Golang使用gin框架创建Restful API

古城微笑少年丶 2023-09-29 18:08 9阅读 0赞

#### 文章目录 ####

*  一、Golang使用gin框架创建Restful API
 *   *   *  前言
         *  如何使用
     *  1.1 展示
     *  1.2 代码如下

## 一、Golang使用gin框架创建Restful API ##

#### 前言 ####

这里使用gin框架创建一个Restful API

#### 如何使用 ####

*  通过GET /albums来获取所有相册；
 *  通过POST /albums来添加增加相册；
 *  通过GET /albums/\[id\] 来获取指定id的相册。

为了展示，这里就没有连接数据库了，只在内存中创建了相册切片（包含三张相片）

### 1.1 展示 ###

**1、程序启动**：`go run man.go`

![在这里插入图片描述][9ea6f31af77a4dbf80a3d66ed85fac78.png]

**2、获取全部相册**：`curl localhost:8081/albums`

![在这里插入图片描述][6213b3fd50064858a05cdc4b26c801a5.png]

**3、添加相册**：`curl -i --data '{"id": "4","title": "The Modern Sound of Betty Carter","artist": "Betty Carter","price": 49.99}' http://localhost:8081/albums`

![在这里插入图片描述][ac211ef5c7e2487fac30432f99a213f5.png]

**4、获取指定id的相册**：`curl localhost:8081/albums/2`

![在这里插入图片描述][40a4100672494ecf860755dd7842997e.png]

### 1.2 代码如下 ###

main.go

package main
    
    import (
    	"net/http"
    
    	"github.com/gin-gonic/gin"
    )
    
    type album struct {
        
    	ID     string  `json:"id"`
    	Title  string  `json:"title"`
    	Artist string  `json:"artist"`
    	Price  float64 `json:"price"`
    }
    
    // albums slice to seed record album data.
    var albums = []album{
        
    	{
        ID: "1", Title: "Blue Train", Artist: "John Coltrane", Price: 56.99},
    	{
        ID: "2", Title: "Jeru", Artist: "Gerry Mulligan", Price: 17.99},
    	{
        ID: "3", Title: "Sarah Vaughan and Clifford Brown", Artist: "Sarah Vaughan", Price: 39.99},
    }
    
    // getAlbums responds with the list of all albums as json
    func getAlbums(c *gin.Context) {
        
    	c.IndentedJSON(http.StatusOK, albums)
    }
    
    // postAlbums add an album from json received in the request body.
    func postAlbums(c *gin.Context) {
        
    	var newAlbum album
    	if err := c.BindJSON(&newAlbum); err != nil {
        
    		return
    	}
    	albums = append(albums, newAlbum)
    	c.IndentedJSON(http.StatusCreated, newAlbum)
    }
    
    // getAlbumByID locate an album whose ID value match id
    func getAlbumByID(c *gin.Context) {
        
    	id := c.Param("id")
    	for _, a := range albums {
        
    		if a.ID == id {
        
    			c.IndentedJSON(http.StatusOK, a)
    			return
    		}
    	}
    	c.IndentedJSON(http.StatusNotFound, gin.H{
        "message": "album not found"})
    }
    
    func main() {
        
    	router := gin.Default()
    	router.GET("/albums", getAlbums)
    	router.POST("/albums", postAlbums)
    	router.GET("/albums/:id", getAlbumByID)
    	router.Run("localhost:8081")
    }

[9ea6f31af77a4dbf80a3d66ed85fac78.png]: https://img-blog.csdnimg.cn/9ea6f31af77a4dbf80a3d66ed85fac78.png#
[6213b3fd50064858a05cdc4b26c801a5.png]: https://img-blog.csdnimg.cn/6213b3fd50064858a05cdc4b26c801a5.png#
[ac211ef5c7e2487fac30432f99a213f5.png]: https://img-blog.csdnimg.cn/ac211ef5c7e2487fac30432f99a213f5.png
[40a4100672494ecf860755dd7842997e.png]: https://img-blog.csdnimg.cn/40a4100672494ecf860755dd7842997e.png#