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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Tutorial - Creating a Hello World ServiceStack Web Service</title>
<style type="text/css">
BODY
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</head>
<body>
<a href="http://www.servicestack.net" style="display:block;position:absolute;top:5px;left:10px;"><img src="http://servicestack.net/icon-home.jpg" alt="ServiceStack Home" /></a>
<div id="header-links">
<a href="../ServiceStack.Hello/">Hello World</a>
<a href="../Backbone.Todos/">Todos</a>
<a href="../RedisStackOverflow/">Redis StackOverflow</a>
<a href="../RestFiles/">REST Files</a>
<a href="../ServiceStack.MovieRest/">REST Movies</a>
<a href="../ServiceStack.Northwind/">Northwind Database</a>
<a href="../ServiceStack.Examples.Clients/">Ajax Client</a>
<a href="../ServiceStack.Examples.Clients/Soap12.aspx">Soap 1.2</a>
</div>
<a class="lnk-src" href="https://github.com/ServiceStack/ServiceStack"><img src="img/btn-github.png" width="186" height="84" /></a>
<h1 class="title">Creating a Web service from scratch with Service Stack</h1>
<p>
This tutorial will go through and develop and call a simple Hello world Web Service
from scratch using <a href="http://www.servicestack.net">Service Stack</a> and VS.NET.
</p>
<a name="nuget"></a>
<h2>Installing via NuGet</h2>
<p>
If you have NuGet you can skip steps 1 - 3 below by installing one of the NuGet Host packages below:
</p>
<h3>
Install ServiceStack Only at root path <b style="font-size: 20px; line-height:20px">/</b>
</h3>
<p>
Create an empty ASP.NET Web Application and
</p>
<div class="nuget-badge">
<p>
<pre>PM> Install-Package ServiceStack.Host.AspNet</pre>
</p>
</div>
<h3>
Install ServiceStack Side-by-Side with ASP.NET MVC at custom path <b style="font-size: 20px; line-height:20px">/api</b>
</h3>
<p>
Create an empty ASP.NET MVC Web Application and
</p>
<div class="nuget-badge">
<p>
<pre>PM> Install-Package ServiceStack.Host.Mvc</pre>
</p>
</div>
<h3>Completing the NuGet Installation</h3>
<p>
The NuGet package provides an AppHost template in your project at <b>App_Start\AppHost.cs</b> and some <b>App_Start\WebServiceExamples.cs</b> to get you started.
</p>
<p>
After looking at the <b>README.txt</b> - <b>Skip the Manual Installation instructions below</b> and start exploring ServiceStack features at:
</p>
<p>
<h3><a href="#view-webservice">Viewing your Web Service >></a></h3>
</p>
<a name="manual"></a>
<h2>Install Manually - 1. Creating your application</h2>
<p>
Create a new ASP.NET Web Application by going into Visual Studio
and selecting <strong>File -> New -> Project</strong> on the File menu.
</p>
<p><img src="img/NewProject.png" alt="New ASP.NET Project" width="776" height="552" /></p>
<h2>2. Configuring Service Stack to run in your application</h2>
<p>
Add a reference to the <a href="https://github.com/ServiceStack/ServiceStack/downloads">latest ServiceStack.dll's</a>
(or <a href="http://nuget.org/packages/ServiceStack">add ServiceStack dlls using NuGet</a>)
to your project:
</p>
<p>
There are 2 supported options available to register ServiceStack in your ASP.NET application <strong>Web.config</strong>:
</p>
<h3 class="hr"><a name="rootpath"></a>a) You do not require an existing Web Framework - Host from the root path: <b>/</b></h3>
<p>
You can host at the root path <b>/</b> when you don't need to use an existing Web Framework with your ServiceStack web services (i.e. project only has static files)
</p>
<h4>The configuration below allows you to host your webservices from the root path: <b>/</b></h4>
<code class="web-config"><system.web>
<httpHandlers>
<add path="*" type="ServiceStack.WebHost.Endpoints.ServiceStackHttpHandlerFactory, ServiceStack" verb="*"/>
</httpHandlers>
</system.web>
<!-- Required for IIS 7.0 -->
<system.webServer>
<handlers>
<add path="*" name="ServiceStack.Factory" type="ServiceStack.WebHost.Endpoints.ServiceStackHttpHandlerFactory, ServiceStack" verb="*" preCondition="integratedMode" resourceType="Unspecified" allowPathInfo="true" />
</handlers>
</system.webServer>
</code>
<h3 class="hr"><a name="custompath"></a> b) You want to use ServiceStack with an existing Web Framework - Host web services at: <b>/custompath</b></h3>
<p>
In order to avoid conflicts with your existing ASP.NET web framework it is recommended to host your ServiceStack web services at a custom path.<br />
This will allow you to use ServiceStack together with an existing web framework
e.g. <a href="http://www.asp.net/mvc">ASP.NET MVC 3</a> or <a href="http://code.google.com/p/fubumvc/">FUBU MVC</a>, etc.
