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1.首先在linux环境上安装go环境，这个网上搜搜就行

2.初始化一个go mod，网上搜搜怎么初始化

3.下面go代码的网址和端口绑定自己本机的就行

4.与另一篇CSDN一起食用，效果更好哟---> libcurl的get、post的使用-CSDN博客

package mainimport ("github.com/gin-gonic/gin""flag""fmt"
)func downFile(c *gin.Context, filePath string, filename string)  {c.Writer.Header().Add("Content-Disposition", fmt.Sprintf("attachment; filename=%s", filename))c.Writer.Header().Add("Content-Type", "application/octet-stream")fmt.Println(filePath)c.File(filePath)
}// go build -o go_gin main.go
func main() {var downPath *string = flag.String("down", "/tmp", "the down dir")flag.Parse()fmt.Printf("downPath = %s\n", *downPath)r := gin.Default()r.GET("/", func(c *gin.Context) {c.JSON(200, gin.H{"message": "Hello World!",})})r.GET("/ping", func(c *gin.Context) {c.JSON(200, gin.H{"message": "pong",})})r.POST("/submit", func(c *gin.Context) {var json struct {Name string `json:"name"`Email string `json:"email"`}if err := c.Bind(&json); err == nil {print("name = " + json.Name)print("email = " + json.Email)c.JSON(200, gin.H{"message": "JSON received","name":    json.Name,"email":   json.Email,})} else {c.JSON(400, gin.H{"error": err.Error()})}})// 文件下载r.POST("/down_file", func(c *gin.Context) {var json struct {FileName string `json:"file_name"`}if err := c.Bind(&json); err == nil {filePath := (*downPath) + "/" + json.FileNamedownFile(c, filePath, json.FileName)}})r.Run("10.74.37.146:9999") // listen and serve on 0.0.0.0:8080 (for windows "localhost:8080")
}