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Yo Vinchen
2022-10-30 11:02:41 +08:00
commit a93cdd1a1e
190 changed files with 27813 additions and 0 deletions
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4
src/com/qf/service/AddressService.java Normal file
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package com.qf.service;
public interface AddressService {
}

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src/com/qf/service/CartService.java Normal file
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package com.qf.service;
import com.qf.entity.Cart;
import java.lang.reflect.InvocationTargetException;
import java.sql.SQLException;
import java.util.List;
public interface CartService {
void createCart(int uid, String pid) throws SQLException, InvocationTargetException, IllegalAccessException;
List<Cart> findAll(int uid) throws SQLException, InvocationTargetException, IllegalAccessException;
void deleteCartByCid(String cid) throws SQLException;
void updateCartByCid(String cid, String price, String cnum) throws SQLException;
void clearCartByUid(String uid) throws SQLException;
}

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src/com/qf/service/ProductService.java Normal file
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package com.qf.service;
import com.qf.entity.PageBean;
import com.qf.entity.Product;
import java.sql.SQLException;
public interface ProductService {
PageBean<Product> findPage(String tid, int page, int pageSize) throws SQLException;
Product findProductByPid(String pid) throws SQLException;
}

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src/com/qf/service/TypeService.java Normal file
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package com.qf.service;
import com.qf.entity.Type;
import java.sql.SQLException;
import java.util.List;
public interface TypeService {
//查询返回所有类别表中对应的type信息
List<Type> findAll() throws SQLException;
}

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src/com/qf/service/UserService.java Normal file
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package com.qf.service;
import com.qf.entity.User;
import java.sql.SQLException;
public interface UserService {
//查询用户名是否存在
boolean checkedUser(String username) throws SQLException;
//注册业务逻辑
int registerUser(User user) throws SQLException;
//登录的业务逻辑
User login(String username, String password) throws SQLException;
}

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src/com/qf/service/impl/AddressServiceImpl.java Normal file
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package com.qf.service.impl;
import com.qf.service.AddressService;
public class AddressServiceImpl implements AddressService {
}

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src/com/qf/service/impl/CartServiceImpl.java Normal file
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package com.qf.service.impl;
import com.qf.dao.CartDao;
import com.qf.dao.ProductDao;
import com.qf.dao.impl.CartDaoImpl;
import com.qf.dao.impl.ProductDaoImpl;
import com.qf.entity.Cart;
import com.qf.entity.Product;
import com.qf.service.CartService;
import java.lang.reflect.InvocationTargetException;
import java.math.BigDecimal;
import java.sql.SQLException;
import java.util.List;
public class CartServiceImpl implements CartService {
//1.向购物车中添加物品
@Override
public void createCart(int uid, String pid) throws SQLException, InvocationTargetException, IllegalAccessException {
//1.判断商品是否已经存在
CartDao cartDao = new CartDaoImpl();
Cart cart = cartDao.hasCart(uid, pid);
if (cart != null) {
//已存在该物品，修改数量
cart.setCnum(cart.getCnum() + 1);
cartDao.updateCart(cart);
} else {
//不存在该物品，添加该物品
ProductDao productDao = new ProductDaoImpl();
Product product = productDao.selectProductByPid(pid);
//完成添加
cart = new Cart();
cart.setCnum(1);
cart.setPid(Integer.parseInt(pid));
cart.setProduct(product);
cart.setUid(uid);
//完成插入操作
cartDao.insertCart(cart);
}
}
//2.根据uid查询所有商品
@Override
public List<Cart> findAll(int uid) throws SQLException, InvocationTargetException, IllegalAccessException {
CartDao cartDao = new CartDaoImpl();
//1.根据用户 id 查询对应购物车里面的商品
List<Cart> carts = cartDao.selectCartByUid(uid);
return carts;
}
//3.根据cid删除购物车中物品
@Override
public void deleteCartByCid(String cid) throws SQLException {
CartDao cartDao = new CartDaoImpl();
cartDao.deleteCartByCid(cid);
}
//4.购物车修改数量
@Override
public void updateCartByCid(String cid, String price, String cnum) throws SQLException {
//1.将对应的 cnum 和 price 转换成对应的大数据类型
BigDecimal cnumbig = new BigDecimal(cnum);
BigDecimal prciebig = new BigDecimal(price);
//2.进行小计计算
BigDecimal count = prciebig.multiply(cnumbig);
//3.数据库中修改
CartDao cartDao = new CartDaoImpl();
cartDao.updateByCid(count, cnumbig, cid);
}
//5.清空购物车
@Override
public void clearCartByUid(String uid) throws SQLException {
CartDao cartDao = new CartDaoImpl();
cartDao.clearCartByUid(uid);
}
}

