✨ spring-boot-demo-multi-datasource-mybatis 完成

TODO.md

@@ -1,5 +1,5 @@
 # spring-boot-demo 项目 todo-list
-## 模块计划(已完成：40 / 51)
+## 模块计划(已完成：41 / 51)
 
 - [x] ~~spring-boot-demo-helloworld（Helloworld 示例）~~
 - [x] ~~spring-boot-demo-properties（读取配置文件信息）~~
@@ -49,7 +49,7 @@
 - [x] ~~spring-boot-demo-mongodb（集成 MongoDb）~~
 - [x] ~~spring-boot-demo-neo4j（集成 neo4j 图数据库）~~
 - [x] ~~spring-boot-demo-docker（打包成 docker 镜像）~~
-- [ ] spring-boot-demo-multi-datasource-jpa（集成JPA多数据源）
+- [x] ~~spring-boot-demo-multi-datasource-jpa（集成JPA多数据源）~~
 - [ ] spring-boot-demo-multi-datasource-mybatis（集成mybatis多数据源）
 - [ ] spring-boot-demo-sharding-jdbc（集成 sharding-jdbc 实现分库分表）
 

spring-boot-demo-multi-datasource-mybatis/pom.xml

@@ -33,6 +33,39 @@
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
         </dependency>
+
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>com.baomidou</groupId>
+            <artifactId>dynamic-datasource-spring-boot-starter</artifactId>
+            <version>2.5.0</version>
+        </dependency>
+
+        <dependency>
+            <groupId>com.baomidou</groupId>
+            <artifactId>mybatis-plus-boot-starter</artifactId>
+            <version>3.0.7.1</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <optional>true</optional>
+        </dependency>
+
+        <dependency>
+            <groupId>cn.hutool</groupId>
+            <artifactId>hutool-all</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+        </dependency>
     </dependencies>
 
     <build>

spring-boot-demo-multi-datasource-mybatis/sql/db.sql

@@ -0,0 +1,10 @@
+DROP TABLE IF EXISTS `multi_user`;
+CREATE TABLE `multi_user`(
+  `id` bigint(64) NOT NULL,
+  `name` varchar(50) DEFAULT NULL,
+  `age` int(30) DEFAULT NULL,
+  PRIMARY KEY (`id`) USING BTREE
+) ENGINE = InnoDB
+  AUTO_INCREMENT = 1
+  CHARACTER SET = utf8
+  COLLATE = utf8_general_ci;

spring-boot-demo-multi-datasource-mybatis/src/main/java/com/xkcoding/multi/datasource/mybatis/SpringBootDemoMultiDatasourceMybatisApplication.java

@@ -1,9 +1,24 @@
 package com.xkcoding.multi.datasource.mybatis;
 
+import org.mybatis.spring.annotation.MapperScan;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
+/**
+ * <p>
+ * 启动器
+ * </p>
+ *
+ * @package: com.xkcoding.multi.datasource.mybatis
+ * @description: 启动器
+ * @author: yangkai.shen
+ * @date: Created in 2019-01-21 14:19
+ * @copyright: Copyright (c) 2019
+ * @version: V1.0
+ * @modified: yangkai.shen
+ */
 @SpringBootApplication
+@MapperScan(basePackages = "com.xkcoding.multi.datasource.mybatis.mapper")
 public class SpringBootDemoMultiDatasourceMybatisApplication {
 
     public static void main(String[] args) {

spring-boot-demo-multi-datasource-mybatis/src/main/java/com/xkcoding/multi/datasource/mybatis/mapper/UserMapper.java

@@ -0,0 +1,20 @@
+package com.xkcoding.multi.datasource.mybatis.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.xkcoding.multi.datasource.mybatis.model.User;
+
+/**
+ * <p>
+ * 数据访问层
+ * </p>
+ *
+ * @package: com.xkcoding.multi.datasource.mybatis.mapper
+ * @description: 数据访问层
+ * @author: yangkai.shen
+ * @date: Created in 2019-01-21 14:28
+ * @copyright: Copyright (c) 2019
+ * @version: V1.0
+ * @modified: yangkai.shen
+ */
+public interface UserMapper extends BaseMapper<User> {
+}

spring-boot-demo-multi-datasource-mybatis/src/main/java/com/xkcoding/multi/datasource/mybatis/model/User.java

@@ -0,0 +1,49 @@
+package com.xkcoding.multi.datasource.mybatis.model;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.io.Serializable;
+
+/**
+ * <p>
+ * User实体类
+ * </p>
+ *
+ * @package: com.xkcoding.multi.datasource.mybatis.model
+ * @description: User实体类
+ * @author: yangkai.shen
+ * @date: Created in 2019-01-21 14:19
+ * @copyright: Copyright (c) 2019
+ * @version: V1.0
+ * @modified: yangkai.shen
+ */
+@Data
+@TableName("multi_user")
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+public class User implements Serializable {
+    private static final long serialVersionUID = -1923859222295750467L;
+
+    /**
+     * 主键
+     */
+    @TableId(type = IdType.ID_WORKER)
+    private Long id;
+
+    /**
+     * 姓名
+     */
+    private String name;
+
+    /**
+     * 年龄
+     */
+    private Integer age;
+}

spring-boot-demo-multi-datasource-mybatis/src/main/java/com/xkcoding/multi/datasource/mybatis/service/UserService.java

