web端、android端的文件上传

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1、web端的文件上传。

这里是利用了第三方的jar包。这里所需要的jar包我已经上传到本博客的资源里了，以下是连接

http://download.csdn.net/detail/caihongshijie6/6239041

代码如下：

1)login.jsp

<%@ page contentType="text/html; charset=utf-8"%><html>  <body>    <form action="http://192.168.1.101:8080/Web3/LoginServlet" method="post" enctype="multipart/form-data">      file:<input name="file" type="file"/><br>      <input type="submit"/>    </form>  </body></html>

2)LoginServlet

package com.njupt.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.FileItemFactory;import org.apache.commons.fileupload.disk.DiskFileItemFactory;import org.apache.commons.fileupload.servlet.ServletFileUpload;public class LoginServlet extends HttpServlet {public LoginServlet() {super();}public void destroy() {super.destroy(); // Just puts "destroy" string in log// Put your code here}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {boolean isMultipart = ServletFileUpload.isMultipartContent(request);try {if (isMultipart) {FileItemFactory factory = new DiskFileItemFactory();ServletFileUpload upload = new ServletFileUpload(factory);List<FileItem> items = upload.parseRequest(request);String path = request.getSession().getServletContext().getRealPath("/files1");System.out.println(path);File dir = new File(path);if (!dir.exists()) {dir.mkdirs();}for (FileItem item : items) {if (item.isFormField()) {} else {String filename = item.getName();File file = new File(dir, getFileName(filename));item.write(file);}}} else {doGet(request, response);}} catch (Exception e) {e.printStackTrace();}}public String getFileName(String filename) {if (filename.contains("\\")) {return filename.substring(filename.lastIndexOf("\\") + 1);}return filename;}public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {}public void init() throws ServletException {// Put your code here}}

2、android文件上传功能的实现

这里也用到了第三方的jar包

下载链接：http://download.csdn.net/detail/caihongshijie6/6239103

public boolean uploadFile(String path , String username , String password , String filename) throws Exception{System.out.println("。。。。。自己写的android短的上传文件.......");org.apache.commons.httpclient.HttpClient httpClient = new org.apache.commons.httpclient.HttpClient();PostMethod postMethod = new PostMethod(path); Part[] parts = new Part[]{new StringPart("username",username),new StringPart("password",password),new FilePart("file",new File(filename))};MultipartRequestEntity entity = new MultipartRequestEntity(parts, postMethod.getParams());postMethod.setRequestEntity(entity);int responseCode = httpClient.executeMethod(postMethod);if(responseCode == 200){return true;}return false;}