[英]Asp.net web service returning xml instead of json to browser using http
[英]ASP.NET WebService mistakenly returning XML instead of JSON only when using Http Get but web.config is set up right
症状:当我发出Web服务请求时(从使用.ajax的JQuery到ASP.NET .asmx文件),如果是使用GET而不是POST,则.asmx文件始终返回XML而不是JSON。 如果我将回拨转回帖子,它会像JSON一样响应。
目标:如何使用HTTP GET获取JSON而不是XML?
我已经有了相当多的谷歌搜索,这不是通常的嫌疑人,如缺少ScriptService或没有在web.config中注册处理程序。 它的行为就像脚本处理程序工厂只处理帖子? 请帮助我指出正确的方向!
服务器代码:
namespace mynamespace
{
/// <summary>
/// Summary description for ServiceAddresses
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ToolboxItem(false)]
[System.Web.Script.Services.ScriptService]
public class MyService : System.Web.Services.WebService
{
[WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json, UseHttpGet = true)]
public string HelloWorld()
{
return "Hello World at " + DateTime.Now.ToLongTimeString();
}
}
}
客户代码:
function testhelloworld(postorget) {
var webMethod = '/servicedir/MyService.asmx/HelloWorld';
$.ajax({
type: ('GET'===postorget)?'GET':'POST',
url: webMethod,
contentType: 'application/json; charset=utf-8',
dataType: 'json',
data: "{}",
success: function(msg) {
$('#info').text(msg.d);
},
error: function(xhr, ajaxOptions, thrownError) {
$('#info').text('Error: ' + xhr.responseText);
}
});
}
如果切换服务UseHttpGet =虚假和客户端请求的POST工作正常 。 如果我使用GET,则返回XML。
Fiddler说请求是:
GET http://myserver/servicedir/MyService.asmx/HelloWorld?{} HTTP/1.1
Host: myserver
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.9) Gecko/20100824 Firefox/3.6.9 ( .NET CLR 3.5.30729)
Accept: application/json, text/javascript, */*
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
X-Requested-With: XMLHttpRequest
Referer: http://myserver/test/index.aspx
响应:
HTTP/1.1 200 OK
Server: Microsoft-IIS/5.1
Date: Thu, 14 Oct 2010 00:31:44 GMT
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private, max-age=0
Content-Type: text/xml; charset=utf-8
Content-Length: 115
<?xml version="1.0" encoding="utf-8"?>
<string xmlns="http://tempuri.org/">Hello World at 8:31:44 PM</string>
web.config的相关部分:
<webServices>
<protocols>
<add name="HttpGet"></add>
<add name="HttpPost"></add>
</protocols>
</webServices>
. . .
<remove verb="*" path="*.asmx"/>
<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
. . .
<remove name="ScriptHandlerFactory"/>
<remove name="ScriptHandlerFactoryAppServices"/>
<add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
同样的事情,但使用UseHttpGet = false重新编译并通过POST请求工作。
Fiddler说POST请求是:
POST http://myserver/servicedir/MyService.asmx/HelloWorld HTTP/1.1
Host: myserver
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.9) Gecko/20100824 Firefox/3.6.9 ( .NET CLR 3.5.30729)
Accept: application/json, text/javascript, */*
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Content-Type: application/json; charset=utf-8
X-Requested-With: XMLHttpRequest
Referer: http://myserver/test/index.aspx
Content-Length: 2
Pragma: no-cache
Cache-Control: no-cache
{}
响应:
HTTP/1.1 200 OK
Server: Microsoft-IIS/5.1
Date: Thu, 14 Oct 2010 00:37:03 GMT
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private, max-age=0
Content-Type: application/json; charset=utf-8
Content-Length: 33
{"d":"Hello World at 8:37:03 PM"}
先发制人地回答非答案:
我想使用GET,因为我希望客户端能够缓存。
我知道有一些安全问题,例如发布在scott gu的博客上。
我知道我不能使用ASP.NET的脚本,只是自己动手,或试试Jayrock。 但是,我想了解为什么库存ASP.NET ScriptHandler不起作用。
不确定asmx Web服务,但我们使用WCF并且它在该方法上使用这些属性
[WebGet(RequestFormat = WebMessageFormat.Json,
ResponseFormat = WebMessageFormat.Json]
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.