'commit'

dsSupport/Business/Minio/MinioController.go

@@ -3,11 +3,15 @@ package Minio
 import (
 	"dsSupport/Utils/CommonUtil"
 	"dsSupport/Utils/ConfigUtil"
+	"dsSupport/Utils/FileUtil"
+	"dsSupport/Utils/ImageUtil"
 	"github.com/gin-gonic/gin"
 	"github.com/minio/minio-go/v6"
+	"io"
 	"log"
 	"net/http"
 	"net/url"
+	"os"
 	"strings"
 	"time"
 )
@@ -26,6 +30,8 @@ func Routers(r *gin.RouterGroup) {
 	rr.GET("/presignedUrl", presignedUrl)
 	//获取下载URL地址
 	rr.GET("/getUrl", getUrl)
+	//显示缩略图
+	rr.GET("/scale", scale)
 	return
 }
 
@@ -43,8 +49,86 @@ func init() {
 	}
 }
 
-// Minio 图片永久访问的问题处理
-// https://blog.csdn.net/kylinregister/article/details/88910556
+/**
+功能：在minio上支持图片的缩放
+作者：黄海
+时间: 2020-07-16
+用例: http://10.10.24.100:9000/dsSupport/minio/scale?key=IMG_20200512_114233.jpg&w=800&h=600
+*/
+func scale(c *gin.Context) {
+	//minio中的图片地址
+	key := c.Query("key")
+	//宽
+	w := c.Query("w")
+	//高
+	h := c.Query("h")
+
+	//Content_Type
+	_extMap := make(map[string]string, 0)
+	_extMap["png"] = "image/png"
+	_extMap["jpg"] = "image/jpeg"
+	_extMap["jpeg"] = "image/jpeg"
+	_extMap["bmp"] = "image/bmp"
+
+	//TODO
+	//w和h的整数范围检查
+	//在minio中是不是已经存在目标文件，如果存在，就不用再费劲了~
+
+	//(1)下载回来
+	url := "http://" + ConfigUtil.MinioEndpoint + "/" + ConfigUtil.MinioBacketName + "/" + key
+	res, err := http.Get(url)
+	if err != nil {
+		c.String(http.StatusOK, "文件在minio中没有找到！")
+		return
+	}
+	src := CommonUtil.GetCurrentPath() + "/TempFiles/" + key
+	if FileUtil.Exists(src) {
+		os.Remove(src)
+	}
+	f, err := os.Create(src)
+	if err != nil {
+		c.String(http.StatusOK, "在本地创建缓存文件失败！")
+		return
+	}
+	io.Copy(f, res.Body)
+	//(2)生成缩略图
+	//打开源文件
+	fIn, _ := os.Open(src)
+	defer fIn.Close()
+	//创建目标文件
+	dst := strings.Replace(src, ".", "_"+w+"_"+h+".", 1)
+	fOut, _ := os.Create(dst)
+	defer fOut.Close()
+	//缩放
+	err = ImageUtil.Scale(fIn, fOut, CommonUtil.ConvertStringToInt(w), CommonUtil.ConvertStringToInt(h), 100)
+	if err != nil {
+		c.String(http.StatusOK, "生成缩略图失败！")
+		return
+	}
+	//(3)上传回去
+	file, _ := os.Open(dst)
+	defer file.Close()
+	fileStat, _ := file.Stat()
+	dkey := strings.Replace(key, ".", "_"+w+"_"+h+".", 1)
+
+	//需要配置一下图片的header头
+	extArr := strings.Split(dkey, ".")
+	ext := extArr[1]
+	if _, ok := _extMap[ext]; !ok {
+		//不存在
+		c.String(http.StatusInternalServerError, "不支持的扩展名！")
+		return
+	}
+	_, err = s3Client.PutObject(ConfigUtil.MinioBacketName, dkey, file, fileStat.Size(),
+		minio.PutObjectOptions{ContentType: _extMap[ext]})
+	if err != nil {
+		c.String(http.StatusInternalServerError, "上传Minio失败！")
+		return
+	}
+	//(4)返回结果路径
+	c.String(http.StatusOK, "http://"+ConfigUtil.MinioEndpoint+"/"+ConfigUtil.MinioBacketName+"/"+dkey)
+	return
+}
 
 /**
 功能：获取下载URL地址
@@ -63,7 +147,6 @@ func getUrl(c *gin.Context) {
 	c.String(http.StatusOK, presignedURL.String())
 }
 
-
 /**
 功能：生成上传的签名
 作者：黄海

dsSupport/Config/Config.ini

@@ -7,7 +7,7 @@ backupPrefix    =   baseServiceDbBackup
 remainDays      =   15
 
 [minio]
-endpoint        =   10.10.14.242:9000
+endpoint        =   10.10.14.241:9000
 ak              =   5D2Q3FZ04LW4DIDW7R22
 sk              =   C98uUVskiHjPaVmjTBPFdE6rh+wOJKtQIn1wvqvv
-bucketName      =   dsmin
+bucketName      =   dsideal

dsSupport/Utils/CommonUtil/CommonUtil.go

@@ -9,6 +9,7 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"strconv"
 	"strings"
 )
 
@@ -126,3 +127,13 @@ func GetUUID() string {
 	u2 := strings.ToUpper(uuid.NewV4().String())
 	return u2
 }
+
+/**
+功能：将字符串转为整数
+作者：黄海
+时间：2020-06-03
+*/
+func ConvertStringToInt(s string) int {
+	int, _ := strconv.Atoi(s)
+	return int
+}