详解Spring-boot中读取config配置文件的两种方式

test.msg=Hello World SpringBoot 

package Solin.controller; 
 
import org.springframework.beans.factory.annotation.Value; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.springframework.web.bind.annotation.RestController; 
 
@RestController 
public class WebController { 
  @Value("${test.msg}") 
  private String msg; 
   
  @RequestMapping("/index1")  
  public String index1(){ 
    return "方式一:"+msg; 
  } 
} 

package Solin.controller; 
 
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.beans.factory.annotation.Value; 
import org.springframework.core.env.Environment; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.springframework.web.bind.annotation.RestController; 
 
@RestController 
public class WebController { 
  @Autowired 
  private Environment env; 
   
  @RequestMapping("/index2")  
  public String index2(){ 
    return "方式二:"+env.getProperty("test.msg"); 
  } 
} 

author.name=Solin 
author.age=22 

package Solin.controller; 
 
import org.springframework.boot.context.properties.ConfigurationProperties; 
import org.springframework.context.annotation.Configuration; 
import org.springframework.stereotype.Component; 
 
//加上注释@Component，可以直接在其他地方使用@Autowired来创建其实例对象 
@Component 
@ConfigurationProperties(prefix = "author",locations = "classpath:author.properties")   
public class MyWebConfig{ 
  private String name; 
  private int age; 
  public String getName() { 
    return name; 
  } 
  public void setName(String name) { 
    this.name = name; 
  } 
  public int getAge() { 
    return age; 
  } 
  public void setAge(int age) { 
    this.age = age; 
  } 
} 

package Solin.controller; 
 
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.stereotype.Controller; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.springframework.web.bind.annotation.ResponseBody; 
 
@Controller  
public class ConfigController { 
  @Autowired 
  private MyWebConfig conf; 
   
  @RequestMapping("/test")  
  public @ResponseBody String test() { 
    return "Name:"+conf.getName()+"---"+"Age:"+conf.getAge();  
  } 
}