7.3.1 Android 文件上传

//计算传输给服务器的实体数据总长度(文本总长度+数据总长度+分隔符) int dataLength = textEntity.toString().getBytes().length + fileDataLength + endline.getBytes().length; URL url = new URL(path); //默认端口号其实可以不写 int port = url.getPort()==-1 ? 80 : url.getPort(); //建立一个Socket链接 Socket socket = new Socket(InetAddress.getByName(url.getHost()), port); //获得一个输出流（从Android流到web） OutputStream outStream = socket.getOutputStream(); //下面完成HTTP请求头的发送 String requestmethod = "POST "+ url.getPath()+" HTTP/1.1/r/n"; outStream.write(requestmethod.getBytes()); //构建accept String accept = "Accept: image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*/r/n"; outStream.write(accept.getBytes()); //构建language String language = "Accept-Language: zh-CN/r/n"; outStream.write(language.getBytes()); //构建contenttype String contenttype = "Content-Type: multipart/form-data; boundary="+ BOUNDARY+ "/r/n"; outStream.write(contenttype.getBytes()); //构建contentlength String contentlength = "Content-Length: "+ dataLength + "/r/n"; outStream.write(contentlength.getBytes()); //构建alive String alive = "Connection: Keep-Alive/r/n"; outStream.write(alive.getBytes()); //构建host String host = "Host: "+ url.getHost() +":"+ port +"/r/n"; outStream.write(host.getBytes()); //写完HTTP请求头后根据HTTP协议再写一个回车换行 outStream.write("/r/n".getBytes()); //把所有文本类型的实体数据发送出来 outStream.write(textEntity.toString().getBytes()); //把所有文件类型的实体数据发送出来 for(FormFile uploadFile : files) { StringBuilder fileEntity = new StringBuilder(); fileEntity.append("--"); fileEntity.append(BOUNDARY); fileEntity.append("/r/n"); fileEntity.append("Content-Disposition: form-data;name=/""+ uploadFile.getParameterName()+"/";filename=/""+ uploadFile.getFilname() + "/"/r/n"); fileEntity.append("Content-Type: "+ uploadFile.getContentType()+"/r/n/r/n"); outStream.write(fileEntity.toString().getBytes()); //边读边写 if(uploadFile.getInStream()!=null) { byte[] buffer = new byte[1024]; int len = 0; while((len = uploadFile.getInStream().read(buffer, 0, 1024))!=-1) { outStream.write(buffer, 0, len); } uploadFile.getInStream().close(); } else { outStream.write(uploadFile.getData(), 0, uploadFile.getData().length); } outStream.write("/r/n".getBytes()); } //下面发送数据结束标志，表示数据已经结束 outStream.write(endline.getBytes()); BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream())); //读取web服务器返回的数据，判断请求码是否为200，如果不是200，代表请求失败 if(reader.readLine().indexOf("200")==-1) { return false; } outStream.flush(); outStream.close(); reader.close(); socket.close(); return true; } /** * 提交数据到服务器 * @param path 上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，因为它会指向手机模拟器，你可以使用http://www.baidu.com或http://192.168.1.10:8080这样的路径测试) * @param params 请求参数 key为参数名,value为参数值 * @param file 上传文件 */ public static boolean post(String path, Map<String, String> params, FormFile file) throws Exception { return post(path, params, new FormFile[]{file}); } /** * 提交数据到服务器 * @param path 上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，因为它会指向手机模拟器，你可以使用http://www.baidu.com或http://192.168.1.10:8080这样的路径测试) * @param params 请求参数 key为参数名,value为参数值 * @param encode 编码 */ public static byte[] postFromHttpClient(String path, Map<String, String> params, String encode) throws Exception { //用于存放请求参数 List<NameValuePair> formparams = new ArrayList<NameValuePair>(); for(Map.Entry<String, String> entry : params.entrySet()) { formparams.add(new BasicNameValuePair(entry.getKey(), entry.getValue())); } UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formparams, encode); HttpPost