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Как сделать ссылку на JSP страницу в меню (Spring MVC + web)
#39818553
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Я написал проект где хочу чтобы в меню при нажатии на вкладку "студенты" выпадал список и там в списке при нажатий на "список всех студентов" меня направило сразу же на страницу allStudents.jsp Я написал но почему пишет что страница не найдена
menutemplate.jsp
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<%@page contentType="text/html" pageEncoding="UTF-8" isELIgnored="false"%>
<nav>
<ul class="topmenu">
<li><a href="">Главная</a></li>
<li><a href="">Образование</a></li>
<li><a href="" class="down">Студенты</a>
<ul class="submenu">
<li><a href="allStudents.jsp">Список</a></li>
</ul>
</li>
<li><a href="" class="down">Карьера</a>
<ul class="submenu">
<li><a href="">Бла бла</a></li>
<li><a href="">Бла бла</a></li>
<li><a href="">Бла бла</a></li>
<li><a href="">Бла бла</a></li>
</ul>
</li>
<li><a href="">Филиалы</a></li>
<li><a href="">Выпусники</a></li>
<li><a href="">Преподователи</a></li>
<li><a href="">Пресс-Служба</a></li>
<li><a href="">Клубы</a></li>
<li><a href="">Портал</a></li>
<li><a href="">Медиа</a></li>
<li><a href="">Контакты</a></li>
<li><a href="">О нас</a></li>
</ul>
</nav>
Здесь раньше на этой странице я нажимал на кнопку "показать всех студентов" и меня сразу же направляло туда, но сейчас я хочу чтобы все работало через меню
index.jsp
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<%@page contentType="text/html" pageEncoding="UTF-8" isELIgnored="false"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link href="style.css" rel="stylesheet">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/js/bootstrap.min.js"></script>
<link href="../css/style.css" rel="stylesheet" type="text/css">
<style><%@include file="/css/style.css"%></style>
<title>Home Page</title>
</head>
<body>
<div class="bg">
<div class ="pokaz">
<form action="allStudents" method="post">
<input class="btn btn-primary" type="submit" value="Показать всех студентов">
</form>
</div>
</div>
</body>
</html>
StudentController.java
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package adil.java.schoolmaven.controller;
import java.io.File;
import java.io.IOException;
import java.util.List;
import javax.servlet.ServletContext;
import adil.java.schoolmaven.entity.Student;
import adil.java.schoolmaven.service.StudentService;
import java.nio.file.FileSystemException;
import javax.servlet.http.HttpServletRequest;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.ModelAndView;
@Controller
public class StudentController {
@Autowired
private ServletContext servletContext;
// Constructor based Dependency Injection
private StudentService studentService;
public StudentController() {
}
@Autowired
public StudentController(StudentService studentService) {
this.studentService = studentService;
}
@RequestMapping(value = {"/", "/index"}, method = RequestMethod.GET)
public ModelAndView hello() {
ModelAndView mv = new ModelAndView();
mv.setViewName("index");
return mv;
}
// Get All Users
@RequestMapping(value = "/allStudents", method = {RequestMethod.GET, RequestMethod.POST})
public ModelAndView displayAllUser() {
System.out.println("User Page Requested : All Students");
ModelAndView mv = new ModelAndView();
List<Student> studentList = studentService.getAllStudents();
mv.addObject("studentList", studentList);
mv.setViewName("allStudents");
return mv;
}
@RequestMapping(value = "/addStudent", method = RequestMethod.GET)
public ModelAndView displayNewUserForm() {
ModelAndView mv = new ModelAndView("addStudent");
mv.addObject("headerMessage", "Add Student Details");
mv.addObject("student", new Student());
return mv;
}
@PostMapping(value = "/addStudent")
public String saveNewStudent(@RequestParam("name") String name,
@RequestParam("surname") String surname,
@RequestParam("avatar") MultipartFile file)
throws IOException {
if (file != null && !file.isEmpty()) {
Student student = new Student();
student.setSurname(surname);
student.setName(name);
student.setAvatar(studentService.saveAvatarImage(file).getName());
studentService.saveStudent(student);
}
