的java發送UTF-16數據PHP不工作

Question

我發送數據使用JSON從Java到PHP，使用下面的代碼：

String url = "abc.php"; 

JSONObject json = new JSONObject(); 
json.put("msg", message); // message: "\ud83d\udc4d \ud83d\udc4e" 

HttpClient client = new DefaultHttpClient(); 
HttpConnectionParams.setConnectionTimeout(client.getParams(), 100000); 

HttpPost post = new HttpPost(url); 

StringEntity se = new StringEntity("json="+json.toString()); 
post.addHeader("content-type", "application/x-www-form-urlencoded"); 
post.setEntity(se); 

HttpResponse response; 
response = client.execute(post); 
String resFromServer = org.apache.http.util.EntityUtils.toString(response.getEntity()); 

Log.i("resFromServer", resFromServer); 

的PHP代碼：

if(isset($_POST["json"])) { 

    $jsonDecode = json_decode($_POST["json"]); 

    $msg = $jsonDecode->{"msg"}; 

    echo $msg; 
} 

但我'得到輸出爲？

而輸出應該

有一些編碼的問題？這怎麼解決？

Answer 1

嘗試先將請求的內容轉換爲utf8 這些字符串實際上可能不是UTF-16。所以，做它的安全和嘗試

if(isset($_POST["json"])) { 
    $string=$_POST['json']; 
    $jsonDecode = mb_convert_encoding($string, "UTF-8", mb_detect_encoding($string)); 
    $jsonDecode = json_decode($jsonDecode); 

    $msg = $jsonDecode->{"msg"}; 

    echo $msg; 
}