CN103248530B - A kind of shunting detection method of the tagged word based on floating position and device - Google Patents
A kind of shunting detection method of the tagged word based on floating position and device Download PDFInfo
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Abstract
The present invention is applicable to computer application field, and provide a kind of tagged word based on floating position shunting detection method and device, described method comprises: the tagged word window list item in configuration shunting device needed for user; The message extracting input comprises the information field of tagged word, and generates first information field and the second information field according to information field; First information field and the second information field are compared one by one with the window list item in shunting device respectively; When any one of first information field or the second information field is identical with one of described window list item, the message of input is sent to back-end server; When first information field and the second information field are all different from window list item, abandon the message of input.The invention enables and need the floating tagged word entry stored to greatly reduce, add the quantity of the tagged word that can store in shunting device.
Description
Technical field
The invention belongs to computer application field, particularly relate to a kind of tagged word based on floating position shunting detection method and device.
Background technology
In the Internet, different application depends on different agreements usually, and the information that different agreements has it special, namely tagged word.According to the difference of detection mode, the recognition technology of feature based word can be divided into fixed position tagged word coupling, the characteristic matching of floating position and status flag to mate three kinds of technology.
Wherein, in the existing tagged word based on floating position detects, main employing shunts comparative approach, be specially: the scope that tagged word occurs is called window, to need the information field comprising message characteristic word detected in advance, namely window list item, is stored in shunting device.Then, extract the information field comprising tagged word in the message of input, i.e. Key, the length of this information field (Key) is identical with the length of window list item, and the length shared by tagged word is no more than 1/2nd of window list item length.By information field with compared with window list item, if identical, just message delivered to back-end server and process; If not identical, illustrate in incoming message and there is no interested content and process accordingly.
Due to the window list item prestored in shunting device, behind all positions needing the tagged word in traversal detection window to exist, using the position at each tagged word place as a window list item, when window is larger, the window list item stored in shunting device also can be a lot, thus the memory space taken also can be very large, as shown in Figure 1, the length of window is 8 units, tagged word is AB, the length of tagged word is 2 units, then need to take 7 window list items, just can complete the detection of floating position.If be 128 units with window, tagged word is 2 units is example, and so in shunting device, need storage 127 list items, what guarantee was correct carries out floating position detection.As can be seen here, along with the increase of length of window, the wall scroll tagged word that floats also can increase in requisition for the entry of window list item stored thereupon.Like this, under the condition that memory capacity is limited in shunting device, the total quantity of the floating tagged word that can identify greatly reduces, and have impact on performance and the detection efficiency of shunting device.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of tagged word based on floating position to shunt detection method and device, under being intended to the solution condition that memory capacity is limited in shunting device, because the total quantity of the floating tagged word that can identify greatly reduces, thus have impact on the performance of shunting device and the problem of detection efficiency.
The embodiment of the present invention is achieved in that a kind of tagged word based on floating position shunting detection method, and described method comprises:
Tagged word window list item in configuration shunting device needed for user;
The message extracting input comprises the information field of tagged word, and generates first information field and the second information field according to described information field;
Described first information field and the second information field are compared one by one with the window list item in described shunting device respectively;
When any one of described first information field or the second information field is identical with one of described window list item, the message of described input is sent to back-end server;
When described first information field and the second information field are all different from described window list item, abandon the message of described input.
Another object of the embodiment of the present invention is to provide a kind of tagged word based on floating position to divide flow detection device, and described device comprises:
Dispensing unit, for configuring the tagged word window list item in shunting device needed for user;
Information field extraction unit, the message for extracting input comprises the information field of tagged word, and generates first information field and the second information field according to described information field;
Shunting comparing unit, for comparing described first information field and the second information field one by one with the window list item in described shunting device respectively;
Message process unit, for when any one of described first information field or the second information field is identical with one of described window list item, is sent to back-end server by the message of described input;
Packet loss unit, for when described first information field and the second information field are all different from described window list item, abandons the message of described input.
In embodiments of the present invention, by when shunting device memory window list item entry, utilize the symmetry reduction window list item entry of window, after the message extracting input comprises the information field of tagged word, information field is divided into first information field and the second information field, exists by first information field and the second information field are compared with the window list item in described shunting device the feature detecting floating position respectively one by one.Make to need the floating tagged word entry stored to greatly reduce, add the quantity of the tagged word that can store in shunting device.And the field information comprising tagged word in incoming message is transformed two class field informations, the detection of floating tagged word is become simply, reliably, substantially increases shunting device to the detection perform of floating tagged word and efficiency.
