CN106354788A - File reading method and device - Google Patents
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- CN106354788A CN106354788A CN201610712655.0A CN201610712655A CN106354788A CN 106354788 A CN106354788 A CN 106354788A CN 201610712655 A CN201610712655 A CN 201610712655A CN 106354788 A CN106354788 A CN 106354788A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/13—File access structures, e.g. distributed indices
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Abstract
The invention discloses a file reading method and device for improving the efficiency of file reading. The method includes the steps of obtaining the name of the file to be processed from a preset queue; reading and processing the data in the file to be processed according to the name of the file to be processed; stopping reading the file to be processed when the data acquired meet the preset conditions, and writing the acquired data to a database; the file reading method and device can write in parallel multithreading while reading, instead of writing data to the database after the reading of all data. Therefore, the technical scheme can to a great extent improve the efficiency of data read-in, and save the data processing time in a computer.
Description
Technical field
The present invention relates to Internet technical field, more particularly, to a kind of file reading and device.
Background technology
Data base is the warehouse to organize, store and to manage data according to data structure, and data base is to the inquiry of data, place
Reason speed is considerably beyond the processing speed of ordinary file.With the rapid growth of mobile Internet business and number of users, tradition
Warehouse-in mechanism be difficult to meet the demand of stock management, therefore, the method using multiple threads data is arisen at the historic moment.
Content of the invention
The embodiment of the present invention provides a kind of file reading and device, for improving the efficiency of file reading.
A kind of file reading, is applied in parallel multithreading, comprises the following steps:
The file name of pending file is obtained from default queue；
Read according to the file name of described pending file and process the data in described pending file；
When the data of described reading meets pre-conditioned, stop reading described pending file, and by described reading
Data write into Databasce.
In one embodiment, the data volume of the described pre-conditioned data for described reading reaches predetermined threshold value；
Correspondingly, described by after the data write into Databasce of described reading, methods described also includes:
Continue to read not processed data in described pending file.
In one embodiment, described pre-conditioned all read for the data in described pending file；
Correspondingly, described by after the data write into Databasce of described reading, methods described also includes:
Continue to obtain the file name of next pending file from described default queue.
In one embodiment, the described file name according to described pending file reads and processes described pending literary composition
Before data in part, methods described also includes:
Obtain the default expression formula corresponding with current thread；
The parameter of described file name is matched with described default expression formula, and according to described matching result judges
Whether file to be stored is readable, and described parameter includes the form of described file name；
Correspondingly, the described file name according to described pending file reads and processes the number in described pending file
According to, comprising:
When judging that described file to be stored is readable, read and described in processing according to the file name of described pending file
Data in pending file.
In one embodiment, the described acquisition default expression formula corresponding with current thread, comprising:
Determine the quantity of described default expression formula；
When the quantity of described default expression formula is unique, described expression formula of uniquely presetting is defined as and current thread phase
Corresponding default expression formula；
When the quantity of described default expression formula is identical with described parallel multithreading quantity, according to default each thread with
The corresponding relation of default expression formula determines the default expression formula corresponding with current thread.
A kind of document reading apparatus, are applied in parallel multithreading, comprising:
First acquisition module, for obtaining the file name of pending file from default queue；
First read module, for reading according to the file name of described pending file and processing described pending file
In data；
Writing module, for when the data of described reading meets pre-conditioned, stopping reading described pending file, and
Data write into Databasce by described reading.
In one embodiment, the data volume of the described pre-conditioned data for described reading reaches predetermined threshold value；Described
Device also includes:
Second read module, after the data write into Databasce by described reading, continues to read described pending literary composition
Not processed data in part.
In one embodiment, described pre-conditioned all read for the data in described pending file；Described
Device also includes:
Second acquisition module, for continuing to obtain the file name of next pending file from described default queue.
