我做了一个简单的json响应代码但是在ANDROID中它被作为一个字符串而不是一个对象，所以我去了一个JSON Validator WebSite。 当我复制响应时，它说JSON是Vaild，但是当我通过URL检查它时，它显示了以下内容：
Error:Invalid encoding, expecting UTF-8, UTF-16 or UTF-32.[Code 29, Structure 0]
Error:Expecting object or array, not string.[Code 1, Structure 1]
Error:Strings should be wrapped in double quotes.[Code 17, Structure 1]
Json回复：
{"questions":[{"id":"1","user_id":"1","city":"1","question":"we","likes":"0","img":"0","req_date":"2016-10-03 23:06:06","qort":"q","user_name":"basel","user_img":"0","comments":"$num"},{"id":"2","user_id":"1","city":"1","question":"\u0633\u064a \u0634\u0633\u064a\u0628\u0633 \u0628\u064a\u0633 \u0628\u064a\u0633","likes":"0","img":"0","req_date":"2016-10-03 23:30:44","qort":"q","user_name":"basel","user_img":"0","comments":"0"},{"id":"3","user_id":"3","city":"2","question":"\u0633\u064a \u0634\u0633\u064a2222\u0628\u0633 \u0628\u064a\u0633 \u0628\u064a\u0633","likes":"0","img":"0","req_date":"2016-10-03 23:32:06","qort":"q","user_name":"\u0645\u062d\u0645\u062f \u0627\u0644\u0633\u0639\u064a\u062f\u064a","user_img":"","comments":"0"},{"id":"4","user_id":"1","city":"1","question":"\u0645\u0631\u062d\u0628\u0627 \u0645\u0631\u062d\u0628\u0627 \u062a\u0633\u064a\u0633\u064a \u062a\u0633\u064a \u0633\u062a\u0646\u064a\u0645 \u0633\u064a \u0633\u0646\u064a \u0633\u0646\u0645\u064a \u0633\u0646 \u0646\u0633\u0634\u064a \u0649\u0646\u0645\u0629","likes":"0","img":"0","req_date":"2016-10-03 23:32:59","qort":"q","user_name":"basel","user_img":"0","comments":"0"},{"id":"5","user_id":"1","city":"1","question":"\u0645\u0631\u062d\u0628\u0627 \u0645\u0631\u062d\u0628\u0627 \u062a\u0633\u064a\u0633\u064a \u062a\u0633\u064a \u0633\u062a\u0646\u064a\u0645 \u0633\u064a \u0633\u0646\u064a \u0633\u0646\u0645\u064a \u0633\u0646 \u0646\u0633\u0634\u064a \u0649\u0646\u0645\u0629","likes":"0","img":"0","req_date":"2016-10-04 00:18:41","qort":"q","user_name":"basel","user_img":"0","comments":"0"}]}
漂亮格式的JSON：
{
"questions": [
{
"id": "1",
"user_id": "1",
"city": "1",
"question": "we",
"likes": "0",
"img": "0",
"req_date": "2016-10-03 23:06:06",
"qort": "q",
"user_name": "basel",
"user_img": "0",
"comments": "$num"
},
{
"id": "2",
"user_id": "1",
"city": "1",
"question": "سي شسيبس بيس بيس",
"likes": "0",
"img": "0",
"req_date": "2016-10-03 23:30:44",
"qort": "q",
"user_name": "basel",
"user_img": "0",
"comments": "0"
},
{
"id": "3",
"user_id": "3",
"city": "2",
"question": "سي شسي2222بس بيس بيس",
"likes": "0",
"img": "0",
"req_date": "2016-10-03 23:32:06",
"qort": "q",
"user_name": "محمد السعيدي",
"user_img": "",
"comments": "0"
},
{
"id": "4",
"user_id": "1",
"city": "1",
"question": "مرحبا مرحبا تسيسي تسي ستنيم سي سني سنمي سن نسشي ىنمة",
"likes": "0",
"img": "0",
"req_date": "2016-10-03 23:32:59",
"qort": "q",
"user_name": "basel",
"user_img": "0",
"comments": "0"
},
{
"id": "5",
"user_id": "1",
"city": "1",
"question": "مرحبا مرحبا تسيسي تسي ستنيم سي سني سنمي سن نسشي ىنمة",
"likes": "0",
"img": "0",
"req_date": "2016-10-04 00:18:41",
"qort": "q",
