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struts-config.xml:
from struts-submit application
1.
struts-config.xml:
from struts-example application
Global Forwarding
Local Forwarding
docsity.com
ActionForm Bean (Form bean)
Provided by developer Define an ActionForm bean (that is, a Java class extending the ActionForm class) for the input form Define it in struts-config.xml file name attribute of class Contains only property getter and property setter methods for each field-no business logic Provides standard validation mechnism
ActionForm Bean & Controller
For each ActionForm bean defined in servlet- config.xml file, Controller (ActionServlet) will Check session scope for an instance of ActionForm bean If it does not exist, controller creates one Call corresponding setter method of ActionForm bean for every request parameter whose name corresponds to the name of a property of the bean Pass the updated ActionForm bean object as a parameter to execute() method of Action class
Example: submit.jsp
1.<%@ page language="java" %> <%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %> <%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %> <%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %> **** Submit example **** Example Submit Page **** **** Last Name: Address: 1.Sex: Male Female Married: **Age: ** ** 0 - 19 ** ** 20 - 49 ** ** 50 - ** **** **** source: Keld Hansen docsity.com
Model: ActionForm
package submit;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.*;
public final class SubmitForm extends ActionForm {
/* Last Name */
private String lastName = "Hansen"; // default value
public String getLastName() {
return (this.lastName);
public void setLastName(String lastName) {
this.lastName = lastName;
/* Address */
private String address = null;
public String getAddress() {
return (this.address);
public void setAddress(String address) {
this.address = address;
} source: Keld Hansen
struts-config.xml:
1.
source: Keld Hansen docsity.com
DynaActionForm in Struts 1.
Instead of creating a new ActionForm subclass and new get/set methods for each of your bean's properties, you can list its properties, type, and defaults in the Struts configuration file Use DanaActionForm whenever possible We will learn more about this in Advanced Struts session
source: Chuck Cavaness
Action Class
Focus on control flow Process client request by calling other objects (BusinessLogic beans) inside its execute() method Returns an ActionForward object that identifies a destination resource to which control should be forwarded to The detination resource could be JSP Tile definition Velocity template Another Action
Example Action: Logon
Application needs to Authenticate a User Establish a User Session Error handling Develop a “LogonAction”
Developer Responsibility: Action Class
Extend org.jakarta.struts.action.Action Override execute() method (in Struts 1.1) perform() method (in Struts 1.0)
