Dynamic Web Pages using JSP - Lab Deliverable 9 pps
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Introduction to Struts Ver 1.0 © 2005 Aptech Limited 1
Lab Deliverable 9 Introduction to Struts
Part II
1. Create a struts-blank.war blank application. Use the blank application to create a Web page
that displays the title and author of a book. The page includes a Submit button. After the user
clicks the Submit button, a page should appear indicating that the request is being processed.
The example requires two JSP pages and two JavaBeans. Update struts-config.xml file to
associate the Web pages with the JavaBeans.
Solution:
The files used in this exercise are:
1. test.jsp
2. searching.jsp
3. BookForm.java
4. BookAction.java
<%@ taglib uri = "/WEB-INF/struts-html.tld" prefix="html" %>
<html>
<head> <title>Struts</title>
</head>
<body>
<html:form action="book.do" ><center>
<b>TITLE:<b> <html:text property ="title" /><p>
<b>AUTHOR:<b> <html:text property ="author" /><br> <p>
<html:submit /></center>
</html:form>
</body>
</html>
Enter the code in Notepad and save the file as test.jsp in %TOMCAT_HOME%/webapps/
struts-test.
<html>
<head><title>Searching</title>
</head>
<body>
<h3><b>Searching <b></h3>
</body>
</html>
Enter the code in Notepad and save the file as searching.jsp in
%TOMCAT_HOME%/webapps/ struts-test.
package com;
import javax.servlet.http.*;
2 Ver 1.0 © 2005 Aptech Limited JSP and Struts
import org.apache.struts.action.*;
public class BookForm extends ActionForm
{
private String nTitle = null;
private String nAuthor = null;
public String getTitle() { return nTitle; }
public void setTitle(String aTitle) { nTitle = aTitle; }
public String getAuthor() { return nAuthor; }
public void setAuthor(String aAuthor) { nAuthor = aAuthor; }
public void reset(ActionMapping aMapping, HttpServletRequest
aRequest)
{
nTitle = null;
nAuthor = null;
}
}
Enter the Java code in Notepad and save the file as BookForm.java. Compile the file from the
command prompt and copy the class file in %TOMCAT_HOME%/webapps/struts-
test/WEB-INF/classes/com.
package com;
import javax.servlet.*;
import javax.servlet.http.*;
import org.apache.struts.action.*;
public class BookAction extends Action
{
public ActionForward perform(ActionMapping aMapping,
ActionForm aForm,HttpServletRequest aRequest,
HttpServletResponse aResponse)throws ServletException
{
BookForm f = (BookForm) aForm;
String title = f.getTitle();
String author = f.getAuthor();
return aMapping.findForward("saved");
}
}
Enter the Java code in Notepad and save the file as BookAction.java. Compile the file from
the command prompt and copy the class file in %TOMCAT_HOME%/webapps/struts-
test/WEB-INF/classes/com.
Introduction to Struts Ver 1.0 © 2005 Aptech Limited 3
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE struts-config PUBLIC
"-//Apache Software Foundation//DTD Struts
Configuration 1.0//EN"
"
<struts-config>
<! Form Bean Definitions >
<form-beans>
<form-bean name = "bookForm" type =
"com.bookForm"/>
</form-beans>
<! Global Forward Definitions >
<global-forwards>
<forward name = "start" path = "/index.jsp"/>
</global-forwards>
<! Action Mapping Definitions >
<action-mappings>
<action path = "/book" type = "com.bookAction" name
= "bookForm">
<forward name = "saved" path = "/greeting.jsp"/>
</action>
</action-mappings>
</struts-config>
Update the struts-config.xml file used in the Web application.
The output of the program is as shown in Figure 16.1.
4 Ver 1.0 © 2005 Aptech Limited JSP and Struts
Figure 16.1: Input page
After the user clicks the Submit button, the output of the program is as shown in Figure 16.2.
Figure 16.2: Saved page
Do It Yourself
1. Create a Login form using struts. Create two text fields in the Web page, and name the fields
as User and Password. The page includes a Submit button. After the user clicks the Submit
button, a page should appear indicating that the user is a valid user.
Solution:
Introduction to Struts Ver 1.0 © 2005 Aptech Limited 5
The files used in this exercise are:
1. cust.jsp
2. valid.jsp
3. CustForm.java
4. CustAction.java
<%@ taglib uri = "/WEB-INF/struts-html.tld" prefix="html" %>
<html>
<head> <title>Testing struts</title> </head>
<body>
<html:form action = "cust.do" > <center>
<b>User:</b> <html:text property =
"first" /> <br><br><br>
<b>Password:</b><html:password property = "pwd"
/><br><br><br>
<html:submit /> </center>
</html:form>
</body>
</html>
Enter the code in Notepad and save the file as cust.jsp in %TOMCAT_HOME%/webapps/
struts-test.
<html>
<head><title>Valid User</title>
</head>
<body>
<center><h2><b>VALID USER</b></h2></center>
</body>
</html>
Enter the code in Notepad and save the file as valid.jsp in %TOMCAT_HOME%/webapps/
struts-test.
package common.test;
import javax.servlet.http.*;
import org.apache.struts.action.*;
public class CustForm extends ActionForm
{
private String mFirst = null;
private String mPwd = null;
public String getFirst() { return mFirst; }
public void setFirst(String aFirst) { mFirst = aFirst; }
public String getPwd() { return mPwd; }
public void setPwd(String aPwd) { mPwd = aPwd; }
6 Ver 1.0 © 2005 Aptech Limited JSP and Struts
public void reset(ActionMapping aMapping, HttpServletRequest
aRequest)
{
mFirst = null;
mPwd = null;
}
}
Enter the Java code in Notepad and save the file as CustForm.java. Compile the file from the
command prompt and copy the class file in %TOMCAT_HOME%/webapps/struts-
test/WEB-INF/classes/common/test.
package common.test;
import javax.servlet.*;
import javax.servlet.http.*;
import org.apache.struts.action.*;
public class CustAction extends Action
{
public ActionForward perform(ActionMapping aMapping,
ActionForm aForm,HttpServletRequest aRequest,
HttpServletResponse aResponse)throws ServletException
{
CustForm f = (CustForm) aForm;
String first = f.getFirst();
String last = f.getPwd();
return aMapping.findForward("saved");
}
}
Enter the Java code in Notepad and save the file as CustAction.java. Compile the file from
the command prompt and copy the class file in %TOMCAT_HOME%/webapps/struts-
test/WEB-INF/classes/common/test.
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE struts-config PUBLIC
"-//Apache Software Foundation//DTD Struts
Configuration 1.0//EN"
"
<struts-config>
<! Form Bean Definitions >
<form-beans>
<form-bean name = "custForm" type =
"common.test.CustForm"/>
Introduction to Struts Ver 1.0 © 2005 Aptech Limited 7
</form-beans>
<! Global Forward Definitions >
<global-forwards>
<forward name = "start" path = "/index.jsp"/>
</global-forwards>
<! Action Mapping Definitions >
<action-mappings>
<action path = "/cust" type =
"common.test.CustAction" name = "custForm">
<forward name = "saved" path = "/valid.jsp"/>
</action>
</action-mappings>
</struts-config>
Update the struts-config.xml file used in the Web application
The output of the program is as shown in Figure 16.3.
Figure 16.3: Login page
After the user clicks the Submit button, the output of the program is as shown in Figure 16.2.
8 Ver 1.0 © 2005 Aptech Limited JSP and Struts
Figure 16.4: Valid user page
