CN108156173A - A kind of dynamic lossless compression method of JSON data packets - Google Patents
A kind of dynamic lossless compression method of JSON data packets Download PDFInfo
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- CN108156173A CN108156173A CN201810020580.9A CN201810020580A CN108156173A CN 108156173 A CN108156173 A CN 108156173A CN 201810020580 A CN201810020580 A CN 201810020580A CN 108156173 A CN108156173 A CN 108156173A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/04—Protocols for data compression, e.g. ROHC
Abstract
The invention discloses a kind of dynamic lossless compression methods of JSON data packets, are related to communication protocol, field of data compression.This method includes JSON data packet compressings flow and JSON data packets decompression flow；The JSON data packet compressings flow is completed by scanner, encoder, format checking device；The JSON data packets decompression flow is completed by format checking device, decoder.The present invention effectively reduces the size of JSON data, and when JSON data packets are bigger, compression effectiveness is better, and compression ratio is higher.
Description
Technical field
The present invention relates to communication protocol, field of data compression, the dynamic lossless compression side of specifically a kind of JSON data packets
Method.
Background technology
JSON is a kind of data interchange format of lightweight.Its a subset based on ECMAScript, using completely solely
The text formatting of programming language is stood on to store and represent data.It is succinct JSON to be caused to become ideal with clearly hierarchical structure
Data interchange language.It is easy to people to read and write, while is also easy to machine parsing and generation, and effectively promotes network transmission effect
Rate.So JSON often replaces XML to be used for transmitting data before server and client side.But when the data volume of transmission is excessive,
Disadvantages of the JSON in mobile Internet application is also following, causes the Internet resources such as consumed flow, bandwidth excessive.
In view of the above problems, there is the compression algorithm of some JSON data.The JSON data compressions increased income more at present
Algorithm is all to change the data structure of JSON to realize compression.The mode of processing be in JSON data repeat key or
Value processing, though it can achieve the purpose that compression in this way, when attribute is too many or when attribute is long in JSON data, pressure
The effect of contracting is unsatisfactory.
Invention content
In order to overcome the disadvantages of the above prior art, technical scheme of the present invention drawn some increase income algorithm the advantages of
While, it is too many or the problem of attribute is long for attribute in JSON data, and existing algorithm is improved.It is intended to
A kind of dynamic lossless compression method of more efficient efficiently JSON data packets is provided.
The present invention is realized with following technical solution:
A kind of dynamic lossless compression method of JSON data packets, this method include JSON data packet compressings flow and JSON numbers
Flow is decompressed according to packet；The JSON data packet compressings flow is completed by scanner, encoder, format checking device；It is described
JSON data packets decompress flow and are completed by format checking device, decoder.
Preferably, the JSON data packet compressings flow includes the following steps：
Step 1：For data sender before JSON data packets are sent, scanner can be to key all in JSON data packets
It is scanned with value, the key repeated and value is recorded, while the scanner also value long by key is recorded, in case
Encoder later suitably compresses it；
Step 2：The result scanned to scanner is carried out compression processing by encoder, for repeat key and value this
The key repeated and value are recorded in data dictionary for kind of situation, encoder, and are distinguished with unique serial number, and with key with
Value corresponding serial numbers in data dictionary replace key and value in original JSON data packets, and for the long feelings of key values
Condition, encoder are equally recorded data dictionary and are distinguished with unique serial number and replace the key values in former JSON data packets,
After the completion of work to be replaced, encoder is by data dictionary and replaces the JSON data packets of compressed JSON data packet groups Cheng Xin；
Step 3：The JSON data packets of new production after encoder compresses are carried out format checking by format checking device, it is ensured that pressure
JSON data packet formats after contracting are correct；If form correctly if return to compressed JSON data packets, otherwise return to error message,
And re-execute step 2.
Preferably, it is for the data dictionary of record repetition key and value and length long key in encoder
One map, for cause compression JSON data packets it is as small as possible, compression ratio it is as high as possible, it is specified that in data dictionary key data
Type uses int types, and the data type of value uses string types.
Preferably, encoder safeguards data dictionary, and preserving needs to be compressed or processing key and value, is saved
It is globally unique to be worth corresponding serial number, and serial number distribution principle is to be incremented by distribution since 1.
