Modify: close file in main routine

routers/controllers/file.go

@@ -11,6 +11,7 @@ import (
 	"github.com/HFO4/cloudreve/pkg/util"
 	"github.com/HFO4/cloudreve/service/explorer"
 	"github.com/gin-gonic/gin"
+	"io"
 	"net/http"
 	"net/url"
 	"strconv"
@@ -99,6 +100,11 @@ func Thumb(c *gin.Context) {
 	}
 	http.ServeContent(c.Writer, c.Request, "thumb.png", fs.FileTarget[0].UpdatedAt, resp.Content)
 
+	// 检查是否需要关闭文件
+	if fc, ok := resp.Content.(io.Closer); ok {
+		defer fc.Close()
+	}
+
 }
 
 // Download 文件下载