springboot項目
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篇幅較長，配合目錄觀看
案例準備
1. 分庫整合項目中
1.1 腳本環境準備
1.2 order-service-api修改Service接口
package com.wpj.service;
import com.wpj.entity.User;
public interface IOrderService {
public int addOrder(Integer addressId, User user);
}
1.3 order-service修改ServiceImpl實現類
package com.wpj.service.impl;
import com.alibaba.dubbo.config.annotation.Reference;
import com.alibaba.dubbo.config.annotation.Service;
import com.wpj.common.utils.OrderUtils;
import com.wpj.entity.*;
import com.wpj.mapper.IOrderMapper;
import com.wpj.service.IAddressService;
import com.wpj.service.ICartService;
import com.wpj.service.IOrderDetailService;
import com.wpj.service.IOrderService;
import org.springframework.beans.factory.annotation.Autowired;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
@Service
public class OrderServiceImpl implements IOrderService {
@Autowired
private IOrderMapper orderMapper;
@Reference
private IAddressService addressService;
@Reference
private ICartService cartService;
@Reference
private IOrderDetailService orderDetailService;
@Autowired
private OrderUtils orderUtils;
@Override
public int addOrder(Integer addressId, User user) {
// 根據地址id查詢地址的對象
Address address = addressService.selectById(addressId);
List<Cart> cartList = cartService.getUserCartList(user,"");
// 插入訂單
Order order = new Order();
String orderId = orderUtils.createOrderId(user.getId());
order.setId(orderId);
order.setUid(user.getId());
order.setPerson(address.getPhone());
order.setAddress(address.getAddress());
order.setCreateTime(new Date());
order.setOstatus(0); // 0 未支付 1 已支付 2 超時 3 取消
order.setPerson(address.getPerson());
order.setTotalPrice(cartService.getTotalPrice(cartList));
// 設置數據源
orderMapper.addOrder(order);
// 插入訂單詳情
List<OrderDetail> orderDetailList = new ArrayList<>();
for (Cart cart: cartList) {
OrderDetail orderDetail = new OrderDetail();
Goods goods = cart.getGoods();
orderDetail.setGprice(goods.getGprice());
orderDetail.setGpic(goods.getGpic());
orderDetail.setGnum(cart.getNum());
orderDetail.setGname(goods.getGname());
orderDetail.setGid(goods.getId());
orderDetail.setGcount(cart.getSubTotal());
orderDetail.setGdesc(goods.getGdesc());
orderDetailList.add(orderDetail);
if (orderDetailList.size() == 300) {
orderDetailService.addBarch(orderDetailList);
orderDetailList.clear();
}
}
if (orderDetailList.isEmpty()){
orderDetailService.addBarch(orderDetailList);
}
// 清空購物車
cartService.deleteCartByUid(user.getId());
return orderMapper.addOrder(order);
}
}
1.4 shop-order修改Controller
@RequestMapping("/addOrder")
@IsLogin(mustUser = true)
@ResponseBody
public String addOrder(Integer addressId,User user){
orderService.addOrder(addressId, user);
// 跳轉到支付頁面
return "ok";
}
1.5 修改order-service的yml
spring:
datasource1:
url: jdbc:mysql://localhost:3306/nz1904-springboot-shop
username: root
password: 123456
driver-class-name: com.mysql.jdbc.Driver
aliases: db1
datasource2:
url: jdbc:mysql://localhost:3306/nz1904-springboot-shop-02
username: root
password: 123456
driver-class-name: com.mysql.jdbc.Driver
aliases: db2
redis:
host: 192.168.59.100
password: admin
mybatis-plus:
type-aliases-package: com.wpj.entity
mapper-locations: classpath:/mapper/*.xml
dubbo:
application:
name: order-service
registry:
address: zookeeper://192.168.59.100:2181
protocol:
port: -1
1.6 程序入口忽略自動配置數據源
package com.wpj;
import com.alibaba.dubbo.config.spring.context.annotation.DubboComponentScan;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
@SpringBootApplication(scanBasePackages = "com.wpj", exclude = DataSourceAutoConfiguration.class)
@DubboComponentScan(basePackages = "com.wpj.service")
@MapperScan(basePackages = "com.wpj.mapper")
public class OrderServiceApplication {
public static void main(String[] args) {
