把 mybatis 整合到其中

product/product-application/pom.xml

@@ -22,6 +22,19 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-jdbc</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.mybatis.spring.boot</groupId>
+            <artifactId>mybatis-spring-boot-starter</artifactId>
+            <version>2.0.0</version>
+        </dependency>
 
         <dependency>
             <groupId>org.springframework.boot</groupId>

product/product-application/src/main/java/cn/iocoder/mall/product/ProductRestApplication.java

 package cn.iocoder.mall.product;
 
+import org.mybatis.spring.annotation.MapperScan;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.ConfigurableApplicationContext;
+
+import javax.sql.DataSource;
 
 @SpringBootApplication
+@MapperScan("cn.iocoder.mall.product.dao") // 扫描对应的 Mapper 接口
 public class ProductRestApplication {
 
 	public static void main(String[] args) {
-		SpringApplication.run(ProductRestApplication.class, args);
+		ConfigurableApplicationContext ctx = SpringApplication.run(ProductRestApplication.class, args);
+		DataSource ds = ctx.getBean(DataSource.class);
+		System.out.println(ds);
 	}
 
 }
\ No newline at end of file

product/product-application/src/main/java/cn/iocoder/mall/product/controller/ProductCategoryController.java → product/product-application/src/main/java/cn/iocoder/mall/product/controller/user/ProductCategoryController.java

-package cn.iocoder.mall.product.controller;
+package cn.iocoder.mall.product.controller.user;
 
 import cn.iocoder.mall.product.vo.ProductCategoryVO;
 import org.springframework.web.bind.annotation.GetMapping;
@@ -10,7 +10,7 @@ import java.util.ArrayList;
 import java.util.List;
 
 @RestController
-@RequestMapping("/product/category")
+@RequestMapping("user/product/category")
 public class ProductCategoryController {
 
     // TODO 获得父编号为 id 的分类们 后面，使用 swagger 注释

product/product-application/src/main/java/cn/iocoder/mall/product/controller/ProductSpuController.java → product/product-application/src/main/java/cn/iocoder/mall/product/controller/user/ProductSpuController.java

-package cn.iocoder.mall.product.controller;
+package cn.iocoder.mall.product.controller.user;
 
 import cn.iocoder.mall.product.bo.ProductSpuBO;
 import cn.iocoder.mall.product.service.ProductSpuService;
@@ -10,7 +10,7 @@ import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
 @RestController
-@RequestMapping("/product/spu")
+@RequestMapping("user/product/spu")
 public class ProductSpuController {
 
     @Autowired

product/product-application/src/main/java/cn/iocoder/mall/product/dao/ProductSpuDAO.java → product/product-application/src/main/java/cn/iocoder/mall/product/dao/ProductSpuMapper.java

@@ -4,12 +4,8 @@ import cn.iocoder.mall.product.dataobject.ProductSpuDO;
 import org.springframework.stereotype.Repository;
 
 @Repository
-public class ProductSpuDAO {
+public interface ProductSpuMapper {
 
-    public ProductSpuDO selectById(Integer id) {
-        ProductSpuDO spu = new ProductSpuDO();
-        spu.setId(id);
-        return spu;
-    }
+    ProductSpuDO selectById(Integer id);
 
 }
\ No newline at end of file

product/product-application/src/main/java/cn/iocoder/mall/product/service/ProductSpuService.java

 package cn.iocoder.mall.product.service;
 
 import cn.iocoder.mall.product.bo.ProductSpuBO;
-import cn.iocoder.mall.product.dao.ProductSpuDAO;
+import cn.iocoder.mall.product.dao.ProductSpuMapper;
 import cn.iocoder.mall.product.dataobject.ProductSpuDO;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
@@ -11,7 +11,7 @@ import org.springframework.stereotype.Service;
 public class ProductSpuService implements cn.iocoder.mall.product.service.api.ProductSpuService {
 
     @Autowired
-    private ProductSpuDAO productSpuDAO;
+    private ProductSpuMapper productSpuDAO;
 
     public ProductSpuBO getProductSpu(Integer id) {
         ProductSpuDO productSpuDO = productSpuDAO.selectById(id);

product/product-application/src/main/resources/application.yaml

+spring:
+  # datasource
+  datasource:
+    url: jdbc:mysql://127.0.0.1:33061/mall_product?useSSL=false
+    driver-class-name: com.mysql.jdbc.Driver
+    username: root
+    password: 123456
+
+# mybatis
+mybatis:
+  config-location: classpath:mybatis/mybatis-config.xml
+  mapper-locations: classpath:mybatis/mapper/*.xml
+  type-aliases-package: cn.iocoder.mall.product.dataobject
\ No newline at end of file

product/product-application/src/main/resources/mybatis/mapper/ProductCategoryMapper.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="cn.iocoder.mall.product.dao.ProductSpuMapper">
+
+    <select id="selectById" parameterType="Integer" resultType="ProductSpuDO">
+        SELECT
+          id
+        FROM product_spu
+        WHERE id = #{id}
+    </select>
+
+</mapper>
\ No newline at end of file

product/product-application/src/main/resources/mybatis/mybatis-config.xml

+<?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>
\ No newline at end of file