Spring Boot 2.x基础教程：使用MyBatis的XML配置方式

Author: dyc87112

2.1.x/chapter3-6/.gitignore

@@ -0,0 +1,29 @@
+HELP.md
+/target/
+!.mvn/wrapper/maven-wrapper.jar
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+/build/
+
+### VS Code ###
+.vscode/

2.1.x/chapter3-6/pom.xml

@@ -0,0 +1,55 @@
+<?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"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://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>2.1.3.RELEASE</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+
+	<groupId>com.didispace</groupId>
+	<artifactId>chapter3-6</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+
+	<properties>
+		<java.version>1.8</java.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.mybatis.spring.boot</groupId>
+			<artifactId>mybatis-spring-boot-starter</artifactId>
+			<version>2.1.1</version>
+		</dependency>
+
+		<dependency>
+			<groupId>mysql</groupId>
+			<artifactId>mysql-connector-java</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<scope>provided</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

2.1.x/chapter3-6/src/main/java/com/didispace/chapter36/Chapter36Application.java

@@ -0,0 +1,15 @@
+package com.didispace.chapter36;
+
+import org.mybatis.spring.annotation.MapperScan;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@MapperScan("com.didispace.chapter36.mapper")
+@SpringBootApplication
+public class Chapter36Application {
+
+	public static void main(String[] args) {
+		SpringApplication.run(Chapter36Application.class, args);
+	}
+
+}

2.1.x/chapter3-6/src/main/java/com/didispace/chapter36/entity/User.java

@@ -0,0 +1,20 @@
+package com.didispace.chapter36.entity;
+
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+
+@Data
+@NoArgsConstructor
+public class User {
+
+    private Long id;
+
+    private String name;
+    private Integer age;
+
+    public User(String name, Integer age) {
+        this.name = name;
+        this.age = age;
+    }
+}

2.1.x/chapter3-6/src/main/java/com/didispace/chapter36/mapper/UserMapper.java

@@ -0,0 +1,18 @@
+package com.didispace.chapter36.mapper;
+
+import com.didispace.chapter36.entity.User;
+import org.apache.ibatis.annotations.Param;
+
+/**
+ * Created by 程序猿DD/翟永超 on 2020/2/28.
+ * <p>
+ * Blog: http://blog.didispace.com/
+ * Github: https://github.com/dyc87112/
+ */
+public interface UserMapper {
+
+    User findByName(@Param("name") String name);
+
+    int insert(@Param("name") String name, @Param("age") Integer age);
+
+}

2.1.x/chapter3-6/src/main/resources/application.properties

@@ -0,0 +1,6 @@
+spring.datasource.url=jdbc:mysql://localhost:3306/test
+spring.datasource.username=root
+spring.datasource.password=12345678
+spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
+
+mybatis.mapper-locations=classpath:mapper/*.xml

2.1.x/chapter3-6/src/main/resources/mapper/UserMapper.xml

@@ -0,0 +1,13 @@
+<?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.didispace.chapter36.mapper.UserMapper">
+    <select id="findByName" resultType="com.didispace.chapter36.entity.User">
+        SELECT * FROM USER WHERE NAME = #{name}
+    </select>
+
+    <insert id="insert">
+        INSERT INTO USER(NAME, AGE) VALUES(#{name}, #{age})
+    </insert>
+</mapper>

2.1.x/chapter3-6/src/test/java/com/didispace/chapter36/Chapter36ApplicationTests.java

@@ -0,0 +1,32 @@
+package com.didispace.chapter36;
+
+import com.didispace.chapter36.entity.User;
+import com.didispace.chapter36.mapper.UserMapper;
+import lombok.extern.slf4j.Slf4j;
+import org.junit.Assert;
+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.annotation.Rollback;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.transaction.annotation.Transactional;
+
+@Slf4j
+@RunWith(SpringRunner.class)
+@SpringBootTest
+@Transactional
+public class Chapter36ApplicationTests {
+
+    @Autowired
+    private UserMapper userMapper;
+
+    @Test
+    @Rollback
+    public void test() throws Exception {
+        userMapper.insert("AAA", 20);
+        User u = userMapper.findByName("AAA");
+        Assert.assertEquals(20, u.getAge().intValue());
+    }
+
+}