springboot 学习笔记（二）--- properties 配置

System.setProperty("myname", "Java_System_name");

myname=classpath_name

db=db
jdbc.username=root
jdbc.password=root

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

@Component
@ConfigurationProperties
public class MysqlConfig {

    private String db;

    private Jdbc jdbc;

    public String getDb() {
        return db;
    }

    public void setDb(String db) {
        this.db = db;
    }

    public Jdbc getJdbc() {
        return jdbc;
    }

    public void setJdbc(Jdbc jdbc) {
        this.jdbc = jdbc;
    }

}

public class Jdbc {
    private String username;

    private String password;

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

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

my:
  server:
    - hehe
    - haha

@Component("serverConfig")
@ConfigurationProperties(prefix = "my")
public class ServerConfig {

    private List<String> server = new ArrayList<String>();

    public List<String> getServer() {
        return server;
    }

    public void setServer(List<String> server) {
        this.server = server;
    }

}

@RestController
@EnableAutoConfiguration
@ComponentScan
public class Application {

    @Autowired
    private ServerConfig serverConfig;

    @RequestMapping("/")
    public String index() {

        getServerConfig();

        return "hello, spring boot" ;
    }

    public void getServerConfig() {
        Gson gson = new Gson();

               System.out.println(gson.toJson(serverConfig.getServer()));
    }

    public static void main(String[] args) {


        SpringApplication.run(Application.class, args);

    }
}