Posted on 2010-09-07 00:55
penngo 阅读(5495)
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JBPM
本篇使用到的相关技术内容：
spring 3.0
jbpm4.4
hsqldb
hibernate
其中hsqldb和hibernate都是从jbpm4.4的lib文件夹里面拷过去的。
本篇不再介绍jbpm与spring集成和spring mvc两方面的内容，有需要，请看之前的文章
jbpm4.3与spring集成请看
http://www.blogjava.net/pengo/archive/2010/01/04/308219.html
spring3.0 mvc和rest小例子请看
http://www.blogjava.net/pengo/archive/2010/07/03/325164.html
本篇只实现两个功能，上传流程定义文件和发布该上传的流程定义文件。
使用的流程定义文件是使用上一篇jbpm流程设计器生成的定义文件，
有关jbpm流程设计器介绍，请看
http://www.blogjava.net/pengo/archive/2010/08/31/330346.html
流程图:
把流程图保存为test.jpdl.xml
1
<?xml version="1.0" encoding="GBK"?>
2<process name="process" xmlns="http://jbpm.org/4.4/jpdl">
3<start name="开始" g="83,34,40,40">
4 <transition name="to 任务" g="0,0" to="任务" />
5</start>
6<task name="任务" g="231,78,80,40">
7 <transition name="to 结束" g="0,0" to="结束" />
8</task>
9<end name="结束" g="173,188,40,40" />
10</process>
RestController.java的发布处理代码：
1@RequestMapping(value = "/deployAction", method = RequestMethod.POST)
2 public ModelAndView deployAction(HttpServletRequest request,
3
HttpServletResponse response, ModelMap modelMap) 
{
4
String realPath = request.getSession().getServletContext().getRealPath(
5 "")
6 + "/WEB-INF/deploy/";
7
try {
8 if (ServletFileUpload.isMultipartContent(request)) {
9 MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
10 for (Iterator it = multipartRequest.getFileNames(); it
11 .hasNext();) {
12 String key = (String) it.next();
13 MultipartFile file = multipartRequest.getFile(key);
14 if (file.getOriginalFilename().length() > 0) {
15 String filename = file.getOriginalFilename();
16 File saveFile = new File(realPath + filename);
17 FileOutputStream fos = new FileOutputStream(saveFile);
18 //保存上传的流程定义文件
19 fos.write(file.getBytes());
20 fos.flush();
21 fos.close();
22
23 ApplicationContext ctx = new ClassPathXmlApplicationContext(
24 "applicationContext.xml");
25 //调用已定义的Bean
26 ProcessEngine processEngine = (ProcessEngine) ctx
27 .getBean("processEngine");
28 File deployFile = new File(saveFile.getAbsolutePath());
29 if (deployFile.exists()) {
30 // 发布流程
31 String deploymentId = processEngine
32 .getRepositoryService().createDeployment()
33 .addResourceFromFile(deployFile).deploy();
34 System.out.println("========================ID:"
35 + deploymentId);
36 modelMap.put("deploy", "发布成功，版本号为:" + deploymentId);
37
}
38
39 }
40 }
41 }
42 } catch (Exception e) {
43 modelMap.put("deploy", "发布失败!" );
44 e.printStackTrace();
45 }
46
47 return new ModelAndView("/deploy", modelMap);
48
}
49
deploy.jsp代码：
1<%@ page language="java" contentType="text/html; charset=GBK"
2 pageEncoding="GBK"%>
3<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
4<html>
5<head>
6<meta http-equiv="Content-Type" content="text/html; charset=GBK">
7<title>上传</title>
8</head>
9<body>
10<%
11 String deploy = request.getAttribute("deploy").toString();
12%>
13<script>
14alert('<%=deploy%>');
15</script>
16<form name="upform" action="deployAction" method="POST" enctype="multipart/form-data">
17
18 <input type ="file" name="file1" id="file1"/> <br/>
19 <!-- <input type ="file" name="file2" id="file2"/> -->
20 <input type="submit" value="上传" /><br/>
21 </form>
22</body>
23</html>
运行效果：
本人测试环境：jdk6 + tomcat6.0.20
源码:
jbpm4.4_spring3