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);
    }
}