Servet实现文件上传（fileupload）

jsp使用servlet实现文件上传：

1.首先要到apache官网上下载commons-fileupload-1.2.2-bin.jar和其依赖的commons-io-2.4-bin.jar

Jsp:

[html]

username:<input type="text" name="username"><br>

file:<input type="file" name="file"><br>

file1:<input type="file" name="file1"><br>

</form>

Servlet:

[java]

package com.wildcat.servlet;

import java.io.File;

import java.io.IOException;

import java.io.PrintWriter;

import java.util.List;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;

import org.apache.commons.fileupload.disk.DiskFileItemFactory;

import org.apache.commons.fileupload.servlet.ServletFileUpload;

public class UploadServlet extends HttpServlet {

public void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

DiskFileItemFactory factory=new DiskFileItemFactory();

String path=request.getRealPath("/upload");

factory.setRepository(new File(path));

factory.setSizeThreshold(1024*1024);

ServletFileUpload upload=new ServletFileUpload(factory);

try{

List <FileItem> list=(List <FileItem>)upload.parseRequest(request);

for(FileItem item:list){

String name=item.getFieldName();//易做图的文本域名

if (item.isFormField()){//如果上传的是文本域

String value=item.getString();//提交的内容

System.out.println(name+" : "+value);

request.setAttribute(name, value);

}else {//如果上传的是文件

String value=item.getName();

//下面是对特殊浏览器的处理

int start=value.lastIndexOf("\\");

String fileName=value.substring(start+1);

request.setAttribute(name, fileName);

item.write(new File(path,fileName));

} www.zzzyk.com

}

}catch(Exception e){

e.printStackTrace();

}

request.getRequestDispatcher("fileuploadResult.jsp").forward(request, response);

}

补充：Web开发 , Jsp ,