设为gbk，谢谢
------解决方案--------------------------------------------------------
<system.web>
......
<globalization requestEncoding= "gb2312 " responseEncoding= "gb2312 " culture= "zh-CN " fileEncoding= "gb2312 " />
......
</system.web>
------解决方案--------------------------------------------------------
<system.web>
......
<globalization requestEncoding= "gbk " responseEncoding= "gbk " fileEncoding= "gbk " />
......
</system.web>