Preferably, when the key and value that are repeated in former JSON data and long property value are replaced by serial number, sequence
Started before number using " * " as identifier, used for decoder restoring data, when former JSON data include spcial character
When " * ", to " " character progress escape.
Preferably, format checking device in strict accordance with the format checking of JSON key-value pairs by compression treated JSON data
Packet, form correctly then return as former state, and format error then provides prompt message.
Preferably, the JSON data packets decompression flow includes the following steps：
Step 1：Data receiver is after compressed JSON data packets are received, and format checking device is to the JSON numbers of reception
Format checking is carried out according to packet, to prevent data from the problem of loss of data occur in transmission process or other links, if form is correct
Step 2 is then performed, otherwise returns to error message；
Step 2：The JSON data packets exported to form detector are decoded and are reduced into former JSON data by decoder
Packet, and return to the recipient of data.
Preferably, the workflow of the decoder includes the following steps：
Step 1：Decoder obtains corresponding data dictionary in JSON data packets according to fixed key values first；
Step 2：After getting data dictionary, all categories started with identifier " * " in decoder traversal JSON data packets
Property value, the corresponding occurrence of serial number is searched in data dictionary, and resulting value is replaced into go back to the position of identifier, until having traversed
All key-value pairs in JSON data packets；
Step 3：It generates new JSON data packets after the completion of replacing and returns to user.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) the advantages of being integrated with prior art scheme；
(2) efficiently solve such case that attribute is excessive in JSON data or attribute is long, to existing algorithm into
It has gone improvement, has improved the compression ratio of JSON data packets, reduced the Internet resources such as bandwidth, flow.
Description of the drawings
Fig. 1 is the overall structure diagram in the present invention；
Fig. 2 is JSON data packet compressing work flow diagrams in the present invention；
Fig. 3 is JSON data packet decompression work flow charts in the present invention；
Fig. 4 is the work flow diagram of decoder in the present invention.
Specific embodiment
Below in conjunction with attached drawing, by specific embodiment, the present invention is further illustrated.
As shown in Figure 1, a kind of dynamic lossless compression method of JSON data packets, this method share scanner, encoder, lattice
Four formula detector, decoder parts.For data sender before JSON data packets are sent, scanner can be to JSON data first
All key and value are scanned in packet, and the key repeated and value are recorded, while scanner will also record key
Long value, in case encoder suitably compresses it；Secondly encoder will be handled the result of scanning, for repeating
Key and value such cases, encoder is recorded in data dictionary, is distinguished with unique serial number, and replaced with serial number
Key and value in former JSON data packets, in the case of key values are long, data dictionary is equally recorded simultaneously in encoder
It is distinguished with unique serial number and replaces the key values in former JSON data packets, after the completion of work to be replaced, encoder is by data dictionary
With the JSON data packets of replaced JSON data packet groups Cheng Xin；Then format checking device by the JSON data packets of new production into
Row format inspection, it is ensured that compressed JSON data packet formats are correct；Finally when data receiver need to parse it is compressed
During JSON, decoder will be decoded the JSON data packets of compression and be reduced into former JSON data packets.
As shown in Fig. 2, JSON data packet compressings flow is completed by scanner, encoder, format checking device, workflow
Journey is specific as follows：
Step 1：For data sender before JSON data packets are sent, scanner can be to key all in JSON data packets
It is scanned with value, the key repeated and value is recorded, while the scanner also value long by key is recorded, in case
Encoder later suitably compresses it；
Step 2：The result scanned to scanner is carried out compression processing by encoder, for repeat key and value this
The key repeated and value are recorded in data dictionary for kind of situation, encoder, and are distinguished with unique serial number, and with key with
Value corresponding serial numbers in data dictionary replace key and value in original JSON data packets, and for the long feelings of key values
Condition, encoder are equally recorded data dictionary and are distinguished with unique serial number and replace the key values in former JSON data packets,
After the completion of work to be replaced, encoder is by data dictionary and replaces the JSON data packets of compressed JSON data packet groups Cheng Xin；
Step 3：The JSON data packets of new production after encoder compresses are carried out format checking by format checking device, it is ensured that pressure
JSON data packet formats after contracting are correct；If form correctly if return to compressed JSON data packets, otherwise return to error message,
And re-execute step 2.
