CN111078650A - File storage method - Google Patents

Abstract

The invention discloses a file storage method, which comprises the following steps: s1, obtaining an operation user name K of the current uploaded file, and defining a value function b (K) of the operation user name K: (K) ═ K mod M; taking the operation result of the value function b (K) as the name of a first-level directory; s2, acquiring the current year and month Y, and calculating a value function b (Y): (Y) Y mod M, the operation result is used as the name of the secondary directory; s3, acquiring a file step length variable value n set by the system; s4, acquiring the file name Z of the uploaded file, and calculating a value function P (Z) of the file name Z; s5, mixing the P (Z) value obtained in S4 with 2ⁿ-1 performing a bitwise and operation to obtain a name of a tertiary directory; and S6, storing the file in the corresponding directory. The invention respectively stores the user name, the date and the file name in the three-level directory, can solve the problem that the files in the same folder are too many when the files are uploaded and stored in the B/S architecture, can search the files in various ways and improves the reading efficiency and the reading performance of the files.

Description

File storage method

Technical Field

The invention belongs to the technical field of file storage, and particularly relates to a file storage method.

Background

In the model of the B/S architecture, when an end user saves a file, a folder is created on a server (usually a file server) by the user' S operation, and then the file is saved under the folder.

With the increase of the use time of the system or the frequent operation of files by a user, the files in a certain folder may be excessive, so that the searching is inconvenient and the reading performance of the files is affected.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a file storage method which can respectively store a user name, a date and a file name in a three-level directory, can search files in various ways and can improve the reading efficiency and performance of the files.

The purpose of the invention is realized by the following technical scheme: a file storage method comprising the steps of:

s1, obtaining an operation user name K of the current uploaded file, and defining a value function b (K) of the operation user name K:

b(K)＝K mod M

wherein mod is a remainder function, and M is an arbitrary prime number;

taking the operation result of the value function b (K) as the name of a first-level directory;

s2, acquiring the current date Y, and calculating a value function b (Y) of the current date Y:

b(Y)＝Y mod M

using the operation result as the name of the secondary directory;

s3, acquiring a file step length variable value n set by the system;

s4, acquiring the file name Z of the uploaded file, and calculating a value function P (Z):

wherein W is the computer word size,

the f function is an integer function;

s5, mixing the P (Z) value obtained in S4 with 2ⁿ-1 bitwise and operation to obtain the name of the tertiary directory;

and S6, respectively storing the user name, the date and the file name in corresponding directories.

The invention has the beneficial effects that: the invention respectively stores the user name, the date and the file name in the three-level directory, can solve the problem that the files in the same folder are too many when the files are uploaded and stored in the B/S architecture, can search the files in various ways and improves the reading efficiency and the reading performance of the files.

Detailed Description

The technical solution of the present invention is further explained below.

The invention discloses a file storage method, which comprises the following steps:

s1, obtaining an operation user name K of the current uploaded file, and defining a value function b (K) of the operation user name K:

b(K)＝K mod M

wherein mod is a remainder function, and M is an arbitrary prime number;

taking the operation result of the value function b (K) as the name of a first-level directory;

s2, obtaining the current date Y (generally adopting a month-of-year format yyyy-MM, for example 2109-12), and calculating a value function b (Y):

b(Y)＝Y mod M

using the operation result as the name of the secondary directory;

s3, acquiring a file step length variable value n set by the system;

s4, obtaining the file name Z of the uploaded file, including the suffix name thereof, such as (example. zip); calculating a value function P (Z):

wherein W is the computer word size,

the f function is an integer function;

s5, carrying out bitwise AND operation on the P (Z) value obtained in the S4 and the 2n-1 bitwise value (converting the obtained value into a 2-system number, and carrying out bitwise AND operation on the number) to obtain the name of the tertiary directory;

s6, through the steps, the files are finally and evenly distributed into the three-level directories, and the maximum number of the three-level directories is (2)ⁿ-1), directly storing the uploaded original files in a third-level directory, and then respectively storing user names, dates and file names in corresponding purposesAnd (5) recording.

It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.

Claims (1)

1. A file storage method, comprising the steps of:

s1, obtaining an operation user name K of the current uploaded file, and defining a value function b (K) of the operation user name K:

b(K)＝K mod M

wherein mod is a remainder function, and M is an arbitrary prime number;

taking the operation result of the value function b (K) as the name of a first-level directory;

s2, acquiring the current date Y, and calculating a value function b (Y) of the current date Y:

b(Y)＝Y mod M

using the operation result as the name of the secondary directory;

s3, acquiring a file step length variable value n set by the system;

s4, acquiring the file name Z of the uploaded file, and calculating a value function P (Z):

wherein W is the computer word size,

the f function is an integer function;

s5, mixing the P (Z) value obtained in S4 with 2ⁿ-1 bitwise and operation to obtain the name of the tertiary directory;

and S6, respectively storing the user name, the date and the file name in corresponding directories.