Gin图书请求

package main
import (
    "net/http"
    "github.com/gin-gonic/gin"
)
/*
 * gin简单模拟图书请求
 *
 *
 */
/// @dev 书本数据
/// json端传输的id标识为全小写，进行绑定
type Book struct {
    ID     string `json:"id"`
    Title  string `json:"title"`
    Author string `json:"author"`
}
/// @dev 书本的切片，也就是可变数组
/// @dev 初始化了三本书籍
var books = []Book{
    {ID: "1", Title: "Harry Potter", Author: "J. K. Rowling"},
    {ID: "2", Title: "The Lord of the Rings", Author: "J. R. R. Tolkien"},
    {ID: "3", Title: "The Wizard of Oz", Author: "L. Frank Baum"},
}
func main() {
    //默认启动Gin框架
    r := gin.Default()
    r.GET("/books", func(ctx *gin.Context) {
        ctx.JSON(http.StatusOK, books)
    })
    r.POST("/books", func(ctx *gin.Context) {
        //声明book的副本，变量名为book
        var book Book
        if err := ctx.ShouldBindJSON(&book); err != nil {
            ctx.JSON(http.StatusBadRequest, gin.H{
                "error": err.Error(),
            })
            return
        }
        //添加进去
        books = append(books, book)
        ctx.JSON(http.StatusCreated, book)
    })
    r.Run(":8080")
}