项目结构

pom.xml

        	
         
          4.0.0
         	
         
          test.demo
         	
         
          springboot
         	
         
          0.0.1-SNAPSHOT
         	
         
          jar
         	
         
          springboot
         	
         		
          
           org.springframework.boot
          		
          
           spring-boot-starter-parent
          		
          
           1.3.0.RELEASE
          		
           	
         	
         		
          
           UTF-8
          	
         	
         		
          			
           
            org.springframework.boot
           			
           
            spring-boot-starter-web
           		
          	
         
        

　　

@Configurationproperties注解和@Value注解

@ConfigurationProperties加在有@Configuration的类或者由@Bean注解的方法上，

另外一个类似的注解@EnableConfigurationProperties

用于允许@ConfigurationProperties

使用示例:

    

package hello;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplicationpublic class App{    public static void main(String[] args)    {        SpringApplication.run(App.class, args);    }}

 

package hello.bean;//@Configuration//@ConfigurationProperties("user.properties")public class TestBean{	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 hello.config;import hello.bean.TestBean;import org.springframework.boot.context.properties.ConfigurationProperties;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;@Configurationpublic class BeanConfig{	@ConfigurationProperties("user.properties")	@Bean	public TestBean getBean()	{		return new TestBean();	}}

　　

package hello.controller;import hello.bean.TestBean;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Value;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.RestController;@RestControllerpublic class Controller{	@Autowired	TestBean bean;	@Value("${user.properties.name}")	String name;		@RequestMapping(value = "/test", method = RequestMethod.GET)	public String get()	{		System.out.println(name);		return bean.getName();	}	@RequestMapping(value = "/post", method = RequestMethod.POST)	public String post()	{		return "post";	}}

　　

 

application.yml

user:  properties:    age: 18    name: zzzz

单个属性使用@Value