</p>
<h4>The location configuration below hosts your webservices at custom path: <b>/servicestack</b></h4>
<code class="web-config"><location path="servicestack">
<system.web>
<httpHandlers>
<add path="*" type="ServiceStack.WebHost.Endpoints.ServiceStackHttpHandlerFactory, ServiceStack" verb="*"/>
</httpHandlers>
</system.web>
<!-- Required for IIS 7.0 -->
<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
<validation validateIntegratedModeConfiguration="false" />
<handlers>
<add path="*" name="ServiceStack.Factory" type="ServiceStack.WebHost.Endpoints.ServiceStackHttpHandlerFactory, ServiceStack" verb="*" preCondition="integratedMode" resourceType="Unspecified" allowPathInfo="true" />
</handlers>
</system.webServer>
</location>
<!-- Required for MONO -->
<system.web>
<httpHandlers>
<add path="servicestack*" type="ServiceStack.WebHost.Endpoints.ServiceStackHttpHandlerFactory, ServiceStack" verb="*"/>
</httpHandlers>
</system.web>
<system.webServer>
<validation validateIntegratedModeConfiguration="false" />
</system.webServer>
</code>
<p>
Note: due to limitations in IIS 6 - the <b>/custompath</b> must end with <b>.ashx</b>, e.g: <b>path="servicestack.ashx"</b>
</p>
<p>
To avoid conflicts with ASP.NET MVC add ignore rule in Global.asax RegisterRoutes method e.g: <b>routes.IgnoreRoute ("servicestack/{*pathInfo}");</b>
</p>
<a name="create"></a>
<h2>3. Creating your first Web Service</h2>
<p>
For simplicity we will add the Web Service and the start up script all in the same Global.asax.cs.
To do this Right-click on your project and go <br />
<strong>Add -> New Item</strong> then select the <strong>Global Application class</strong>.
</p>
<p>
Within the same file add the following code:
</p>
<h4>1. Create the name of your Web Service (i.e. the Request DTO)</h4>
<code class="csharp">public class Hello
{
public string Name { get; set; }
}
</code>
<h4>2. Define what your Web Service will return (i.e. Response DTO)</h4>
<code class="csharp">public class HelloResponse
{
public string Result { get; set; }
}
</code>
<h4>3. Create your Web Service implementation</h4>
<code class="csharp">public class HelloService : IService<Hello>
{
public object Execute(Hello request)
{
return new HelloResponse { Result = "Hello, " + request.Name };
}
}
</code>
<h3>Registering your web services and starting your application</h3>
The final step is to Configure setup to tell Service Stack where to find your web services:
<a name="AppHost"></a>
<h4>Web Service AppHost Singleton</h4>
<code class="csharp">public class Global : System.Web.HttpApplication
{
public class HelloAppHost : AppHostBase
{
//Tell Service Stack the name of your application and where to find your web services
public HelloAppHost() : base("Hello Web Services", typeof(HelloService).Assembly) { }
public override void Configure(Container container)
{
//register user-defined REST-ful urls
Routes
.Add<Hello>("/hello")
.Add<Hello>("/hello/{Name}");
}
}
//Initialize your application singleton
protected void Application_Start(object sender, EventArgs e)
{
new HelloAppHost().Init();
}
}
</code>
<p>
Done! You now have a working application :)
</p>
<a name="view-webservice"></a>
<h1>Viewing your Web Services</h1>
<p>
Now that you have a working Web Service lets see what ServiceStack does for you out of the box:
</p>
<h4>The Web Service Index Metadata page</h4>
<p>
If everything is configured correctly you can go to the
<strong><a href="servicestack/metadata">/servicestack/metadata</a></strong>
to see a list of your web services and the various end points its available on.
