jbpm与ssh完整示例(二)

最新推荐文章于 2024-10-15 14:41:04 发布

最新推荐文章于 2024-10-15 14:41:04 发布 · 121 阅读

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流程的发布常用的有二种方式：直接发布processdefinition.xml定义的xml文件，在以前的文章描述中使用的方式。建议使用第二种方式，gpd.xml、processdefinition.xml、processimage.jpg压缩成zip文件上传。注rar不可以，java当中不支持这种商业化的压缩文件。

代码如下：

1 deployjbpm.jsp下选择zip压缩文件上传

<%@ page contentType="text/html;charset=UTF-8"%>

<%@ include file="/commons/taglibs.jsp"%>

<html>

<head>

</head>

<body>

<form action="${ctx}/jbpmdeploy.do?method=deploy" enctype="multipart/form-data" method="post" />

选择zip类型流程上传 : <input type="file" name="file" />

<br/>

<input type="submit">

</form>

</body>

</html>

2 struts中的action文件

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;

import com.shane.commons.core.web.StrutsAction;

import com.shane.security.service.UploadProcessManager;

public class JbpmAction extends StrutsAction {

private static Log log = LogFactory.getLog(JbpmAction.class);

private UploadProcessManager uploadProcessManager;

public void setUploadProcessManager(UploadProcessManager uploadProcessManager) {

this.uploadProcessManager = uploadProcessManager;

}

/**

* 上传流程文件

* @param mapping

* @param form

* @param request

* @param response

* @return

*/

public ActionForward deploy(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response)throws Exception {

log.info("执行流程部署！");

log.info(uploadProcessManager.handleRequest(request));

return mapping.findForward("delpoyindex");

}

}

3 Service类，使用时要修改自已的hibernate的封装。代码中使用spring的设置式注入方式。相关文件可以自行编写。本方式是根据jbpm自带的示例改写。

3.1接口定义

import java.io.IOException;

import javax.servlet.http.HttpServletRequest;

public interface UploadProcessManager {

public void printInput(HttpServletRequest request) throws IOException;

public String handleRequest(HttpServletRequest request);

}

3.2实现类

import java.io.IOException;

import java.io.InputStream;

import java.util.Iterator;

import java.util.List;

import java.util.zip.ZipInputStream;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.fileupload.DiskFileUpload;

import org.apache.commons.fileupload.FileItem;

import org.apache.commons.fileupload.FileUpload;

import org.apache.commons.fileupload.FileUploadException;

import org.jbpm.JbpmConfiguration;

import org.jbpm.JbpmContext;

import org.jbpm.graph.def.ProcessDefinition;

import com.shane.commons.core.dao.HibernateEntityDao;

public class UploadProcessManagerImpl extends HibernateEntityDao implements UploadProcessManager{

private JbpmConfiguration jbpmConfiguration;

public void printInput(HttpServletRequest request) throws IOException {

InputStream inputStream = request.getInputStream();

StringBuffer buffer = new StringBuffer();

int read;

while ((read = inputStream.read()) != -1) {

buffer.append((char)read);

}

}

public String handleRequest(HttpServletRequest request) {

if (!FileUpload.isMultipartContent(request)) {

return "Not a multipart request";

}

try {

DiskFileUpload fileUpload = new DiskFileUpload();

List list = fileUpload.parseRequest(request);

Iterator iterator = list.iterator();

if (!iterator.hasNext()) {

return "No process file in the request";

}

FileItem fileItem = (FileItem)iterator.next();

if (fileItem.getContentType().indexOf("application/x-zip-compressed") == -1) {

return "Not a process archive";

}

return doDeployment(fileItem);

} catch (FileUploadException e) {

e.printStackTrace();

return "FileUploadException";

}

}

public String doDeployment(FileItem fileItem) {

try {

ZipInputStream zipInputStream = new ZipInputStream(fileItem.getInputStream());

JbpmContext jbpmContext = JbpmContext.getCurrentJbpmContext();

if(jbpmContext == null) {

jbpmContext = this.getJbpmContext();

}

ProcessDefinition processDefinition = ProcessDefinition.parseParZipInputStream(zipInputStream);

jbpmContext.deployProcessDefinition(processDefinition);

zipInputStream.close();

return "Deployed archive " + processDefinition.getName() + " successfully";

} catch (IOException e) {

return "IOException";

}

}

private JbpmContext getJbpmContext(){

JbpmContext context = jbpmConfiguration.getInstance().createJbpmContext();

context.setSession(this.getSession());

return context;

}

public void setJbpmConfiguration(JbpmConfiguration jbpmConfiguration) {

this.jbpmConfiguration = jbpmConfiguration;

}

}