chen

spring-boot-jdbctemplate/src/main/resources/application.properties

@@ -7,3 +7,5 @@ spring.datasource.username=root
 # 配置数据库密码
 spring.datasource.password=Easy@0122
 
+# 指定MyBatis配置文件位置
+mybatis.mapper-locations=classpath:mapper/*.xml
\ No newline at end of file

spring-boot-mybatis/pom.xml

 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.2.6.RELEASE</version>
-		<relativePath/> <!-- lookup parent from repository -->
+		<version>2.2.5.RELEASE</version>
+		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.imooc</groupId>
 	<artifactId>spring-boot-mybatis</artifactId>
@@ -23,7 +24,39 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter</artifactId>
 		</dependency>
-
+		<!-- 热部署 -->
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-devtools</artifactId>
+		</dependency>
+		<!-- web -->
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+		<!-- jdbc -->
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-jdbc</artifactId>
+		</dependency>
+		<!-- myql驱动 -->
+		<dependency>
+			<groupId>mysql</groupId>
+			<artifactId>mysql-connector-java</artifactId>
+		</dependency>
+		<!-- 集成mybatis -->
+		<dependency>
+			<groupId>org.mybatis.spring.boot</groupId>
+			<artifactId>mybatis-spring-boot-starter</artifactId>
+			<version>2.1.2</version>
+		</dependency>
+		<!-- junit -->
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<!-- 测试 -->
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>

spring-boot-mybatis/src/main/java/com/imooc/springbootmybatis/GoodsDao.java

+package com.imooc.springbootmybatis;
+
+import java.util.List;
+
+import org.springframework.stereotype.Repository;
+
+/**
+ * 商品数据库访问接口
+ */
+@Repository // 标注数据访问组件
+public interface GoodsDao {
+	/**
+	 * 新增商品
+	 */
+	public int insert(GoodsDo Goods);
+
+	/**
+	 * 删除商品(根据id)
+	 */
+	public int delete(Long id);
+
+	/**
+	 * 修改商品信息(根据id修改其他属性值)
+	 */
+	public int update(GoodsDo Goods);
+
+	/**
+	 * 查询商品信息(根据id查询单个商品信息)
+	 */
+	public GoodsDo selectOne(Long id);
+
+	/**
+	 * 查询商品列表
+	 */
+	public List<GoodsDo> selectAll();
+}

spring-boot-mybatis/src/main/java/com/imooc/springbootmybatis/GoodsDo.java

+package com.imooc.springbootmybatis;
+
+/**
+ * 商品类
+ */
+public class GoodsDo {
+	/**
+	 * 商品id
+	 */
+	private Long id;
+
+	/**
+	 * 商品名称
+	 */
+	private String name;
+	/**
+	 * 商品价格
+	 */
+	private String price;
+	/**
+	 * 商品图片
+	 */
+	private String pic;
+
+	// 省略 get set方法
+
+	public Long getId() {
+		return id;
+	}
+
+	public void setId(Long id) {
+		this.id = id;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public String getPrice() {
+		return price;
+	}
+
+	public void setPrice(String price) {
+		this.price = price;
+	}
+
+	public String getPic() {
+		return pic;
+	}
+
+	public void setPic(String pic) {
+		this.pic = pic;
+	}
+
+
+}

spring-boot-mybatis/src/main/java/com/imooc/springbootmybatis/SpringBootMybatisApplication.java

 package com.imooc.springbootmybatis;
 
+import org.mybatis.spring.annotation.MapperScan;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
 @SpringBootApplication
+@MapperScan("com.imooc.springbootmybatis") // 指定MyBatis扫描的包，以便将数据访问接口注册为bean
 public class SpringBootMybatisApplication {
 
 	public static void main(String[] args) {

spring-boot-mybatis/src/main/resources/application.properties

+# 配置数据库驱动
+spring.datasource.driver-class-name=com.mysql.jdbc.Driver
+# 配置数据库url
+spring.datasource.url=jdbc:mysql://127.0.0.1:3306/shop?useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC
+# 配置数据库用户名
+spring.datasource.username=root
+# 配置数据库密码
+spring.datasource.password=Easy@0122
 
