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>
<title>Login Interface</title>
</head>
<body vLink="#006666" link="#003366" bgColor="#E0F0F8">
<img height="33" src="image/enter.gif" width="148">
<form action="ReadTestForm.do" method="post">
UserName:
<input size="15"name="PersonName"><p>
Password:
<input type="password" size="15" name="Psw"><p>
<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">
<title>Read Test Form and Show the Data</title>
</head>
<body>
<%
MTestForm ReadformBean1 =
(MTestForm)request.getAttribute("TestFormBean1");
%>
<h1><img src="image/smile.gif">
Welcome
<%=ReadformBean1.getPersonName()%>
Your Password is:
<%=ReadformBean1.getPsw()%>
</h1><br>
</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-name>actionServlet</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
</servlet>
<!-- Action Servlet Mapping -->
<servlet-mapping>
<servlet-name>actionServlet</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<!-- The Welcome File List -->
<welcome-file-list>
<welcome-file>TestForm.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" path="/error.jsp"></forward>
<forward name="successed" path="/right.jsp"></forward>
</action>
<action path="/regist" forward="/regist.jsp"/>
<action path="/ReadTestForm"
type="classmate.ReadTestFormAction" name="TestFormBean1"
scope="request" input="/login.jsp">
<forward name="ReadTestFormOk" path="/ReadForm.jsp"></forward>
</action>
</action-mappings>
</struts-config>
After I accessed the page of "TestForm.jsp" and input the "
Username and Password",click "Submit " button ,it can redirect to the page of
"ShowForm.jsp",but each time both the Username and Password are "Null", It
meaned that the statement {which is MTestForm ReadformBean1 =
(MTestForm)request.getAttribute("TestFormBean1");
} and its following statement in the "ShowForm.jsp" can't accessed what the
user have input for the Textboxs of Username and Password.
I have tried and tried and modify the program for many times,but it have not
been solved.
Can you help me to check out what is the wrong with the program?
Thanks you for help and Regards
(Can you anybody tell me how edit the text so that it can been printed out
clearly in this forum?)
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