ex 2 creating web services using jax-rpc

7/31/2019 Ex 2 Creating Web Services Using JAX-RPC

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Ex. 2:

Creating Web Services using JAX-RPC

AIM:

To create a web service using JAX_RPC and access it from a java client.

Procedure:

Server:

Create an interface that extends Remote

Create a class that implements the interface

Define the Service in the implementation class.

Compile the Interface and Implementation class.

Create the configuration file.Generate the mapping.xml and MyfirstService.wsdl using wscompile.exe

Packaging and Deploying:

Create a new web component using deployment tool(NewFileWeb component)

Specify the .war (web archive) file to be created.

Add the interface, implementation class, mapping.xml and MyfirstService.wsdl

Specify the context root.

choose web service endpoint

Add Alias name

ToolsDeploy

Verify URL: http://localhost:8080/math-service/math?wsdl

Client:

Create the config-wsdl.xml that specifies the URL

Generate the Stub classes.Specify the endpoint address in the Client class.

Compile and Run the client.


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Server:

//MathFace.java

package math;

import java.rmi.Remote;import java.rmi.RemoteException;

public interface MathFace extends Remote {

public int add(int a, int b) throws RemoteException;

}

MathImpl.java

package math;

import java.rmi.RemoteException;

public class MathImpl implements MathFace {

public int add(int a, int b) throws RemoteException {

return a + b;

}

}

config.xml


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I) To start the default server:

Start->Program filesSun MicrosystemsSun AppServer-Start Default Server

Start->Program filesSun MicrosystemsSun AppServer-Deploytool

II) To create a new domain and start the server:

Z:\reva>set path=C:\Sun\Appserver\bin;c:\Sun\Appserver\jdk\bin

Z:\reva>asadmin

asadmin>create-domain --adminuser admin --adminport 4848 domain2Please enter the admin password>

Please enter the admin password again>

Please enter the master password>

Please enter the master password again>

Using default port 8080 for HTTP Instance.

Using default port 7676 for JMS.Using default port 3700 for IIOP.

Using default port 8181 for HTTP_SSL.Using default port 3820 for IIOP_SSL.

Using default port 3920 for IIOP_MUTUALAUTH.

Using default port 8686 for JMX_ADMIN.

Domain domain2 created.

asadmin>start-domain domain2

Starting Domain domain2, please wait.

Log redirected to C:\Sun\AppServer\domains\domain2\logs\server.log.

Please enter the master password>

Domain domain2 is ready to receive client requests. Additional services are being started in background.

..

asadmin>stop-domain domain2

asadmin>exit

Z:\Reva>

Create build directory


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wscompile command, which reads the config.xml file created earlier, creates the MyFirstService.wsdl file

and mapping.xml in the build directory.

MyFirstService.wsdl


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mapping.xml

math

urn:Foo

math

urn:Foo

math.MyFirstService

serviceNS:MyFirstService

MathFacePort

MathFacePort

math.MathFace

portTypeNS:MathFace

bindingNS:MathFaceBinding

add

add

0

int

wsdlMsgNS:MathFace_add

int_1

IN

1int

wsdlMsgNS:MathFace_add

int_2

IN

int

wsdlMsgNS:MathFace_addResponseresult


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Packaging and Deploying the Service:

Steps:


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ContextRoot: /math-service

Click Edit Contents, Add MathFace.class, MathImpl.class and the generated MyFirstWebService.wsdl and

mapping.xml from the build directory.


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Endpoint Address: math


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Alias Name: /math


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Verify the endpoint address: math

[ Note: To add a new server instance created using asadmin, FileAdd ServerLocalhost:4849admin, pwd]

Select Tools Deploy


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Tools Descriptor Viewer

URL: http://localhost:8080/math-service/math?wsdl


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Client

config-wsdl.xml

// MathClient.java

package sstub;

import javax.xml.rpc.Stub;

public class MathClient {

private String endpointAddress;

public static void main(String argv[]) {

try {

// Invoke createProxy() to create a stub object

Stub stub = createProxy();

// Set the endpoint address the stub uses to access the service

stub._setProperty(javax.xml.rpc.Stub.ENDPOINT_ADDRESS_PROPERTY,

"http://localhost:8080/math-service/math");

// Cast the stub to the service endpoint interface (MathFace)

MathFace math = (MathFace) stub;

// Invoke the add method

System.out.println(math.add(12, 24));

} catch (Exception ex) {

ex.printStackTrace();

}

}

private static Stub createProxy() {// Create a stub object

// Note that MyFirstService_Impl, generated by wscompile, is implementation-specific

return (Stub) (new MyFirstService_Impl().getMathFacePort());}

}


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[ Note: Create sstub directory under build dir so that all generated files will be placed in that folder ]

Z:\reva> wscompile -gen:client -d build -classpath build config-wsdl.xml

[copy C:\Sun\Appserver\ lib\*.jar to C:\Sun\Appserver\ jdk\jre\lib\ext; this way, you don't have to worry about

the classpath for the JAX-RPC classes. ]

Z:\reva>javac -classpath build -d build MathClient.java

Z:\reva>java -classpath build sstub.MathClient

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RESULT:

ex 2 creating web services using jax-rpc

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