Java Code: 2012

Sunday, 16 September 2012

struts if tag

Example for if tag

Trying to build your project as above structure :

I am codding for some important java and jsp codding as below you must be try to implement in your word:

# ifelse.jsp :

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
 pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
 <s:form action="doLogin" method="post">
 <s:if test="%{p in test}">
Inside If block
</s:if>
 <s:else>
Inside Else block
</s:else>

 </s:form>
</body>
</html>

# add this code into struts.xml (see ifelse example tag):

<action name="doLogin" class="com.anna.action.testifelse">
 <result name="SUCCESS">/ifelse.jsp</result>
 <result name="error">/fail.jsp</result>
 </action>

# wex.xml file

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>Struts2Example7</display-name>
<filter>
 <filter-name>struts2</filter-name>
 <filter-class>
 org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
 </filter>
 <filter-mapping>
 <filter-name>struts2</filter-name>
 <url-pattern>/*</url-pattern>
 </filter-mapping>

 <welcome-file-list>
 <welcome-file>index.jsp</welcome-file>
 </welcome-file-list>
</web-app>

right click on ifelse.jsp -> Run As -> Run on server . see the answer.

Try this code u will get the solution of your problem ...if you any problem than send me a email at or give comment..you will also join with me...

Saturday, 15 September 2012

Struts tag hierarchy

The Struts 2 Tags has been dividing into two types as follow:

Struts Generic Tags
These tag is use to control the execution flow when pages are rendered. Another use of struts generic tags are data extraction.

Control Tags:

It is used for flow control, such as if, else and iterate.

Here are the list of Control Tags:

if ,
elseIf,
else,
append,
genertator,
iterator ,
merge ,
subset .

Data Tags:

These tags is using for data manipulation or creation, such as bean, push, and i18n.

a ,
action,
bean ,
data ,
debug ,
i18u ,
include ,
param ,
push ,
set ,
text ,
url ,
property

Struts 2 Control Tags

Struts 2 Control Tags

1] If else tag :
Struts 2 :- If, ElseIf and Else tags are used to perform basic condition checking for your link like other language.

Trying to build your project as above structure :

I am codding for some important java and jsp codding as below you must be try to implement in your word:

ifelse.jsp : page

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%@taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>If Else Condition</title>
</head>
<body>

<s:if test="myBooleanValue">
I am returning TRUE. 
</s:if>
<s:else>
I am returning FALSE. 
</s:else>


<s:if test="%{myStringValue!=null}">
String is not null 
</s:if>
<s:elseif test="%{myStringValue==null}">
String is null 
</s:elseif>
<s:else>
String is null 
</s:else>


<s:if test="%{checkArrayList.size()==0}">
Object Size is Zero 
</s:if>
<s:else>
Object Size is not a Zero 
</s:else>

</body>
</html>

# IfElseConditionAction.java page

import java.util.ArrayList;
import java.util.List;
import com.opensymphony.xwork2.ActionSupport;

@SuppressWarnings("serial")
public class IfElseConditionAction extends ActionSupport {

 private List<String> checkArrayList = new ArrayList<String>();
 private String myStringValue;
 private boolean myBooleanValue;

 public String execute() {

 checkArrayList.add("aoiblog1");
 checkArrayList.add("aoiblog2");
 checkArrayList.add("aoiblog3");
 checkArrayList.add("aoiblog4");
 checkArrayList.add("aoiblog5");

 myStringValue = "aoi blog";

 myBooleanValue = true;

 return SUCCESS;
 }

 public List<String> getCheckArrayList() {
 return checkArrayList;
 }

 public void setCheckArrayList(List<String> checkArrayList) {
 this.checkArrayList = checkArrayList;
 }

 public String getMyStringValue() {
 return myStringValue;
 }

 public void setMyStringValue(String myStringValue) {
 this.myStringValue = myStringValue;
 }

 public boolean isMyBooleanValue() {
 return myBooleanValue;
 }

 public void setMyBooleanValue(boolean myBooleanValue) {
 this.myBooleanValue = myBooleanValue;
 }

 }

# web.xml page

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee

http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.FilterDispatcher
</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

#struts.xml page:

<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
<constant name="struts.devMode" value="true" />

<package name="struts2" extends="struts-default" namespace="/">
<action name="ifElseAction">
<result>/ifelse.jsp</result>
</action>
</package>
</struts>

after that run the ifelse page page by right clicking on it select Run As -> Run on server and see the magic .all the best. if youe hava any problem tha suggeset your comment on this blog or u can mail me at mailme_mukesh@rediffmail.com

thank you...

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