Accompanying drawing explanation
Fig. 1 is the window list item example of the tagged word detection method based on floating position that prior art provides;
Fig. 2 is the flow chart of the shunting of the tagged word based on the floating position detection method that the embodiment of the present invention provides;
Fig. 3 is the comparison diagram of employing prior art the window list item configured and the window list item adopting the present invention to configure that the embodiment of the present invention provides;
Fig. 4 is the comparison diagram of employing prior art the window list item configured and the window list item adopting the present invention to configure that the embodiment of the present invention provides;
Fig. 5 is the preferred embodiment schematic diagram generating first information field and the second information field according to information field that the embodiment of the present invention provides;
Fig. 6 is the structural representation that the tagged word based on floating position that the embodiment of the present invention provides divides flow detection device.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The embodiment of the present invention provides a kind of tagged word based on floating position to shunt detection method, by when shunting device memory window list item entry, the symmetry of window is utilized window list item entry to be reduced to valid window list item and polishing window list item two class, after the message extracting input comprises the information field of tagged word, information field is divided into first information field and the second information field, exists by first information field and the second information field are compared with the window list item in described shunting device the feature detecting floating position respectively one by one.Make to need the floating tagged word entry stored to greatly reduce, add the quantity of the tagged word that can store in shunting device.
The invention provides a kind of tagged word based on floating position shunting detection method and device:
Described method comprises:
Tagged word window list item in configuration shunting device needed for user;
The message extracting input comprises the information field of tagged word, and generates first information field and the second information field according to described information field;
Described first information field and the second information field are compared one by one with the window list item in described shunting device respectively;
When any one of described first information field or the second information field is identical with one of described window list item, the message of described input is sent to back-end server;
When described first information field and the second information field are all different from described window list item, abandon the message of described input.
Described device comprises:
Dispensing unit, for configuring the tagged word window list item in shunting device needed for user;
Information field extraction unit, the message for extracting input comprises the information field of tagged word, and generates first information field and the second information field according to described information field;
Shunting comparing unit, for comparing described first information field and the second information field one by one with the window list item in described shunting device respectively;
Message process unit, for when any one of described first information field or the second information field is identical with one of described window list item, is sent to back-end server by the message of described input;
Packet loss unit, for when described first information field and the second information field are all different from described window list item, abandons the message of described input.
In order to technical solutions according to the invention are described, be described below by specific embodiment.
Embodiment one:
Be illustrated in figure 2 the flow chart of the tagged word based on floating position provided by the invention shunting detection method, for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.
In step s 201, the tagged word window list item in shunting device needed for user is configured.
In embodiments of the present invention, first carry out power-up initializing to shunting device, the tagged word window list item then in shunting device needed for configure user, the window list item configured includes but not limited to valid window list item and polishing window list item.The window that valid window list item refers to extract tagged word is limited, continuous write-in characteristic word from the high order end of window, until the significance bit of tagged word maintains an equal level with extraction unit, when the length of window is even number, described extraction unit is 1/2nd of length of window, when the length of window is odd number, extracting unit is that length of window adds 1/2nd after one; Polishing window list item is the entry by causing tagged word overlap after window two points, and the entry number of polishing window is that tagged word length subtracts one.After determining the tagged word needed for user, the tagged word determination valid window list item needed for the size of window and user and polishing window list item.As: when length of window is 8, when tagged word length is 2, valid window list item quantity is 3, and polishing number of windows is 1.
Cite an actual example below to be described in detail.If tagged word is AB, when length of window is 8, Fig. 3 is the comparison diagram of employing prior art the window list item configured and the window list item adopting the present invention to configure; If tagged word is AB, when length of window is 7, Fig. 4 is the comparison diagram of employing prior art the window list item configured and the window list item adopting the present invention to configure.
As Fig. 3 and Fig. 4 is known, be 2 in tagged word length, when length of window is 7 or 8, adopt existing method allocation window list item then to have 7 window list items, adopt the present invention then to only have 3 valid window list items and 1 polishing window list item, greatly reduce the quantity of window list item.When tagged word length and length of window identical, the tagged word capacity that shunting device can be identified is doubled, improve shunting detect efficiency and utilance.
In step S202, the message extracting input comprises the information field of tagged word, and generates first information field and the second information field according to described information field.
In embodiments of the present invention, after window list item has been configured, complete the initialization of shunting device, shunting device is made to start normal work, the message extracting input comprises the information field (Key) of tagged word, and utilize the effective length of tagged word to be no more than 1/2nd these characteristics of length of window and the symmetry of window, generate first information field and the second information field according to information field (Key).When the length of information field is even number, first information field is identical with information field, and with 1/2nd of information field for boundary, after the first half field of information field and latter half field are exchanged, using the information field after exchange as the second information field; When the length of information field is odd number, first information field is identical with information field, and add 1/2nd after one for boundary with information field length, after the first half field of information field and latter half field being exchanged, using the information field after exchange as the second information field.
