Ajax调用未获得成功响应

Question

We have 2 text fields. We have tried to post user_Name and Password through an ajax call.

We have used PHP services and the username and password do save to the DB successfully.

But we do not get any response from our success or fail.

The code:

PHP:

 if(isset($_GET['ecovauserName']) && isset($_GET['ecovauserage']) ){
    $ecovauserName             = $_GET['ecovauserName'];
    $ecovauserage              = $_GET['ecovauserage'];



     $sql  = "SELECT ecovauserName,ecovauserage FROM ecovauserinfo WHERE ecovauserName = '" . $ecovauserName . "' and ecovauserage = '" . $ecovauserage . "'";
    $query      = mysql_query($sql);

    if (mysql_num_rows($query) > 0)
    {
        echo "fail to post";
    }
    else
        {  echo("Entered into DB inserting the values");

        $insert = "INSERT INTO ecovauserinfo (ecovauserName,ecovauserage)
                        VALUES ('" . $ecovauserName . "','" . $ecovauserage . "')";

        $query  = mysql_query($insert);
        echo $insert;
        if ($query)
        {
            echo "EventFile Successfully stored";
        }
            else
            {


                echo "Insert failed";
            }
        }
     }

Ajax Call:-

 $.ajax({
               url:'http://192.168.3.134:8080/ekova/postevent.php',
               type:'POST',
               data:{ecovauserName :username,ecovauserage:password},
               contentType: "application/json; charset=utf-8",
                dataType: "jsonp",
               success:function(responsive){
                alert(responsive);
               },
               error:function(w,t,f){
                 console.log(w+' '+t+' '+f);
               }
            });

The above code is working fine. The username and password are successfully stored in the DB. But we need to get a success of fail response.

My success:function is not called and so my alert box never runs to notify me of the success.

Please guide me with what is wrong in the code.

Answer 1

The data type should read "json" not "jsonp"

I would suggest that you use "text" instead of "json" since you are returning normal text results and not json encoded data.

Answer 2

You could try removing the line dataType: "jsonp" - that's had some success.

See this post: Ajax success event not working

EDIT - try putting basic console.log statements in both success and fail just to see if either are being hit.

$.ajax({
           url:'http://192.168.3.134:8080/ekova/postevent.php',
           type:'POST',
           data:{ecovauserName :username,ecovauserage:password},
           contentType: "application/json; charset=utf-8",
            dataType: "jsonp",
           success:function(){
            console.log('in success');
           },
           error:function(){
             console.log('in error');
           }
        });

Check whether you're getting an error:

error: function(xhr, status, error) {
  var error1 = eval("(" + xhr.responseText + ")");
  console.log(error1.Message);
  console.log(geturl.getAllResponseHeaders());
  alert("error!"+ geturl.getAllResponseHeaders());
}

Answer 3

Why don't you use status codes returned by the call, as an example:

$.ajax({
  url:'http://192.168.3.134:8080/ekova/postevent.php',
  type:'POST',
  data:{ecovauserName :username,ecovauserage:password},
  contentType: "application/json; charset=utf-8",
  dataType: "jsonp",
  statusCode: {
    404: function () {
      //error
    },
    200: function (data) {
      //response data
    }
  }
});

Answer 4

在你的php调用中返回一个json_encode响应，如下所示：

echo json_encode(array('status' => 'in success'));

Answer 5

You seems doing a query with cross-domain and jsonp make that possible.

So, in your php code you have to return a jsonp format :

$response = array('success' => false, 'message' => '');

if (isset($_GET['ecovauserName']) && isset($_GET['ecovauserage'])) {
    $ecovauserName = $_GET['ecovauserName'];
    $ecovauserage = $_GET['ecovauserage'];

    $sql = "SELECT ecovauserName,ecovauserage FROM ecovauserinfo WHERE ecovauserName = '" . $ecovauserName . "' and ecovauserage = '" . $ecovauserage . "'";
    $query = mysql_query($sql);

    if (mysql_num_rows($query) > 0) {
        $response['message'] = 'fail to post';
    } else {
        $insert = "INSERT INTO ecovauserinfo (ecovauserName,ecovauserage) VALUES ('" . $ecovauserName . "','" . $ecovauserage . "')";

        $query = mysql_query($insert);
        if ($query) {
            $response['message'] = 'EventFile Successfully stored';
            $response['success'] = true;
        } else {
            $response['message'] = 'Insert failed';
        }
    }
}
// The header is for telling that you are sending a json response
header('content-type: application/json; charset=utf-8');

// formatting a response as jsonp format.
echo $_GET['callback'] . '(' . json_encode($response) . ')';

In your javascript :

$.ajax({
    url: 'http://192.168.3.134:8080/ekova/postevent.php',
    type: 'POST',
    data: {ecovauserName: username, ecovauserage: password},
    contentType: "application/json; charset=utf-8",
    dataType: "jsonp",
    success: function (response) {
        alert(response.message);
    },
    error: function() {
        console.log('error');
    }
});

More information at http://www.geekality.net/2010/06/27/php-how-to-easily-provide-json-and-jsonp