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src/com/qf/service/impl/ProductServiceImpl.java Normal file
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package com.qf.service.impl;
import com.qf.dao.ProductDao;
import com.qf.dao.impl.ProductDaoImpl;
import com.qf.entity.PageBean;
import com.qf.entity.Product;
import com.qf.service.ProductService;
import java.sql.SQLException;
import java.util.List;
public class ProductServiceImpl implements ProductService {
@Override
public PageBean<Product> findPage(String tid, int page, int pageSize) throws SQLException {
ProductDao productDao = new ProductDaoImpl();
//1.查询有多少条数据
long count = productDao.selectCountByTid(tid);
//
List<Product> list = productDao.selectProductByPage(page, pageSize, tid);
return new PageBean<Product>(list, page, pageSize, count);
}
@Override
public Product findProductByPid(String pid) throws SQLException {
//1.先到数据库中进行商品查询
ProductDao productDao = new ProductDaoImpl();
//2.定义一个productdao里面对应的方法，返回product
Product product = productDao.selectProductByPid(pid);
//3.返回product信息
return product;
}
}

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src/com/qf/service/impl/TypeServiceImpl.java Normal file
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package com.qf.service.impl;
import com.qf.dao.TypeDao;
import com.qf.dao.impl.TypeDaoImpl;
import com.qf.entity.Type;
import com.qf.service.TypeService;
import java.sql.SQLException;
import java.util.List;
public class TypeServiceImpl implements TypeService {
@Override
public List<Type> findAll() throws SQLException {
//这里调用TypeDao接口（Dao层）
TypeDao typeDao = new TypeDaoImpl();
List<Type> types = typeDao.selectAll();
return types;
}
}

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src/com/qf/service/impl/UserServiceImpl.java Normal file
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package com.qf.service.impl;
import com.qf.dao.UserDao;
import com.qf.dao.impl.UserDaoImpl;
import com.qf.entity.User;
import com.qf.service.UserService;
import com.qf.utils.MD5Utils;
import java.sql.SQLException;
public class UserServiceImpl implements UserService {
//查询用户名是否存在
@Override
public boolean checkedUser(String username) throws SQLException {
//根据dao访问对象
UserDao userDao = new UserDaoImpl();
User user = userDao.selectUserByUname(username);
//处理返回值
if (user != null) {
return true;
}
//没有查询到
return false;
}
//注册业务逻辑
@Override
public int registerUser(User user) throws SQLException {
UserDao userDao = new UserDaoImpl();
int row = userDao.insertUser(user);
return row;
}
//登录的业务逻辑
@Override
public User login(String username, String password) throws SQLException {
//1.密码加密处理（数据库中密码已加密处理）便于比较
String md5password = MD5Utils.md5(password);
//2.根据用户名查询用户
UserDao userDao = new UserDaoImpl();
User user = userDao.selectUserByUname(username);
//3.账号密码对比（正确返回user）
if (user != null && user.getUpassword().equals(md5password)) {
return user;
}
//错误返回空 null
return null;
}
}