gin中的文件上传

1. 单文件上传

package main
 
import (
    "fmt"
    "github.com/gin-gonic/gin"
    "log"
)
 
func main() {
    router := gin.Default()
    //为 multipart forms 设置较低的内存限制 (默认是 32 MiB)
    router.MaxMultipartMemory = 8 << 20
    router.POST("/upload", func(context *gin.Context) {
        // 单文件上传
        file, _ := context.FormFile("file")
        log.Println(file.Filename)
        // 上传文件到指定目录
        dst := fmt.Sprintf("./%s", file.Filename)
        context.SaveUploadedFile(file, dst)
        context.String(200, fmt.Sprintf("%s, uploaded!, Size: %d", file.Filename, file.Size))
    })
    router.Run()
}

2. 多文件上传

package main
 
import (
    "fmt"
    "github.com/gin-gonic/gin"
    "log"
    "net/http"
)
 
func main() {
    router := gin.Default()
    //为 multipart forms 设置较低的内存限制 (默认是 32 MiB)
    router.MaxMultipartMemory = 8 << 20  // 8M
    router.POST("/upload", func(context *gin.Context) {
        // 多文件上传
        form, _ := context.MultipartForm()
        files := form.File["upload"]
        for _, file := range files {
            log.Println(file.Filename)
            // 保存文件
            dst := fmt.Sprintf("./%s", file.Filename)
            context.SaveUploadedFile(file, dst)
        }
        context.String(http.StatusOK, fmt.Sprintf("%d files uploaded!", len(files)))
    })
    router.Run()
}