如何在Android中使用HttpPost将图像上传到服务器？

Question

这里是我的代码发送一些数据到php服务器使用HttpPost Json格式。我如何上传图像以及数据？

HttpPost httppost = new HttpPost(urlToSendCheckListReport); 
JSONObject json = new JSONObject(); 
     // prepare JSON data: 
     json.put("tag_id", tagID); 
     json.put("building_id", buildingID); 
     json.put("timestamp", new SimpleDateFormat("dd-MM-yyyy, HH:mm:ss").format(Calendar.getInstance().getTime())); 

     JSONArray postjson=new JSONArray(); 
     postjson.put(json); 

     // Post the data: 
     httppost.setHeader("json", json.toString()); 
     httppost.getParams().setParameter("jsonpost",postjson); 

    HttpResponse response = new DefaultHttpClient().execute(httppost); 

    if(response != null) 
    { 
    .....Read the response 
    } 

在此先感谢

Answer 1

HttpPost httppost = new HttpPost(urlToSendCheckListReport); 
     JSONObject json = new JSONObject(); 
    // prepare JSON data: 
    json.put("tag_id", tagID); 
    json.put("building_id", buildingID); 
    json.put("timestamp", new SimpleDateFormat("dd-MM-yyyy, HH:mm:ss").format(Calendar.getInstance().getTime())); 

    JSONArray postjson=new JSONArray(); 
    postjson.put(json); 

    StringEntity entity = null; 
    try { 
        entity = new StringEntity(entityString); 
        entity.setContentType("application/json"); 
      } catch (UnsupportedEncodingException e) { 
        e.printStackTrace(); 
      } 
    httppost.setEntity(entity); 
    // Post the data: 
    httppost.setHeader("json", json.toString()); 
    httppost.getParams().setParameter("jsonpost",postjson); 

HttpResponse response = new DefaultHttpClient().execute(httppost); 

if(response != null) 
{ 
.....Read the response 
} 

Answer 2

试试这个：

HttpPost httppost = new HttpPost(urlToSendCheckListReport); 
JSONObject json = new JSONObject(); 
    // prepare JSON data: 
    json.put("tag_id", tagID); 
    json.put("building_id", buildingID); 
    json.put("timestamp", new SimpleDateFormat("dd-MM-yyyy, HH:mm:ss").format(Calendar.getInstance().getTime())); 

    JSONArray postjson=new JSONArray(); 
    postjson.put(json); 

    // IMAGE 
    BitmapFactory.Options o2 = new BitmapFactory.Options(); 
    o2.inSampleSize = scale; 
    bitmap = BitmapFactory.decodeFile(filePath, o2); 
    ByteArrayOutputStream bos = new ByteArrayOutputStream(); 
    bitmap.compress(Bitmap.CompressFormat.JPEG, 100, bos); 
    byte[] data = bos.toByteArray(); 
    String mediaString = Base64.encodeBytes(data); 
    // /IMAGE 

    // Post the data: 
    httppost.setHeader("json", json.toString()); 
    httppost.getParams() 
    .setParameter("jsonpost",postjson) 
    .setParameter("image", new StringBody(mediaString)); //ADD IMAGE PARAMETER 

    HttpResponse response = new DefaultHttpClient().execute(httppost); 

    if(response != null) 
    { 
    .....Read the response 
    }