springboot集成mybatis

springboot集成mybatis

application.yml

从哪里找到这些配置项:

springboot 本身的配置项

https://docs.spring.io/spring-boot/docs/current/reference/html/common-application-properties.html

mybatis的配置项

http://www.mybatis.org/spring-boot-starter/mybatis-spring-boot-autoconfigure/

阿里 druid的配置项

https://github.com/alibaba/druid/blob/master/druid-spring-boot-starter/src/test/resources/application.properties

不一样的环境使用不一样的数据源

使用 spring.profiles实现
参考: https://docs.spring.io/spring-boot/docs/current/reference/html/howto-properties-and-configuration.html#howto-change-configuration-depending-on-the-environment

A YAML file is actually a sequence of documents separated by --- lines, and each document is parsed separately to a flattened map.

If a YAML document contains a spring.profiles key, then the profiles value (a comma-separated list of profiles) is fed into the Spring Environment.acceptsProfiles() method. If any of those profiles is active, that document is included in the final merge (otherwise, it is not), as shown in the following example:

server:
	port: 9000
---

spring:
	profiles: development
server:
	port: 9001

---

spring:
	profiles: production
server:
	port: 0

gradle 配置依赖

//配置mybatis
    compile "org.mybatis.spring.boot:mybatis-spring-boot-starter:1.1.1"
	compile 'com.alibaba:druid-spring-boot-starter:1.1.9'
    compile 'com.alibaba:druid:1.1.9'

主类指定mapper的路径

@SpringBootApplication
@EnableTransactionManagement
@MapperScan("com.xxsoft.mapper")  //扫描的是mapper.xml中namespace指向值的包位置
@ServletComponentScan //配置druid必须加的注解，若是不加，访问页面打不开，filter和servlet、listener之类的须要单独进行注册才能使用，spring boot里面提供了该注解起到注册做用
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}