Question

我有一个全局的ajax错误处理程序，即使xhr.status为200，xhr.statusText为“OK”并且xhr.responseText是我的JSON字符串，它仍会运行。这在firefox和IE中发生。

$.ajax({
    data: {
        method: "getRequestDetails",
        loggedInUsername: loggedInUsername,
        search: search
    },
    success: function(data){
        var arrayObject = eval("(" + data + ")")['DATA'];
        if (arrayObject.length == 0){
            alert("That search term returned no results");
        } else {
            callBeforeShow("Results");
            $.each(arrayObject, function(index, value){
                showJSON(value, "Results");
            });
            callAfterShow("Results");
        }
    }
});

$(document).ajaxError(function(event, XMLHttpRequest, ajaxOptions, thrownError){
    var errorMessage = "Ajax Error\n";
    errorMessage += "Type: " + ajaxOptions.type + "\n";
    errorMessage += "Requesting Page: " + ajaxOptions.url + "\n";
    errorMessage += "Status: " + XMLHttpRequest.status + " - " + XMLHttpRequest.statusText + "\n";
    errorMessage += "Error Thrown: " + thrownError
    alert(errorMessage);
});

在IE中，这表示XMLHttpRequest尚未就绪，而在Firefox中则返回

“AJAX错误” “类型：POST” “请求页面：something.CFC” “状态：200 - 好” “错误抛出：未定义”

所以我的工作是使用

$(document).ajaxComplete(function(event, XMLHttpRequest, ajaxOptions, errorThrown){
    if (XMLHttpRequest.status != 200){
        var errorMessage = "Ajax Error\n";
        errorMessage += "Type: " + ajaxOptions.type + "\n";
        errorMessage += "Requesting Page: " + ajaxOptions.url + "\n";
        errorMessage += "Status: " + XMLHttpRequest.status + " - " + XMLHttpRequest.statusText;
        alert(errorMessage);
    }
});

修改 * 这只发生在某些场合。它大部分时间都有效，但有时会运行$ .ajaxError（） * 的 EIDT

{"COLUMNS":["ID","SUMMARY_SPEC","TOTAL_EFFORT","EFFORT_HISTORY","LOG_HISTORY"],"DATA":[[816,"test only","2 Minutes - Last Updated: 09\/12\/2010",{"COLUMNS":["CC_ID","RECORD_ID","USER_ID","USER_NAME","EFFORT_DATE","EFFORT_DAYS","EFFORT_HRS","EFFORT_MINS","EFFORT_TOT_HRS"],"DATA":[[816,496,"ruhlet","Tim Ruhle","December, 09 2010 00:00:00",0,0,1,0.0167],[816,497,"ruhlet","Tim Ruhle","December, 08 2010 00:00:00",0,0,1,0.0167]]},{"COLUMNS":["CC_ID","RECORD_ID","USER_ID","USER_NAME","LOG_DT","LOG_ENTRY"],"DATA":[]}]]}{"COLUMNS":["ID","SUMMARY_SPEC","TOTAL_EFFORT","EFFORT_HISTORY","LOG_HISTORY"],"DATA":[[816,"test only","2 Minutes - Last Updated: 09\/12\/2010",{"COLUMNS":["CC_ID","RECORD_ID","USER_ID","USER_NAME","EFFORT_DATE","EFFORT_DAYS","EFFORT_HRS","EFFORT_MINS","EFFORT_TOT_HRS"],"DATA":[[816,496,"ruhlet","Tim Ruhle","December, 09 2010 00:00:00",0,0,1,0.0167],[816,497,"ruhlet","Tim Ruhle","December, 08 2010 00:00:00",0,0,1,0.0167]]},{"COLUMNS":["CC_ID","RECORD_ID","USER_ID","USER_NAME","LOG_DT","LOG_ENTRY"],"DATA":[]}]]}{"COLUMNS":["ID","SUMMARY_SPEC","TOTAL_EFFORT","EFFORT_HISTORY","LOG_HISTORY"],"DATA":[[816,"test only","2 Minutes - Last Updated: 09\/12\/2010",{"COLUMNS":["CC_ID","RECORD_ID","USER_ID","USER_NAME","EFFORT_DATE","EFFORT_DAYS","EFFORT_HRS","EFFORT_MINS","EFFORT_TOT_HRS"],"DATA":[[816,496,"ruhlet","Tim Ruhle","December, 09 2010 00:00:00",0,0,1,0.0167],[816,497,"ruhlet","Tim Ruhle","December, 08 2010 00:00:00",0,0,1,0.0167]]},{"COLUMNS":["CC_ID","RECORD_ID","USER_ID","USER_NAME","LOG_DT","LOG_ENTRY"],"DATA":[]}]]}

最新版本的firebug将其识别为json。

Answer 1

首先，我强烈建议放弃eval部分，转而使用$ .parseJson或自动处理解析的dataType:'json' ajax选项（出于性能和安全等原因））。如果你继续使用eval，至少要把它包起来试试。

我不完全确定调用ajaxError的所有情况，但我怀疑（基于错误的“随机性”）它与成功函数内部的错误有关（如eval在您的回复中收到无效的javascript。这可以解释为什么即使有200响应它也会被调用。

tldr：从eval回调中获取success，并在发生此错误时声明您的响应实际上是有效的json。

Answer 2

可能是因为您没有告诉$.ajax您希望从服务器返回JSON吗？尝试将dataType选项设置为'json'：

$.ajax({
    dataType: 'json',
    data: { ...

Answer 3

当我将json复制并粘贴到此格式化程序/验证程序http://jsonformatter.curiousconcept.com/

时出现两个错误

} {。

之间缺少2个逗号

Answer 4

啊，经过几天的搜索，我在$ .ajaxSetup（）中注释掉了不同的设置。结果是我设置了超时。如果只有更好的错误消息给出。感谢所有的帮助，如果没有你，就不会在这里。你们都起床了!!!

jQuery $ .ajaxError（）在200上运行 - 好的

4 个答案: