可能重复:
Can I set an unlimited length for maxJsonLength in web.config?
我的.aspx页面中有一个脚本,它将信息发送到后端.cs页面。在大多数情况下,概念很简单,最差,除非数据太大。如何在不修改web.config 的情况下增加“数据”变量可容纳的容量?请参阅下面的代码。
.ASPX
<script type="text/javascript">
$(document).ready(function () {
var note = "";
for (var i = 0; i < 200000; i++)
note = note + "x";
$.ajax({
type: "POST",
url: "GroupDetailsDisplayPlus.aspx/UpdateRecord",
data: "{note: \"" + note + "\"}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
var response = msg.d;
alert("success");
}
error: function (request, status, thrownError) {
//alert(request.thrownError); // short version
alert(request.responseText); // long version
}
});
});
</script>
.CS
[System.Web.Services.WebMethod]
public static string UpdateRecord(string note)
{
return note;
}
此代码已简化,我的目的是将此大字符串存储在数据库中(代码省略)。如果我将for循环设置为仅执行100,000个循环,则此方法有效。但是,将其增加到200,000个周期会失败,并显示错误消息:
{“Message”:“使用序列化或反序列化时出错 JSON JavaScriptSerializer。字符串的长度超过该值 在maxJsonLength属性上设置。\ r \ nParameter name: 输入“,”StackTrace“:at System.Web.Script.Serialization.JavaScriptSerializer.Deserialize(JavaScriptSerializer serializer,String input,Type type,Int32 depthLimit)\ r \ n at System.Web.Script.Serialization.JavaScript Serializer.Deserialize [T](String input)\ r \ n at System.Web.Script.Service.RestHandler.ExecuteWebServiceCall(HttpContext的 context,WebServiceMethodData methodData)”, “ExceptionType”: “System.ArgumentException”}
感谢您的帮助。
答案 0 :(得分:11)
试试这个:
<system.web.extensions>
<scripting>
<webServices>
<jsonSerialization maxJsonLength="500000">
</jsonSerialization>
</webServices>
</scripting>
</system.web.extensions>
和此:
<system.web>
<httpRuntime requestValidationMode="2.0" executionTimeout="600" maxRequestLength="2000000" />
<system.web>
或划分您的数据并逐个发送:
var portionIndex = 0;
var porions = new Array();
for(i = 0; i < 5; i++)
{
var note = '';
for (var j = 0; j < 40000; j++) note += "x";
portions.push(note);
}
SendPortion();
function SendPortion()
{
$.ajax({
type: "POST",
url: "GroupDetailsDisplayPlus.aspx/UpdateRecord",
data: {porionsCount: porions.length, portion: porions[portionIndex] },
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
portionIndex++;
if(portionIndex < porions.length)
SendPortion();
}
error: function (request, status, thrownError) {}
});
}