Java help: July 2012

1.3. Basic Struts Example

WEB-INF\results\

bad-address.jsp

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD><TITLE>Illegal Email Address</TITLE></HEAD>
<BODY BGCOLOR="#FDF5E6">
<CENTER>
<H1>invalid Email Address</H1>
Please <A HREF="index.jsp">try again</A>.
</CENTER>
</BODY></HTML>

bad-password.jsp

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<HTML>

<HEAD><TITLE>invalid password</TITLE></HEAD>

<BODY BGCOLOR="#FDF5E6">

<CENTER>

<H1>invalid password</H1>

Please <A HREF="index.jsp">try again</A>.

</CENTER>

</BODY></HTML>

confirm.jsp

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>

<HTML>

<HEAD><TITLE>Success</TITLE></HEAD>

<BODY BGCOLOR="#FDF5E6">

<CENTER>

<H1>You are login successfully.</H1>

<bean:write name="userFormBean" property="name" />

Congratulations.

</CENTER>

</BODY></HTML>

1.2 Basic Struts Example

RegisterAction1.java

package coreservlets;
import javax.servlet.http.*;

import org.apache.struts.action.*;

public class RegisterAction1 extends Action {
public ActionForward execute(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
UserFormBean userBean = (UserFormBean)form;
String email = userBean.getEmail();
String password = userBean.getPassword();
if(email.equals("om@gmail.com"))
{
if(password.equals("om"))
return(mapping.findForward("success"));
else
return(mapping.findForward("bad-password"));
}
else
return(mapping.findForward("bad-address"));
}
}

1.1. Basic Struts Example...

UserFormBean.java

package coreservlets;
import java.sql.*;
import org.apache.struts.action.*;

public class UserFormBean extends ActionForm {
private String email = "Missing address";
private String password = "Missing password";
public String getEmail() {
return(email);
}

public String getName()
{
Connection con=null;
String name="not defined";
try{
Class.forName("com.mysql.jdbc.Driver");
con=DriverManager.getConnection("jdbc:mysql:///omdatabase","root","root");
Statement stat=con.createStatement();
ResultSet rs=stat.executeQuery("Select * from Student");
while(rs.next())
{
name=rs.getString(1);
}
}
catch(Exception ex)
{
name=""+ex;
}
return name;
}
public void setEmail(String email) {
this.email = email;
}

public String getPassword() {
return(password);
}

public void setPassword(String password) {
this.password = password;
}
}

1.0.Basic Struts Example

index.jsp

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD><TITLE>New Account Registration</TITLE></HEAD>
<BODY BGCOLOR="#FDF5E6">
<CENTER>
<H1>New Account Registration</H1>
<FORM ACTION="register1.do" METHOD="POST">
Email address: <INPUT TYPE="TEXT" NAME="email"><BR>
Password: <INPUT TYPE="PASSWORD" NAME="password"><BR>
<INPUT TYPE="SUBMIT" VALUE="Sign in me!">
</FORM>
</CENTER>
</BODY></HTML>

\WEB-INF

web.xml

<web-app>

<servlet>

<servlet-name>action</servlet-name>

<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>

<init-param>

<param-name>config</param-name>

<param-value>/WEB-INF/struts-config.xml</param-value>

</init-param>

</servlet>

<servlet-mapping>

<servlet-name>action</servlet-name>

<url-pattern>*.do</url-pattern>

</servlet-mapping>

</web-app>

struts-config.xml

<struts-config>

<form-beans>

<form-bean name="userFormBean"

type="coreservlets.UserFormBean"/>

</form-beans>

<global-forwards>

<forward name="success"

path="/WEB-INF/results/confirm.jsp"/>

</global-forwards>

<action-mappings>

<action path="/register1"

type="coreservlets.RegisterAction1"

name="userFormBean"

scope="request">

<forward name="bad-password"

path="/WEB-INF/results/bad-password.jsp"/>

<forward name="bad-address"

path="/WEB-INF/results/bad-address.jsp"/>

</action>

</action-mappings>

</struts-config>

Note- struts.jar must be in /WEB-INF/lib

Java help

Monday, July 23, 2012