J2EE-LEARNER: March 2012

Saturday 31 March 2012

JSF2 CLIENT FOR AXIS 1.1 WEBSERVICE

JSF2 CLIENT FOR AXIS 1.1 WEBSERVICE

Yesterday I tried to create webservice by using axis 1.1 in tomcat6. But I was not able to. I thought that the reason could be older version of AXIS 1.1. I read in web that though axis 2 is the current version, there are number of projects which are using AXIS1.1. Therefore I downloaded the latest version of axis 1.1 from apache axis 1.1 site. that version is axis-bin-1_4. When I unzipped it I got axis-1_4 folder. Inside the folder I had

Inside the webapps folder I had axis folder. I copied that axis folder to d:\tomcat6\webapps folder. I found that drop in deployment worked correctly. My jsf 2 application also working in the same tomcat6. I got correct result as what I got yesterday with tomcat5 and jsf1.1. AXIS 1.1 is not obsolete.

screen shot is given below

code is given below,

view.xhtml

--------------

<?xml version="1.0" encoding="UTF-8"?>

<!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"

xmlns:f="http://java.sun.com/jsf/core"

xmlns:h="http://java.sun.com/jsf/html">

<h:form id="form1" >

<h:selectOneMenu id="operation" value="#{backer.state}">

<f:selectItem itemLabel="kerala" itemValue="kerala"/>

<f:selectItem itemLabel="tamilnad" itemValue="tamilnad"/>

<f:selectItem itemLabel="karnataka" itemValue="karnataka"/>

</h:selectOneMenu>

<h:commandButton id="button1"

action="#{backer.show}"

value="show" />

<h:inputTextarea rows="20" cols="40" id="text4" value="#{backer.result}" />

</h:form>

</body>

</html>

****************************************************

//backer.java

-------------

package mypack;

import javax.faces.bean.ManagedBean;

import javax.faces.bean.*;

import javax.faces.event.*;

import java.util.*;

@ManagedBean

@SessionScoped

public class backer implements java.io.Serializable

{

String result;

String state;

public void setState(String a) { state=a;}

public void setResult(String a) { result=a;}

public String getState() { return state; }

public String getResult() { return result; }

public String show()

{

tourjwshelper bean1 = new tourjwshelper();

String r=bean1.getcities(state);

setResult(r);

return null;

}

**************************************************

//tourjwshelper.java

package mypack;

import java.net.*;

import java.util.*;

import javax.xml.rpc.ParameterMode;

import org.apache.axis.client.Service;

import org.apache.axis.client.Call;

import org.apache.axis.encoding.XMLType;

public class tourjwshelper

{

public String getcities(String s)

{

String v="";

try

{

System.out.println("Start");

String s1="showcities";

Service service = new Service();

System.out.println("Service ready");

Call call = (Call) service.createCall();

System.out.println("call ready");

URL url =

new URL("http://localhost:8080/axis/tourguide.jws");

call.setTargetEndpointAddress(url);

call.setOperationName(s1);

call.addParameter("name",XMLType.XSD_STRING,ParameterMode.IN);

call.setReturnType(XMLType.XSD_STRING);

String r = s;

v = (String)call.invoke(new Object[]{r});

}catch(Exception e){System.out.println(""+e);}

return v;

}

and the .jws file is same as given in webservice previous post.

Friday 30 March 2012

SIMPLE VALIDATION DEMO IN JSF2

SIMPLE VALIDATION DEMO IN JSF2

Validation is very important in any web framework. In struts 1.1 we have validation framework with readymade scripts for validation of email,credit card, phone number etc. It is very difficult to write our own regular expression for such validations.

Similarly, Struts2 also has very good validation support. In JSF 2 it looks that we do not have much ready made validation support. I may be wrong. I find there are three standard JSF validators tags in JSF 2.

LengthValidator	<f:validateLength>	maximum, minimum
DoubleRangeValidator	<f:validateDoubleRange>	maximum, minimum
LongRangeValidator	<f:validateLongRange>	maximum, minimum

To learn how to use these tags I developed a simple demo. As usual I have written a view file(view.xhtml) and 2 java files (backer and helper bean).