SpringApplication.run(OrderServiceApplication.class, args);
}
}
1.7 定義config類
1.7.1 定義BaseDataSource
package com.wpj.config;
import com.zaxxer.hikari.HikariDataSource;
import lombok.Data;
@Data
public class BaseDataSource {
private String url;
private String username;
private String password;
private String driverClassName;
private String aliases;
public HikariDataSource getDataSource(){
HikariDataSource dataSource = new HikariDataSource();
dataSource.setUsername(username);
dataSource.setJdbcUrl(url);
dataSource.setPassword(password);
dataSource.setDriverClassName(driverClassName);
return dataSource;
}
}
1.7.2 定義Order1和Order2DataSource
package com.wpj.config;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
@Component
@ConfigurationProperties(prefix = "spring.datasource1")
public class Order1DataSource extends BaseDataSource {
}
package com.wpj.config;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
@Component
@ConfigurationProperties(prefix = "spring.datasource2")
public class Order2DataSource extends BaseDataSource {
}
1.7.3 定義DynamicDataSource
package com.wpj.config;
import org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource;
import org.springframework.lang.Nullable;
public class DynamicDataSource extends AbstractRoutingDataSource {
private static ThreadLocal<String> threadLocal = new ThreadLocal<>();
@Nullable
@Override
protected Object determineCurrentLookupKey() {
return threadLocal.get();
}
public static void setDbName(String dbName){
threadLocal.set(dbName);
}
}
1.7.4 定義MyBatisConfig
package com.wpj.config;
import com.baomidou.mybatisplus.spring.MybatisSqlSessionFactoryBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
@Configuration
public class MyBatisConfig {
@Autowired
private Order1DataSource order1DataSource;
@Autowired
private Order2DataSource order2DataSource;
@Value("${mybatis-plus.mapper-locations}")
private String mapperLocations;
@Bean
public DynamicDataSource dynamicDataSource(){
// 創建一個動態數據源
DynamicDataSource dataSource = new DynamicDataSource();
Map<Object,Object> map = new HashMap<>();
map.put(order1DataSource.getAliases(),order1DataSource.getDataSource());
map.put(order2DataSource.getAliases(),order2DataSource.getDataSource());
// 把map放進入
dataSource.setTargetDataSources(map);
// 設置默認的數據源
dataSource.setDefaultTargetDataSource(order1DataSource.getDataSource());
return dataSource;
}
@Bean
public MybatisSqlSessionFactoryBean sqlSessionFactoryBean(){
MybatisSqlSessionFactoryBean sqlSessionFactoryBean= new MybatisSqlSessionFactoryBean();
sqlSessionFactoryBean.setDataSource(dynamicDataSource());
sqlSessionFactoryBean.setTypeAliasesPackage("com.wpj.entity");
try {
// 設置mapper的路徑
sqlSessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(mapperLocations));
} catch (IOException e) {
e.printStackTrace();
}
return sqlSessionFactoryBean;
}
}
1.8 Test
2. 分表整合項目中
2.1 shop-mapper修改IOrderMapper接口
package com.wpj.mapper;
import com.wpj.entity.Order;
import org.apache.ibatis.annotations.Param;
import java.util.List;
import java.util.Map;
public interface IOrderMapper {
public int addOrder(@Param("order") Order order, @Param("tabIndex") Integer tabIndx);
void updateOrderState(@Param("map") Map<String, String> map, @Param("tabIndex") Integer tabIndex);
Order selectById(@Param("oid") String oid, @Param("tabIndex") Integer tabIndex);
List<Order> getOrderListByUid(@Param("uid") Integer uid, @Param("tabIndex") Integer tabIndex);
}
2.2 修改IOrderMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.wpj.mapper.IOrderMapper">
<insert id="addOrder">
INSERT INTO t_order${tabIndex} (
id,
total_price,
ocreate_time,
ostatus,
u_id,
person,
phone,
address
)
VALUES
(
#{order.id},
#{order.totalPrice},
#{order.createTime},
#{order.ostatus},
#{order.uid},
#{order.person},