</p>
<p><img src="img/MetadataIndex.png" alt="Service Stack Metadata page" width="747" height="647" /></p>
<p>
The <b>Metadata</b> page contains:
<ul>
<li>
A list of all your webservices and the endpoints they are available on.
</li>
<li>
A list of coding examples showing you how to call each endpoing a number of different ways.
</li>
<li>
Links to all the XSD types used by your web services
</li>
<li>
Links to the web services SOAP 1.1 / 1.2 WSDLs
</li>
</ul>
</p>
<h2>The different ways of calling your Web Service</h2>
<p>
Without any configuration required, your web services are callable
via the following endpoints, formats and calling convetions.
</p>
<div class="endpoints">
<h3>XML (<acronym title="Plain old XML">POX</acronym>), JSON, JSV, CSV urls</h3>
<h4>
/servicestack/<b>[xml<i>|</i>json<i>|</i>html<i>|</i>jsv<i>|</i>csv]</b>/<b>[syncreply<i>|</i>asynconeway]</b>/<b>[servicename]</b>
</h4>
<h3>SOAP Web Service urls</h3>
<h4>
/servicestack/<b>[soap11<i>|</i>soap12]</b>
</h4>
<h3>User defined REST-ful urls</h3>
<p>
Accessible via any REST-ful urls defined using the [RestService] Attribute. e.g. in this case:
</p>
<h4>
/servicestack/<b>hello/<i>{Name}</i></b>
</h4>
</div>
<a name="predefinedroutes"></a>
<h2>XML, JSON,
<a href="https://github.com/ServiceStack/ServiceStack/wiki/HTML5ReportFormat">HTML5</a>,
<a href="https://github.com/ServiceStack/ServiceStack.Text/wiki/JSV-Format">JSV</a>,
<a href="https://github.com/ServiceStack/ServiceStack/wiki/ServiceStack-CSV-Format">CSV</a>
Web Services via HTTP GET or POST</h2>
<table>
<thead>
<tr>
<th>
CONTENT TYPE
</th>
<th>
HTTP GET
</th>
<th>
HTTP POST CONTENT TYPE
</th>
<th>
HTTP POST FORM DATA
</th>
</tr>
</thead>
<tbody>
<tr>
<th>
XML
</th>
<td>
<a href="servicestack/xml/syncreply/Hello?Name=World">/servicestack/xml/syncreply/Hello?Name=World</a>
</td>
<td>
<a href="servicestack/xml/metadata?op=Hello">/servicestack/xml/syncreply/Hello</a>
</td>
<td>
<form action="servicestack/xml/syncreply/Hello" method="post">
<label>Name:</label>
<input type="text" name="Name" value="World!" />
<input type="submit" />
</form>
</td>
</tr>
<tr>
<th>
JSON
</th>
<td>
<a href="servicestack/json/syncreply/Hello?Name=World">/servicestack/json/syncreply/Hello?Name=World</a>
</td>
<td>
<a href="servicestack/json/metadata?op=Hello">/servicestack/json/syncreply/Hello</a>
</td>
<td>
<form action="servicestack/json/syncreply/Hello" method="post">
<label>Name:</label>
<input type="text" name="Name" value="World!" />
<input type="submit" />
</form>
</td>
</tr>
<tr>
<th>
HTML
</th>
<td>
<a href="servicestack/html/syncreply/Hello?Name=World">/servicestack/html/syncreply/Hello?Name=World</a>
</td>
<td>
<a href="servicestack/html/metadata?op=Hello">/servicestack/html/syncreply/Hello</a>
</td>
<td>
<form action="servicestack/html/syncreply/Hello" method="post">
<label>Name:</label>
<input type="text" name="Name" value="World!" />
<input type="submit" />
</form>
</td>
</tr>
<tr>
<th>
JSV
</th>
<td>
<a href="servicestack/jsv/syncreply/Hello?Name=World">/servicestack/jsv/syncreply/Hello?Name=World</a>
</td>
<td>
<a href="servicestack/jsv/metadata?op=Hello">/servicestack/jsv/syncreply/Hello</a>
</td>
<td>
<form action="servicestack/jsv/syncreply/Hello" method="post">
<label>Name:</label>
<input type="text" name="Name" value="World!" />
<input type="submit" />
</form>
</td>
</tr>
<tr>
<th>
CSV
</th>
<td>
<a href="servicestack/csv/syncreply/Hello?Name=World">/servicestack/csv/syncreply/Hello?Name=World</a>
</td>
<td>
<a href="servicestack/csv/metadata?op=Hello">/servicestack/csv/syncreply/Hello</a>
</td>
<td>
<form action="servicestack/csv/syncreply/Hello" method="post">
<label>Name:</label>
<input type="text" name="Name" value="World!" />
<input type="submit" />
</form>
</td>
</tr>
</tbody>
</table>
<h4>CONTENT TYPE</h4>
<p>
The endpoint type and resulting serialization format of your web service.
