可以设置管理界面和用户界面的浏览器图标和Logo

internal/web/actions/default/ui/image.go

@@ -0,0 +1,68 @@
+package ui
+
+import (
+	"github.com/TeaOSLab/EdgeAdmin/internal/web/actions/actionutils"
+	"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
+	"mime"
+	"path/filepath"
+	"strconv"
+)
+
+// 公开的图片，不需要检查用户权限
+type ImageAction struct {
+	actionutils.ParentAction
+}
+
+func (this *ImageAction) Init() {
+	this.Nav("", "", "")
+}
+
+func (this *ImageAction) RunGet(params struct {
+	FileId int64
+}) {
+	fileResp, err := this.RPC().FileRPC().FindEnabledFile(this.AdminContext(), &pb.FindEnabledFileRequest{FileId: params.FileId})
+	if err != nil {
+		this.ErrorPage(err)
+		return
+	}
+	file := fileResp.File
+	if file == nil {
+		this.NotFound("file", params.FileId)
+		return
+	}
+
+	if !file.IsPublic {
+		this.NotFound("file", params.FileId)
+		return
+	}
+
+	chunkIdsResp, err := this.RPC().FileChunkRPC().FindAllFileChunkIds(this.AdminContext(), &pb.FindAllFileChunkIdsRequest{FileId: file.Id})
+	if err != nil {
+		this.ErrorPage(err)
+		return
+	}
+
+	mimeType := ""
+	if len(file.Filename) > 0 {
+		ext := filepath.Ext(file.Filename)
+		mimeType = mime.TypeByExtension(ext)
+	}
+	if len(mimeType) == 0 {
+		mimeType = "image/png"
+	}
+
+	this.AddHeader("Last-Modified", "Fri, 06 Sep 2019 08:29:50 GMT")
+	this.AddHeader("Content-Type", mimeType)
+	this.AddHeader("Content-Length", strconv.FormatInt(file.Size, 10))
+	for _, chunkId := range chunkIdsResp.FileChunkIds {
+		chunkResp, err := this.RPC().FileChunkRPC().DownloadFileChunk(this.AdminContext(), &pb.DownloadFileChunkRequest{FileChunkId: chunkId})
+		if err != nil {
+			this.ErrorPage(err)
+			return
+		}
+		if chunkResp.FileChunk == nil {
+			continue
+		}
+		this.Write(chunkResp.FileChunk.Data)
+	}
+}