项目概述JAVA肌肉便利店二手交易平台uniapp小程序源码是一个基于Java后端和uniapp前端开发的二手交易平台。该平台支持用户发布、浏览、购买二手商品具备用户管理、商品管理、订单管理等功能。以下为代码片段解析和功能实现说明。后端Java代码结构后端采用Spring Boot框架主要包含控制器、服务层、数据访问层和实体类。实体类设计商品实体类Product定义如下Entity Table(name product) public class Product { Id GeneratedValue(strategy GenerationType.IDENTITY) private Long id; private String name; private String description; private Double price; ManyToOne private User seller; // 其他字段及getter/setter省略 }用户实体类User定义如下Entity Table(name user) public class User { Id GeneratedValue(strategy GenerationType.IDENTITY) private Long id; private String username; private String password; private String phone; // 其他字段及getter/setter省略 }数据访问层商品数据访问接口ProductRepositorypublic interface ProductRepository extends JpaRepositoryProduct, Long { ListProduct findBySeller(User seller); ListProduct findByNameContaining(String keyword); }用户数据访问接口UserRepositorypublic interface UserRepository extends JpaRepositoryUser, Long { User findByUsername(String username); }服务层商品服务类ProductServiceService public class ProductService { Autowired private ProductRepository productRepository; public ListProduct getAllProducts() { return productRepository.findAll(); } public Product saveProduct(Product product) { return productRepository.save(product); } }用户服务类UserServiceService public class UserService { Autowired private UserRepository userRepository; public User registerUser(User user) { return userRepository.save(user); } }控制器层商品控制器ProductControllerRestController RequestMapping(/api/products) public class ProductController { Autowired private ProductService productService; GetMapping public ListProduct getProducts() { return productService.getAllProducts(); } PostMapping public Product addProduct(RequestBody Product product) { return productService.saveProduct(product); } }用户控制器UserControllerRestController RequestMapping(/api/users) public class UserController { Autowired private UserService userService; PostMapping(/register) public User register(RequestBody User user) { return userService.registerUser(user); } }前端uniapp代码结构前端采用uniapp框架主要包含页面、组件和API调用模块。页面设计首页index.vuetemplate view product-list :productsproducts / /view /template script import ProductList from /components/ProductList.vue; export default { components: { ProductList }, data() { return { products: [] }; }, onLoad() { this.fetchProducts(); }, methods: { fetchProducts() { uni.request({ url: http://localhost:8080/api/products, success: (res) { this.products res.data; } }); } } }; /script商品详情页product-detail.vuetemplate view product-detail :productproduct / /view /template script import ProductDetail from /components/ProductDetail.vue; export default { components: { ProductDetail }, data() { return { product: {} }; }, onLoad(options) { this.fetchProduct(options.id); }, methods: { fetchProduct(id) { uni.request({ url: http://localhost:8080/api/products/${id}, success: (res) { this.product res.data; } }); } } }; /script组件设计商品列表组件ProductList.vuetemplate view view v-forproduct in products :keyproduct.id product-card :productproduct / /view /view /template script import ProductCard from /components/ProductCard.vue; export default { components: { ProductCard }, props: [products] }; /script商品卡片组件ProductCard.vuetemplate view clicknavigateToDetail text{{ product.name }}/text text{{ product.price }}/text /view /template script export default { props: [product], methods: { navigateToDetail() { uni.navigateTo({ url: /pages/product-detail?id${this.product.id} }); } } }; /scriptAPI调用模块封装API请求模块api.jsconst baseUrl http://localhost:8080/api; export const getProducts () { return uni.request({ url: ${baseUrl}/products }); }; export const getProduct (id) { return uni.request({ url: ${baseUrl}/products/${id} }); };数据库设计采用MySQL数据库主要表结构如下用户表userCREATE TABLE user ( id BIGINT PRIMARY KEY AUTO_INCREMENT, username VARCHAR(50) NOT NULL, password VARCHAR(100) NOT NULL, phone VARCHAR(20) );商品表productCREATE TABLE product ( id BIGINT PRIMARY KEY AUTO_INCREMENT, name VARCHAR(100) NOT NULL, description TEXT, price DECIMAL(10,2) NOT NULL, seller_id BIGINT, FOREIGN KEY (seller_id) REFERENCES user(id) );功能实现说明用户注册用户通过填写用户名、密码和手机号完成注册后端对密码进行加密存储。商品发布用户登录后可以发布商品填写商品名称、描述和价格后端保存到数据库。商品搜索首页提供搜索框用户输入关键词后后端返回匹配的商品列表。订单管理用户下单后生成订单记录后端更新商品状态为“已售出”。部署说明后端部署安装JDK和Maven。打包项目mvn package。运行JAR包java -jar target/your-project.jar。前端部署安装HBuilderX。导入uniapp项目。运行到微信开发者工具。注意事项后端需配置数据库连接信息。前端需根据实际后端地址修改API请求URL。小程序上线前需配置合法域名。