#{order.phone},
#{order.address}
)
</insert>
</mapper>
2.3 修改IOrderDetailMapper接口
package com.wpj.mapper;
import com.wpj.entity.OrderDetail;
import org.apache.ibatis.annotations.Param;
import java.util.List;
public interface IOrderDetailMapper {
public int addBarch(@Param("list") List<OrderDetail> list, @Param("tabIndex") Integer tabIndex);
}
2.4 修改IOrderDetailMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.wpj.mapper.IOrderDetailMapper">
<insert id="addBarch">
INSERT INTO t_order_detail${tabIndex} (
id,
oid,
gid,
gname,
gprice,
gnum,
gcount,
gpic,
gdesc
)
VALUES
<foreach collection="list" item="od" separator=",">
(
#{od.id},
#{od.oid},
#{od.gid},
#{od.gname},
#{od.gprice},
#{od.gnum},
#{od.gcount},
#{od.gpic},
#{od.gdesc}
)
</foreach>
</insert>
</mapper>
2.5 order-service修改ServiceImpl實現類
@Override
public int addBarch(List<OrderDetail> list) {
return 0;
}
2.6 order-service修改ServiceImpl實現類
package com.wpj.service.impl;
import com.alibaba.dubbo.config.annotation.Reference;
import com.alibaba.dubbo.config.annotation.Service;
import com.wpj.common.constant.Constants;
import com.wpj.common.utils.OrderUtils;
import com.wpj.config.DynamicDataSource;
import com.wpj.entity.*;
import com.wpj.mapper.IOrderDetailMapper;
import com.wpj.mapper.IOrderMapper;
import com.wpj.service.IAddressService;
import com.wpj.service.ICartService;
import com.wpj.service.IOrderDetailService;
import com.wpj.service.IOrderService;
import org.springframework.beans.factory.annotation.Autowired;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
@Service
public class OrderServiceImpl implements IOrderService {
@Autowired
private IOrderMapper orderMapper;
@Reference
private IAddressService addressService;
@Reference
private ICartService cartService;
@Autowired
private IOrderDetailMapper orderDetailMapper;
@Autowired
private OrderUtils orderUtils;
@Override
public int addOrder(Integer addressId, User user) {
// 根據地址id查詢地址的對象
Address address = addressService.selectById(addressId);
List<Cart> cartList = cartService.getUserCartList(user,"");
// 插入訂單
Order order = new Order();
String orderId = orderUtils.createOrderId(user.getId());
order.setId(orderId);
order.setUid(user.getId());
order.setPerson(address.getPhone());
order.setAddress(address.getAddress());
order.setCreateTime(new Date());
order.setOstatus(0); // 0 未支付 1 已支付 2 超時 3 取消
order.setPerson(address.getPerson());
order.setTotalPrice(cartService.getTotalPrice(cartList));
// 設置數據源
int tabIndex = setOrderDataSource(user.getId());
orderMapper.addOrder(order,tabIndex);
// 插入訂單詳情
List<OrderDetail> orderDetailList = new ArrayList<>();
for (Cart cart: cartList) {
OrderDetail orderDetail = new OrderDetail();
Goods goods = cart.getGoods();
orderDetail.setGprice(goods.getGprice());
orderDetail.setGpic(goods.getGpic());
orderDetail.setGnum(cart.getNum());
orderDetail.setGname(goods.getGname());
orderDetail.setGid(goods.getId());
orderDetail.setGcount(cart.getSubTotal());
orderDetail.setGdesc(goods.getGdesc());
orderDetailList.add(orderDetail);
if (orderDetailList.size() == 300) {
orderDetailMapper.addBarch(orderDetailList, tabIndex);
orderDetailList.clear();
}
}
if (orderDetailList.isEmpty()){
orderDetailMapper.addBarch(orderDetailList, tabIndex);
}
// 清空購物車
cartService.deleteCartByUid(user.getId());
return 1;
}
/**
* 設置order的數據源
* @param userId
* @return 表的索引
*/
public Integer setOrderDataSource(Integer userId) {
// 獲取用戶id後四位
Integer userIdEnd = Integer.parseInt(orderUtils.getUserIdEnd(userId));
// 根據用戶id後四位獲取數據源編號
Integer dbIndex = (userIdEnd % Constants.ORDER_DB_NUM)+1;
// 設置數據源
DynamicDataSource.setDbName("db"+dbIndex);
// 算出表的索引
Integer tabIndex = (userId/Constants.ORDER_TAB_NUM %Constants.ORDER_TAB_NUM )+1;
return tabIndex;
}
}
2.7 啓動程序入口測試
- 用不同id的用戶取購物，然後查看存放在那些庫中