字符串的长度超过maxJsonLength属性上设置的值

Question

我有一个.Net Web服务(.asmx),它将一个Json字符串返回给我的客户端.但是,我的一些数据非常大,偶尔会出现此错误.

字符串的长度超过maxJsonLength属性上设置的值.

我已将maxJsonLength属性更改为2147483644,但它仍然无效.请帮忙......谢谢.

 <system.web.extensions>
    <scripting>
      <webServices>
        <jsonSerialization maxJsonLength="2147483644"/>
      </webServices>
    </scripting>
  </system.web.extensions>



[WebMethod]
        [ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
        public void GetData(string login)
        {
            // throw an error on this line...
            string result = new JavaScriptSerializer().Serialize(service.GetData(login));


            Context.Response.Write(result);
        }

Answer 1

感谢Ed Gibbs和@NextInLine的建议.我做了如下修复,它现在就像一个魅力.我还从web.config中删除了"system.web.extensions"部分

[WebMethod]
        [ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
        public void GetData(string login)
        {

            // when the amount of data return is huge
            var serializer = new JavaScriptSerializer();

            // we need to do this.
            serializer.MaxJsonLength = Int32.MaxValue;


            var result = serializer.Serialize(service.GetData(login));


            Context.Response.Write(result);
        }