2 annbnncnnd AnnBnnCnnD 于 2013.01.24 14:39 提问

JSONException错误:android客户端

java.文件,错误:int success = json.getInt(TAG_SUCCESS);

   protected String doInBackground(String... args) {
    // Building Parameters
    List<NameValuePair> params = new ArrayList<NameValuePair>();
    // getting JSON string from URL
    JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params);

    // Check your log cat for JSON reponse
    Log.d("All Products: ", json.toString());

    try {
        // Checking for SUCCESS TAG
        **int success = json.getInt(TAG_SUCCESS);**

        if (success == 1) {
            // products found
            // Getting Array of Products
            products = json.getJSONArray(TAG_PRODUCTS);
            Log.d("level1: ", "@@@@@@@@@@@@@@@@@@@@@@$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$");

            // looping through All Products
            for (int i = 0; i < products.length(); i++) {
                JSONObject c = products.getJSONObject(i);

                // Storing each json item in variable
                String id = c.getString(TAG_PID);
                String name = c.getString(TAG_NAME);
                Log.d("level2: ", "lksdjflsdjf0wrewrwje************************");
                // creating new HashMap
                HashMap<String, String> map = new HashMap<String, String>();

                // adding each child node to HashMap key => value
                map.put(TAG_PID, id);
                map.put(TAG_NAME, name);

                // adding HashList to ArrayList
                productsList.add(map);
            }
        } else {
            // no products found
            // Launch Add New product Activity
            Log.d("level3: ", "jldksffffffffffffffffffffffffffffffffffffff");
            Intent i = new Intent(getApplicationContext(),
                    NewProductActivity.class);
            // Closing all previous activities
            i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            startActivity(i);
        }
    } catch (JSONException e) {
        e.printStackTrace();
    }

    return null;
}

服务器的jsonArray如下,我已经通过jsonlint.con验证过了

     {
"tbl_user": {
    "0": {
        "id": "195",
        "email": "aru@yahoo.com",
        "password": "202cb962ac59075b964b07152d234b70",
        "fname": "aru",
        "lname": "sharma"
    },
    "1": {
        "id": "196",
        "email": "manu@yahoo.com",
        "password": "202cb962ac59075b964b07152d234b70",
        "fname": "manu",
        "lname": "sharma"
    },
    "2": {
        "id": "197",
        "email": "rishi@yahoo.com",
        "password": "202cb962ac59075b964b07152d234b70",
        "fname": "rishi",
        "lname": "sharma"
    },
    "success": 1
}
}

然后PHP代码如下:

    function getUsers() {
$sql = "select * FROM tbl_user ORDER BY fname";
try {
    $db = getConnection();
    $stmt = $db->query($sql);  
    $users = $stmt->fetchAll(PDO::FETCH_OBJ);
    $users["success"] = 1;
    $db = null;
    echo '{"tbl_user": ' . json_encode($users) . '}';

} catch(PDOException $e) {
    echo '{"error":{"text":'. $e->getMessage() .'}}'; 
}
}

请帮我解决一下,谢谢。

2个回答

ce_la_vie
ce_la_vie   2013.01.24 14:58
已采纳

试试:

PHP:

try {
$db = getConnection();
$stmt = $db->query($sql);  
$users["tbl_user"] = $stmt->fetchAll(PDO::FETCH_OBJ);
$users["success"] = 1;
$db = null;
echo json_encode($users) 

} catch(PDOException $e) {
echo '{"error":{"text":'. $e->getMessage() .'}}'; 
}

在java文件:

JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params);
int success = json.getInt(TAG_SUCCESS);
O_1001_O
O_1001_O   2013.01.24 15:01
JSONObject json = new JSONObject(result);
int success =   json.getInt(TAG_SUCCESS);

应该先获取JSON对象,然后才是值

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