Spring Boot 屬性注入的兩種方式

屬性注入的兩種方式@Value & @ConfigurationProperties

application.yml
spring:
  profiles:
    active: dev

application-dev.yml
book:
  name: test
  price: 15.00
  writer: gary

public class Book
{
    @Value("${book.name}")
    private String name;
    @Value("${book.price}")
    private double price;
    @Value("${book.writer}")
    private String writer;
}

@ConfigurationProperties(prefix = "book")
public class Book
{
    private String name;
    private double price;
    private String writer;
    
    public String getName()
    {
        return name;
    }

    public void setName(String name)
    {
        this.name = name;
    }

    public double getPrice()
    {
        return price;
    }

    public void setPrice(double price)
    {
        this.price = price;
    }

    public String getWriter()
    {
        return writer;
    }

    public void setWriter(String writer)
    {
        this.writer = writer;
    }
}