"user_name": "basel",
"user_img": "0",
"comments": "0"
}
]
}
PHP代码：
<?php
header("Content-Type:application/json; charset=utf-8");
include_once("config.php");
class Questions
{
public $id;
public $user_id;
public $city;
public $question;
public $likes;
public $img;
public $req_date;
public $qort;
//public $user_name;
//public $user_img;
//public $comments;
//didnt help
}
function getQ (){
$sql= "select * from `questions`";
$result = mysql_query($sql);
if (mysql_num_rows($result) > 0){
$ques=array();
while ($ques_info= mysql_fetch_array($result)){
$uid = $ques_info['user_id'];
$qid = $ques_info['id'];
$info = new Questions();
$info->qort= 'q';
$info->id= $ques_info['id'];
$info->user_id=$ques_info['user_id'];
$info->city=$ques_info['city'];
$info->question=$ques_info['question'];
$info->img='0';
$info->likes=$ques_info['likes'];
$info->req_date=$ques_info['req_date'];
$sqluname = "select * from `users` where `id`='".$uid."'";
$resultuname = mysql_query($sqluname);
if (mysql_num_rows($resultuname) > 0){
while ($user_info= mysql_fetch_array($resultuname)){
$info->user_name= $user_info['name'];
$info->user_img= $user_info['img'];
}
}
$sqlcomments = "select * from `question_comments` where `question_id`='".$qid."'";
$resultcomments = mysql_query($sqlcomments );
$num = mysql_num_rows($resultcomments);
if ($num > 0){
$info->comments= '$num';
}else{
$info->comments= '0';
}
array_push($ques, $info);
}
echo json_encode(array('questions' => $ques), true);
}
}
switch ($_GET['do'])
{
case 'getQ':
{
getQ ();
}
}
我要发疯了什么不对吗？ 在android我正在使用Voelly im获取错误类型java.lang.string无法转换为JSONObject
android代码：
private void fetchPosts() {
Log.e("ir", "fetchPosts");
JsonObjectRequest postReq = new JsonObjectRequest(Request.Method.GET, url, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject jsonObject) {
try {
Log.e("ir", "onResponse");
Log.e("ir", "GONE");
JSONArray response = jsonObject.getJSONArray("questions");
for (int i = 0; i < response.length(); i++) {
JSONObject obj = response.getJSONObject(i);
qlist ads = new qlist();
ads.setQort(obj.getString("qort"));
ads.setIdquestion(obj.getString("id"));
ads.setIduser(obj.getString("user_id"));
ads.setQuestion(obj.getString("question"));
ads.setLikes(obj.getString("likes"));
ads.setComments(obj.getString("comments"));
ads.setImg(obj.getString("img"));
ads.setReq_date(obj.getString("req_date"));
ads.setUser_name(obj.getString("user_name"));
ads.setUser_img(obj.getString("user_img"));
postsList.add(ads);
Log.e("ir", "questions");
}
getManshateAd();
} catch (JSONException e) {
Log.e("ir", "JSONException");
e.printStackTrace();
}
adapter.notifyDataSetChanged();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError arg0) {
Log.e("ir", "onErrorResponse"+arg0);
}
}) {
@Override
public Request.Priority getPriority() {
return Request.Priority.IMMEDIATE;
}
};
postReq.setRetryPolicy(new DefaultRetryPolicy(50000,
DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
AppController.getInstance().addToRequestQueue(postReq);
}
提前感谢。
答案 0 :(得分：1)
检查你的respose编码。也许您的回复包含BOM符号。