SpringBoot自定义bean绑定实现

import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
@Data  //lombok省去get/set/toString
@Component //交给spring容器管理
@ConfigurationProperties(prefix = "servers") //配置文件的位置，对应的属性注入
public class ServerConfig {
    private String ipAddress;
    private int port;
    private String detail;
}

import com.pojo.ServerConfig;
        import org.springframework.boot.SpringApplication;
        import org.springframework.boot.autoconfigure.SpringBootApplication;
        import org.springframework.context.ConfigurableApplicationContext;
@SpringBootApplication
public class Springboot11ConfigurationApplication {
    public static void main(String[] args) {
        ConfigurableApplicationContext run = SpringApplication.run(Springboot11ConfigurationApplication.class, args);
        ServerConfig bean = run.getBean(ServerConfig.class);
        System.out.println(bean);
    }
}

      <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.2.12</version>
        </dependency>

@SpringBootApplication
public class Springboot11ConfigurationApplication {
    @Bean//注入
    public DruidDataSource druidDataSource(){
        DruidDataSource ds=new DruidDataSource();
        return ds;
    }
    public static void main(String[] args) {
        ConfigurableApplicationContext run = SpringApplication.run(Springboot11ConfigurationApplication.class, args);
       ServerConfig bean = run.getBean(ServerConfig.class);
       System.out.println(bean);
        DruidDataSource dds = run.getBean(DruidDataSource.class);
        System.out.println(dds);
    }
}

package com;
import com.alibaba.druid.pool.DruidDataSource;
import com.pojo.ServerConfig;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.Bean;
@SpringBootApplication
public class Springboot11ConfigurationApplication {
    @Bean
    @ConfigurationProperties(prefix = "datasource")
    public DruidDataSource druidDataSource(){
        DruidDataSource ds=new DruidDataSource();
        return ds;
    }
    public static void main(String[] args) {
        ConfigurableApplicationContext run = SpringApplication.run(Springboot11ConfigurationApplication.class, args);
//        ServerConfig bean = run.getBean(ServerConfig.class);
//        System.out.println(bean);
        DruidDataSource dds = run.getBean(DruidDataSource.class);
        System.out.println(dds.getDriverClassName());
        System.out.println(dds.getUsername());
        System.out.println(dds.getPassword());
    }
}

     <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
        </dependency>