Я хочу реализовать одну вещь в моем проекте, но она не работает. У меня есть страница JSP со списком студентов (allStudents.jsp), я хочу, чтобы при запуске проекта появлялась страница входа в систему, а после этого администратор вводил свой логин и пароль только тогда, когда он мог сразу перейти на страницу, где список студентов. Но мой проект не просит меня ввести логин и пароль и сразу открывает страницу, где находится список студентов.
AuthorizationController.jsp
package adil.java.schoolmaven.controller;
import org.springframework.stereotype.Controller;
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.servlet.ModelAndView;
@Controller
public class AuthorizationController{
// If user will be successfully authenticated he/she will be taken to the login secure page.
@RequestMapping(value="/admin", method = RequestMethod.GET)
public ModelAndView adminPage() {
ModelAndView m = new ModelAndView();
m.addObject("title", "You have successfully logged in.");
m.addObject("message", "Home");
m.setViewName("admin");
return new ModelAndView("redirect: allStudents");
}
// Spring security will see this message.
@RequestMapping(value = "/login", method = RequestMethod.POST)
public ModelAndView login(@RequestParam(value = "error", required = false) String error,
@RequestParam(value = "logout", required = false) String logout) {
ModelAndView m = new ModelAndView();
if (error != null) {
m.addObject("error", "Invalid username and password");
}
if (logout != null) {
m.addObject("msg", "you successfully logged out");
}
m.setViewName("login");
return new ModelAndView("redirect: allStudents");
}
}
Студенческий контроллер
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.lang.NonNull;
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 = "/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") @NonNull String name,
@RequestParam("surname") @NonNull String surname,
@RequestParam("avatar") MultipartFile file)
throws IOException {
Student student = new Student();
student.setSurname(surname);
student.setName(name);
if (file != null && !file.isEmpty()) {
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 String saveEditedUser(
@RequestParam("id") Long id,
@RequestParam("name") String name,
@RequestParam("surname") String surname,
@RequestParam("avatar") MultipartFile file) {
try {
studentService.updateStudent(name, surname, file, studentService.getStudentById(id));
} catch (FileSystemException ex) {
ex.printStackTrace();
} catch (IOException e) {
return "redirect:/error";
}
return "redirect:/allStudents";
}
@GetMapping(value = "/deleteStudent/{id}")
public ModelAndView deleteUserById(@PathVariable Long id) {
studentService.deleteStudentById(id);
ModelAndView mv = new ModelAndView("redirect:/allStudents");
return mv;
}
}
MVC-dispacther-serlvet
<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="adil.java.schoolmaven" />
<!-- Resolves Views Selected For Rendering by @Controllers to *.jsp Resources in the /WEB-INF/ Folder -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
login.jsp
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form" %>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!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">
<title>Custom login</title>
<style type="text/css">
.error {
color: #ff0000;
font-weight: bold;
}
.msg {
color: #008000;
font-weight: bold;
}
</style>
</head>
<body>
<h1 id="banner">Custom login form</h1>
<!-- invalid credentials error msg -->
<c:if test="${not empty error}">
<div class="error">${error}</div>
</c:if>
<!-- logged out msg -->
<c:if test="${not empty msg}">
<div class="msg">${msg}</div>
</c:if>
<!-- custom login form -->
<form name="loginform" action="<c:url value='/login'/>" method="POST">
<table>
<tr>
<td>Логин:</td> <!-- Enter username -->
<td><input type='text' name='username' value=''></td>
</tr>
<tr>
<td>Пароль:</td> <!-- Enter password -->
<td><input type='password' name='password' /></td>
</tr>
<tr>
<td colspan="2"> </td>
</tr>
<tr>
<td colspan='2'><input name="submit" type="submit" value="Submit" /></td>
</tr>
</table>
</form>
</body>
</html>
admin.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ page language="java" session="true" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!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">
<title>Secure page</title>
</head>
<body>
<h1>Title : ${title}</h1>
<h1>Message : ${message}</h1>
<!-- displaying the logged in user details. -->
<c:if test="${pageContext.request.userPrincipal.name != null}">
<span>Welcome: ${pageContext.request.userPrincipal.name}</span> | <span><a id="logout" href="${pageContext.servletContext.contextPath}/logout">Logout</a></span>
</c:if>
</body>
</html>
введите описание изображения здесь