Mybatis-spring-boot整合

1.环境

• jdk8
• mybatis-spring-boot-starter 2.1.0
• springboot 2.2.1.BUILD-SNAPSHOT

2.核心类分析

分析之前，建议查看下面链接 ,有利于理解本文内容

MybatisAutoConfiguration：springboot启动自动加载配置，配置中初始化SqlSessionFactory、

SqlSessionTemplate 和MapperFactoryBean

下面是流程图

mybatis-spring-boot-1.png

3.示例代码

3.1.工程结构图

├── pom.xml
├── src
│   ├── main
│   │   ├── java
│   │   │   └── com
│   │   │       └── zzm
│   │   │           ├── ArtsTenMybatisSpringBootApplication.java
│   │   │           ├── config
│   │   │           │   └── MybatisInterceptorConfiguration.java
│   │   │           ├── dao
│   │   │           │   └── BlogMapper.java
│   │   │           ├── entity
│   │   │           │   ├── Blog.java
│   │   │           │   ├── CompanyDto.java
│   │   │           │   └── UserTest.java
│   │   │           └── intercept
│   │   │               └── ExamplePlugin.java
│   │   └── resources
│   │       ├── application.yml
│   │       ├── mapper
│   │       │   └── BlogMapper.xml
│   │       ├── static
│   │       └── templates

3.2.pom依赖

……………………
<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
   <!-- mybatis springboot 集成依赖-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.0</version>
        </dependency>
     <!--mysql依赖 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
  …………………………

3.3. MybatisInterceptorConfiguration自定配置mybatis属性

• Interceptor插件
• TypeHandler类型转换器
• LanguageDriver
• DatabaseIdProvider 数据库提供商配置

@Configuration
@EnableAutoConfiguration
public class MybatisInterceptorConfiguration {

    @Bean
    public ExamplePlugin myInterceptor() {
        return new ExamplePlugin();
    }

}

3.4.application.yml配置

server:
  port: 8082

management:
  endpoints:
    web:
      exposure:
        exclude: '*'

spring:
  datasource:
    password: 123456
    username: root
    url: jdbc:mysql://localhost:3306/test
<!-- sql打印日志级别--->
logging:
  level:
    root: info
    com:
      zzm:
        dao: trace
<!-- mybatis扫描xml配置路径-->
mybatis:
  mapper-locations: classpath*:/mapper/*.xml

4. Configuration

它是mybatis-springboot配置mybatis中属性，例如 mapper-locations、type-handlers-package等

代码地址

参考链接