如何在ASP.NET Web应用程序中从服务器端向客户端发送大字符串 [英] How to send large string from server side to client side in ASP.NET web application

问题描述

我正在尝试从服务器向客户端发送超过300k字符的大字符串。

更少字符它工作正常但是如果我发送大数据它在GetVal的客户端给我错误（ ）

的ScriptResource.axd d = ZcwVAK_NOhic4vV9c3pDrDgVOGeXTSmbV_h4hrB4AYvCck3CzugURz2Hh_coReQTH7g2Ic1Q-zr149y9DQxensyPFeoHX0_89UV7i63FJ5OMUYEZYqd0AqrTxEX33GzUL3THCXUISUSAdnLW_M1p5h7si3pju0-GYZycWvLFRcYN_zu_LztKZOOtUeyfUR-E0& T公司= 3d0d00d7：6076 POST HTTP：//本地主机：60125 /...../ GETVAL 500（内部服务器错误）

请帮我这个



我尝试过：



Java脚本：

 PageMethods.GetVal （x，onRequestComplete，onError）; 
 

服务器端vb：

< System.Web .Services.WebMethod（）> _ 
公共共享函数GetVal（ByVal x As String）As String 
 Dim a As String 
 //逻辑使用x值从db获取值
返回
结束函数
 

解决方案

你可能超过最大响应长度：

< blockquote class =quote>

如何：在Microsoft Ajax中配置ASP.NET服务|配置JSON序列化 [ ^ ]：

maxJsonLength 指定JSON字符串的最大长度（最大UTF-8字符数） ）。默认长度为 102400 。

更改 web.config 文件中的设置以增加最大值：

 <  配置 < span class =code-keyword>>  
 <   system.web.extensions  >  
 <  脚本 >  
 <   webServices  >  
 <   jsonSerialization     maxJsonLength   =  500000  /  >  
 <  < span class =code-leadattribute> / webServices  >  
 <   / scripting  >  
 <   / system.web.extensions  >  
 <   / configuration  >  

I am trying to send large string more than 300k characters from server to client side.
for less character its works fine but if i send large data it gives me error at client side at GetVal()

ScriptResource.axd?d=ZcwVAK_NOhic4vV9c3pDrDgVOGeXTSmbV_h4hrB4AYvCck3CzugURz2Hh_coReQTH7g2Ic1Q-zr149y9DQxensyPFeoHX0_89UV7i63FJ5OMUYEZYqd0AqrTxEX33GzUL3THCXUISUSAdnLW_M1p5h7si3pju0-GYZycWvLFRcYN_zu_LztKZOOtUeyfUR-e0&t=3d0d00d7:6076 POST http://localhost:60125/...../GetVal 500 (Internal Server Error)

Please help me for this

What I have tried:

Java script:

PageMethods.GetVal(x, onRequestComplete, onError);

server side vb:

<System.Web.Services.WebMethod()> _
   Public Shared Function GetVal(ByVal x As String) As String
     Dim a As String
    //logic to get a value from db using x value
     Return a
   End Function

解决方案

You're probably exceeding the maximum response length:

How to: Configure ASP.NET Services in Microsoft Ajax | Configuring JSON Serialization[^]:

maxJsonLength Specifies the maximum length of the JSON string (the maximum number of UTF-8 characters). The default length is 102400.

Change the settings in your web.config file to increase the maximum:

<configuration>
  <system.web.extensions>
    <scripting>
      <webServices>
        <jsonSerialization maxJsonLength="500000"/>
      </webServices>
    </scripting>
  </system.web.extensions>
</configuration>

这篇关于如何在ASP.NET Web应用程序中从服务器端向客户端发送大字符串的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！