feat: 添加下载文件到浏览器功能

service/file_service.go

@@ -3,6 +3,7 @@ package service
 import (
 	"context"
 	"fmt"
+	"net/url"
 	"oss/consts"
 	"oss/dao"
 	"oss/minio"
@@ -10,6 +11,7 @@ import (
 	"oss/model/entity"
 	"time"
 
+	"github.com/gogf/gf/v2/net/ghttp"
 	"github.com/gogf/gf/v2/os/glog"
 
 	"gitea.com/red-future/common/utils"
@@ -27,6 +29,23 @@ func (f *file) DownloadToFile(ctx context.Context, req *dto.DownloadToFileReq) (
 	return minio.DownloadToFile(ctx, req.FileURL, req.LocalPath)
 }
 
+// DownloadToBrowser 下载文件到浏览器
+func (f *file) DownloadToBrowser(ctx context.Context, req *dto.DownloadToBrowserReq) (err error) {
+	fileBytes, fileName, contentType, err := minio.DownloadToBrowser(ctx, req.FileURL)
+	if err != nil {
+		return err
+	}
+
+	r := ghttp.RequestFromCtx(ctx)
+	// 设置响应头
+	r.Response.Header().Set("Content-Type", contentType)
+	r.Response.Header().Set("Content-Disposition", fmt.Sprintf(`attachment; filename="%s"; filename*=UTF-8''%s`, fileName, url.PathEscape(fileName)))
+	r.Response.Header().Set("Content-Length", fmt.Sprintf("%d", len(fileBytes)))
+	// 写出二进制流
+	r.Response.Write(fileBytes)
+	return
+}
+
 func (f *file) UploadFile(ctx context.Context, req *dto.UploadFileReq) (res *dto.UploadFileRes, err error) {
 	fileSize := gconv.Int(req.File.Size)
 	totalFileSize := 0