return "redirect:/allStudents";
}
@GetMapping(value = "/editStudent/{id}")
public ModelAndView displayEditUserForm(@PathVariable Long id) {
ModelAndView mv = new ModelAndView("/editStudent");
Student student = studentService.getStudentById(id);
mv.addObject("headerMessage", "Редактирование студента");
mv.addObject("student", student);
return mv;
}
@PostMapping(value = "/editStudent")
public ModelAndView saveEditedUser(@RequestParam("id") Long id,
@RequestParam("name") String name,
@RequestParam("surname") String surname,
@RequestParam("avatar") MultipartFile file) {
ModelAndView mv = new ModelAndView("redirect:/allStudents");
try {
studentService.updateStudent(name, surname, file, studentService.getStudentById(id));
}
catch (FileSystemException ex){
ex.printStackTrace();
}
catch (IOException e) {
return new ModelAndView("error");
}
return mv;
}
@GetMapping(value = "/deleteStudent/{id}")
public ModelAndView deleteUserById(@PathVariable Long id) {
studentService.deleteStudentById(id);
ModelAndView mv = new ModelAndView("redirect:/allStudents");
return mv;
}
}package adil.java.schoolmaven.controller;
import java.io.File;
import java.io.IOException;
import java.util.List;
import javax.servlet.ServletContext;
import adil.java.schoolmaven.entity.Student;
import adil.java.schoolmaven.service.StudentService;
import java.nio.file.FileSystemException;
import javax.servlet.http.HttpServletRequest;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.ModelAndView;
@Controller
public class StudentController {
@Autowired
private ServletContext servletContext;
// Constructor based Dependency Injection
private StudentService studentService;
public StudentController() {
}
@Autowired
public StudentController(StudentService studentService) {
this.studentService = studentService;
}
@RequestMapping(value = {"/", "/index"}, method = RequestMethod.GET)
public ModelAndView hello() {
ModelAndView mv = new ModelAndView();
mv.setViewName("index");
return mv;
}
// Get All Users
@RequestMapping(value = "/allStudents", method = {RequestMethod.GET, RequestMethod.POST})
public ModelAndView displayAllUser() {
System.out.println("User Page Requested : All Students");
ModelAndView mv = new ModelAndView();
List<Student> studentList = studentService.getAllStudents();
mv.addObject("studentList", studentList);
mv.setViewName("allStudents");
return mv;
}
@RequestMapping(value = "/addStudent", method = RequestMethod.GET)
public ModelAndView displayNewUserForm() {
ModelAndView mv = new ModelAndView("addStudent");
mv.addObject("headerMessage", "Add Student Details");
mv.addObject("student", new Student());
return mv;
}
@PostMapping(value = "/addStudent")
public String saveNewStudent(@RequestParam("name") String name,
@RequestParam("surname") String surname,
@RequestParam("avatar") MultipartFile file)
throws IOException {
if (file != null && !file.isEmpty()) {
Student student = new Student();
student.setSurname(surname);
student.setName(name);
student.setAvatar(studentService.saveAvatarImage(file).getName());
studentService.saveStudent(student);
}
return "redirect:/allStudents";
}
@GetMapping(value = "/editStudent/{id}")
public ModelAndView displayEditUserForm(@PathVariable Long id) {
ModelAndView mv = new ModelAndView("/editStudent");
Student student = studentService.getStudentById(id);
mv.addObject("headerMessage", "Редактирование студента");
mv.addObject("student", student);
return mv;
}
@PostMapping(value = "/editStudent")
public ModelAndView saveEditedUser(@RequestParam("id") Long id,
@RequestParam("name") String name,
@RequestParam("surname") String surname,
@RequestParam("avatar") MultipartFile file) {
ModelAndView mv = new ModelAndView("redirect:/allStudents");
try {
studentService.updateStudent(name, surname, file, studentService.getStudentById(id));
}
catch (FileSystemException ex){
ex.printStackTrace();
}
catch (IOException e) {
return new ModelAndView("error");
}
return mv;
}
@GetMapping(value = "/deleteStudent/{id}")
public ModelAndView deleteUserById(@PathVariable Long id) {
studentService.deleteStudentById(id);
ModelAndView mv = new ModelAndView("redirect:/allStudents");
return mv;
}
}
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