示例如下：

1.   新建 Maven 项目 properties

 

2.   pom.xml

         
      
       4.0.0
          
      
       com.java
          
      
       properties
          
      
       1.0.0
          
              
       
        org.springframework.boot
               
       
        spring-boot-starter-parent
               
       
        2.0.5.RELEASE
           
          
              
               
                   
        
         org.springframework.boot
                    
        
         spring-boot-starter-web
                
       
               
                   
        
         org.projectlombok
                    
        
         lombok
                    
        
         provided
                
               
               
                   
        
         org.springframework
                    
        
         springloaded
                    
        
         1.2.8.RELEASE
                    
        
         provided
                
               
                   
        
         org.springframework.boot
                    
        
         spring-boot-devtools
                    
        
         provided
                
           
          
              
       
        ${project.artifactId}
               
                   
                        
         
          org.apache.maven.plugins
                         
         
          maven-compiler-plugin
                         
                             
          1.8                    
          
           1.8
                              
          
           UTF-8
                          
                     
                    
                        
         
          org.springframework.boot
                         
         
          spring-boot-maven-plugin
                         
                             
           
            
            
             repackage
             
            
                          
                     
                
           
      
     

 

 

3.   配置文件  user-defined.properties

aaa.url.login=aaa-login.htmlaaa.url.order=aaa-order.htmlbbb.goods.price=500bbb.goods.weight=1000

 

4.   PropertiesStarter.java

package com.java;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;/** * 主启动类 *  * @author Storm * */@SpringBootApplicationpublic class PropertiesStarter {    public static void main(String[] args) {        SpringApplication.run(PropertiesStarter.class, args);    }}

 

5.   URLProperties.java

package com.java.properties;import org.springframework.boot.context.properties.ConfigurationProperties;import lombok.Data;/** * 前缀为aaa.url的配置自动注入到对应属性中 *  * @author Storm * */@Data@ConfigurationProperties(prefix = "aaa.url")public class URLProperties {    private String login;    private String order;}

 

6.   GoodsProperties.java

package com.java.properties;import org.springframework.boot.context.properties.ConfigurationProperties;import lombok.Data;/** * 前缀为bbb.goods的配置自动注入到对应属性中 *  * @author Storm * */@Data@ConfigurationProperties(prefix = "bbb.goods")public class GoodsProperties {    private String price;    private String weight;}

 

7.   PropertiesConfig.java

package com.java.config;import org.springframework.boot.context.properties.EnableConfigurationProperties;import org.springframework.context.annotation.Configuration;import org.springframework.context.annotation.PropertySource;import com.java.properties.GoodsProperties;import com.java.properties.URLProperties;/** * 用户自定义配置文件配置类 *  * @author Storm * */@Configuration@PropertySource({ "classpath:user-defined.properties" })@EnableConfigurationProperties({ URLProperties.class, GoodsProperties.class })public class PropertiesConfig {}

 

8.   DemoController.java

package com.java.controller;import java.util.HashMap;import java.util.Map;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RestController;import com.java.properties.GoodsProperties;import com.java.properties.URLProperties;@RestControllerpublic class DemoController {    @Autowired    private URLProperties url;    @Autowired    private GoodsProperties goods;    @GetMapping("/getProperties")    public Map
     
       getProperties() {        System.out.println(url.getOrder());        Map
      
        map = new HashMap<>();        map.put("url", url);        map.put("goods", goods);        return map;    }}
      
     

 

9.   运行 PropertiesStarter.java ，启动测试

浏览器输入 

返回结果如下：

{"goods":{"price":"500","weight":"1000"},"url":{"login":"aaa-login.html","order":"aaa-order.html"}}

 

 

 

配置加载成功！

 

 

 

Spring boot 自动配置自定义配置文件

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