1.view.xhtml

2.backer.java

2.echobean.java

view.xhtml

-------------

<?xml version="1.0" encoding="UTF-8"?>

<!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"

xmlns:f="http://java.sun.com/jsf/core"

xmlns:h="http://java.sun.com/jsf/html">

<f:view>

<h:form id="form1">

<h:outputText value="name"/>

<h:inputText id="name" value="#{backer.name}" >

<f:validateLength minimum="3" maximum="10"/>

</h:inputText>

<h:message for="name"/>

<h:outputText value="place"/>

<h:inputText id="place" value="#{backer.place}" required="true" />

<h:message for="place"/>

<h:outputText value="result"/>

<h:inputText id="text3" value="#{backer.result}" />

<h:commandButton id="button1"

action="#{backer.echo}"

value="click"/>

</h:form>

</f:view>

</body>

</html>

********************************************************

Note the color code. I am using red color for the backing bean. Green color for backing bean attributes. rose color for backing bean method or function.

--------------------------------------------------------------------------------

<f:message> is placed out side but we indicate the control id to which it refers.

backer.java

--------------

package mypack;

import javax.faces.bean.ManagedBean;

import javax.faces.bean.SessionScoped;

import javax.faces.event.*;

@ManagedBean

@SessionScoped

public class backer

{

String name;

String place;

String result;

public void setName(String a){ name=a; }

public void setPlace(String a){ place=a; }

public void setResult(String a){result=a;}

public String getName(){return name;}

public String getPlace(){return place;}

public String getResult(){return result;}

//------------------------------------------

public String echo()

{

String s1=getName();

String s2=getPlace();

echobean bean1 = new echobean();

String r=bean1.echothis(s1,s2);

setResult(r);

return "success";

}

-----------------------------------------------------------------------

In a future blog post I will explore more advanced validation.

SIMPLE CHAINED LIST DEMO IN JSF2

SIMPLE CHAINED LIST DEMO IN JSF2

Today, I developed a simple lesson for chained list. I am having combo1 showing the names of two states (tamilnad and kerala).
The user selects the desired state from the combo and clicks button1. The important cities from that state are displayed in list1.
This is the first step for ajaxified example to be developed. The facelet code is given below.
I always preferred to name the facelet file as view.xhtml.

//view.xhtml

<html xmlns="http://www.w3.org/1999/xhtml"

xmlns:f="http://java.sun.com/jsf/core"

xmlns:h="http://java.sun.com/jsf/html">

<h:form>

SELECT THE STATE, YOU WILL GET THE CITIES.

<h:selectOneMenu id="list1" value="#{cityguide.state}">

<f:selectItem itemLabel="tamilnad" itemValue="tamilnad"/>

<f:selectItem itemLabel="kerala" itemValue="kerala"/>

</h:selectOneMenu>

<h:commandButton id='button1' value="show cities"

action="#{cityguide.show}" />

<h:selectOneListbox value="#{cityguide.city}" id="list2">

<f:selectItems value="#{cityguide.cities}"/>

</h:selectOneListbox>

</h:form>

</body>

</html>

************************************

cityguide.java is the corresponding backing bean. as given below,

//cityguide.java

package mypack;

import javax.faces.bean.ManagedBean;
import javax.faces.bean.*;
import javax.faces.event.*;
import java.util.*;
@ManagedBean(name="cityguide")
@SessionScoped

public class cityguide implements java.io.Serializable
{
String state;
String city;
Vector cities;

public void setState(String a){state=a;}
public String getState() {return state;}

public void setCity(String a){city=a;}
public String getCity() {return city;}

public void setCities(Vector v){cities=v;}
public Vector getCities() { return cities;}

//--------------------------------------

public String show()
{
String a = getState();

Vector vector1 = new Vector();

if(a.equals("tamilnad"))
{
vector1.removeAllElements();
vector1.add("Chennai");
vector1.add("trichy");
vector1.add("kovai");
vector1.add("madurai");
}

if(a.equals("kerala"))
{
vector1.removeAllElements();
vector1.add("quilon");
vector1.add("kochin");
vector1.add("trivandrum");
vector1.add(" trissur");
}
System.out.println(""+vector1);
setCities(vector1);
return "";

}
}

Then type the url as below
"http://localhost:8080/jsf2chainedapp/view.jsf"

In the next post I will use AJAX for the same purpose. This example gives dynamic loading of listbox. There is no iteration code. I have simply bound a collection to list1.

