[Java知识库]springBoot读取yml文件，配置到实体类的例子

实体类

package com.itheima.entity;

import jdk.jfr.DataAmount;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

import java.util.Date;

@Data
@AllArgsConstructor
@NoArgsConstructor
@Component
@ConfigurationProperties(prefix = "book")
public class Book {
    private int id;
    private String bookName;
    private String author;
    private String description;
    private String press;
    private Date createDate;
    private int inventory;
    private int typeId;
    private String bookCode;
    private String picturePath;
    private double price;
    private int salesNumber;
    private int saleState;
}

yml文件

book:
  id: 2
  bookName:  springBoot企业级开发教程
  author: heima
  description: 这是一段描述
  press: 人民邮电出版社
  createDate: 2021/07/12

控制层：

package com.itheima.controller;

import com.itheima.entity.Book;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.sql.DataSource;

@RestController
public class HelloController {

    @Autowired
    private DataSource dataSource;
    @Autowired
    private Book book;

    @GetMapping("hello")
    public Book hello(){
        System.out.println("dataSource = "+dataSource);
        return book;
    }
}

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