File file = new File(imageUrl);
String httpUrl = httpDomain+"AddImageServlet"+"?gid="+gid;
HttpPost request = new HttpPost(httpUrl);
HttpClient httpClient = new DefaultHttpClient();
FileEntity entity = new FileEntity(file,"binary/octet-stream");
HttpResponse response;
try {
  request.setEntity(entity);
  entity.setContentEncoding("binary/octet-stream");
  response = httpClient.execute(request);
//如果返回狀態(tài)為200，獲得返回的結果
if(response.getStatusLine().getStatusCode()==HttpStatus.SC_OK){
……//圖片上傳成功
}
}
catch(Exception e){
}

//獲得新聞id
String gid = request.getParameter("gid");
String filePath = getRealPath(request) + "\\userpic\\";
//   定義上載文件的最大字節(jié)
int MAX_SIZE = 102400 * 102400;
//   聲明文件讀入類
DataInputStream in = null;
FileOutputStream fileOut = null;
//   取得客戶端上傳的數(shù)據(jù)類型
String contentType = request.getContentType();
if(contentType.indexOf("binary/octet-stream") >= 0){
  //   讀入上傳的數(shù)據(jù)
  in = new DataInputStream(request.getInputStream());
  int formDataLength = request.getContentLength();
  // 如果圖片過大
  if(formDataLength > MAX_SIZE){
    String errormsg=("上傳的文件字節(jié)數(shù)不可以超過" + MAX_SIZE);
    out.println(errormsg);
    return ;
  }
//   保存上傳文件的數(shù)據(jù)
byte dataBytes[] = new byte[formDataLength];
int byteRead = 0;
int totalBytesRead = 0;
//   上傳的數(shù)據(jù)保存在byte數(shù)組
while(totalBytesRead < formDataLength){
byteRead = in.read(dataBytes,totalBytesRead,formDataLength);
totalBytesRead += byteRead;
 }
String fileName = filePath + gid+".png";
 //   檢查上載文件的目錄是否存在
File fileDir = new File(filePath);
if(!fileDir.exists()){
fileDir.mkdirs();
}
//   創(chuàng)建文件的寫出類
fileOut = new FileOutputStream(fileName);
//   保存文件的數(shù)據(jù)
fileOut.write(dataBytes);
fileOut.close();
//保存文件的路徑名
……

//獲得網(wǎng)絡中的圖片
public Bitmap getGossipImage(String gid){
    String httpUrl = httpDomain+"userpic/"+gid+".png";
    Bitmap bitmap = null;
    HttpGet httpRequest = new HttpGet(httpUrl);
    //取得HttpClient 對象
    HttpClient httpclient = new DefaultHttpClient();
    try {
      //請求httpClient ，取得HttpRestponse
      HttpResponse httpResponse = httpclient.execute(httpRequest);
      if(httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK){
        //取得相關信息 取得HttpEntiy
        HttpEntity httpEntity = httpResponse.getEntity();
        InputStream is = httpEntity.getContent();
        bitmap = BitmapFactory.decodeStream(is);
        is.close();
      }else{
         Toast.makeText(context, "連接失敗!", Toast.LENGTH_SHORT).show();
      }
    } catch (ClientProtocolException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
    return bitmap;
}