feat: 分库分表

src/main/java/com/yupi/project/mapper/OrderConfigMapper.java

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+package com.yupi.project.mapper;
+
+import com.yupi.project.model.entity.OrderConfigDO;
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
+
+/**
+ * @author Administrator
+ */
+@Mapper
+public interface OrderConfigMapper {
+
+    OrderConfigDO selectById(@Param("id") Integer id);
+
+}

src/main/java/com/yupi/project/mapper/OrderMapper.java

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+package com.yupi.project.mapper;
+import com.yupi.project.model.entity.OrderDO;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface OrderMapper {
+
+
+
+    void insert(OrderDO order);
+
+}

src/main/java/com/yupi/project/model/entity/OrderConfigDO.java

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+package com.yupi.project.model.entity;
+
+import lombok.Data;
+
+import java.io.Serializable;
+
+/**
+ * 订单配置 DO
+ */
+@Data
+public class OrderConfigDO implements Serializable {
+
+    /**
+     * 编号
+     */
+    private Integer id;
+    /**
+     * 支付超时时间
+     *
+     * 单位：分钟
+     */
+    private Integer payTimeout;
+
+    // ... 省略 setting/getting 方法
+}

src/main/java/com/yupi/project/model/entity/OrderDO.java

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+package com.yupi.project.model.entity;
+
+import lombok.Data;
+
+import java.io.Serializable;
+
+/**
+ * 订单 DO
+ * @author Administrator
+ */
+@Data
+public class OrderDO implements Serializable {
+
+    /**
+     * 订单编号
+     */
+    private Long id;
+    /**
+     * 用户编号
+     */
+    private Integer userId;
+
+}

src/main/resources/mapper/OrderConfigMapper.xml

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+<?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.yupi.project.mapper.OrderConfigMapper">
+
+    <resultMap id="BaseResultMap" type="com.yupi.project.model.entity.OrderConfigDO">
+        <id property="id" column="id" jdbcType="INTEGER"/>
+        <id property="payTimeout" column="pay_timeout" jdbcType="INTEGER"/>
+    </resultMap>
+
+
+    <sql id="FIELDS">
+        id, pay_timeout
+    </sql>
+
+    <select id="selectById" parameterType="Integer" resultMap="BaseResultMap">
+        SELECT
+        <include refid="FIELDS" />
+        FROM order_config
+        WHERE id = #{id}
+    </select>
+
+</mapper>

src/main/resources/mapper/OrderMapper.xml

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+<?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.yupi.project.mapper.OrderMapper">
+
+    <resultMap id="BaseResultMap" type="com.yupi.project.model.entity.OrderDO">
+        <id property="userId" column="user_id" jdbcType="INTEGER"/>
+    </resultMap>
+
+
+    <insert id="insert" parameterType="OrderDO" useGeneratedKeys="true" keyProperty="id">
+        INSERT INTO orders (id, user_id)
+        VALUES (#{id}, #{userId})
+    </insert>
+
+</mapper>

src/main/resources/mybatis-config.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
+<configuration>
+
+
+    <settings>
+        <!-- 使用驼峰命名法转换字段。 -->
+        <setting name="mapUnderscoreToCamelCase" value="true"/>
+    </settings>
+
+    <typeAliases>
+        <typeAlias alias="Integer" type="java.lang.Integer"/>
+        <typeAlias alias="Long" type="java.lang.Long"/>
+        <typeAlias alias="HashMap" type="java.util.HashMap"/>
+        <typeAlias alias="LinkedHashMap" type="java.util.LinkedHashMap"/>
+        <typeAlias alias="ArrayList" type="java.util.ArrayList"/>
+        <typeAlias alias="LinkedList" type="java.util.LinkedList"/>
+    </typeAliases>
+
+</configuration>

src/test/java/com/yupi/project/service/OrderConfigMapperTest.java

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+package com.yupi.project.service;
+
+import com.yupi.project.mapper.OrderConfigMapper;
+import com.yupi.project.model.entity.OrderConfigDO;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class OrderConfigMapperTest {
+
+    @Autowired
+    private OrderConfigMapper orderConfigMapper;
+
+    @Test
+    public void testSelectById() {
+        OrderConfigDO orderConfig = orderConfigMapper.selectById(1);
+        System.out.println(orderConfig);
+    }
+
+}

src/test/java/com/yupi/project/service/OrderMapperTest.java

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+package com.yupi.project.service;
+
+import com.yupi.project.mapper.OrderMapper;
+import com.yupi.project.model.entity.OrderDO;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class OrderMapperTest {
+
+    @Autowired
+    private OrderMapper orderMapper;
+
+
+    @Test
+    public void testInsert() {
+        OrderDO order = new OrderDO();
+        order.setId(2L);
+        order.setUserId(4);
+        orderMapper.insert(order);
+    }
+
+}