Further embodiment is：
Data dictionary in encoder for record repetition key and value and length long key is a map, is
So that the JSON data packets of compression are as small as possible, compression ratio is as high as possible, it is specified that the data type of key uses in data dictionary
Int types, the data type of value use string types.
Encoder safeguards data dictionary, and preserving needs to be compressed or processing key and value, and the value being saved is corresponding
Serial number is globally unique, and serial number distribution principle is to be incremented by distribution since 1.
When the key and value that are repeated in former JSON data and long property value are replaced by serial number, with " * " before serial number
Beginning is used as being identifier for decoder restoring data, when former JSON data include spcial character " * ", to
" " character progress escape.
Format checking device is in strict accordance with the format checking of JSON key-value pairs by compression treated JSON data packets, and form is just
True then original sample returns, and format error then provides prompt message.
It is completed as shown in figure 3, JSON data packets decompress flow by format checking device, decoder, workflow tool
Body is as follows：
Step 1：Data receiver is after compressed JSON data packets are received, and format checking device is to the JSON numbers of reception
Format checking is carried out according to packet, to prevent data from the problem of loss of data occur in transmission process or other links, if form is correct
Step 2 is then performed, otherwise returns to error message；
Step 2：The JSON data packets exported to form detector are decoded and are reduced into former JSON data by decoder
Packet, and return to the recipient of data.
As shown in figure 4, the workflow of decoder is specific as follows in the present invention：
Step 1：Decoder obtains corresponding data dictionary in JSON data packets according to fixed key values first；
Step 2：After getting data dictionary, all categories started with identifier " * " in decoder traversal JSON data packets
Property value, the corresponding occurrence of serial number is searched in data dictionary, and resulting value is replaced into go back to the position of identifier, until having traversed
All key-value pairs in JSON data packets；
Step 3：It generates new JSON data packets after the completion of replacing and returns to user.
As shown from the above technical solution, this method is integrated with the advantages of prior art scheme；Efficiently solve JSON data
Such case that middle attribute is excessive or attribute is long, improves existing algorithm, improves the pressure of JSON data packets
Shrinkage reduces the Internet resources such as bandwidth, flow.
The above is only the designing scheme of the present invention, not makees limitation in any form to the present invention, although this hair
It is bright disclosed above with preferred embodiment, however the present invention is not limited to, any person skilled in the art, not
It is detached from the range of technical solution of the present invention, when the technology contents using the disclosure above make a little change or are modified to equivalent change
The equivalent embodiment of change, as long as being the content without departing from technical solution of the present invention, technical spirit according to the present invention is to above real
Any simple modification, equivalent change and modification that example is made is applied, in the range of still falling within technical solution of the present invention.
Claims (8)
1. a kind of dynamic lossless compression method of JSON data packets, it is characterised in that：This method includes JSON data packet compressing streams
Journey and JSON data packets decompression flow；
The JSON data packet compressings flow is completed by scanner, encoder, format checking device；
The JSON data packets decompression flow is completed by format checking device, decoder.
A kind of 2. dynamic lossless compression method of JSON data packets according to claim 1, which is characterized in that the JSON
Data packet compressing flow includes the following steps：
Step 1：Data sender before JSON data packets are sent, scanner can to key all in JSON data packets and
Value is scanned, and the key repeated and value are recorded, while the scanner also value long by key is recorded, in case it
Encoder afterwards suitably compresses it；
Step 2：The result scanned to scanner is carried out compression processing by encoder, for the key and this feelings of value repeated
The key repeated and value are recorded in data dictionary for condition, encoder, and are distinguished with unique serial number, and with key and value
Corresponding serial number replaces the key and value in original JSON data packets in data dictionary, and in the case of key values are long, it compiles
Code device is equally recorded data dictionary and is distinguished with unique serial number and replace the key values in former JSON data packets, waits to replace
After the completion of changing jobs, encoder is by data dictionary and replaces the JSON data packets of compressed JSON data packet groups Cheng Xin；
Step 3：The JSON data packets of new production after encoder compresses are carried out format checking by format checking device, it is ensured that after compression
JSON data packet formats it is correct；If form correctly if return to compressed JSON data packets, otherwise return to error message, lay equal stress on
It is new to perform step 2.
