스프링부트 HikariCP MyBatis 추가 설정이다.

개발 환경

• OS: Window 10
• Dev Tool: Eclipse IDE 2019-06
• JDK: 1.8(_221)
• JAVA: 8
• Framework: Springboot v2.1.7
• Build Tool: Gradle v3
• RDBMS: MariaDB
  • DBCP: hikariCP
  • Persistence Framework: MyBatis

HikariCP 설정

HikariCP + MySQL 관련 추가 설정하는 방법이다.

application.properties

spring.datasource.hikari.pool-name=NEO-HikariCP //pool이름
spring.datasource.hikari.maximum-pool-size=10
spring.datasource.hikari.data-source-properties.cachePrepStmts=true
spring.datasource.hikari.data-source-properties.prepStmtCacheSize=250
spring.datasource.hikari.data-source-properties.prepStmtCacheSqlLimit=2048
spring.datasource.hikari.data-source-properties.useServerPrepStmts=true

MyBatis 설정

스프링 mybatis 추가 설정을 관리하기 위해 src/main/resource 경로에 “mybatis-config.xml” 파일를 생성한다.

mybatis-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>
    <settings>
        <setting name="cacheEnabled" value="true" />
        <setting name="useGeneratedKeys" value="false" />
        <setting name="mapUnderscoreToCamelCase" value="true" />
    </settings>
    <typeAliases>
    	<typeAlias type="neo.apps.board.dto.BoardDto" alias="BoardDto" />
    </typeAliases>
</configuration>

예를 들어 테이블 컬럼명이 HIT_CNT이여도 자바객체에서 hitCnt로 맵핑

<setting name="mapUnderscoreToCamelCase" value="true" />

해당 mybatis-config.xml 설정을 사용하기 위해 DatabaseConfiguration.java에 아래와 같이 추가한다. (만약, Springboot이 지원하는 properties방식으로 사용할려면 setConfiguration 키워드로 구글검색을 비슷한 예제 찾을 수 있다.)

추가 코드

sqlSessionFactoryBean.setConfigLocation(applicationContext.getResource("classpath:/mybatis-config.xml"));

DatabaseConfiguration.java

@Configuration
@PropertySource("classpath:/application.properties")
public class DatabaseConfiguration {
	
	@Bean
	public SqlSessionFactory sqlSessionFactory(DataSource dataSource) throws Exception {
		SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
		sqlSessionFactoryBean.setDataSource(dataSource);
		sqlSessionFactoryBean.setMapperLocations(applicationContext.getResources("classpath:/mapper/**/*.xml"));
		sqlSessionFactoryBean.setConfigLocation(applicationContext.getResource("classpath:/mybatis-config.xml"));
		return sqlSessionFactoryBean.getObject();
	}
}

[참고]

• Spring HikraiCP MySQL 옵션 설정 관련
• https://github.com/brettwooldridge/HikariCP#configuration-knobs-baby
• https://github.com/brettwooldridge/HikariCP/wiki/MySQL-Configuration
• http://www.mybatis.org/mybatis-3/ko/configuration.html
• http://www.mybatis.org/mybatis-3/ko/sqlmap-xml.html
• https://javacan.tistory.com/entry/spring-boot-2-hikaricp-property