Java基于HTML5的美食网站(源码+mysql+文档)

由于提供整个源代码和数据库是不现实的，我将提供一个简化的Java后端框架代码示例，它展示了如何使用Spring Boot和JPA来创建一个简单的CRUD应用程序。这个示例不包含完整的前端页面，只是后端的API部分。

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
 
@SpringBootApplication
@EnableJpaAuditing
public class RecipeApplication {
 
    public static void main(String[] args) {
        SpringApplication.run(RecipeApplication.class, args);
    }
}
 
// Recipe实体类
import javax.persistence.*;
import java.util.Date;
 
@Entity
public class Recipe {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String name;
    private String description;
    private Date creationDate;
    // 省略getter和setter方法
}
 
// RecipeRepository接口
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
 
@Repository
public interface RecipeRepository extends JpaRepository<Recipe, Long> {
}
 
// RecipeController控制器类
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import java.util.List;
 
@RestController
@RequestMapping("/recipes")
public class RecipeController {
 
    private final RecipeRepository recipeRepository;
 
    @Autowired
    public RecipeController(RecipeRepository recipeRepository) {
        this.recipeRepository = recipeRepository;
    }
 
    @GetMapping
    public List<Recipe> getAllRecipes() {
        return recipeRepository.findAll();
    }
 
    @PostMapping
    public Recipe createRecipe(@RequestBody Recipe recipe) {
        return recipeRepository.save(recipe);
    }
 
    @GetMapping("/{id}")
    public Recipe getRecipeById(@PathVariable Long id) {
        return recipeRepository.findById(id).orElse(null);
    }
 
    @PutMapping("/{id}")
    public Recipe updateRecipe(@PathVariable Long id, @RequestBody Recipe recipe) {
        recipe.setId(id);
        return recipeRepository.save(recipe);
    }
 
    @DeleteMapping("/{id}")
    public void deleteRecipe(@PathVariable Long id) {
        recipeRepository.deleteById(id);
    }
}

这个简化