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Ошибки нет, но код почему не работает корректно? (Spring MVC)
#39818822
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Написал проект про школу, и там есть возможность добавлять, редактировать студента, удалять. Почему то после редактирования студента, он должен сохранится и направить на страницу со списком студентов "allStudent.jsp" Но не направляет
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 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 new ModelAndView("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;
}
}
EditStudent.jsp
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<%@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">
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<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>
<title>Home</title>
</head>
<body>
<center>
<h1>${headerMessage}</h1>
<form:form method="POST" action="/editStudent" enctype="multipart/form-data">
<table>
<input type="hidden" value="${student.id}" name="id"/>
<tr>
<td><label path="Name">Имя</label></td>
<td><input type="text" name="name" value="${student.name}"/></td>
</tr>
<tr>
<td><label path="Surname">Фамилия</label></td>
<td><input name="surname" value="${student.surname}"/></td>
</tr>
<tr>
<td><label path="Avatar">Фотография:</label></td>
<td>
<img src="${pageContext.request.contextPath}/avatar?avatar=${student.avatar}"
style="max-height: 200px; max-width: 200px;"/>
</td>
<td>
<input type="file" name="avatar"/>
</td>
</tr>
<tr>
<td><input class="btn btn-primary" type="submit" value="Сохранить"></td>
</tr>
</table>
</form:form>
</center>
</body>
</html>
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