In one embodiment, described device also includes:
3rd acquisition module, for reading according to the file name of described pending file and processing described pending file
In data before, obtain the default expression formula corresponding with current thread；
Judge module, for matching the parameter of described file name, and according to described with described default expression formula
Join result and judge whether described file to be stored is readable, described parameter includes the form of described file name；
Correspondingly, described first read module, for when judging that described file to be stored is readable, according to described pending
The file name of file reads and processes the data in described pending file.
In one embodiment, described 3rd acquisition module includes:
First determining unit, for determining the quantity of described default expression formula；
Second determining unit, for when the quantity of described default expression formula is unique, uniquely presetting expression formula by described
It is defined as the default expression formula corresponding with current thread；
3rd determining unit, for when the quantity of described default expression formula is identical with described parallel multithreading quantity,
The default expression formula corresponding with current thread is determined with the corresponding relation of default expression formula according to default each thread.
Some beneficial effects of the embodiment of the present invention may include that
Using technical scheme provided in an embodiment of the present invention, the literary composition of pending file actively can be obtained from default queue
Part title, and the data being read according to the file name of pending file and processing in pending file is so that wait to locate reading
Reason file when, can quick obtaining to pending file file name, thus improving the efficiency reading pending file, and
And, this technical scheme can stop reading pending file when the data reading meets pre-conditioned, and the data that will read
So that parallel multithreading can write in reading in write into Databasce, and not all of data is all read and complete
Afterwards again in write into Databasce, therefore improve to a great extent data write efficiency, save computer processing data when
Between.
Other features and advantages of the present invention will illustrate in the following description, and, partly become from description
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by the explanations write
In book, claims and accompanying drawing, specifically noted structure is realizing and to obtain.
Below by drawings and Examples, technical scheme is described in further detail.
Brief description
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for description, the reality with the present invention
Apply example and be used for explaining the present invention together, be not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the flow chart of a kind of method that file reads in the embodiment of the present invention；
Fig. 2 is the flow chart of the method that another kind of file reads in the embodiment of the present invention；
Fig. 3 is a kind of block diagram of the device that file reads in the embodiment of the present invention；
Fig. 4 is the block diagram of the device that another kind of file reads in the embodiment of the present invention；
Fig. 5 is the block diagram of the 3rd acquisition module in the device that in the embodiment of the present invention, a kind of file reads.
Specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are illustrated it will be appreciated that preferred reality described herein
Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Fig. 1 is the flow chart of a kind of method that file reads in the embodiment of the present invention.As shown in figure 1, the method is applied to
In parallel multithreading, comprise the following steps s11-s13:
Step s11, obtains the file name of pending file from default queue.
Wherein, default queue be used for storage file to be handled file name.In this embodiment, by being pre-created
Main thread find from file directory and need file to be processed, and the default team of file name write of file to be processed will be needed
In row, the quantity of parallel multithreading can be pre-configured, and for example, in configuration file, setting multithreading quantity is 9, then start journey
After sequence, main thread will create 9 sub- threads, and every strip thread active obtains the filename of pending file from default queue
Claim.
Step s12, reads according to the file name of pending file and processes the data in pending file.
Step s13, when the data reading meets pre-conditioned, stops reading pending file, and the data that will read
Write into Databasce.
In one embodiment, the data volume of the pre-conditioned data for reading reaches predetermined threshold value.For example, predetermined threshold value
For 5000, then when the data volume of the data reading from pending file when current thread reaches 5000, then stop reading being somebody's turn to do
In pending file, and this 5000 data write into Databasce that will read.Then following steps are executed: continue reading pending
Not processed data in file.When continuing to read, this waits to locate still to stop reading when the data reading reaches 5000
Reason file.
In one embodiment, pre-conditioned all read for the data in pending file.For example, current thread
Data volume in the pending file being read is less, then current thread can directly read all numbers in this pending file
According to, and in write into Databasce.Then following steps are executed: continue to obtain the file of next pending file from default queue
Title.When the file name of file no pending in default queue, current thread task terminates.
