图片裁切

Author: summerblue

go.mod

@@ -5,6 +5,7 @@ go 1.17
 require (
 	github.com/KenmyZhang/aliyun-communicate v0.0.0-20180308134849-7997edc57454
 	github.com/bxcodec/faker/v3 v3.7.0
+	github.com/disintegration/imaging v1.6.2
 	github.com/gertd/go-pluralize v0.1.7
 	github.com/gin-gonic/gin v1.7.7
 	github.com/go-redis/redis/v8 v8.11.4
@@ -61,7 +62,7 @@ require (
 	github.com/ugorji/go/codec v1.2.6 // indirect
 	go.uber.org/atomic v1.7.0 // indirect
 	go.uber.org/multierr v1.6.0 // indirect
-	golang.org/x/image v0.0.0-20190802002840-cff245a6509b // indirect
+	golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8 // indirect
 	golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e // indirect
 	golang.org/x/text v0.3.7 // indirect
 	google.golang.org/protobuf v1.27.1 // indirect

go.sum

@@ -107,6 +107,8 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
+github.com/disintegration/imaging v1.6.2 h1:w1LecBlG2Lnp8B3jk5zSuNqd7b4DXhcjwek1ei82L+c=
+github.com/disintegration/imaging v1.6.2/go.mod h1:44/5580QXChDfwIclfc/PCwrr44amcmDAg8hxG0Ewe4=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
@@ -501,8 +503,9 @@ golang.org/x/exp v0.0.0-20200207192155-f17229e696bd/go.mod h1:J/WKrq2StrnmMY6+EH
 golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6/go.mod h1:3jZMyOhIsHpP37uCMkUooju7aAi5cS1Q23tOzKc+0MU=
 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
 golang.org/x/image v0.0.0-20190501045829-6d32002ffd75/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
-golang.org/x/image v0.0.0-20190802002840-cff245a6509b h1:+qEpEAPhDZ1o0x3tHzZTQDArnOixOzGD9HUJfcg0mb4=
 golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
+golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8 h1:hVwzHzIUGRjiF7EcUjqNxk3NCfkPxbDKRdnNE1Rpg0U=
+golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
 golang.org/x/lint v0.0.0-20190301231843-5614ed5bae6f/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=

pkg/file/file.go

@@ -12,6 +12,7 @@ import (
 	"path/filepath"
 	"strings"
 
+	"github.com/disintegration/imaging"
 	"github.com/gin-gonic/gin"
 )
 
@@ -31,9 +32,11 @@ func Exists(fileToCheck string) bool {
 	}
 	return true
 }
+
 func FileNameWithoutExtension(fileName string) string {
 	return strings.TrimSuffix(fileName, filepath.Ext(fileName))
 }
+
 func SaveUploadAvatar(c *gin.Context, file *multipart.FileHeader) (string, error) {
 
 	var avatar string
@@ -50,7 +53,26 @@ func SaveUploadAvatar(c *gin.Context, file *multipart.FileHeader) (string, error
 		return avatar, err
 	}
 
-	return avatarPath, nil
+	// 裁切图片
+	img, err := imaging.Open(avatarPath, imaging.AutoOrientation(true))
+	if err != nil {
+		return avatar, err
+	}
+	resizeAvatar := imaging.Thumbnail(img, 256, 256, imaging.Lanczos)
+	resizeAvatarName := randomNameFromUploadFile(file)
+	resizeAvatarPath := publicPath + dirName + resizeAvatarName
+	err = imaging.Save(resizeAvatar, resizeAvatarPath)
+	if err != nil {
+		return avatar, err
+	}
+
+	// 删除老文件
+	err = os.Remove(avatarPath)
+	if err != nil {
+		return avatar, err
+	}
+
+	return dirName + resizeAvatarName, nil
 }
 
 func randomNameFromUploadFile(file *multipart.FileHeader) string {