android上传图片完整代码

package com.spring.sky.image.upload.network; import java.io.DataOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import java.util.UUID; import android.util.Log; /** * * 上传工具类 * @author spring sky * Email:vipa1888@163.com * QQ:840950105 * MyName:石明政 */ public class UploadUtil { private static final String TAG = "uploadFile"; private static final int TIME_OUT = 10*1000; //超时时间 private static final String CHARSET = "utf-8"; //设置编码 /** * android上传文件到服务器 * @param file 需要上传的文件 * @param RequestURL 请求的rul * @return 返回响应的内容 */ public static String uploadFile(File file,String RequestURL) { String result = null; String BOUNDARY = 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 try { URL url = new URL(RequestURL); 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); if(file!=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=\"img\"; filename=\""+file.getName()+"\""+LINE_END); sb.append("Content-Type: application/octet-stream; charset="+CHARSET+LINE_END); sb.append(LINE_END); dos.write(sb.toString().getBytes()); InputStream is = new FileInputStream(file); byte[] bytes = new byte[1024]; int len = 0; while((len=is.read(bytes))!=-1) { dos.write(bytes, 0, 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 */ int res = conn.getResponseCode(); Log.e(TAG, "response code:"+res); // if(res==200) // { 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); // } // else{ // Log.e(TAG, "request error"); // } } } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return result; } } ///** // * 添加超时和代理 // * @param context // * @return // */ //private static HttpClient getHttpClient(Context context) //{ // BasicHttpParams httpParams = new BasicHttpParams(); // HttpConnectionParams.setConnectionTimeout(httpParams, 10000); // HttpConnectionParams.setSoTimeout(httpParams, 10000); // HttpClient client = new DefaultHttpClient(httpParams); // WifiManager manager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE); // if (!manager.isWifiEnabled()) { // Uri uri = Uri.parse("content://telephony/carriers/preferapn"); // Cursor mCursor = context.getContentResolver().query(uri, null, null, null, null); // if (mCursor != null && mCursor.moveToFirst()) { // String proxyStr = mCursor.getString(mCursor.getColumnIndex("proxy")); // if (proxyStr != null && proxyStr.trim().length() > 0) { // HttpHost proxy = new HttpHost(proxyStr, 80); // client.getParams().setParameter( // ConnRouteParams.DEFAULT_PROXY, proxy); // } // } // } // // return client; //}