+mybatis.mapper-locations=classpath:mapper/*.xml
\ No newline at end of file

spring-boot-mybatis/src/main/resources/mapper/Goods.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">
+<!-- 本映射文件对应GoodsDao接口 -->
+<mapper namespace="com.imooc.springbootmybatis.GoodsDao">
+	<!-- 对应GoodsDao中的insert方法 -->
+	<insert id="insert" parameterType="com.imooc.springbootmybatis.GoodsDo">
+		insert into goods (name,price,pic) values (#{name},#{price},#{pic})
+	</insert>
+	<!-- 对应GoodsDao中的delete方法 -->
+	<delete id="delete" parameterType="java.lang.Long">
+		delete from goods where id=#{id}
+	</delete>
+	<!-- 对应GoodsDao中的update方法 -->
+	<update id="update" parameterType="com.imooc.springbootmybatis.GoodsDo">
+		update goods set name=#{name},price=#{price},pic=#{pic} where id=#{id}
+	</update>
+	<!-- 对应GoodsDao中的selectOne方法 -->
+	<select id="selectOne" resultMap="resultMapBase" parameterType="java.lang.Long">
+		select <include refid="sqlBase" /> from goods where id = #{id}
+	</select>
+	<!-- 对应GoodsDao中的selectAll方法 -->
+	<select id="selectAll" resultMap="resultMapBase">
+		select <include refid="sqlBase" /> from goods
+	</select>
+	<!-- 可服用的sql模板 -->
+	<sql id="sqlBase">
+		id,name,price,pic
+	</sql>
+	<!-- 保存SQL语句查询结果与实体类属性的映射 -->
+	<resultMap id="resultMapBase" type="com.imooc.springbootmybatis.GoodsDo">
+		<id column="id" property="id" />
+		<result column="name" property="name" />
+		<result column="price" property="price" />
+		<result column="pic" property="pic" />
+	</resultMap>
+</mapper>
\ No newline at end of file

spring-boot-mybatis/src/test/java/com/imooc/springbootmybatis/GoodsDaoTest.java

+package com.imooc.springbootmybatis;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.List;
+
+import org.junit.FixMethodOrder;
+import org.junit.jupiter.api.Test;
+import org.junit.runners.MethodSorters;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+/**
+ * GoodsDao测试类
+ */
+@SpringBootTest
+@FixMethodOrder(MethodSorters.NAME_ASCENDING) // 按方法名称顺序测试
+class GoodsDaoTest {
+
+	@Autowired
+	private GoodsDao goodsDao;
+
+	/**
+	 * 新增一个商品
+	 */
+	@Test
+	void test_01() {
+		GoodsDo goods = new GoodsDo();
+		goods.setName("手机");
+		goods.setPic("phone.jpg");
+		goods.setPrice("2000");
+		int count = goodsDao.insert(goods);
+		assertEquals(1, count);// count值为1则测试通过
+	}
+
+	/**
+	 * 更新商品信息
+	 */
+	@Test
+	void test_02() {
+		GoodsDo goods = new GoodsDo();
+		goods.setId(1L);
+		goods.setName("手机");
+		goods.setPic("phone.jpg");
+		goods.setPrice("3000");
+		int count = goodsDao.update(goods);
+		assertEquals(1, count);// count值为1则测试通过
+	}
+
+	/**
+	 * 获取商品信息
+	 */
+	@Test
+	void test_03() {
+		GoodsDo goods = goodsDao.selectOne(1L);
+		assertNotNull(goods);// goods不为null则测试通过
+	}
+
+	/**
+	 * 删除商品
+	 */
+	@Test
+	void test_04() {
+		int count = goodsDao.delete(1L);
+		assertEquals(1, count);// count值为1则测试通过
+	}
+
+	/**
+	 * 获取商品信息列表
+	 */
+	@Test
+	void test_05() {
+		List<GoodsDo> goodsList = goodsDao.selectAll();
+		assertEquals(0, goodsList.size());// goodsList.size()值为0则测试通过
+	}
+}

spring-boot-mybatis/src/test/java/com/imooc/springbootmybatis/SpringBootMybatisApplicationTests.java

-package com.imooc.springbootmybatis;
-
-import org.junit.jupiter.api.Test;
-import org.springframework.boot.test.context.SpringBootTest;
-
-@SpringBootTest
-class SpringBootMybatisApplicationTests {
-
-	@Test
-	void contextLoads() {
-	}
-
-}