基于commons-fileupload-1.2.jar的纯jsp文件上传

来源：互联网发布：淘宝code和阿里云code 编辑：程序博客网时间：2024/06/16 23:08

1.首先引入：commons-fileupload-1.2.jar包

2.fileUpLoad.jsp页面

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%><%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %><html><head>    <title>文件上传</title></head><body>    <form action="fileDeal.jsp" method="post" enctype="multipart/form-data">          <table>              <tr>                  <td>用户姓名:</td>                  <td><input type="text" name="username"/></td>              </tr>              <tr>                  <td>密码：</td>                  <td><input type="text" name= "password"/></td>              </tr>          </table>          <input type="file" name="files"/>           <input type="submit" value="提交" />       </form>  </body></html>

3.fileDeal.jsp页面

<%@page import="java.io.File"%><%@page import="java.util.Iterator"%><%@page import="org.apache.commons.fileupload.FileItem"%><%@page import="java.util.List"%><%@page import="org.apache.commons.fileupload.FileItemFactory"%><%@page import="org.apache.commons.fileupload.disk.DiskFileItemFactory"%><%@page import="org.apache.commons.fileupload.servlet.ServletFileUpload"%><%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%><%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %><html><head>    <title>文件上传</title></head><body>    <%          //String uploadFilePath = request.getSession().getServletContext().getRealPath("/upload/" );          //检查请求类型          boolean isMultipart = ServletFileUpload.isMultipartContent(request);          //当enctype="multipart/form-data"并且method是post时，isMultipart为真          if(isMultipart){              FileItemFactory factory = new DiskFileItemFactory();              ServletFileUpload upload = new ServletFileUpload(factory);              //转换请求对象              List<FileItem> items = null;              items=upload.parseRequest(request);            Iterator<FileItem> iterator = items.iterator();              while(iterator.hasNext()){                  FileItem item = iterator.next();                  //保存上传文件                  if(item.isFormField()){                      //处理普通文本字段                      String fieldName = item.getFieldName();                    if(fieldName.equals("username")){                          out.print(item.getString());                      }else if(fieldName.equals("password")){                          out.print(item.getString());                      }                  }else{                      File fullfile = new File("F:/files");                    if(!fullfile.exists()){                        fullfile.mkdir();                    }                    File uploadfile = new File(fullfile,item.getName());                      item.write(uploadfile);                }              }          }        %>  </body></html>

4.测试
这里写图片描述

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