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JSP页面/Apache FileUpload组件上传文件的与此同时,传递其他参数的方法

优良自学吧提供JSP页面/Apache FileUpload组件上传文件的与此同时,传递其他参数的方法,JSP页面/Apache FileUpload组件上传文件的同时,传递其他参数的方法 Spring3.0+Apache Tomcatv7.0+JDK1.7.0_u45+J2EE1.4验证通过。 需求:使用JSP页面上传文件时,同时需要传递相关参数。 1、  需要将

JSP页面/Apache FileUpload组件上传文件的同时,传递其他参数的方法

Spring3.0+Apache Tomcatv7.0+JDK1.7.0_u45+J2EE1.4验证通过。

需求:使用JSP页面上传文件时,同时需要传递相关参数。

1、  需要将form设置为enctype="multipart/form-data"method="post"参数;

2、  由于此时URL参数不能通过request.getParameter()获得,所以为了让@RequestMapping中设置的params="command=upload"条件生效,需要将参数直接加到表单的action中action="item.do?command=upload"

3、  在控制器处理时,使用item.isFormField(),item.getFieldName();item.getString()等方法去获取表单域属性名和参数;

 

JAVA

import org.apache.commons.fileupload.DiskFileUpload;

import org.apache.commons.fileupload.FileItem;

 

@RequestMapping(value = "item", params = "command=upload", method = RequestMethod.POST)

public String upload(ItemActionForm form, HttpServletRequest request,

                 HttpServletResponse response) throws Exception {

           String fullFileName = null;

            //Get real absolute path

           String realPath = request.getSession().getServletContext()

                      .getRealPath("/images");

           System.out.println("realPath=" + realPath);

 

           DiskFileUpload disk = new DiskFileUpload();

           try {

                 List<FileItem> files = (List<FileItem>) disk.parseRequest(request);

                 for (FileItem item : files) {

                      // Parse the parameter

                      if (item.isFormField()) {

                            System.out.println("item.isFormField()");

                            String field = item.getFieldName();

                            if (field != null) {

                                  if (field.equalsIgnoreCase("itemNo")) {

                                       itemNo = item.getString();

                                       System.out.println("itemNo=" + itemNo);

                                  }

                            }

 

                      }

 

                      // parse the file data

                      fullFileName = item.getName();

                      if (fullFileName == null) {

                            System.out.println("fullFileName not existed.");

                            continue;

                      }

                       //Retrive the filename from full pathname.

                      String fileName1 = fullFileName.substring(fullFileName

                                  .lastIndexOf("\\") + 1);

                      File file1 = new File(realPath, fileName1);

                      file1.getParentFile().mkdirs();

                      file1.createNewFile();

 

                      InputStream ins = item.getInputStream();

                      OutputStream ous = new FileOutputStream(file1);

 

                      try {

                            byte[] buffer = new byte[1024];

                            int len = 0;

                            while ((len = ins.read(buffer)) > -1)

                                  ous.write(buffer, 0, len);

 

                      } finally {

                            ous.close();

                            ins.close();

                      }

                 }

           } catch (Exception e) {

                 // TODO Auto-generated catch block

                 e.printStackTrace();

           }

 

           return "redirect:item.do";

      }

 

JSP页面:

<form name="itemForm" id="itemForm" action="item.do?command=upload" enctype="multipart/form-data" method="post">

      <input type="hidden" name="itemNo" value="${item.itemNo }">

<input name="itemFile" type="file" class="text1" size="40" maxlength="40">(必须是.gif或.jpg文件)

 



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