单文件上传示例：
main.go
router := router.InitRouter()
router.Run()
router/router.go
var router = gin.Default()
func init() {
//加载自定义函数
if v, ok := binding.Validator.Engine().(*validator.Validate); ok {
v.RegisterValidation("capt", captcha.VerifyCaptcha)
}
//加载静态文件
router.Static("upload", "upload/")
//加载view
router.LoadHTMLGlob("view/*")
}
func InitRouter() *gin.Engine {
router.GET("/index", user.Index)
router.POST("/upload", upload.Upload)
return router
}
controller/user/index.go
func Index(c *gin.Context) {
c.HTML(http.StatusOK, "upload.html", nil)
}
common/upload/upload.go代码如下：
// 定义上传路径
const UPLOAD_DIR = "upload"
func Upload(c *gin.Context) {
file, err := c.FormFile("upfile")
if err != nil {
c.JSON(http.StatusForbidden, gin.H{
"code": 400,
"error": err.Error(),
})
return
}
arr := strings.Split(file.Filename, ".")
filepath, ok := checkExtAndgetFilePath(arr[1])
if ok != true {
c.JSON(http.StatusForbidden, gin.H{
"code": 400,
"error": "invalid ext",
})
return
}
if err = c.SaveUploadedFile(file, filepath); err != nil {
c.JSON(http.StatusForbidden, gin.H{
"code": 400,
"error": "upload failed",
})
return
}
c.JSON(http.StatusOK, gin.H{
"code": 200,
"error": "upload success",
"img_url": filepath,
})
return
}
// 检查扩展名，并返回文件路径
func checkExtAndgetFilePath(fileExt string) (string, bool) {
allowExt := map[string]bool{
"jpg": true,
"png": true,
"jpeg": true,
}
if _, ok := allowExt[fileExt]; !ok {
return "", false
}
//创建文件夹
if _, ok := os.Stat(UPLOAD_DIR); ok != nil {
os.Mkdir(UPLOAD_DIR, os.ModePerm)
}
filePath := UPLOAD_DIR + "/" + strconv.FormatInt(time.Now().Unix(), 10) + "." + fileExt
return filePath, true
}
view/upload.html 模板文件
<body> <h3>单文件上传</h3> <form action="/upload" method="post" enctype="multipart/form-data"> <p><input type="file" name="upfile" id="upfile" /> <input type="submit" value="上传" /></p> </form> </body>
上传成功后返回：
多文件上传示例：
router/router.go
var router = gin.Default()
func init() {
//加载自定义函数
if v, ok := binding.Validator.Engine().(*validator.Validate); ok {
v.RegisterValidation("capt", captcha.VerifyCaptcha)
}
//加载静态文件
router.Static("upload", "upload/")
//加载view
router.LoadHTMLGlob("view/*")
}
func InitRouter() *gin.Engine {
router.GET("/index", user.Index)
router.POST("/upload", upload.UploadMul)
return router
}
common/upload.go
// 定义上传路径
const UPLOAD_DIR = "upload"
func UploadMul(c *gin.Context) {
form, err := c.MultipartForm()
if err != nil {
c.JSON(http.StatusForbidden, gin.H{
"code": 400,
"error": err.Error(),
})
return
}
var urls []string
files := form.File["upfile"]
for _, file := range files {
arr := strings.Split(file.Filename, ".")
filepath, ok := checkExtAndgetFilePath(arr[1])
if ok != true {
c.JSON(http.StatusForbidden, gin.H{
"code": 400,
"error": "invalid ext",
})
return
}
if err = c.SaveUploadedFile(file, filepath); err != nil {
c.JSON(http.StatusForbidden, gin.H{
"code": 400,
"error": "upload failed",
})
return
}
urls = append(urls, filepath)
}
c.JSON(http.StatusOK, gin.H{
"code": 200,
"error": "upload success",
"img_url": urls,
})
return
}
// 检查扩展名，并返回文件路径
func checkExtAndgetFilePath(fileExt string) (string, bool) {
allowExt := map[string]bool{
"jpg": true,
"png": true,
"jpeg": true,
}
if _, ok := allowExt[fileExt]; !ok {
return "", false
}
//创建文件夹
if _, ok := os.Stat(UPLOAD_DIR); ok != nil {
os.Mkdir(UPLOAD_DIR, os.ModePerm)
}
filePath := UPLOAD_DIR + "/" + strconv.FormatInt(time.Now().UnixNano(), 10) + "." + fileExt
return filePath, true
}
view/upload.html
<body>
<h3>单文件上传</h3>
<form action="/upload" method="post" enctype="multipart/form-data">
<p><input type="file" name="upfile" multiple id="upfile" /> <input type="submit" value="上传" /></p>
</form>
</body>
其他文件跟单文件上传一致。
上传的时候按住ctrl，可选择多张图片，上传后效果：
上传后，需要静态文件显示的话，在路由中需要增加一行代码：
router.Static("upload", "upload/") //加载静态文件
不然，通过浏览器无法打开图片
完结
标签：文件,ok,upload,return,gin,go,router,上传 From： https://www.cnblogs.com/ypeih/p/17311747.html