android手机客户端上传文件到客户端(web应用)_源代码代码

android手机上传文件： 1.准备三个jar包 "commons-codec-1.3.jar"、"commons-httpclient-3.1.jar"、"commons-logging-1.1.jar" 2.手机端代码实现 //打开一个浏览器 HttpClient client = new HttpClient(); //访问的路径 PostMethod post = new PostMethod( "http://192.168.1.135:8080/LoginWeb/servlet/UploadServlet"); try { String path = et_path.getText().toString().trim(); File file = new File(path); if (file.exists() && file.length() > 0) { //上传的字段 Part[] parts = { new StringPart("aaaa", "111"),//普通字段，相当于表单中的普通字段 new FilePart("picc", new File(file.getAbsolutePath())) };//上传字段，相当于表单中的上传字段 //设置请求实体 post.setRequestEntity(new MultipartRequestEntity(parts, post .getParams())); //设置超时时间 client.getHttpConnectionManager().getParams() .setConnectionTimeout(5000); int status = client.executeMethod(post); if (status == 200) { Toast.makeText(this, "上传成功", 1).show(); } else { Toast.makeText(this, "上传失败", 1).show(); } } else { Toast.makeText(this, "上传的文件不存在", 0).show(); } } catch (Exception e) { e.printStackTrace(); post.releaseConnection(); } 3.服务器端代码实现：准备jar包："commons-fileupload-1.2.2.jar"和"commons-io-1.4.jar" //判断客户端提交的表单是否是“multipart/form-data”形式提交的的 boolean isMultipart = ServletFileUpload.isMultipartContent(request); if (isMultipart) { //获取上传的文件存储在web应用的哪里 String realpath = request.getSession().getServletContext() .getRealPath("/files"); //E:\AppData\tomcat\apache-tomcat-6.0.36\webapps\LoginWeb\files System.out.println(realpath); File dir = new File(realpath); if (!dir.exists()) dir.mkdirs(); //创建一个文件条目解析工厂，用于下面创建ServletFileUpload的一个对象 FileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(factory); upload.setHeaderEncoding("UTF-8"); try { List<FileItem> items = upload.parseRequest(request); for (FileItem item : items) { //普通字段 if (item.isFormField()) { String name1 = item.getFieldName();// 得到请求参数的名称 String value = item.getString("UTF-8");// 得到参数值 System.out.println(name1 + "=" + value);//aaaa=111 } else { //上传字段 //将上传的内容写到web应用的指定目录下 item.write(new File(dir, System.currentTimeMillis() + item.getName().substring( item.getName().lastIndexOf(".")))); } } } catch (Exception e) { e.printStackTrace(); } } else { doGet(request, response); } 附加代码：javaweb详细服务器端获取客户端(浏览器)上传的文件: public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=utf-8"); try{ request.setCharacterEncoding("utf-8"); //得到上传文件要存储的真实路径 String realPath = getServletContext().getRealPath("/WEB-INF/files"); //得到DiskFileItemFactory的一个实例 DiskFileItemFactory factory=new DiskFileItemFactory(); //自定义临时目录 factory.setRepository(new File(getServletContext().getRealPath("/temp"))); //利用得到的factory创建一个ServletFileUpload的一个实例 ServletFileUpload upload=new ServletFileUpload(factory); //判断form表单是否以“multipart/form-data”形式提交的数据 boolean isMultipart = upload.isMultipartContent(request); if(!isMultipart){ return ; } //设置单个文件上传的大小 upload.setFileSizeMax(5*1024*1024); //设置总共文件上传大小 upload.setSizeMax(10*1024*1024); //对HttpServletRequest进行解析,得到一个list对象 List<FileItem> items = upload.parseRequest(request); //对items进行遍历，判断是否是普通字段还是上传字段 for(FileItem item:items){ if(item.isFormField()){ //普通字段 String fieldName=item.getFieldName(); String value=item.getString("utf-8"); System.out.println("普通字段:"+fieldName+"="+value); }else{ //上传字段 //限制上传文件只能是图片 String contentType = item.getContentType(); System.out.println("contentType..."+contentType); if(!contentType.startsWith("image/")){ throw new RuntimeException("上传的文件只能是图片"); } //得到输入流 InputStream in = item.getInputStream(); //得到上传文件的名称--》绝对路径 String path = item.getName(); System.out.println("上传字段:"+path); path=path.substring(path.lastIndexOf("\\")+1); System.out.println("切割后"+path); if("".equals(path)){ continue; } //创建一个输出流，将文件写道指定的目录下 path=UUID.randomUUID().toString()+"_"+path; String mulitPath=makeDir(realPath,path); OutputStream out=new FileOutputStream(mulitPath+"\\"+path); //开始写数据 int len=-1; byte[] buf=new byte[1024]; while((len=in.read(buf))!=-1){ out.write(buf, 0, len); } in.close(); out.close(); item.delete(); } } }catch(FileUploadBase.SizeLimitExceededException e){ response.getWriter().write("总文件文件不能超过10M大小"); }catch(FileUploadBase.FileSizeLimitExceededException e){ response.getWriter().write("单个文件不能超过5M大小"); }catch(Exception e){ e.printStackTrace(); } } private String makeDir(String realPath, String path) { int hashCode=path.hashCode(); int path1=hashCode&0xf; int path2=(hashCode&0xf0)>>4; String newPath=realPath+"\\"+path1+"\\"+path2; File file=new File(newPath); if(!file.exists()){ file.mkdirs(); } return newPath; }