森老頭的瘋狂世界

之前在第一篇有提到 PageMethods 非同步機制的預設傳輸模式為：
使用 HTTP POST 命令呼叫，而且回應將序列化為 JSON。

如下：
Request
POST /Demo_02.aspx/GetServerTime HTTP/1.1 Accept: */* Accept-Language: zh-tw Referer: http://localhost.:51054/Demo_02.aspx Content-Type: application/json; charset=utf-8 UA-CPU: x86 Accept-Encoding: gzip, deflate User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; GTB5; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729) Host: localhost.:51054 Content-Length: 23 Connection: Keep-Alive Pragma: no-cache {"format":"yyyy/MM/dd"}

Response
HTTP/1.1 200 OK Server: ASP.NET Development Server/9.0.0.0 Date: Tue, 20 Jan 2009 09:19:23 GMT X-AspNet-Version: 2.0.50727 Cache-Control: private, max-age=0 Content-Type: application/json; charset=utf-8 Content-Length: 18 Connection: Close {"d":"2009/01/20"}

 

但如果想改變預設的傳輸方式可以加上另一個屬性：System.Web.Script.Services.ScriptMethod
PS:也適用於 Web Service

C# Code
//代表使用 HTTP GET 方式呼叫，傳回 XML 格式，且將型別序列化為 XML 標記 [System.Web.Services.WebMethod] [System.Web.Script.Services.ScriptMethod(UseHttpGet=true, ResponseFormat=System.Web.Script.Services.ResponseFormat.Xml, XmlSerializeString=true)] public static string GetServerTime(string format) { return DateTime.Now.ToString(format); }

Request
GET /Demo_02.aspx/GetServerTime?format=%22yyyy%2FMM%2Fdd%22 HTTP/1.1 Accept: */* Accept-Language: zh-tw Referer: http://localhost.:51054/Demo_02.aspx Content-Type: application/json; charset=utf-8 UA-CPU: x86 Accept-Encoding: gzip, deflate User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; GTB5; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729) Host: localhost.:51054 Connection: Keep-Alive

Response
HTTP/1.1 200 OK Server: ASP.NET Development Server/9.0.0.0 Date: Tue, 20 Jan 2009 09:27:08 GMT X-AspNet-Version: 2.0.50727 Cache-Control: private, max-age=0 Content-Type: text/xml; charset=utf-8 Content-Length: 65 Connection: Close <?xml version="1.0" encoding="utf-8"?><string>2009/01/20</string>