我有很难的问题。我有一个用户填充一些数据的页面，然后单击按钮将所有参数保存到json对象中。在本地保存数据后，用户单击另一个按钮，该按钮调用ajax方法，该方法在内部称为Web服务方法，添加在同一网站中，以将数据存储在服务器上。
我的问题是，当用户在本地保存数据并离开系统并在一段时间后返回时，它会单击第二个按钮将数据存储在服务器上。 ajax方法抛出错误（有时401和某些时候net :: ERR_CONNECTION_RESET）。但当他再次点击该按钮时，一切都成功运行。
我问过我的大四学生他现在想要退出这种情况。但我很困惑，我如何在客户端验证服务器端会话以退出用户。
通过点击第二个按钮调用的ajax方法
// symbol "$" is used to make attribute property in XML. for this symbol "$" is replaced by symbol "@" in aspx.cs file.
//this method is used to call Ajax Helper Class method.
function MethodWithComplexParameterClient(jsEmp) {
try {
var jsonText = JSON.stringify(jsEmp); //Convert javascript value to a JSON String
var rowactioncount = "0";
if ($("#ContentPlaceHolder1_RuleGeneratorRBL input")[1].checked) {
rowactioncount = $("#ContentPlaceHolder1_RowActionCountHdn").val();
}
$.ajax(
{
type: "POST",
url: "AjaxHelperWebService.asmx/MethodWithComplexParameter",
data: '{"jsonParam": ' + jsonText + ',"rowactioncount":"' + rowactioncount + '"}',
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
if (Number(msg.d) == 1) {
if ($("#ContentPlaceHolder1_RuleGeneratorRBL input")[1].checked) {
alert("Rule Uploaded Successfuly. Rule Name: " + '"' + $("#ContentPlaceHolder1_RuleNameTB").val().trim() + '.xml"');
var IsEMIProgramtype = false;
for (var i = 0; i < $("#RuleFileUL").children().length; i++) {
if (($("#RuleFileUL").children()[i].id).contains('EMI')) {
IsEMIProgramtype = true;
break;
}
}
if (IsEMIProgramtype)
alert("Scheme has been edited. Please update HDFC internal TID, RBL internal TID, SBI SKU Code if mapped with old scheme");
}
else {
var lRuleName = $("#ContentPlaceHolder1_RuleNameTB").val().trim();
var ruleNameLength = lRuleName.length;
var next_index = 50;
var madeOutRuleName = "";
for (ii = 0; ii < ruleNameLength; ii = ii + 50) {
var lSplitedRuleName = lRuleName.substring(ii, next_index);
madeOutRuleName = madeOutRuleName + lSplitedRuleName + "\n";
next_index = next_index + 50;
}
if (next_index == 50) {
alert("Rule Created Successfuly. Rule Name: " + '"' + lRuleName + '.xml"');
}
else {
alert("Rule Created Successfuly. Rule Name: " + '"' + madeOutRuleName + '.xml"');
}
}
$("#RuleFileUL").empty();
$("#ContentPlaceHolder1_RuleFileLblTB").val("Rule");
document.getElementById('ContentPlaceHolder1_RuleFileLblTB').style.height = "15px";
document.getElementById('ContentPlaceHolder1_ParamHeaderLbl').style.display = 'none';
document.getElementById('ContentPlaceHolder1_DefaultParamTable').style.display = 'none';
document.getElementById("ContentPlaceHolder1_RulePropertyTable").style.display = "none";
document.getElementById("ContentPlaceHolder1_ValocityCheckTbl").style.display = "none";
$("#ContentPlaceHolder1_ExistingSchemaSuggestTB").val("");
document.getElementById("ContentPlaceHolder1_ExistingSchemaTbl").style.display = "none";
document.getElementById("ContentPlaceHolder1_SchemaPropertiesSaveBtnTbl").style.display = "none";
$("#ContentPlaceHolder1_RuleNameTB").val("");
$("#RuleStartHrDTPickerTB").val("");
$("#RuleEndHrDTPickerTB").val("");
Object.keys(ProgramTypeObjHT).forEach(function (key) {
delete ProgramTypeObjHT[key];
});
Object.keys(SchemaObjHT).forEach(function (key) {
delete SchemaObjHT[key];
});
Object.keys(EMIObjHT).forEach(function (key) {
delete EMIObjHT[key];
});
Object.keys(DefaultPTParams).forEach(function (key) {
delete DefaultPTParams[key];
});
Object.keys(SchemaParams).forEach(function (key) {
delete SchemaParams[key];
});
Object.keys(EMIParamsHT).forEach(function (key) {
delete EMIParamsHT[key];
});
}
else if (msg.d == "2") {
alert("Rule Generation Failed.");
}
else if (msg.d == "4") {
$("#ContentPlaceHolder1_RuleNameTB").val("");
alert("Rule Name Already Exists, Please Enter Different Rule Name.");
$("#ContentPlaceHolder1_RuleNameTB").focus();
}
else if (msg.d == "5") {
alert("Duplicate Schema Name Found. Please Check Schema Names.");
}
else if (msg.d == "6") {
alert("Rule Is Updated By Someone Else. Please Refresh.");
}
else {
alert("Exception Occurred.");
}
},
error: function ( x, e) {
debugger;
if (x.status == 401) {
alert("The call to the server side failed. due to unauthorised access. " + x.status);
CreateXMLBtnClientClick();
}
else {
alert("The call to the server side failed. " + x.responseText);
console.log(x, e);
console.log(x.responseText);
console.log(x.status);
console.log(e);
[![enter image description here][1]][1] }
}
}
);
return false;
}
catch (err) {
alert(err);
}
}
答案 0 :(得分：1)
\s
好吧，抓住这个错误，如果它发生重定向到注销页面。非常简单，当你发现AJAX错误时，你可以这样做：
The ajax method throws error或其他什么。见这里：Window.location.href and Window.open () methods in JavaScript
您没有发布足够的信息以获得更具体的帮助。