3. a kind of dynamic lossless compression method of JSON data packets according to claim 2, it is characterised in that：In encoder
Data dictionary for record repetition key and value and length long key is a map, to cause the JSON numbers of compression
As small as possible according to wrapping, compression ratio is as high as possible, it is specified that the data type of key uses int types, the number of value in data dictionary
String types are used according to type.
4. a kind of dynamic lossless compression method of JSON data packets according to claim 2, it is characterised in that：Encoder is tieed up
Protect data dictionary, preserve need it is to be compressed or processing key and value, the corresponding serial number of value being saved be it is globally unique,
Serial number distribution principle is to be incremented by distribution since 1.
5. a kind of dynamic lossless compression method of JSON data packets according to claim 2, it is characterised in that：Former JSON numbers
When being replaced according to the key and value and long property value of middle repetition by serial number, started before serial number using " * " as identifier,
It is used for decoder restoring data, when former JSON data include spcial character " * ", to " " character progress escape.
6. a kind of dynamic lossless compression method of JSON data packets according to claim 2, it is characterised in that：Format checking
Device is in strict accordance with the format checking of JSON key-value pairs by compression treated JSON data packets, and form correctly then returns as former state, lattice
Formula mistake then provides prompt message.
A kind of 7. dynamic lossless compression method of JSON data packets according to claim 1, which is characterized in that the JSON
Data packet decompression flow includes the following steps：
Step 1：Data receiver is after compressed JSON data packets are received, and format checking device is to the JSON data packets of reception
Carry out format checking, to prevent data from the problem of loss of data occur in transmission process or other links, if form correctly if hold
Row step 2, otherwise returns to error message；
Step 2：The JSON data packets exported to form detector are decoded by decoder is reduced into former JSON data packets, and
Return to the recipient of data.
A kind of 8. dynamic lossless compression method of JSON data packets according to claim 7, which is characterized in that the decoding
The workflow of device includes the following steps：
Step 1：Decoder obtains corresponding data dictionary in JSON data packets according to fixed key values first；
Step 2：After getting data dictionary, all attributes started with identifier " * " in decoder traversal JSON data packets
Value searches the corresponding occurrence of serial number in data dictionary, and resulting value is replaced back to the position of identifier, until having traversed
All key-value pairs in JSON data packets；
Step 3：It generates new JSON data packets after the completion of replacing and returns to user.
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| CN108875082A (en) * | 2018-07-17 | 2018-11-23 | 北京奇安信科技有限公司 | A kind of Large Volume Data read-write processing method and device |
| CN108924770A (en) * | 2018-07-27 | 2018-11-30 | 中船电子科技有限公司 | A kind of customs preventive execution method based on short message |
| CN109413077A (en) * | 2018-11-07 | 2019-03-01 | 北京奇艺世纪科技有限公司 | A kind of receiving/transmission method, device and the electronic equipment of JSON message data |
| CN109450450A (en) * | 2018-10-17 | 2019-03-08 | 杭州费尔斯通科技有限公司 | A kind of compression of JSON data real non-destructive and decompressing method |
| CN110163755A (en) * | 2019-04-30 | 2019-08-23 | 阿里巴巴集团控股有限公司 | Data compression, querying method and device and electronic equipment based on block chain |
| CN110247665A (en) * | 2019-05-16 | 2019-09-17 | 芜湖智久机器人有限公司 | Compression method, device and the computer readable storage medium of JSON data |
| CN110659322A (en) * | 2019-09-20 | 2020-01-07 | 南方电网科学研究院有限责任公司 | Method, device and system for processing operation parameters of power distribution network |
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| CN114665887A (en) * | 2022-05-24 | 2022-06-24 | 成都索贝视频云计算有限公司 | JSON character string data compression method based on overall compression |
| CN115002234A (en) * | 2022-05-25 | 2022-09-02 | 阿维塔科技(重庆)有限公司 | Data message conversion method, device, equipment and computer readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108875082A (en) * | 2018-07-17 | 2018-11-23 | 北京奇安信科技有限公司 | A kind of Large Volume Data read-write processing method and device |
| CN108924770A (en) * | 2018-07-27 | 2018-11-30 | 中船电子科技有限公司 | A kind of customs preventive execution method based on short message |
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| CN114665887A (en) * | 2022-05-24 | 2022-06-24 | 成都索贝视频云计算有限公司 | JSON character string data compression method based on overall compression |
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Application publication date: 20180612 |