In one embodiment, above two is pre-conditioned may also be combined with use.For example, predetermined threshold value is 5000,
Data volume in pending file has 8000, and the data volume of the data reading from pending file when current thread reaches
Article 5000, when, then stop reading in this pending file, and this 5000 data write into Databasce that will read, then, continue
Read remaining 3000 data in pending file, because this 3000 data is less than predetermined threshold value, and this pending file
It is read and completes, therefore current thread stops reading the operation of data, and this 3000 data write into Databasce that will read
In, then obtain the file name of next pending file again from default queue, when literary composition no pending in default queue
During the file name of part, current thread task terminates.
In one embodiment, before execution step s12, said method is further comprising the steps of: obtains and current thread
Corresponding default expression formula；The parameter of file name is matched with default expression formula, and judges to wait to deposit according to matching result
Whether storage file is readable, and wherein, parameter includes the form of file name.Correspondingly, step s12 can perform as following steps: when
When judging that file to be stored is readable, read according to the file name of pending file and process the data in pending file.
Wherein, when obtaining the default expression formula corresponding with current thread, it is first determined preset expression formula in configuration file
Quantity, following two situations are divided into according to the quantity difference of expression formula default in configuration file: pre- in situation one, configuration file
If the quantity of expression formula is unique, illustrate that a plurality of thread shares a default expression formula, now this uniquely can be preset expression formula
It is defined as the default expression formula corresponding with current thread.In situation two, configuration file the quantity of default expression formula with described simultaneously
The multithreading quantity of row is identical, illustrate that each thread corresponds to respective default expression formula, now can according to default each thread with advance
If the corresponding relation of expression formula determines the default expression formula corresponding with current thread.
In one embodiment, when all of pending file be all processed complete and parallel each thread task all
After end, main thread can be searched from file directory again and need file to be processed, when finding the file of process in need,
Continue, by default for file name write queue, to create multithreading to process file simultaneously.
Fig. 2 is the flow chart of a kind of method that file reads in the embodiment of the present invention.As shown in Fig. 2 the method is applied to
In parallel multithreading, comprise the following steps s21-s26:
Step s21, obtains the file name of pending file from default queue.
Step s22, reads according to the file name of pending file and processes the data in pending file.
Step s23, judges whether the data volume of read data reaches predetermined threshold value；Data when the data being read
When amount reaches predetermined threshold value, then execution step s24；Otherwise, return to step s22 continues to read and process the number in pending file
According to；
Step s24, the data write into Databasce that will read.
Step s25, continues to read the data in pending file.It is then back to step s23, until currently pending file
In data all read.
Step s26, judges whether the data in pending file is all read.If the data in pending file
All read, then return to step s21, obtained the file name of next pending file from default queue；Otherwise, return
Return step s25.
The file reading that any of the above-described embodiment is provided at least has the advantages that
Using technical scheme provided in an embodiment of the present invention, the literary composition of pending file actively can be obtained from default queue
Part title, and the data being read according to the file name of pending file and processing in pending file is so that wait to locate reading
Reason file when, can quick obtaining to pending file file name, thus improving the efficiency reading pending file, and
And, this technical scheme can stop reading pending file when the data reading meets pre-conditioned, and the data that will read
So that parallel multithreading can write in reading in write into Databasce, and not all of data is all read and complete
Afterwards again in write into Databasce, therefore improve to a great extent data write efficiency, save computer processing data when
Between.
Fig. 3 is a kind of block diagram of the device that file reads in the embodiment of the present invention.As shown in figure 3, this device is applied to simultaneously
In the multithreading of row, comprising:
First acquisition module 31, for obtaining the file name of pending file from default queue；
First read module 32, for reading according to the file name of pending file and processing the number in pending file
According to；
Writing module 33, during for meeting pre-conditioned when the data reading, stopping reading pending file, and will read
Data write into Databasce.