</p>
<h4>HTTP GET</h4>
<p>
The url to call your web service using only the url and the query string to populate the request.<br />
</p>
<p>
<em>
NOTE: Service Stack also lets you submit any arbitary complex type
(using <a href="https://github.com/ServiceStack/ServiceStack.Text/wiki/JSV-Format">JSV format</a>)
via the query string or form data:
<a href="http://www.servicestack.net/ServiceStack.Examples.Host.Web/ServiceStack/Json/SyncReply/StoreLogs?Loggers=[{Id:786,Devices:[{Id:5955,Type:Panel,TimeStamp:1199303309,Channels:[{Name:Temperature,Value:58},{Name:Status,Value:On}]},{Id:5956,Type:Tank,TimeStamp:1199303309,Channels:[{Name:Volume,Value:10035},{Name:Status,Value:Full}]}]}]">see this example</a>.
</em>
</p>
<h4>HTTP POST CONTENT TYPE</h4>
<p>
You can HTTP POST the 'Content Type' representation of the Request DTO to the same url.
Check the links to the metadata page for examples of this.
</p>
<h4>HTTP POST FORM DATA</h4>
<p>
As an alternative to posting the Content Type, each service also accepts
<strong>x-www-form-urlencoded</strong> Content-Types allowing you to call each web service
using a HTML FORM. Here is the HTML for the live examples:
</p>
<code class="html"><form action="servicestack/xml/syncreply/Hello" method="post">
<label>Name:</label>
<input type="text" name="Name" value="World!">
<input type="submit">
</form>
</code>
<h2>SOAP Web Services</h2>
<table>
<thead>
<tr>
<th>SOAP VERSION</th>
<th>WSDL + END POINTS</th>
<th>SOAP EXAMPLE</th>
</tr>
</thead>
<tbody>
<tr>
<th>SOAP 1.1</th>
<td><a href="servicestack/soap11">/servicestack/soap11</a></td>
<td><a href="servicestack/soap11/metadata?op=Hello">soap11/metadata?op=Hello</a></td>
</tr>
<tr>
<th>SOAP 1.2</th>
<td><a href="servicestack/soap12">/servicestack/soap12</a></td>
<td><a href="servicestack/soap12/metadata?op=Hello">soap12/metadata?op=Hello</a></td>
</tr>
</tbody>
</table>
<h4>WSDL + END POINTS</h4>
<p>
A <b>HTTP GET</b> on the url returns the <b>WSDL</b>, while <b>HTTP POST</b>-ing a SOAP Request calls the web service.
</p>
<h4>SOAP EXAMPLE</h4>
<p>
Shows example of what a SOAP Request looks like.
</p>
<a name="customroutes"></a>
<h2>REST Web Services</h2>
<p>
A new addition to Service Stack is the ability to define your own custom urls letting you
expose your web services via REST-ful urls.
</p>
<p>
Defining user-defined REST-ful urls can be done in one of two ways:
<ul>
<li>Using the MVC-like <b>Routes</b> config property in your <a href="#AppHost"><b>AppHost</b></a></li>
<li>Using the <b>[RestService]</b> Attribute on your Request DTOs</li>
</ul>
</p>
<p>e.g: the following mapping:</p>
<h4><b>[RestService("/hello/{Name}")]</b></h4>
<p>
Allows this web service to be called with:
<a href="servicestack/hello/World!?format=json">/servicestack/hello/World!</a>
</p>
<p>
Just like the other endpoints, REST-ful urls can also be called with a HTML FORM POST.
However in this case we need to define another mapping so it matches the url that we want, i.e.
