HttpClient 3.1 文件上传

客户端：

需要commons-codec,commons-httpclient-3.1,commons-logging-1.1.1

           String targetURL = null;// TODO 指定URL   File targetFile = null;// TODO 指定上传文件     targetFile = new File("C:\\Users\\Administrator\\Desktop\\1.mp3");   targetURL = "http://localhost:8080/HttpClientDemo/test"; //servleturl   PostMethod filePost = new PostMethod(targetURL);     try   {    //通过以下方法可以模拟页面参数提交    filePost.setParameter("name", "中文");    filePost.setParameter("pass", "1234");    Part[] parts = { new FilePart(targetFile.getName(), targetFile) };    filePost.setRequestEntity(new MultipartRequestEntity(parts,filePost.getParams()));    HttpClient client = new HttpClient();    client.getHttpConnectionManager().getParams().setConnectionTimeout(10000);    int status = client.executeMethod(filePost);    if (status == HttpStatus.SC_OK)    {     System.out.println("上传成功");     // 上传成功    }    else    {     System.out.println("上传失败");     // 上传失败    }   }   catch (Exception ex)   {    ex.printStackTrace();   }   finally   {    filePost.releaseConnection();   } 

服务器端:

需要commons-fileupload-1.2.1.jar commons-io.jar

public class HttpClientTest extends HttpServlet {private String uploadPath = "D:\\temp"; // 上传文件的目录    private String tempPath = "d:\\temp\\buffer\\"; // 临时文件目录    File tempPathFile;        public void init() throws ServletException {        File uploadFile = new File(uploadPath);        if (!uploadFile.exists()) {            uploadFile.mkdirs();        }        File tempPathFile = new File(tempPath);         if (!tempPathFile.exists()) {            tempPathFile.mkdirs();        }     }//@Override//protected void service(HttpServletRequest request, HttpServletResponse response)//throws ServletException, IOException {//////String name=request.getParameter("name");////System.out.println("name: "+name);////request.getRequestDispatcher("index.jsp").forward(request, response);////////}public void doPost(HttpServletRequest request, HttpServletResponse response)    throws ServletException, IOException{   try    {   System.out.println("dopost");    // Create a factory for disk-based file items    DiskFileItemFactory factory = new DiskFileItemFactory();    // Set factory constraints    factory.setSizeThreshold(4096); // 设置缓冲区大小，这里是4kb    factory.setRepository(tempPathFile);// 设置缓冲区目录    // Create a new file upload handler    ServletFileUpload upload = new ServletFileUpload(factory);    // Set overall request size constraint    upload.setSizeMax(10*1024*1024); // 设置最大文件尺寸，这里是10MB    List<FileItem> items = upload.parseRequest(request);// 得到所有的文件    Iterator<FileItem> i = items.iterator();    while (i.hasNext())    {     FileItem fi = (FileItem) i.next();     String fileName = fi.getName();     System.out.println(fileName);     if (fileName != null)     {      File fullFile = new File(fi.getName());      File savedFile = new File(uploadPath, fullFile.getName());      fi.write(savedFile);     }    }    System.out.print("upload succeed");   }   catch (Exception e)   {    System.out.println(e.getMessage());    // 可以跳转出错页面    e.printStackTrace();   }}}