Re: Question in writing Struts Program
Looks to me when you hit your action you are not saving those attributes
in request.
request.setAttribute(username, PersonName);
Then in your JSP you can get the Attribute using getAttribute.
However I don't think you want to do this. Coming out of the action you
should call your business logic to determine if the login was
successful, and it looks like you have the code correct to get the
information from the form. Looking at your code I see the following in
the action:
String PersonName = TestFormBean.getPersonName();
String Psw = TestFormBean.getPsw()
Add something like:
BusinessLogic bl = new BusinessLogic();
try
{
bl.testLogin(PersonName, Psw);
}
catch (BusinessLogicException e)
{
return(mapping.findForward(login failed);
}
return(mapping.findForward(success);
Something like this. I am pretty new at Struts however.
HFC
友信 徐 wrote:
Hello,everybody.
Recently,I wrote a simple JSP Web program basing on the Struts
architecture.It created a page for a user to input his name and password,and
after the user click the submit botton on the form,it can redirect to another
page and show the name and password that the use has input on the page.I have
completed the program but it can't work properly.
I listed each part of the program as following:
(a) TestForm.jsp
%@ page language=java contentType=text/html; charset=UTF-8
pageEncoding=UTF-8%
!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.01 Transitional//EN
head
titleLogin Interface/title
/head
body vLink=#00 link=#003366 bgColor=#E0F0F8
img height=33 src=image/enter.gif width=148
form action=ReadTestForm.do method=post
UserName:
input size=15name=PersonNamep
Password:
input type=password size=15 name=Pswp
input type=submit value=Submit
/form
(b) MTestForm.java
package Test;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionMessage;
public class MTestForm extends ActionForm{
private String PersonName = null;
private String Psw= null;
public MTestForm(){}
public void setPersonName(String name) {
this.PersonName = name;
}
public String getPersonName() {
return PersonName;
}
public void setPsw(String psw) {
this.Psw = psw;
}
public String getPsw() {
return Psw;
}
public void reset(ActionMapping mapping,
HttpServletRequest request) {
this.PersonName = null;
this.Psw = null;
}
}
(c) ReadTestFormAction.java
package Test;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessages;
import org.apache.struts.action.ActionMessage;
import javax.servlet.ServletContext;
import javax.sql.DataSource;
import javax.servlet.http.*;
public final class ReadTestFormAction extends Action{
public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) throws Exception {
MTestForm TestFormBean = (MTestForm) form;
String PersonName = TestFormBean.getPersonName();
String Psw = TestFormBean.getPsw();
return mapping.findForward(ReadTestFormOk);
}
}
(d) ShowForm.jsp
%@ page language=java contentType=text/html; charset=UTF-8
pageEncoding=UTF-8%
!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.01 Transitional//EN
%@ page import = classmate.* %
html
head
meta http-equiv=Content-Type content=text/html; charset=UTF-8
titleRead Test Form and Show the Data/title
/head
body
%
MTestForm ReadformBean1 =
(MTestForm)request.getAttribute(TestFormBean1);
%
h1img src=image/smile.gif
Welcome
%=ReadformBean1.getPersonName()%
Your Password is:
%=ReadformBean1.getPsw()%
/h1br
/body
/html
(e) web.xml
?xml version=1.0 encoding=ISO-8859-1?
!DOCTYPE web-app
PUBLIC -//Sun Microsystems, Inc.//DTD Web Application 2.3//EN
http://java.sun.com/dtd/web-app_2_3.dtd;
web-app
!-- Action Servlet Configuration --
servlet
Question in writing Struts Program
Hello,everybody.
Recently,I wrote a simple JSP Web program basing on the Struts
architecture.It created a page for a user to input his name and password,and
after the user click the submit botton on the form,it can redirect to another
page and show the name and password that the use has input on the page.I have
completed the program but it can't work properly.
I listed each part of the program as following:
(a) TestForm.jsp
%@ page language=java contentType=text/html; charset=UTF-8
pageEncoding=UTF-8%
!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.01 Transitional//EN
head
titleLogin Interface/title
/head
body vLink=#00 link=#003366 bgColor=#E0F0F8
img height=33 src=image/enter.gif width=148
form action=ReadTestForm.do method=post
UserName:
input size=15name=PersonNamep
Password:
input type=password size=15 name=Pswp
input type=submit value=Submit
/form
(b) MTestForm.java
package Test;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionMessage;
public class MTestForm extends ActionForm{
private String PersonName = null;
private String Psw= null;
public MTestForm(){}
public void setPersonName(String name) {
this.PersonName = name;
}
public String getPersonName() {
return PersonName;
}
public void setPsw(String psw) {
this.Psw = psw;
}
public String getPsw() {
return Psw;
}
public void reset(ActionMapping mapping,
HttpServletRequest request) {
this.PersonName = null;
this.Psw = null;
}
}
(c) ReadTestFormAction.java
package Test;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessages;
import org.apache.struts.action.ActionMessage;
import javax.servlet.ServletContext;
import javax.sql.DataSource;
import javax.servlet.http.*;
public final class ReadTestFormAction extends Action{
public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) throws Exception {
MTestForm TestFormBean = (MTestForm) form;
String PersonName = TestFormBean.getPersonName();
String Psw = TestFormBean.getPsw();
return mapping.findForward(ReadTestFormOk);
}
}
(d) ShowForm.jsp
%@ page language=java contentType=text/html; charset=UTF-8
pageEncoding=UTF-8%
!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.01 Transitional//EN
%@ page import = classmate.* %
html
head
meta http-equiv=Content-Type content=text/html; charset=UTF-8
titleRead Test Form and Show the Data/title
/head
body
%
MTestForm ReadformBean1 =
(MTestForm)request.getAttribute(TestFormBean1);
%
h1img src=image/smile.gif
Welcome
%=ReadformBean1.getPersonName()%
Your Password is:
%=ReadformBean1.getPsw()%
/h1br
/body
/html
(e) web.xml
?xml version=1.0 encoding=ISO-8859-1?
!DOCTYPE web-app
PUBLIC -//Sun Microsystems, Inc.//DTD Web Application 2.3//EN
http://java.sun.com/dtd/web-app_2_3.dtd;
web-app
!-- Action Servlet Configuration --
servlet
servlet-nameactionServlet/servlet-name
servlet-classorg.apache.struts.action.ActionServlet/servlet-class
/servlet
!-- Action Servlet Mapping --
servlet-mapping
servlet-nameactionServlet/servlet-name
url-pattern*.do/url-pattern
/servlet-mapping
!-- The Welcome File List --
welcome-file-list
welcome-fileTestForm.jsp/welcome-file
/welcome-file-list
/web-app
(f) struts-config.xml
?xml version=1.0 encoding=ISO-8859-1 ?
!DOCTYPE struts-config PUBLIC
-//Apache Software Foundation//DTD Struts Configuration 1.1//EN
http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd;
struts-config
form-beans
form-bean name=formBean1 type=Test.UserForm/
form-bean name=TestFormBean1 type=Test.MTestForm
/form-bean
action-mappings
action path=/login type=Test.LoginAction
name=formBean1 scope=request input=/login.jsp
forward name=failed
