从 android 中的服务器检索 UNICODE TO UTF-8 问题

Question

我将 unicode 存储在 mysql 数据库中，并尝试在我的 android 应用程序中使用 php 检索它。每当我尝试仅检索 unicode 而不是 utf-8 字符时。我在 http 中将编码指定为 utf-8 并且我在网上搜索了很多解决方案，但仍然没有找到答案。我也用过这个，但还是没有运气。

new String(json_data.getString("message").getBytes(""),"UTF-8")

我在下面发布我的代码。欢迎提出任何建议。我的要求是从服务器获取印地语、乌尔都语或任何语言，我需要显示。所以我做错了什么。 从数据库我得到这个 \u0cb9\u0ccc \u0c85\u0cb0\u0cc6 \u0caf\u0cc1

private class BackgroundTask extends AsyncTask <String, Void, String> {
      @Override
protected String doInBackground(String... url) {
String result = "";
ArrayList<NameValuePair>   nameValuePairs = new ArrayList<NameValuePair>(5);
String prefName = "MyPref";
SharedPreferences prefs=getSharedPreferences(prefName,MODE_PRIVATE);
 nameValuePairs.add(new BasicNameValuePair("username", mname.getText().toString()));
 nameValuePairs.add(new BasicNameValuePair("password", mpassword.getText().toString()));
 nameValuePairs.add(new BasicNameValuePair("regid", regid));
 nameValuePairs.add(new BasicNameValuePair("status_id", "1"));
 nameValuePairs.add(new BasicNameValuePair("clienttype_id", "clienttype_id"));
        try {
      HttpClient httpclient = new DefaultHttpClient();
            Resources resources=getResources(); 
 String urlstr=String.format(resources.getString(R.string.androidexternal));

 HttpPost httppost = new HttpPost(urlstr);// for test db                  
 // Add your data
    httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs,"UTF-8"));

              // Execute HTTP Post Request
              HttpResponse  response = httpclient.execute(httppost);

              inputStream = response.getEntity().getContent();

         }catch(Exception e){
             Log.e("log_tag", "Error in http connection "+e.toString());
     }
     //convert response to string
     try{//iso-8859-1,UTF-8
 BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream,"UTF-8"),8000);
             StringBuilder sb = new StringBuilder();
             String line = null;

             while ((line = reader.readLine()) != null) 
                  {
                sb.append(line + "\n");
             }
             inputStream.close();

             result=sb.toString();
     }catch(Exception e){
             Log.e("log_tag", "Error converting result "+e.toString());
     }
      if(result.contains("null")){

      } 
      else
      {
         try{
                    JSONArray jArray = new JSONArray(result);

                    for(int i=0;i<jArray.length();i++)
                    {
                            JSONObject json_data = jArray.getJSONObject(i);

                   if(i>=3){

System.out.println( new String(json_data.getString("message").getBytes(),"UTF-8"));

                         }

                    }
                   startActivity(intent); 

            }
             catch(JSONException e){
                    Log.e("log_tag", "Error parsing data "+e.toString());

            }  catch (UnsupportedEncodingException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }  catch (IOException e) {

                e.printStackTrace();
            }

      }
   return result.toString();
  }

服务器端代码是

// select query for login layout if(isset($_REQUEST['username']))
{

    $get_message_sql = mysql_query("SELECT `message`,`language` FROM doctor_custom_message WHERE  `client_id`='".$result['id']."' AND status='1' ");

 $number=mysql_num_rows( $get_message_sql);
   while($e=mysql_fetch_assoc($get_message_sql))
    if($number==0)
    {
        $output[]="null";

    }else{
          $output[]=$e;
          }

//header('content-type: text/plain; charset=utf-8');
    print(json_encode($output));

}// main brace closed

Answer 1

尝试删除"UTF-8"表单

httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs,"UTF-8"));

所以应该是httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

因为您已经在使用UrlEncodedFormEntity，所以不需要。

Answer 2

如果你正确设置了json_encode的参数

 $output=json_encode($output,JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_AMP | JSON_UNESCAPED_UNICODE);

编码值和传输数据没有问题，但如果再次不起作用.set

  header('Content-Type: application/json; charset=utf8');

您可以使用 urlencode 对 UTF-8 值进行编码并在 android 上对其进行解码

喜欢这个

urlencode('aیgfسبd');

输出

a%DB%8Cgf%D8%B3%D8%A8d

有了这个输出，你的 json 值没有问题。