Web Service

H Th Hong Vy

1

C BN

3

To web service

Chy th web service

Trin khai web service ln host

Web Service

Service

Tm web service cn thit

S dng web service

i ng dn ca WS lc thc thi

Client

Trong ng dng SOA dng Web Service, ta

cn quan tm

4

To ASP.NET Web Service

File > New > Project >

Language [Visual C#] > Web >

ASP.NET Web Service Application

File > New > Web Site >

ASP.NET Web Service

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To ASP.NET Web Service

Click phi project > Add New Item >

Web Service

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Xy dng hm cho Web Service

View code trong file .asmx.cs

Vit hm > thm attribute [WebMethod]cho hm

[WebMethod]

public int Sum(int x, int y)

{

return x + y;

}

7

Chy th Web Service

8

Chy th Web Service

9

Lu

Giao din kim th hm ca Web Service ch chy c my cc b (localhost)

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Trin khai Web Service

Ci IIS trn Vista/7

Control Panel > Programs and Features >

Turn Windows features on or off

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Trin khai Web Service

Chy IIS

Control Panel > Administrative Tools >

Internet Information Services (IIS) Manager

Add Application vo Default Web Site Click phi Default Web Site > Add Application

t Alias cho Web Service

Chn th mc cha Web Service Physical Path

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13

14

Lu

Khng nn t th mc cha Web Service cc th mc ring ca user

Desktop

My Documents

...

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S dng Web Service

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i ng dn Web Service

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NG DNG DCH PHP-VIT

V d 1

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M t

Xy dng 1 ng dng/web site cho php dch Php-Vit

c web service dch Php-Anh

c web service dch Anh-Vit

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M hnh

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French Php-Anh

Anh-Vit

French

English

Vietnamese

Vietnamese

Ci t

Web Service Php-Anh (.asmx.cs)

[WebMethod]

public string Translate(string french)

{

return Lookup(french);

}

public string Lookup(string word)

{

// Ci t hm tm t ting Php trong csdl

// tr ra t ting Anh tng ng

}

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Ci t

Web Service Anh-Vit (.asmx.cs)

[WebMethod]

public string Translate(string english)

{

return Lookup(english);

}

public string Lookup(string word)

{

// Ci t hm tm t ting Anh trong csdl

// tr ra t ting Vit tng ng

}

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Ci t

ng dng dch Php-Vit

public string Translate(string french)

{

// Gi web service Php-Anh

FEService proxyFE = new FEService();

string english = proxyFE.Translate(french);

// Gi web service Anh-Vit

EVService proxyEV = new EVService();

string vietnamese = proxyEV.Translate(english);

return vietnamese;

}23

Lu

i vi .NET framework 4.0:

S khng tm thy: ASP.NET Web Service thay vo l WCF

Cch to:

File>New Project > ASP.NET Empty Web application

Right click project > add new item > web service

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Lu

Khi s dng, thay v add web references th : add service references

Chn advanced > add web references

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Add service references

protected void btnTinhTong_Click(object sender, EventArgs e)

{

DemoWS.WebService1SoapClient myclient = new

DemoWS.WebService1SoapClient();

int a = Convert.ToInt32(TextBox1.Text);

int b = Convert.ToInt32(TextBox2.Text);

int tong = myclient.TinhTong(a, b);

Label1.Text = tong.ToString();

}

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Add web references

protected void btnTinhTong_Click(object sender, EventArgs e)

{

DemoWS.WebService1 myclient = new DemoWS.WebService1();

myclient.Url = "http://localhost:20911/WebService1.asmx";

int a = Convert.ToInt32(TextBox1.Text);

int b = Convert.ToInt32(TextBox2.Text);

int tong = myclient.TinhTong(a, b);

Label1.Text = tong.ToString();

}

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WS .net framework 4.0

namespace webserviceNFW4

{

[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]

public string HelloWorld()

{

return "Hello World";

}

}

} 40

Thank You!Questions & Answers

41

Dynamic webservice

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Link:

http://www.codeproject.com/KB/webservices/Dynamic_Invoke_webser

vice.aspx

Link:

http://social.msdn.microsoft.com/Forums/en/csharpgeneral/thread/391

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