0

因此，当我使用正确的详细信息登录时，我的系统会给出一条带有空白消息的错误消息并且不会重定向？为什么会发生这种情况，我看不出在我的代码中如何返回空白错误？

调用它：

$("#log").click(function () {
    username = $("#user").val();
    password = $("#password").val();
    submit = $("#log").val();
    $.ajax({
        type: "POST",
        url: "",
        data: "submit=" + submit + "&username=" + username + "&password=" + password,
        success: function (response) {
            if (response == 'success') {
                //should never be called?
            } else {
                $("#error-log").remove();
                var error_msg = response;
                $("#s-log").append('<div id="error-log" class="err welcome dismissible">' + error_msg + '</div>');
            }
        }
    });
    return false;
});

检查：

if($_POST['submit']=='Login')
{
    // Checking whether the Login form has been submitted

    $err = array();
    // Will hold our errors


    if(!$_POST['username'] || !$_POST['password'])
        $err[] = 'All the fields must be filled in!';

    if(!count($err))
    {
        $_POST['username'] = mysql_real_escape_string($_POST['username']);
        $_POST['password'] = mysql_real_escape_string($_POST['password']);
        $_POST['rememberMe'] = (int)$_POST['rememberMe'];

        // Escaping all input data

        $row = mysql_fetch_assoc(mysql_query("SELECT id,usr FROM members WHERE usr='{$_POST['username']}' AND pass='".md5($_POST['password'])."'"));

        if($row['usr'])
        {
            // If everything is OK login

            $_SESSION['usr']=$row['usr'];
            $_SESSION['id'] = $row['id'];
            $_SESSION['rememberMe'] = $_POST['rememberMe'];

            // Store some data in the session

            setcookie('FRCteam3482Remember',$_POST['rememberMe']);
            header("Location: workspace/index.php");
            echo 'success';
        }
        else $err[]='Wrong username and/or password!';
    }

    if(count($err)) {
        $_SESSION['msg']['login-err'] = implode('<br />',$err);
        // Save the error messages in the session

        echo $_SESSION['msg']['login-err'];
        //php unset($_SESSION['msg']['login-err']);
        //header("Location: index.php");
    }
    exit;
}
4

2 回答 2

1 
header("Location: workspace/index.php");

An Ajax request passes data to another page (a script) which processes this data and usually returns some data. You should just echo the data that needs to be returned, not attempt a re-location. The page making the Ajax request should re-direct the current page if necessary, using JavaScript.

Also, you echo data after the header() call, so this echo'd data is probably not sent.

于 2013-06-08T02:13:29.880 回答
0

  1. 在成功函数location.reload()上，将重新加载当前页面。

  2. 另一个选项发布您要重定向的 url 字符串，并在成功后使用 var 进行重定向。

$("#log").click(function(){
    username=$("#user").val();
    password=$("#password").val();
    submit=$("#log").val();
    currentpage=$("#currentpage").val();//submit current page url or some useful info about it
    $.ajax({
        type: "POST",
        url: "",
        data: "submit="+submit+"&username="+username+"&password="+password+"&currentpage="+currentpage,
        success: function(response) {
            if(response.msg=='success') {
                window.location.href=response.url;
            }
            else {
                $("#error-log").remove();
                var error_msg = response;
                $("#s-log").append('<div id="error-log" class="err welcome dismissible">'+error_msg+'</div>');
            }
        }
    });
    return false;
});

PHP

if($_POST['submit']=='Login')
{
    // Checking whether the Login form has been submitted

    $err = array();
    // Will hold our errors


    if(!$_POST['username'] || !$_POST['password'])
        $err[] = 'All the fields must be filled in!';

    if(!count($err))
    {
        $_POST['username'] = mysql_real_escape_string($_POST['username']);
        $_POST['password'] = mysql_real_escape_string($_POST['password']);
        $_POST['rememberMe'] = (int)$_POST['rememberMe'];

        // Escaping all input data

        $row = mysql_fetch_assoc(mysql_query("SELECT id,usr FROM members WHERE usr='{$_POST['username']}' AND pass='".md5($_POST['password'])."'"));

        if($row['usr'])
        {
            // If everything is OK login

            $_SESSION['usr']=$row['usr'];
            $_SESSION['id'] = $row['id'];
            $_SESSION['rememberMe'] = $_POST['rememberMe'];

            // Store some data in the session

            setcookie('FRCteam3482Remember',$_POST['rememberMe']);
            header("Location: workspace/index.php");
            echo "{'msg':'success','url':'".$_POST['currenturl']."'}";
        }
        else $err[]='Wrong username and/or password!';
    }

    if(count($err)) {
        $_SESSION['msg']['login-err'] = implode('<br />',$err);
        // Save the error messages in the session

        echo $_SESSION['msg']['login-err'];
        //php unset($_SESSION['msg']['login-err']);
        //header("Location: index.php");
    }
    exit;
}
于 2013-06-08T02:42:30.833 回答