@@ -0,0 +1,27 @@
+package com.xkcoding.multi.datasource.mybatis.service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import com.xkcoding.multi.datasource.mybatis.model.User;
+
+/**
+ * <p>
+ * 数据服务层
+ * </p>
+ *
+ * @package: com.xkcoding.multi.datasource.mybatis.service
+ * @description: 数据服务层
+ * @author: yangkai.shen
+ * @date: Created in 2019-01-21 14:31
+ * @copyright: Copyright (c) 2019
+ * @version: V1.0
+ * @modified: yangkai.shen
+ */
+public interface UserService extends IService<User> {
+
+    /**
+     * 添加 User
+     *
+     * @param user 用户
+     */
+    void addUser(User user);
+}

spring-boot-demo-multi-datasource-mybatis/src/main/java/com/xkcoding/multi/datasource/mybatis/service/impl/UserServiceImpl.java

@@ -0,0 +1,39 @@
+package com.xkcoding.multi.datasource.mybatis.service.impl;
+
+import com.baomidou.dynamic.datasource.annotation.DS;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.xkcoding.multi.datasource.mybatis.mapper.UserMapper;
+import com.xkcoding.multi.datasource.mybatis.model.User;
+import com.xkcoding.multi.datasource.mybatis.service.UserService;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+/**
+ * <p>
+ * TODO
+ * </p>
+ *
+ * @package: com.xkcoding.multi.datasource.mybatis.service.impl
+ * @description: TODO
+ * @author: yangkai.shen
+ * @date: Created in 2019-01-21 14:37
+ * @copyright: Copyright (c) 2019
+ * @version: V1.0
+ * @modified: yangkai.shen
+ */
+@Service
+@DS("slave")
+public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {
+
+    /**
+     * 类上 {@code @DS("slave")} 代表默认从库，在方法上写 {@code @DS("master")} 代表默认主库
+     *
+     * @param user 用户
+     */
+    @DS("master")
+    @Override
+    public void addUser(User user) {
+        baseMapper.insert(user);
+    }
+}

spring-boot-demo-multi-datasource-mybatis/src/main/resources/application.yml

@@ -0,0 +1,18 @@
+spring:
+  datasource:
+    dynamic:
+      datasource:
+        master:
+          username: root
+          password: root
+          url: jdbc:mysql://127.0.0.1:3306/spring-boot-demo?useUnicode=true&characterEncoding=UTF-8&useSSL=false&autoReconnect=true&failOverReadOnly=false&serverTimezone=GMT%2B8
+          driver-class-name: com.mysql.cj.jdbc.Driver
+        slave:
+          username: root
+          password: root
+          url: jdbc:mysql://127.0.0.1:3306/spring-boot-demo-2?useUnicode=true&characterEncoding=UTF-8&useSSL=false&autoReconnect=true&failOverReadOnly=false&serverTimezone=GMT%2B8
+          driver-class-name: com.mysql.cj.jdbc.Driver
+      mp-enabled: true
+logging:
+  level:
+    com.xkcoding.multi.datasource.mybatis: debug

spring-boot-demo-multi-datasource-mybatis/src/test/java/com/xkcoding/multi/datasource/mybatis/service/impl/UserServiceImplTest.java

@@ -0,0 +1,52 @@
+package com.xkcoding.multi.datasource.mybatis.service.impl;
+
+import cn.hutool.json.JSONUtil;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.xkcoding.multi.datasource.mybatis.SpringBootDemoMultiDatasourceMybatisApplicationTests;
+import com.xkcoding.multi.datasource.mybatis.model.User;
+import com.xkcoding.multi.datasource.mybatis.service.UserService;
+import lombok.extern.slf4j.Slf4j;
+import org.junit.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import java.util.List;
+
+/**
+ * <p>
+ * 测试主从数据源
+ * </p>
+ *
+ * @package: com.xkcoding.multi.datasource.mybatis.service.impl
+ * @description: 测试主从数据源
+ * @author: yangkai.shen
+ * @date: Created in 2019-01-21 14:45
+ * @copyright: Copyright (c) 2019
+ * @version: V1.0
+ * @modified: yangkai.shen
+ */
+@Slf4j
+public class UserServiceImplTest extends SpringBootDemoMultiDatasourceMybatisApplicationTests {
+    @Autowired
+    private UserService userService;
+
+    /**
+     * 主从库添加
+     */
+    @Test
+    public void addUser() {
+        User userMaster = User.builder().name("主库添加").age(20).build();
+        userService.addUser(userMaster);
+
+        User userSlave = User.builder().name("从库添加").age(20).build();
+        userService.save(userSlave);
+    }
+
+    /**
+     * 从库查询
+     */
+    @Test
+    public void testListUser() {
+        List<User> list = userService.list(new QueryWrapper<>());
+        log.info("【list】= {}", JSONUtil.toJsonStr(list));
+    }
+}