就可以了。

搞定之后，我们再照着自己再定义一个流程。

在Eclipse中新建一个jBPM 4 Process Definition文件。

然后就可以用Eclipse的插件来画流程图了。

![1361457088_6474.jpg][]

WorkFlowTestAction

package org.jbpm.action;
    
    import java.util.List;
    
    import org.base.MyBaseAction;
    import org.jbpm.api.ExecutionService;
    import org.jbpm.api.ProcessDefinition;
    import org.jbpm.api.ProcessEngine;
    import org.jbpm.api.ProcessInstance;
    import org.jbpm.api.RepositoryService;
    import org.jbpm.api.TaskService;
    import org.jbpm.api.task.Task;
    
    public class WorkFlowTestAction  extends MyBaseAction {
    	private static final long serialVersionUID = 1L;
    	
    	public String execute() throws Exception{
    		
    		return SUCCESS;
    	}
    	
    	//发布流程
    	public String setUp() throws Exception {
    		RepositoryService repositoryService=getProcessEngine().getRepositoryService();
    	    
    		String pro="1";
    		if(this.getHttpServletRequest().getParameter("pro")!=null){
    			pro=(String)this.getHttpServletRequest().getParameter("pro");
    			if(!pro.trim().equals("")){
    				if(pro.equals("2")){
    					
    			    	deploymentId = repositoryService.createDeployment()
    			        .addResourceFromClasspath("org/jbpm/config/process.jpdl.xml")//流程定义
    			        .addResourceFromClasspath("org/jbpm/config/process.png")//流程定义图，这个可选
    			        .deploy();
    			    	System.out.println("发布流程2,ID:"+deploymentId);
    				}else{
    					
    					deploymentId = repositoryService.createDeployment()
    			        .addResourceFromClasspath("org/jbpm/config/myprocess.jpdl.xml")//流程定义
    			        .addResourceFromClasspath("org/jbpm/config/myprocess.png")//流程定义图
    			        .deploy();
    					System.out.println("发布流程1,ID:"+deploymentId);
    				} 
    				
    			}
    		}
    	    
    	    return NONE;
    	}
    	
    	//查询流程
    	public String showAll() throws Exception {
    		RepositoryService repositoryService=getProcessEngine().getRepositoryService();
    		
    		String proname="";
    		if(this.getHttpServletRequest().getParameter("proname")!=null){
    			proname=(String)this.getHttpServletRequest().getParameter("proname");
    			if(proname.trim().equals("")){
    				System.out.println("proname参数为空，查询所有流程");
    				List<ProcessDefinition> processDefinitions = repositoryService.createProcessDefinitionQuery().list();
    			    if(processDefinitions!=null){
    			    	this.setValueToRequest("processDefinitions", processDefinitions);
    			    }
    			}else{
    				System.out.println("proname参数"+proname);
    				List<ProcessDefinition> processDefinitions = repositoryService
    				.createProcessDefinitionQuery().processDefinitionName(proname).list();
    				
    			    if(processDefinitions!=null){
    			    	this.setValueToRequest("processDefinitions", processDefinitions);
    			    }
    			}
    			
    		}
    		
    	    return SUCCESS;
    	}
    	
    	//删除流程
    	public String tearDown() throws Exception {
    		RepositoryService repositoryService=getProcessEngine().getRepositoryService();
    		String delId="";
    		if(this.getHttpServletRequest().getParameter("delId")!=null){
    			delId=(String)this.getHttpServletRequest().getParameter("delId");
    			
    			if(!delId.trim().equals("")){
    				repositoryService.deleteDeploymentCascade(delId);
    			    System.out.println("删除流程,ID:"+delId);
    			}else{
    				System.out.println("流程,ID为空，删除失败");
    			}
    		}else{
    			System.out.println("流程,ID为空，删除失败");
    		}
    		
    	    
    	    return NONE;
    	}
    	
    	
    	
    	public ProcessEngine processEngine;
    
    	public ProcessEngine getProcessEngine() {
    		return processEngine;
    	}
    
    	public void setProcessEngine(ProcessEngine processEngine) {
    		this.processEngine = processEngine;
    	}
    	
    	public String deploymentId;
    
    	public String getDeploymentId() {
    		return deploymentId;
    	}
    
    	public void setDeploymentId(String deploymentId) {
    		this.deploymentId = deploymentId;
    	}
    }

struts\_jbpm\_test.xml

<?xml version="1.0" encoding="UTF-8" ?>
    <!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
    <struts>
    	<package name="jbpmtest" extends="base-struts-default" namespace="/jbpmtest">
    		<action name="setUp" class="org.jbpm.action.WorkFlowTestAction" method="setUp">
    		</action>
    		<action name="tearDown" class="org.jbpm.action.WorkFlowTestAction" method="tearDown">
    		</action>
    		<action name="showAll" class="org.jbpm.action.WorkFlowTestAction" method="showAll">
    		   <result name="success">/jsp/jbpmtest/listProcess.jsp</result>
    		</action>
    	</package>
    </struts>

listProcess.jsp

<%@ page contentType="text/html; charset=UTF-8"%>
    <%@page import="java.util.*"%>
    <%@page import="org.jbpm.api.ProcessDefinition"%>
    <% 
    String path = request.getContextPath();
    %>
    <% 
    List list=null;
    if(request.getAttribute("processDefinitions")!=null){
    	list=(List)request.getAttribute("processDefinitions");
    }
    %>
    <html>
    <head>
    	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    	<title></title>
    	<script src="<%=path%>/script/jquery-1.7.1.min.js" type="text/javascript"></script>	
    </head>
    <body style="overflow: scroll; overflow: auto;">
    
