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http://msdn.microsoft.com/en-us/library/system.web.httpresponse.aspx设置httpresponse的内容体?
如何设置正文中的内容?
HTTP/1.1 400 Bad Request
Content-Type: application/json;charset=UTF-8
Cache-Control: no-store
Pragma: no-cache
{
"message":"response content example"
}