doing

2.1.x/chapter3-8/.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/chapter3-8/pom.xml

@@ -0,0 +1,65 @@
+<?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>chapter3-8</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<description>使用spring-data-jpa的多数据源配置</description>
+
+	<properties>
+		<java.version>1.8</java.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-actuator</artifactId>
+		</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/chapter3-8/src/main/java/com/didispace/chapter38/Chapter38Application.java

@@ -0,0 +1,25 @@
+package com.didispace.chapter34;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@SpringBootApplication
+public class Chapter34Application {
+
+	public static void main(String[] args) {
+		SpringApplication.run(Chapter34Application.class, args);
+	}
+
+	@RestController
+	static class TextController {
+
+		@GetMapping("/hello")
+		public String hello() {
+			return "hello world";
+		}
+
+	}
+
+}

2.1.x/chapter3-8/src/main/java/com/didispace/chapter38/User.java

@@ -0,0 +1,26 @@
+package com.didispace.chapter34;
+
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+
+@Entity
+@Data
+@NoArgsConstructor
+public class User {
+
+    @Id
+    @GeneratedValue
+    private Long id;
+
+    private String name;
+    private Integer age;
+
+    public User(String name, Integer age) {
+        this.name = name;
+        this.age = age;
+    }
+}

2.1.x/chapter3-8/src/main/java/com/didispace/chapter38/UserRepository.java

@@ -0,0 +1,22 @@
+package com.didispace.chapter34;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+
+/**
+ * Created by 程序猿DD/翟永超 on 2020/2/15.
+ * <p>
+ * Blog: http://blog.didispace.com/
+ * Github: https://github.com/dyc87112/
+ */
+public interface UserRepository extends JpaRepository<User, Long> {
+
+    User findByName(String name);
+
+    User findByNameAndAge(String name, Integer age);
+
+    @Query("from User u where u.name=:name")
+    User findUser(@Param("name") String name);
+
+}

2.1.x/chapter3-8/src/main/resources/application.properties

@@ -0,0 +1,6 @@
+spring.datasource.url=jdbc:mysql://localhost:3306/test
+spring.datasource.username=root
+spring.datasource.password=
+spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
+
+spring.jpa.properties.hibernate.hbm2ddl.auto=create-drop

2.1.x/chapter3-8/src/test/java/com/didispace/chapter34/Chapter34ApplicationTests.java

@@ -0,0 +1,57 @@
+package com.didispace.chapter34;
+
+import lombok.extern.slf4j.Slf4j;
+import org.junit.Assert;
+import org.junit.Before;
+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;
+
+import javax.sql.DataSource;
+import java.util.List;
+
+@Slf4j
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class Chapter34ApplicationTests {
+
+    @Autowired
+    private UserRepository userRepository;
+
+    @Test
+    public void test() throws Exception {
+        // 创建10条记录
+        userRepository.save(new User("AAA", 10));
+        userRepository.save(new User("BBB", 20));
+        userRepository.save(new User("CCC", 30));
+        userRepository.save(new User("DDD", 40));
+        userRepository.save(new User("EEE", 50));
+        userRepository.save(new User("FFF", 60));
+        userRepository.save(new User("GGG", 70));
+        userRepository.save(new User("HHH", 80));
+        userRepository.save(new User("III", 90));
+        userRepository.save(new User("JJJ", 100));
+
+        // 测试findAll, 查询所有记录
+        Assert.assertEquals(10, userRepository.findAll().size());
+
+        // 测试findByName, 查询姓名为FFF的User
+        Assert.assertEquals(60, userRepository.findByName("FFF").getAge().longValue());
+
+        // 测试findUser, 查询姓名为FFF的User
+        Assert.assertEquals(60, userRepository.findUser("FFF").getAge().longValue());
+
+        // 测试findByNameAndAge, 查询姓名为FFF并且年龄为60的User
+        Assert.assertEquals("FFF", userRepository.findByNameAndAge("FFF", 60).getName());
+
+        // 测试删除姓名为AAA的User
+        userRepository.delete(userRepository.findByName("AAA"));
+
+        // 测试findAll, 查询所有记录, 验证上面的删除是否成功
+        Assert.assertEquals(9, userRepository.findAll().size());
+
+    }
+
+}

2.1.x/chapter3-9/.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/chapter3-9/pom.xml

@@ -0,0 +1,56 @@
+<?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>chapter3-9</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<description>使用MyBatis的多数据源配置</description>
+
+	<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/chapter3-9/src/main/java/com/didispace/chapter39/Chapter39Application.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/chapter3-9/src/main/java/com/didispace/chapter39/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/chapter3-9/src/main/java/com/didispace/chapter39/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/chapter3-9/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