Thursday 29 March 2012

JSF 1.1 CLIENT (TOMCAT5) FOR AXIS 1.1 DROP IN DEPLOYMENT WEBSERVICE

JSF 1.1 CLIENT (TOMCAT5) FOR AXIS 1.1 DROP IN DEPLOYMENT WEBSERVICE

Today, I developed a simple XML webservice by Drop in deployment method using axis 1.1. This method is the easiest method to create webservice. All that we have to do is to create a simple functionbean. We need not even compile it. Just place that java file in axis folder in tomcat5\webapps the current version of axis is AXIS2, but i am using AXIS1.1. Actually, I wanted to try connecting to the service from JSF 2. But JSF2 does not work in tomcat5. And axis does not work in tomcat6. Therefore I decided to try that in tomcat5. Both AXIS 1.1 and JSF1.1 will work in tomcat5. My function bean is named tourguide.java . I placed this file in tomcat5 webapps\axis as tourguide.jws.

I started tomcat5. In the browser I typed the URL as
"http://localhost:8080/axis/tourguide.jws?wsdl"
I found that wsdl was available.
----------------------------------------------------------------------
//tourguide.java

import java.util.*;

public class tourguide
{
public String showcities(String s)
{
Vector vector1 = new Vector();

if(s.equals("kerala"))
{
vector1.addElement("quilon");
vector1.addElement("tvm");
vector1.addElement("cochin");
vector1.addElement("kottayam");
}

if(s.equals("tamilnad"))
{
vector1.addElement("madurai");
vector1.addElement("trichy");
vector1.addElement("kovai");
vector1.addElement("chennai");
}

if(s.equals("karnataka"))
{
vector1.addElement("bangalore");
vector1.addElement("mangalore");
vector1.addElement("mysore");
vector1.addElement("hubli");
}

int n = vector1.size();

String r = "";

for( int j=0; j<n; j++)
{
String v = (String) vector1.elementAt(j);
r = r+v+"\n";
}

return r;
}
}

**********************************************************************

Then I created a java client program for the above webservice as shown below.

//tourjwsclient.java

import java.net.*;

import java.util.*;

import javax.xml.rpc.ParameterMode;

import org.apache.axis.client.Service;

import org.apache.axis.client.Call;

import org.apache.axis.encoding.XMLType;

public class tourjwsclient

{

public static void main(String args[])

{

try

{

System.out.println("Start");

String s1="showcities";

Service service = new Service();

System.out.println("Service ready");

Call call = (Call) service.createCall();

System.out.println("call ready");

URL url =

new URL("http://localhost:8080/axis/tourguide.jws");

call.setTargetEndpointAddress(url);

call.setOperationName(s1);

call.addParameter("name",XMLType.XSD_STRING,ParameterMode.IN);

call.setReturnType(XMLType.XSD_STRING);

String r = args[0];

// String s2=(String)call.invoke(new Object[]{r}); // important!

String vector = (String)call.invoke(new Object[]{r});

System.out.println(vector);

}catch(Exception e){System.out.println(""+e);}

}

***********************************************

To compile this, I placed the following jar files in classpath.

set CLASSPATH=g:\axisnew;

e:\axis11\lib\axis.jar;

e:\axis11\lib\commons-discovery.jar;

e:\axis11\lib\commons-logging.jar;

e:\axis11\lib\jaxrpc.jar;

e:\axis11\lib\saaj.jar;

e:\axis11\lib\log4j-1.2.8.jar;

e:\axis11\lib\xercesImpl.jar

**************************************************

Now, I compiled it successfully. In the above program note the URL . We have already started tomcat5. Therefore webservice is available. We can connect to this webservice from our console program. My working folder is G:\axisnew.

g:\axisnew>java tourjwsclient kerala

I got the following result.

**********************************************

Now, I converted this main program into a functionbean(helper class). I named it as tourjwshelper.java shown below.

(As I am going to use it in jsf backing bean, I added the package statement)

// tourjwshelper.java

package mypack;

import java.net.*;

import java.util.*;

import javax.xml.rpc.ParameterMode;

import org.apache.axis.client.Service;

import org.apache.axis.client.Call;

import org.apache.axis.encoding.XMLType;

public class tourjwshelper

{

public String getcities(String s)

{

String v="";

try

{

System.out.println("Start");

String s1="showcities";

Service service = new Service();

System.out.println("Service ready");

Call call = (Call) service.createCall();

System.out.println("call ready");

URL url =

new URL("http://localhost:8080/axis/tourguide.jws");

call.setTargetEndpointAddress(url);

call.setOperationName(s1);

call.addParameter("name",XMLType.XSD_STRING,ParameterMode.IN);

call.setReturnType(XMLType.XSD_STRING);