</p>
<h4><b>[RestService("/hello")]</b></h4>
<p>
Which lets us now call this web service using the following HTML:
</p>
<code class="html"><form action="servicestack/hello" method="post">
<label>Name:</label>
<input type="text" name="Name" value="World!">
<input type="submit">
</form>
</code>
<p>
Example:<br />
<form action="servicestack/hello?format=json" method="post">
<label>Name:</label>
<input type="text" name="Name" value="World!" />
<input type="submit" />
</form>
</p>
<p>
This makes it very easy to Ajax-ify your existing HTML forms, cleanly,
without messy configuration and generated code mandated by other options.
</p>
<a name="clients"></a>
<h2>Calling Web Services from Code</h2>
<p>
Using DTOs to define your web service interface makes it possible to provide strong-typed generic service clients without any code-gen or extra build-steps,
leading to a productive end-to-end type-safe communication gateway from client to server.
</p>
<p>
All REST and ServiceClients share the same interfaces so they can easily be replaced (for increased perf/debuggability/etc) with a single line of code as seen in the
<a href="https://github.com/ServiceStack/ServiceStack/blob/master/tests/ServiceStack.WebHost.IntegrationTests/Tests/HelloWorldServiceClientTests.cs">Hello Service Integration tests</a>.
</p>
<p>
C#/.NET Clients can call the above Hello Service using any of the
<a href="https://github.com/ServiceStack/ServiceStack/blob/master/src/ServiceStack.Common/ServiceClient.Web/">JSON, JSV, XML or SOAP Service Clients</a>
with the code below:
</p>
<code class="csharp">var response = client.Send<HelloResponse>(new Hello { Name = "World!" });
Console.WriteLine(response.Result); // => Hello, World
</code>
<h4>Async Example</h4>
<code class="csharp">client.SendAsync<HelloResponse>(new Hello { Name = "World!" },
r => Console.WriteLine(r.Result), (r, ex) => { throw ex; });
</code>
<p>
The Service Clients use the automatic <a href="#predefinedroutes">Pre-Defined Routes above</a>.
</p>
<p>
In addition, the Service Clients also provide HTTP Verbs (Get, Post & PostFile, Put, Delete) letting you call custom user-defined routes REST-fully e.g:
</p>
<code class="csharp">var response = client.Get<HelloResponse>("/hello/World!");
Console.WriteLine(response.Result); // => Hello, World
</code>
<h4>Async Example</h4>
<code class="csharp">client.GetAsync<HelloResponse>("/hello/World!",
r => Console.WriteLine(r.Result), (r, ex) => { throw ex; });
</code>
<h3>MonoTouch</h3>
<p>
Due to iOS's <a href="http://docs.xamarin.com/ios/about/limitations">No-JIT restrictions</a>, MonoTouch apps will need to use these
<a href="https://github.com/ServiceStack/ServiceStack/tree/master/release/latest/MonoTouch">custom builds of ServiceStack's Serializers and Service Clients</a>.
</p>
<h3>JavaScript</h3>
<p>
As ServiceStack returns 'clean responses' (i.e. your Serialized DTOs as-is), it can easily be called with other existing Http or Ajax clients, e.g. using jQuery:
</p>
<code class="csharp">$.getJSON('servicestack/hello/World!', function(r){
alert(r.Result);
});
</code>
<button onclick="$.getJSON('servicestack/hello/World!', function(r){ alert(r.Result); });">Try It</button>
<a name="links"></a>
<h2>Where to now?</h2>
<h3>Northwind Database Examples</h3>
<p>
Now that you've got the hang of how easy it is to create a simple web service, check out the <a href="http://www.servicestack.net/ServiceStack.Northwind/">Northwind Database examples</a> to see how useful servicestack becomes with just a little db code.
</p>
<h3>Download the code</h3>
<p>
Hopefully this tutorial shows just how easy it is to get started and quickly build
web services with <a href="http://www.servicestack.net">Service Stack</a>.
</p>
<p>
The complete source code for this example is
<a href="https://github.com/ServiceStack/ServiceStack.Examples/tree/master/src/ServiceStack.Hello">viewable online</a>
or available to download as zip package from the link below:
<a id="btn-download" href="https://github.com/ServiceStack/ServiceStack.Examples/downloads">
<img src="http://www.servicestack.net/btn-download.gif" alt="Download ServiceStack.Examples.zip">
</a>
<a id="mono" href="http://www.mono-project.com"><img src="img/Mono-powered-big.png" alt="powered by mono" /></a>
</p>
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