CREATE TABLE `categories` ( `id` bigint unsigned NOT NULL AUTO_INCREMENT, `name` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '分类名称', `parent_id` bigint NOT NULL COMMENT '父分类ID', `description` text COMMENT '分类描述', `created_by` bigint NOT NULL COMMENT '创建者ID', `created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间', `updated_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP COMMENT '更新时间', PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET

要根据这个数据库表创建一个Vue 3页面，同时涉及Java后端，下面给出一个完整的实现方案，包含后端Java代码和前端Vue 3代码。 后端Java代码（Spring Boot） 1. 创建Spring Boot项目 首先，创建一个Spring Boot项目，可以使用Spring Initializr（https://start.spring.io/）来快速搭建项目，添加以下依赖：Spring Web、Spring Data JPA、MySQL Driver。 2. 创建实体类 在`src/main/java/com/example/demo/entity`目录下创建`Categories.java`： ```java package com.example.demo.entity; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import java.sql.Timestamp; @Entity public class Categories { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; private String name; private Long parent_id; private String description; private Long created_by; private Timestamp created_at; private Timestamp updated_at; // 构造函数、getter和setter方法 public Categories() {} public Long getId() { return id; } public void setId(Long id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Long getParent_id() { return parent_id; } public void setParent_id(Long parent_id) { this.parent_id = parent_id; } public String getDescription() { return description; } public void setDescription(String description) { this.description = description; } public Long getCreated_by() { return created_by; } public void setCreated_by(Long created_by) { this.created_by = created_by; } public Timestamp getCreated_at() { return created_at; } public void setCreated_at(Timestamp created_at) { this.created_at = created_at; } public Timestamp getUpdated_at() { return updated_at; } public void setUpdated_at(Timestamp updated_at) { this.updated_at = updated_at; } } ``` 3. 创建Repository接口 在`src/main/java/com/example/demo/repository`目录下创建`CategoriesRepository.java`： ```java package com.example.demo.repository; import com.example.demo.entity.Categories; import org.springframework.data.jpa.repository.JpaRepository; public interface CategoriesRepository extends JpaRepository<Categories, Long> { } ``` 4. 创建Service接口和实现类 在`src/main/java/com/example/demo/service`目录下创建`CategoriesService.java`和`CategoriesServiceImpl.java`： ```java // CategoriesService.java package com.example.demo.service; import com.example.demo.entity.Categories; import java.util.List; public interface CategoriesService { List<Categories> getAllCategories(); Categories saveCategory(Categories category); } // CategoriesServiceImpl.java package com.example.demo.service; import com.example.demo.entity.Categories; import com.example.demo.repository.CategoriesRepository; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; @Service public class CategoriesServiceImpl implements CategoriesService { @Autowired private CategoriesRepository categoriesRepository; @Override public List<Categories> getAllCategories() { return categoriesRepository.findAll(); } @Override public Categories saveCategory(Categories category) { return categoriesRepository.save(category); } } ``` 5. 创建Controller 在`src/main/java/com/example/demo/controller`目录下创建`CategoriesController.java`： ```java package com.example.demo.controller; import com.example.demo.entity.Categories; import com.example.demo.service.CategoriesService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.*; import java.util.List; @RestController @RequestMapping("/categories") public class CategoriesController { @Autowired private CategoriesService categoriesService; @GetMapping public List<Categories> getAllCategories() { return categoriesService.getAllCategories(); } @PostMapping public Categories saveCategory(@RequestBody Categories category) { return categoriesService.saveCategory(category); } } ``` 前端Vue 3代码 1. 创建Vue 3项目 使用Vue CLI或者Vite创建一个新的Vue 3项目。 2. 创建页面组件 在`src/components`目录下创建`CategoriesPage.vue`： ```vue <template> <div> <h1>图片分类管理</h1> <button @click="addCategory">添加分类</button> <table> <thead> <tr> <th>ID</th> <th>分类名称</th> <th>父分类ID</th> <th>分类描述</th> <th>创建者ID</th> <th>创建时间</th> <th>更新时间</th> </tr> </thead> <tbody> <tr v-for="category in categories" :key="category.id"> <td>{{ category.id }}</td> <td>{{ category.name }}</td> <td>{{ category.parent_id }}</td> <td>{{ category.description }}</td> <td>{{ category.created_by }}</td> <td>{{ category.created_at }}</td> <td>{{ category.updated_at }}</td> </tr> </tbody> </table> </div> </template> <script setup> import { ref, onMounted } from 'vue'; import axios from 'axios'; const categories = ref([]); const fetchCategories = async () => { try { const response = await axios.get('http://localhost:8080/categories'); categories.value = response.data; } catch (error) { console.error('Error fetching categories:', error); } }; const addCategory = async () => { try { const newCategory = { name: 'New Category', parent_id: 0, description: 'This is a new category', created_by: 1 }; const response = await axios.post('http://localhost:8080/categories', newCategory); categories.value.push(response.data); } catch (error) { console.error('Error adding category:', error); } }; onMounted(() => { fetchCategories(); }); </script> <style scoped> table { width: 100%; border-collapse: collapse; } th, td { border: 1px solid #ddd; padding: 8px; text-align: left; } th { background-color: #f2f2f2; } </style> ``` 额外注意的逻辑点 1. 后端代码中要确保数据库连接配置正确，包括数据库地址、用户名和密码。 2. 前端代码中使用`axios`进行网络请求，要注意跨域问题，可以在后端添加CORS配置来解决。 3. 在实际应用中，要对用户输入进行验证和错误处理，避免出现异常数据。 [2025-06-18 01:54:30 | AI写代码神器 | 1733点数解答]