SpringBoot 2.0 更优雅的配置注入

application.properties

jdbc.driverclassname=com.mysql.jdbc.driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/leyou
jdbc.username=root
jdbc.password=

　　

jdbcconfig .java

package cn.itcast.config;

import com.alibaba.druid.pool.druiddatasource;
import org.springframework.boot.context.properties.configurationproperties;
import org.springframework.context.annotation.bean;
import org.springframework.context.annotation.configuration;

import javax.sql.datasource;

//配置文件注解
@configuration
public class jdbcconfig {
    @bean
    @configurationproperties(prefix = "jdbc")
    public datasource datasource(){
        return new druiddatasource();
    }
}