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HttpException (0x80004005): 超过了最大请求长度1.Web.config中配置以下节点（基操勿六）A：<system.web><!--最大请求长度,单位为KB(千字节),默认为4M,设置为1G,上限为2G --> <httpRuntime targetFramework="4.5" maxRequestLength="1048576" executionTimeout="3600" /></system.web>

//引入命名空间 //using System.Net; //using System.IO; public string Post(string url, string msg) { string result = ""; HttpWebRequest req = (...