database/db.go

@@ -217,36 +217,3 @@ func CheckUserPasswd(username string, password string) bool {
 		return false
 	}
 }
-
-func GetFileLinkID(md5in string) string {
-	db, err := sql.Open("sqlite3", "./data/database.db")
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer db.Close()
-
-	// SQL语句
-	SQL := `
-	SELECT * FROM "mytable" WHERE md5 = ?
-	`
-
-	row := db.QueryRow(SQL,md5in)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	// 扫描查询结果
-	var md5 string
-	var linkID string
-	var ext string
-	err = row.Scan(&linkID,&md5,&ext)
-	if err != nil {
-		if err == sql.ErrNoRows {
-			return ""
-		} else {
-			log.Fatal(err)
-		}
-		return ""
-	}
-	return linkID
-}

main.go

@@ -130,12 +130,6 @@ func upload(w http.ResponseWriter, r *http.Request) {
 		}
 		md5sum := fmt.Sprintf("%x", h.Sum(nil))
 
-		oldLinkID := database.GetFileLinkID(md5sum)
-		if oldLinkID != "" {
-			w.Write([]byte(oldLinkID))
-			return
-		}
-
 		// 获取文件扩展名
 		fname := handler.Filename
 		ext := path.Ext(fname)