not registered via @EnableConfigurationProperties or marked as Spring component

利用@ConfigurationProperties(prefix = "")来绑定属性时报错：

not registered via @EnableConfigurationProperties or marked as Spring component

 

POM依赖

    <dependency>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-configuration-processor</artifactId>

        <optional>true</optional>

    </dependency>

 

注解需要

    @EnableAutoConfiguration

    @RestController

    @EnableConfigurationProperties({BookController.class})

    @ConfigurationProperties(prefix = "book")

    

    

    正是缺少@EnableConfigurationProperties({BookController.class}),才报该错的

    

    

代码

 

=========================BookController.class====================

 package controller;

 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 @EnableAutoConfiguration
 @RestController
 @RequestMapping
 @ConfigurationProperties(prefix = "book")
 public class BookController {
 //    @Value("${book.author}")
     private String author;
 //
 //    @Value("${book.name}")
     private String name;

     @RequestMapping("/bookInfo")
     public String showInfo(){
         return author + ":" + name;
     }

 }

==================================application.yml===============

 book:
   author: Tom
   name: Springboot

=========================DemoConfig.class====================

 package controller;

 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;

 @EnableConfigurationProperties({BookController.class})
 public class DemoConfig {
     public static void main(String[] args) {

         SpringApplication.run(BookController.class,args);
     }
 }