小编Prz*_*mek的帖子

我正在尝试做简单的Spring MVC库

您是否知道为什么我的View有问题，当我在控制器中使用主页方法时，应该向我显示index.html，但我一直都只收到Whitelabel Error Page，而我不知道为什么：/

我的结构：[ https://i.imgur.com/5TrGGrB.png]

我的控制器：

package controller;


import model.Book;
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.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import service.BookService;

import javax.servlet.http.HttpServletRequest;
import java.util.List;


@Controller
public class LiberianController{

    @Autowired
    private BookService bookService;


    @RequestMapping(value = "/")
    public String homepage() {
        return "index";
    }

    @GetMapping(value = "/allBooks")
    public ModelAndView allBooks(ModelAndView modelAndView) {
        List<Book> books = bookService.getAllBooks();
        modelAndView.addObject("listBooks", books);
        modelAndView.setViewName("allBooks");

        return modelAndView;
    }

    @GetMapping(value = "/addBook")
    public ModelAndView newBook(ModelAndView modelAndView) {
        Book book …