Writing a Simple Struts App..
Step 1: - Copy the struts-blank.war , unzip it in the development directory.
After unzipping you will get following structure
Appname
+WEB-INF
+META-INF
+pages
index.jsp
Step 2: Now we have to define a Action class ,ActionForm class and few jsp pages for the display
ActionForm class:-
package com.StrutsDemo.Example;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.*;
public final class SubmitForm extends ActionForm {
/* Last Name */
private String lastName = "Hansen"; // default value
private String sex;
private String age;
public String getLastName() {
return (this.lastName);
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public void setSex(String sex){
this.sex=sex;
}
public void setAge(String age){
this.age=age;
}
public String getAge(){
return this.age;
}
public String getSex(){
return this.sex;
}
/* Address */
private String address = null;
public String getAddress() {
return (this.address);
}
public void setAddress(String address) {
this.address = address;
}
public ActionErrors validate(ActionMapping mapping,
HttpServletRequest request) {
// Check for mandatory data
ActionErrors errors = new ActionErrors();
if (lastName == null || lastName.equals("")) {
errors.add("Last Name", new ActionMessage("error.lastName"));
}
if (address == null || address.equals("")) {
errors.add("Address", new ActionMessage("error.address"));
}
if (sex == null || sex.equals("")) {
errors.add("Sex", new ActionMessage("error.sex"));
}
if (age == null || age.equals("")) {
errors.add("Age", new ActionMessage("error.age"));
}
return errors;
}
}
Action Class:-
package com.StrutsDemo.Example;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
public final class SubmitAction extends Action {
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
SubmitForm f = (SubmitForm) form; // get the form bean
// and take the last name value
String lastName = f.getLastName();
String address = f.getAddress();
String sex = f.getSex();
String age = f.getAge();
// Translate the name to upper case
// and save it in the request object
request.setAttribute("lastName", lastName.toUpperCase());
request.setAttribute("address", address.toUpperCase());
request.setAttribute("age", age.toUpperCase());
request.setAttribute("sex", sex.toUpperCase());
// Forward control to the specified success target
return mapping.findForward("success");
}
}
Jsp page:-
configure struts-config.xml:-
configure web.xml:-
steps for validation:-
Move the application.properties from WEB-INF/src/java/resources/ to WEB-INF/classes/resources/
for checking the validation errors write the following entries in the application.properties
submit.lastName=Enter the Last Name
submit.address=Enter the address
submit.sex=Enter the sex
run the application :
http://localhost:8080/AppName/submit (in this example submit is the action name)
this example was tested with Tomcat 5.09 on Windows 2000
