So i have been working on this project my teacher gave me. A SIMPLE(but problematic for me) Java website made from 4 objects, 1 servlet, and 1 jsp file. And after long hours of finding the error, i still can't find it. look for the error below:
here is my code for the servlet:
package control;
import jakarta.servlet.RequestDispatcher;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import java.io.IOException;
import objects.Address;
import objects.Family;
import objects.Program;
import objects.Student;
/**
* Servlet implementation class ControllerKo
*/
public class ControllerKo extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public ControllerKo() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
response.getWriter().append("Served at: ").append(request.getContextPath());
request.setAttribute("pogi", "Institute of Technology");
Student js = new Student();
js.setName("Martin Parma");
js.setAge("19 years old");
js.setcivilStatus("Single");
js.setGender("Male");
js.setcontactNumber("09513300384");
Program add = new Program();
add.setdegree("Diploma in COmputer Engineering");
add.setregIreg("Regular");
add.setSem("2nd Sem");
add.setyearLevel("2nd Year");
Address in = new Address();
in.setCity("Caloocan City");
in.setBrgy("176");
in.setBlkNumber("Block 28 Lot Excess");
in.setRegion("NCR");
in.setPostalCode("1428");
Family me = new Family();
me.setfatherName("Renee");
me.setmotherName("Thelma");
me.setSiblings("one");
me.setfamilySize("4");
RequestDispatcher rd=request.getRequestDispatcher("index.jsp");
rd.forward(request, response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
the jsp file:
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="objects.Student"%>
<%@ page import="objects.Address"%>
<%@ page import="objects.Program"%>
<%@ page import="objects.Family"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1> Testing by DCPET 2-2</h1>
<h2> Welcome to Web Systems </h2>
<h3><%=request.getAttribute("pogi")%></h3>
<%
Student js = new Student();
js = (Student)request.getAttribute("student");
Address in = new Address();
in = (Address)request.getAttribute("address");
Program add = new Program();
add = (Program)request.getAttribute("program");
Family me = new Family();
me = (Family)request.getAttribute("family");
%>
<table border="1">
<tr>
<td>First Name
</td>
<td>
<%=js.getName()%>
</tr>
</table>
</body>
</html>
and my 4 objects:
package objects;
public class Student {
String Fname;
String age;
String civilStatus;
String gender;
String contactNumber;
public String getName() {
return Fname;
}
public void setName(String Fname) {
this.Fname = Fname;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public String getcivilStatus() {
return civilStatus;
}
public void setcivilStatus(String civilStatus) {
this.civilStatus = civilStatus;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public String getcontactNumber() {
return contactNumber;
}
public void setcontactNumber(String contactNumber) {
this.contactNumber = contactNumber;
}
}
package objects;
public class Program {
String degree;
String yearLevel;
String Sem;
String regIreg;
public String getdegree() {
return degree;
}
public void setdegree(String degree) {
this.degree = degree;
}
public String getyearLevel() {
return yearLevel;
}
public void setyearLevel(String yearLevel) {
this.yearLevel = yearLevel;
}
public String getSem() {
return Sem;
}
public void setSem(String Sem) {
this.Sem = Sem;
}
public String getregIreg() {
return regIreg;
}
public void setregIreg(String regIreg) {
this.regIreg = regIreg;
}
}
package objects;
public class Address {
String region;
String city;
String brgy;
String blkNumber;
String unitNumber;
String postalCode;
public String getRegion() {
return region;
}
public void setRegion(String region) {
this.region = region;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getBrgy() {
return brgy;
}
public void setBrgy(String brgy) {
this.brgy = brgy;
}
public String getBlkNumber() {
return blkNumber;
}
public void setBlkNumber(String blkNumber) {
this.blkNumber = blkNumber;
}
public String getUnitNumber() {
return unitNumber;
}
public void setUnitNumber(String unitNumber) {
this.unitNumber = unitNumber;
}
public String getPostalCode() {
return postalCode;
}
public void setPostalCode(String postalCode) {
this.postalCode = postalCode;
}
}
package objects;
public class Family {
String fatherName;
String motherName;
String siblings;
String familySize;
public String getfatherName() {
return fatherName;
}
public void setfatherName(String fatherName) {
this.fatherName = fatherName;
}
public String getmotherName() {
return motherName;
}
public void setmotherName(String motherName) {
this.motherName = motherName;
}
public String getSiblings() {
return siblings;
}
public void setSiblings(String siblings) {
this.siblings = siblings;
}
public String getfamilySize() {
return familySize;
}
public void setfamilySize(String familySize) {
this.familySize = familySize;
}
}
it seems that the objects can't connect to my jsp file so it can't run <%=js.getName()%>. So what can i do? Sorry i am a beginner to this kind of school stuff.