    <input type="hidden" name="path" id="path" value='<%=path%>' ></input>
    
          <table width="500px"  border="1" align="center">
            <tr>
    			 <td align="center">流程名字:<input type="text"  id="proname" value='' ></input></td>
    		</tr>
    		<tr>
    			 <td align="center"><h1><a href="javascript:void(0)" οnclick="query()">查询</a></h1></td>
    		</tr>
    		
    		<tr>
    			 <td align="center"><input type="button" οnclick="setUpProcess('1')"  value='发布流程1--myprocess' ></input></td>
    		</tr>
    		<tr>
    			 <td align="center"><input type="button" οnclick="setUpProcess('2')"  value='发布流程2--java' ></input></td>
    		</tr>
    		
    	</table>
    	
    	 <table width="500px"  border="1" align="center">
            <tr>
    			 <th align="center">流程id</th><th align="center">流程名字</th><th align="center">操作</th>
    		</tr>
    		<% 
    		if(list!=null){
    			for(int i=0;i<list.size();i++){
    				ProcessDefinition process=(ProcessDefinition)list.get(i);
    				if(process!=null){
    					String proid="";
    					String proname="";
    					if(process.getDeploymentId()!=null){
    						proid=process.getDeploymentId();
    					}
    					if(process.getName()!=null){
    						proname=process.getName();
    					}
    		%>			
    				<tr>
    					 <td><%=proid%></td><td><%=proname%></td><td><input type="button" οnclick="delprocess('<%=proid%>')"  value='删除' ></input></td>
    				</tr>
    		<%	
    				}
    			}
    		}
    		%>
    		
    	</table>
    </body>
    </html> 
    <script type="text/javascript">	
    
    function query(){
    	var proname=document.getElementById("proname").value;
    	var urlpath="<%=path%>/jbpmtest/showAll.action?proname="+proname+"&randomStr="+Math.random();
    	window.location.href=urlpath;
    	
    }
    
    
    function delprocess(id){
    	var urlpath="<%=path%>"+"/jbpmtest/tearDown.action";
    	$.ajax({
    		   type:"POST",
    		   url:urlpath,
    		   data: "delId="+id+"&randomStr="+Math.random(),
    		   success: function(msg){
    			   alert("成功删除！");
    		     window.location.reload();
    		   }
    		});
    }
    
    
    function setUpProcess(pro){
    	
    	var urlpath="<%=path%>"+"/jbpmtest/setUp.action";
    	$.ajax({
    		   type:"POST",
    		   url:urlpath,
    		   data: "pro="+pro+"&randomStr="+Math.random(),
    		   success: function(msg){
    			   alert("成功发布！");
    		     window.location.reload();
    		   }
    		});
    }
    </script>

如下是整合后的package结构图：

![1361457397_3651.jpg][]

在启动服务器时没有报错，但是在访问jsp页面时，却报错了：

严重: Servlet.service() for servlet jsp threw exception  
java.lang.LinkageError: loader constraint violation: when resolving interface method  
  
  
"javax.servlet.jsp.JspApplicationContext.getExpressionFactory()Ljavax/el/ExpressionFactory;" the   
class loader (instance of  
  
  
org/apache/jasper/servlet/JasperLoader) of the current class, org/apache/jsp/index\_jsp, and the   
class loader (instance of  
  
  
org/apache/catalina/loader/StandardClassLoader) for resolved class,   
javax/servlet/jsp/JspApplicationContext, have different  
  
  
Class objects for the type javax/el/ExpressionFactory used in the signature  
 at org.apache.jsp.index\_jsp.\_jspInit(index\_jsp.java:24)  
 at org.apache.jasper.runtime.HttpJspBase.init(HttpJspBase.java:52)

从网上找到了原因：

原因：  
  
jbpm4 在tomcat6 下面ssh2 这个错误！  
原因是项目中WEB-INF\\lib中的三个jar包(juel.jar, juel-engine.jar, juel-impl.jar)和tomcat6下lib中jar  
包(el-api.jar)冲突  
  
解决方法：

方法一：换成tomcat5.5 一点问题也没有了  
  
方法二：将juel.jar, juel-engine.jar, juel-impl.jar这三个包复制到tomcat6下lib中，并删除原来的  
el-api.jar，切记要把WEB-INF\\lib中的juel.jar, juel-engine.jar, juel-impl.jar删除。不然还是要冲突。  
  
\------------------------------------------------------------------------------------------------------------------------------------------------------------

继续。。。。

访问http://localhost:8080/frame/jbpmtest/showAll.action

分别请求action中的查询，发布，删除方法都正常。

好，到现在算是整合成功了。

看看效果吧：

![1361457789_2639.jpg][]

[JBPM_--_SSH]: http://blog.csdn.net/lushuaiyin/article/details/8599253
[1361457094_2823.jpg]: https://img-my.csdn.net/uploads/201302/21/1361457094_2823.jpg
[1361457088_6474.jpg]: https://img-my.csdn.net/uploads/201302/21/1361457088_6474.jpg
[1361457397_3651.jpg]: https://img-my.csdn.net/uploads/201302/21/1361457397_3651.jpg
[1361457789_2639.jpg]: https://img-my.csdn.net/uploads/201302/21/1361457789_2639.jpg