In one embodiment, the data volume of the pre-conditioned data for reading reaches predetermined threshold value；Device also includes:
Second read module, for will read data write into Databasce after, continue read pending file in not by
The data processing.
In one embodiment, pre-conditioned all read for the data in pending file；Device also includes:
Second acquisition module, for continuing to obtain the file name of next pending file from default queue.
In one embodiment, as shown in figure 4, said apparatus also include:
3rd acquisition module 34, for reading according to the file name of pending file and processing the number in pending file
According to before, obtain the default expression formula corresponding with current thread；
Judge module 35, for the parameter of file name is matched with default expression formula, and judges according to matching result
Whether file to be stored is readable, and parameter includes the form of file name；
Correspondingly, the first read module 32, for when judging that file to be stored is readable, according to the file of pending file
Title reads and processes the data in pending file.
In one embodiment, as shown in figure 5, the 3rd acquisition module 34 includes:
First determining unit 341, for determining the quantity of default expression formula；
Second determining unit 342, is defined as when the quantity of default expression formula is unique, uniquely presetting expression formula
The default expression formula corresponding with current thread；
3rd determining unit 343, for when the quantity of default expression formula is identical with parallel multithreading quantity, according to pre-
If the corresponding relation of each thread and default expression formula determine the default expression formula corresponding with current thread.
Using device provided in an embodiment of the present invention, the filename of pending file actively can be obtained from default queue
Claim, and the data being read according to the file name of pending file and processing in pending file is so that reading pending literary composition
During part, can quick obtaining to pending file file name, thus improving the efficiency reading pending file, and, should
Technical scheme can stop reading pending file when the data reading meets pre-conditioned, and the data reading is write number
, and write again after the completion of not all of data all being read so that parallel multithreading can write in reading according in storehouse
Enter in data base, therefore improve the efficiency of data write to a great extent, save the time of computer processing data.
With regard to the device in above-described embodiment, wherein the concrete mode of modules execution operation is in relevant the method
Embodiment in be described in detail, explanation will be not set forth in detail herein.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can be using complete hardware embodiment, complete software embodiment or the reality combining software and hardware aspect
Apply the form of example.And, the present invention can be using in one or more computers wherein including computer usable program code
The shape of the upper computer program implemented of usable storage medium (including but not limited to disk memory and optical memory etc.)
Formula.
The present invention is the flow process with reference to method according to embodiments of the present invention, equipment (system) and computer program
Figure and/or block diagram are describing.It should be understood that can be by each stream in computer program instructions flowchart and/or block diagram
Flow process in journey and/or square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processor instructing general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device is to produce
A raw machine is so that produced for reality by the instruction of computer or the computing device of other programmable data processing device
The device of the function of specifying in present one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and can guide computer or other programmable data processing device with spy
Determine in the computer-readable memory that mode works so that the instruction generation inclusion being stored in this computer-readable memory refers to
Make the manufacture of device, this command device realize in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or
The function of specifying in multiple square frames.
These computer program instructions also can be loaded in computer or other programmable data processing device so that counting
On calculation machine or other programmable devices, execution series of operation steps to be to produce computer implemented process, thus in computer or
On other programmable devices, the instruction of execution is provided for realizing in one flow process of flow chart or multiple flow process and/or block diagram one
The step of the function of specifying in individual square frame or multiple square frame.
Obviously, those skilled in the art can carry out the various changes and modification essence without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprise these changes and modification.
Claims (10)
1. a kind of file reading is it is characterised in that be applied in parallel multithreading, comprising:
The file name of pending file is obtained from default queue；
Read according to the file name of described pending file and process the data in described pending file；
When the data of described reading meets pre-conditioned, stop reading described pending file, and the data by described reading
Write into Databasce.
2. method according to claim 1 is it is characterised in that the data volume of the described pre-conditioned data for described reading
Reach predetermined threshold value；
Correspondingly, described by after the data write into Databasce of described reading, methods described also includes:
Continue to read not processed data in described pending file.