String r = s;

// String s2=(String)call.invoke(new Object[]{r}); // important!

v = (String)call.invoke(new Object[]{r});

}catch(Exception e){System.out.println(""+e);}

return v;

}

**************************************

Now I create two files for jsf 1.1 (input.jsp and backer.java).

input.jsp

----------

<!DOCTYPE HTML PUBLIC

"-//W3C//DTD HTML 4.01 Transitional//EN">

<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>

<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>

<f:view>

<html>

<h:form id="form1" >

<h:selectOneMenu id="operation" value="#{backer.state}">

<f:selectItem itemLabel="kerala" itemValue="kerala"/>

<f:selectItem itemLabel="tamilnad" itemValue="tamilnad"/>

<f:selectItem itemLabel="karnataka" itemValue="karnataka"/>

</h:selectOneMenu>

<h:commandButton id="button1"

action="#{backer.show}"

value="show" />

<h:inputTextarea rows="20" cols="40" id="text4" value="#{backer.result}" />

</h:form>

</body>

</html>

</f:view>

**********************************************

I created a new context in tomcat5 webapps as axistourjsfapp.

I placed the above jsp file in the root of this context. i created WEB-INF under the root. Placed web.xml and faces-config.xml inside WEB-INF

web.xml

----------

<?xml version='1.0' encoding='UTF-8'?>

<!DOCTYPE web-app PUBLIC

"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"

"http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>

<context-param>

<param-name>javax.faces.STATE_SAVING_METHOD</param-name>

<param-value>client</param-value>

</context-param>

<context-param>

<param-name>com.sun.faces.validateXml

</param-name>

<param-value>true</param-value>

</context-param>

<context-param>

<param-name>com.sun.faces.verifyObjects</param-name>

<param-value>true</param-value>

</context-param>

<servlet-name>Faces Servlet </servlet-name>

<servlet-class>javax.faces.webapp.FacesServlet

</servlet-class>

<load-on-startup> 1 </load-on-startup>

</servlet>

<servlet-mapping>

<servlet-name>Faces Servlet</servlet-name>

<url-pattern>/faces/*</url-pattern>

</servlet-mapping>

</web-app>

*******************************************

faces-config.xml

------------------------

<?xml version='1.0' encoding='UTF-8'?>

<!DOCTYPE faces-config PUBLIC

"-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.1//EN"

"http://java.sun.com/dtd/web-facesconfig_1_1.dtd">

<faces-config>

<locale-config>

<default-locale>en</default-locale>

</locale-config>

</application>

<managed-bean>

<managed-bean-name>backer</managed-bean-name>

<managed-bean-class>mypack.backer

</managed-bean-class>

<managed-bean-scope>session</managed-bean-scope>

</managed-bean>

</faces-config>

****************************************

Now I created classes folder and lib folder under WEB-INF. I created mypack folder under classes folder. I placed the tourjwshelper.class in mypack folder. I placed the following jar files in lib folder

Now comes the code for backing bean

//backer.java

package mypack;

import javax.faces.context.*;

import javax.faces.component.*;

import javax.faces.validator.*;

public class backer

{

String result;

String state;

public void setState(String a) { state=a;}

public void setResult(String a) { result=a;}

public String getState() { return state; }

public String getResult() { return result; }

public void show()

{

tourjwshelper bean1 = new tourjwshelper();

String r=bean1.getcities(state);

setResult(r);

}

**********************************************

shutdown tomcat5 because we have made changes in WEB-INF

and restart. I typed the URL as

"http://localhost:8080/axistourjsfapp/faces/input.jsp"

I selected 'tamilnad' from the combo and clicked show button. I got the result in area1. Therefore, I am now happy that I am able to connect to a web service from my JSF1.1 program.

I will have to try to get similar result in JSF2.

***************************************

Web service is slow. So i did not get result for some time. And then I got it.

J2EE-LEARNER

Saturday 31 March 2012

JSF2 CLIENT FOR AXIS 1.1 WEBSERVICE

Friday 30 March 2012

SIMPLE VALIDATION DEMO IN JSF2

SIMPLE CHAINED LIST DEMO IN JSF2

Thursday 29 March 2012

JSF 1.1 CLIENT (TOMCAT5) FOR AXIS 1.1 DROP IN DEPLOYMENT WEBSERVICE

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