Httppost上传

import java.io.BufferedReader;import java.io.DataOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;import java.nio.charset.Charset;import android.content.Context;import android.util.Log;public class HttpPost {    public static Boolean postSDFile(String urlstr, String msg, String filePath            ) {   final String TAG = "uploadFile";   final int TIME_OUT = 10 * 1000; // 超时时间   final String CHARSET = "utf-8"; // 设置编码   //String result = null;String BOUNDARY = Base64.encode(msg);// UUID.randomUUID().toString(); //边界标识// 随机生成String PREFIX = "--", LINE_END = "\r\n";String CONTENT_TYPE = "multipart/form-data"; // 内容类型int res = 0;URL url;InputStream is=null;try {url = new URL(urlstr);HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setReadTimeout(TIME_OUT);conn.setConnectTimeout(TIME_OUT);conn.setDoInput(true); // 允许输入流conn.setDoOutput(true); // 允许输出流conn.setUseCaches(false); // 不允许使用缓存conn.setRequestMethod("POST"); // 请求方式conn.setRequestProperty("Charset", CHARSET); // 设置编码conn.setRequestProperty("connection", "keep-alive");conn.setRequestProperty("Content-Type", CONTENT_TYPE+ ";boundary=" + BOUNDARY);File f = new File(filePath);if(!f.exists()){String write_str ="此文件已被删除"; try{            FileOutputStream fout = new FileOutputStream(f);          byte [] bytes = write_str.getBytes();            fout.write(bytes);          fout.close();        }          catch(Exception e){           e.printStackTrace();          } }is = new FileInputStream(f);//is = context.openFileInput(filePath);// 打开文件流if (is != null) {/*** 当文件不为空，把文件包装并且上传*/DataOutputStream dos = new DataOutputStream( conn.getOutputStream());StringBuffer sb = new StringBuffer();sb.append(PREFIX);sb.append(BOUNDARY);sb.append(LINE_END);/*** 这里重点注意： name里面的值为服务器端需要key 只有这个key 才可以得到对应的文件* filename是文件的名字，包含后缀名的 比如:abc.png*/sb.append("Content-Disposition: form-data; name=\"uploadedfile\"; filename=\"" + Base64.encode(filePath) + "\"" + LINE_END);sb.append("Content-Type: application/octet-stream; charset=" + CHARSET + LINE_END);sb.append(LINE_END);dos.write(sb.toString().getBytes());byte[] bytes = new byte[1024];int len = 0;while ((len = is.read(bytes)) != -1) {dos.write(bytes, 0, len);System.out.println("aaaa"+len);}is.close();dos.write(LINE_END.getBytes());byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINE_END) .getBytes();dos.write(end_data);dos.flush();/*** 获取响应码 200=成功 当响应成功，获取响应的流*/res = conn.getResponseCode();Log.e(TAG, "response code:" + res);Log.e(TAG, "request success");InputStream input = conn.getInputStream();StringBuffer sb1 = new StringBuffer();int ss;while ((ss = input.read()) != -1) {sb1.append((char) ss);}//result = sb1.toString();//Log.e(TAG, "result : " + result);}} catch (MalformedURLException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e1) {// TODO Auto-generated catch blocke1.printStackTrace();} if(res == 200){return true;}else{return false;}}public static String PostMsg(String pathUrl, String msg) {StringBuffer sb = null;sb = new StringBuffer();try {// 建立连接URL url = new URL(pathUrl);HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();//设置连接属性httpConn.setDoOutput(true);// 使用 URL 连接进行输出httpConn.setDoInput(true);// 使用 URL 连接进行输入httpConn.setUseCaches(false);// 忽略缓存httpConn.setRequestMethod("POST");// 设置URL请求方法String requestString = Base64.encode(msg);// 设置请求属性// 获得数据字节数据，请求数据流的编码，必须和下面服务器端处理请求流的编码一致byte[] requestStringBytes = requestString.getBytes();httpConn.setRequestProperty("Content-length", "" + requestStringBytes.length);httpConn.setRequestProperty("Content-Type", "application/octet-stream");httpConn.setRequestProperty("Connection", "Keep-Alive");// 维持长连接httpConn.setRequestProperty("Charset", "UTF-8");// 建立输出流，并写入数据OutputStream outputStream = httpConn.getOutputStream();outputStream.write(requestStringBytes);outputStream.close();//System.out.println("1");// 获得响应状态int responseCode = httpConn.getResponseCode();if (HttpURLConnection.HTTP_OK == responseCode) {// 连接成功// 当正确响应时处理数据 String readLine;BufferedReader responseReader;// 处理响应流，必须与服务器响应流输出的编码一致responseReader = new BufferedReader(new InputStreamReader(httpConn.getInputStream()));while ((readLine = responseReader.readLine()) != null) {sb.append(readLine).append("\n");}responseReader.close();                }} catch (Exception ex) {ex.printStackTrace();}return sb.toString();}}