3. method according to claim 1 it is characterised in that described pre-conditioned for the data in described pending file
All read；
Correspondingly, described by after the data write into Databasce of described reading, methods described also includes:
Continue to obtain the file name of next pending file from described default queue.
4. method according to claim 1 is it is characterised in that the described file name according to described pending file reads
And before the data processing in described pending file, methods described also includes:
Obtain the default expression formula corresponding with current thread；
The parameter of described file name is matched with described default expression formula, and waits to deposit according to described matching result judges
Whether storage file is readable, and described parameter includes the form of described file name；
Correspondingly, the described file name according to described pending file reads and processes the data in described pending file,
Including:
When judging that described file to be stored is readable, read according to the file name of described pending file and wait to locate described in processing
Data in reason file.
5. method according to claim 4 is it is characterised in that the described acquisition default expression corresponding with current thread
Formula, comprising:
Determine the quantity of described default expression formula；
When the quantity of described default expression formula is unique, described uniquely default expression formula is defined as corresponding with current thread
Default expression formula；
When the quantity of described default expression formula is identical with described parallel multithreading quantity, according to default each thread with default
The corresponding relation of expression formula determines the default expression formula corresponding with current thread.
6. a kind of document reading apparatus are it is characterised in that be applied in parallel multithreading, comprising:
First acquisition module, for obtaining the file name of pending file from default queue；
First read module, for reading according to the file name of described pending file and processing in described pending file
Data；
Writing module, for when the data of described reading meets pre-conditioned, stops reading described pending file, and by institute
State the data write into Databasce of reading.
7. device according to claim 6 is it is characterised in that the data volume of the described pre-conditioned data for described reading
Reach predetermined threshold value；Described device also includes:
Second read module, after the data write into Databasce by described reading, continues to read in described pending file
Not processed data.
8. device according to claim 6 it is characterised in that described pre-conditioned for the data in described pending file
All read；Described device also includes:
Second acquisition module, for continuing to obtain the file name of next pending file from described default queue.
9. device according to claim 6 is it is characterised in that described device also includes:
3rd acquisition module, for reading according to the file name of described pending file and processing in described pending file
Before data, obtain the default expression formula corresponding with current thread；
Judge module, for matching the parameter of described file name, and according to described coupling knot with described default expression formula
Fruit judges whether described file to be stored is readable, and described parameter includes the form of described file name；
Correspondingly, described first read module, for when judging that described file to be stored is readable, according to described pending file
File name read and process the data in described pending file.
10. device according to claim 9 is it is characterised in that described 3rd acquisition module includes:
First determining unit, for determining the quantity of described default expression formula；
Second determining unit, for when the quantity of described default expression formula is unique, described expression formula of uniquely presetting being determined
It is the default expression formula corresponding with current thread；
3rd determining unit, for when the quantity of described default expression formula is identical with described parallel multithreading quantity, according to
Default each thread determines the default expression formula corresponding with current thread with the corresponding relation of default expression formula.
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| CN201610712655.0A CN106354788A (en) | 2016-08-23 | 2016-08-23 | File reading method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610712655.0A CN106354788A (en) | 2016-08-23 | 2016-08-23 | File reading method and device |
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| CN106354788A true CN106354788A (en) | 2017-01-25 |
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| CN201610712655.0A Pending CN106354788A (en) | 2016-08-23 | 2016-08-23 | File reading method and device |
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| CN107844590A (en) * | 2017-11-17 | 2018-03-27 | 郑州云海信息技术有限公司 | Small documents moving method, device, equipment and computer-readable recording medium |
| CN108073703A (en) * | 2017-12-14 | 2018-05-25 | 郑州云海信息技术有限公司 | A kind of comment information acquisition methods, device, equipment and storage medium |
| CN115098454A (en) * | 2022-07-26 | 2022-09-23 | 北京天融信网络安全技术有限公司 | Data processing method and system |
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