I am trying to set up a asmx service to return json inside the web method. When I view the response inside
a browser instead of returning json I get xml. I have set up my web method to return the json format.
Please find my web service below:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Script.Services;
using System.Web.Services;
namespace space_port_lander_real_app
{
/// <summary>
/// Summary description for WebService1
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
// [System.Web.Script.Services.ScriptService]
public class WebService1 : System.Web.Services.WebService
{
[WebMethod(CacheDuration = 60)]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
public string HelloWorld()
{
//string xmlstring = "<user><name>Hello World</name><password>some pass</password></user>";
//var name = $(xml).find('name').text();
//return xmlstring;
return "hello world";
}
}
}
The response output looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<string xmlns="http://tempuri.org/">hello world</string>
I set up my method to return a string. Is there something I'm missing?
If you want a GET method to return JSON, you need to set it otherwise use POST.
[ScriptMethod(UseHttpGet=true, ResponseFormat = ResponseFormat.Json)]
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I have the below code used in web services.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
namespace StringTest
{
/// <summary>
/// Summary description for StringTest
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
// [System.Web.Script.Services.ScriptService]
public class StringTest : System.Web.Services.WebService
{
[WebMethod]
public string HelloWorld(string str)
{
return str;
}
}
}
When I provide the input as Hello world, I'm getting the result as Hello world (two spaces between the words has been reduced to one). I'm referring an external web service and cannot modify any code in the method definition. How to get the result without any data manipulation?
I need to build an API using C# webservice, which needs to return values in json format.
Currently I have the following lines of code
namespace WebService1
{
/// <summary>
/// Summary description for Service1
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
// [System.Web.Script.Services.ScriptService]
public class Service1 : System.Web.Services.WebService
{
[WebMethod]
public string HelloWorld()
{
return new JavaScriptSerializer().Serialize(new { errMsg = "test" });
}
}
}
The output of this when the post method is invoked is
<?xml version="1.0" encoding="utf-8"?>
<string xmlns="http://tempuri.org/">{"errMsg":"test"}</string>
But this isn't a valid json how do I make the webservice return the json object only and not the xml headers?
Calling this webservice with header Content-Type: application/json will automatically transform the response to json and your xml will be gone.
I have an university project where I should implement a java powered website that uses web services: some that will be created as servlets and others that should be created as .NET "servlets". I created the java servlet that can be called as /loginservice/username="__________"&md5="____________". All good.
Now I must implement another service in .NET. I created a ASP.NET web service application but this type of application uses POST instead of GET. I found out that this could be changed by adding
[ScriptMethod(UseHttpGet=true)]
but the problem is that I can't pass parameters like I do in Java.
There is no way of using POST anywhere because I don't want to rewrite the code in Java.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Script.Services;
namespace t5_services
{
/// <summary>
/// Summary description for Service1
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
// [System.Web.Script.Services.ScriptService]
public class Service1 : System.Web.Services.WebService
{
[WebMethod]
public string HelloWorld()
{
return "Hello World";
}
[WebMethod]
[ScriptMethod(UseHttpGet=true)]
public string Package(String packagename, String lastname)
{
return "Hello " + packagename + ": " + lastname;
}
}
}
Here is the code in C#
If I use the browser and manually insert the values all is ok.
But I can't use the GET convention.
Thank you in advance.
I finally solve the problem by removing
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
and adding
<webServices>
<protocols>
<add name="HttpGet"/>
<add name="HttpPost"/>
</protocols>
</webServices>
to Web.config
Now I can call the service using
http://localhost:2586/Service1.asm/HelloWorld?parameter1=abc¶meter2=cde
This is an example of how I do it in WCF. I'm sure it will be very similar for your Asp.net service. If nothing else, it should point you in the right direction.
This is your function declaration in your interface file.
[OperationContract]
[WebInvoke(Method = "GET",
ResponseFormat = WebMessageFormat.Json,
BodyStyle = WebMessageBodyStyle.Wrapped,
UriTemplate = "DoWork?message={message}&message2={message2}")]
string DoWork(string message, string message2);
This goes into a class that implements that interface.
public string DoWork(string message, string message2)
{
return "foobar";
}
Your GET request would then look something like http://yoursite.com/DoWork?message=param1&message2=param2
Does this help? Sorry for the short reply, just packing up to go home.
$.ajax & passing data to .asmx webservice
I'm trying to publish my web service, i have already changed Build Action properties of .asmx file to "Compile" and Web.config to "None" but still i get following errors when im trying to rebuild solution:
Error 1 Keyword, identifier, or string expected after verbatim specifier: # \MyVirtualCartWS\MyVirtualCartWS.asmx
Error 2 A namespace cannot directly contain members such as fields or methods \MyVirtualCartWS\MyVirtualCartWS.asmx
both errors points .asmx file so here it is:
<%# WebService Language="C#" CodeBehind="MyVirtualCartWS.asmx.cs" Class="MyVirtualCartWS.MyVirtualCartWS" %>
Code behind
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Collections;
namespace MyVirtualCartWS
{
/// <summary>
/// Summary description MyVirtualCartWS
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
// [System.Web.Script.Services.ScriptService]
public class MyVirtualCartWS : System.Web.Services.WebService
{
#region Using LoggedUser
[WebMethod]
public LoggedUser AddUser(string _login, string _email, string _password)
{
LoggedUser lUser = new LoggedUser();
lUser.AddUser(_login, _email, _password);
return lUser;
}
[WebMethod]
public LoggedUser LogIn(string _login, string _password)
{
LoggedUser lUser = new LoggedUser();
lUser.LogIn(_login, _password);
return lUser;
}
#endregion
}
}
The line:
[System.Web.Script.Services.ScriptService]
should be uncomment first.
I have this web service:
using System.Web.Services;
namespace Contracts
{
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
public class Second : System.Web.Services.WebService
{
[WebMethod]
public string GetContract()
{
return "Contract 1";
}
}
}
The following WPF application can display the HTML fine:
using System.Windows;
using System.Net;
using System;
namespace TestConsume2343
{
public partial class Window1 : Window
{
public Window1()
{
InitializeComponent();
WebClient proxy = new WebClient();
proxy.DownloadStringCompleted += new DownloadStringCompletedEventHandler(proxy_DownloadStringCompleted);
proxy.DownloadStringAsync(new Uri("http://localhost:57379/Second.asmx?op=GetContract"));
Message.Text = "loading...";
}
void proxy_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
{
Message.Text = e.Result.ToString();
}
}
}
but when I replace the above line with the actual web service:
proxy.DownloadStringAsync(new Uri("http://localhost:57379/Second.asmx/GetContract"));
it gives me the error message:
The remote server returned the error (500) Internal Server Error.
Although when I look at the same URL in my browser, I see the XML text fine:
<?xml version="1.0" encoding="utf-8"?>
<string xmlns="http://tempuri.org/">Contract 1</string>
Why is it giving me the 500 error?
Turn on tracing and logging on your WCF service to see what the exception is (MSDN link) or attach the debugger with break on every exception as already suggested. .
The service returning HTTP code 500 usually means that there was an exception during request processing. If you have debugger attached to the web server and configured properly it will break on exception and you will be able to see it. Also usually the text of the exception should be included in the body of the HTTP response