使用beego框架进行文件上传

**模板代码如下** ```html <form id="fform" method="POST" enctype="multipart/form-data" action="/upload"> <input id="myfile" name="myfile" type="file" /> <input type="submit" value="保存" /> </form> ``` **上传代码实现如下** ```go package controllers import ( "path" "crypto/md5" "time" "fmt" "github.com/astaxie/beego" "math/rand" "os" ) type UploadController struct{ beego.Controller } func (this *UploadController) UpForm(){ this.TplName = "upload.tpl" } func (this *UploadController) UpFile(){ f, h, _ := this.GetFile("myfile")//获取上传的文件 ext := path.Ext(h.Filename) //验证后缀名是否符合要求 var AllowExtMap map[string]bool = map[string]bool{ ".jpg":true, ".jpeg":true, ".png":true, } if _,ok:=AllowExtMap[ext];!ok{ this.Ctx.WriteString( "后缀名不符合上传要求" ) return } //创建目录 uploadDir := "static/upload/" + time.Now().Format("2006/01/02/") err := os.MkdirAll( uploadDir , 777) if err != nil { this.Ctx.WriteString( fmt.Sprintf("%v",err) ) return } //构造文件名称 rand.Seed(time.Now().UnixNano()) randNum := fmt.Sprintf("%d", rand.Intn(9999)+1000 ) hashName := md5.Sum( []byte( time.Now().Format("2006_01_02_15_04_05_") + randNum ) ) fileName := fmt.Sprintf("%x",hashName) + ext //this.Ctx.WriteString( fileName ) fpath := uploadDir + fileName defer f.Close()//关闭上传的文件，不然的话会出现临时文件不能清除的情况 err = this.SaveToFile("myfile", fpath) if err != nil { this.Ctx.WriteString( fmt.Sprintf("%v",err) ) } this.Ctx.WriteString( "上传成功~！！！！！！！" ) } ```