fileupload.zip

package edu.hhsy.servlets; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import javax.servlet.ServletException; import javax.servlet.annotation.MultipartConfig; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.*; import java.util.List; @WebServlet(name = "UploadServlet",urlPatterns = "/UploadServlet") @MultipartConfig public class UploadServlet extends HttpServlet { protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html,charset=utf-8"); PrintWriter writer=response.getWriter(); DiskFileItemFactory factory = new DiskFileItemFactory(); File f = new File("F:\\zxf"); if (!f.exists()) { f.mkdirs(); } factory.setRepository(f); ServletFileUpload fileUpload = new ServletFileUpload(factory); fileUpload.setHeaderEncoding("utf-8"); //response.getWriter(); try { List<FileItem> fileitems = fileUpload.parseRequest(request); for (FileItem fileitem : fileitems) { if (fileitem.isFormField()) { // 获得字段名和字段值 String name = fileitem.getFieldName(); if (name.equals("name")) { //如果文件不为空，将其保存在value中 if (!fileitem.getString().equals("")) { String value = fileitem.getString("utf-8"); writer.print("上传者：" + value + "<br />"); } } } else { // 获取上传的文件名 String filename = fileitem.getName(); //处理上传文件 if (filename != null && !filename.equals("")) { response.getWriter().print("上传的文件名称是：" + filename + "<br />"); // 截取出文件名 filename = filename.substring(filename.lastIndexOf("\\") + 1); // 文件名需要唯一 //filename = UUID.randomUUID().toString() + "_" + filename; // 在服务器创建同名文件 String webPath = "/upload/"; //将服务器中文件夹路径与文件名组合成完整的服务器端路径 String filepath = getServletContext() .getRealPath(webPath + filename); // 创建文件 File file = new File(filepath); file.getParentFile().mkdirs(); file.createNewFile(); // 获得上传文件流 InputStream in = fileitem.getInputStream(); // 使用FileOutputStream打开服务器端的上传文件 FileOutputStream out = new FileOutputStream(file); // 流的拷贝 byte[] buffer = new byte[1024];//每次读取1个字节 int len; //开始读取上传文件的字节，并将其输出到服务端的上传文件输出流中 while ((len = in.read(buffer)) > 0) out.write(buffer, 0, len); // 关闭流 in.close(); out.close(); // 删除临时文件 fileitem.delete(); writer.print("上传文件成功！<br />"); } } } } catch (Exception e) { System.out.println("Exception"); e.printStackTrace(); } } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { } }