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(); } } }