Point-score like this, according to tagged word position, three kinds of results can be obtained, be respectively: tagged word is positioned at the first half of window, tagged word is positioned at the latter half of window and tagged word front and back two parts across window, as shown in Figure 6 (wherein, first information field is Key0, and the second information field is Key1).Owing to generating first information field and the second information field according to information field, the situation that therefore only need be arranged in the first half of window according to tagged word configures valid window list item at shunting device in advance, configures polishing window list item according to tagged word in advance across situation two-part before and after window in shunting device.
In step S203, the window list item in first information field and shunting device is compared one by one, if perform step S206 when first information field is identical with one of window list item, otherwise perform step S204.
In embodiments of the present invention, the window list item in first information field and shunting device is compared one by one, according to the result relatively, the message of input is shunted.
In step S204, the window list item in the second information field and shunting device is compared one by one, if perform step S206 when the second information field is identical with one of window list item, otherwise perform step S205.
In embodiments of the present invention, if when first information field is all not identical with the window list item in shunting device, just the window list item in the second information field and shunting device is compared one by one.
In step S205, abandon the message of input.
In embodiments of the present invention, when any one of first information field or the second information field is identical with one of window list item, the message of input is sent to back-end server.
In step S206, the message of input is sent to back-end server.
In embodiments of the present invention, when first information field and the second information field are all different from window list item, the message of input is abandoned.
In embodiments of the present invention, by when shunting device memory window list item entry, the symmetry of window is utilized window list item entry to be reduced to valid window list item and polishing window list item two class, after the message extracting input comprises the information field of tagged word, information field is divided into first information field and the second information field, exists by first information field and the second information field are compared with the window list item in described shunting device the feature detecting floating position respectively one by one.Make to need the floating tagged word entry stored to greatly reduce, add the quantity of the tagged word that can store in shunting device.And the field information comprising tagged word in incoming message is transformed two class field informations, the detection of floating tagged word is become simply, reliably, substantially increases shunting device to the detection perform of floating tagged word and efficiency.
Embodiment two:
The structural representation of the tagged word part flow arrangement based on floating position that Fig. 6 provides for the embodiment of the present invention, for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.Wherein:
Dispensing unit 61, for configuring the tagged word window list item in shunting device needed for user.
In embodiments of the present invention, first carry out power-up initializing to shunting device, the tagged word window list item then in shunting device needed for configure user, the window list item configured includes but not limited to valid window list item and polishing window list item.The window that valid window list item refers to extract tagged word is limited, continuous write-in characteristic word from the high order end of window, until the significance bit of tagged word maintains an equal level with extraction unit, when the length of window is even number, described extraction unit is 1/2nd of length of window, when the length of window is odd number, extracting unit is that length of window adds 1/2nd after one; Polishing window list item is the entry by causing tagged word overlap after window two points, and the entry number of polishing window is that tagged word length subtracts one.After determining the tagged word needed for user, the tagged word determination valid window list item needed for the size of window and user and polishing window list item.
Information field extraction unit 62, the message for extracting input comprises the information field of tagged word, and generates first information field and the second information field according to information field.
In embodiments of the present invention, described information field extraction unit 62 comprises two subelements, wherein:
Even location 621, for when the length of ceased field is even number, first information field is identical with information field, with 1/2nd of information field for boundary, after the first half field of information field and latter half field are exchanged, using the information field after exchange as the second information field.
Odd location 622, for when the length of information field is odd number, first information field is identical with information field, / 2nd after one is added for boundary with information field length, after the first half field of information field and latter half field are exchanged, using the information field after exchange as the second information field.
Shunting comparing unit 63, for comparing first information field and the second information field one by one with the window list item in shunting device respectively.
Message process unit 64, for when any one of first information field or the second information field is identical with one of window list item, is sent to back-end server by the message of input;
Packet loss unit 65, for when first information field and the second information field are all different from window list item, abandons the message of input.
In embodiments of the present invention, by when shunting device memory window list item entry, the symmetry of window is utilized window list item entry to be reduced to valid window list item and polishing window list item two class, after the message extracting input comprises the information field of tagged word, information field is divided into first information field and the second information field, exists by first information field and the second information field are compared with the window list item in described shunting device the feature detecting floating position respectively one by one.Make to need the floating tagged word entry stored to greatly reduce, add the quantity of the tagged word that can store in shunting device.And the field information comprising tagged word in incoming message is transformed two class field informations, the detection of floating tagged word is become simply, reliably, substantially increases shunting device to the detection perform of floating tagged word and efficiency.
One of ordinary skill in the art will appreciate that, the all or part of step realized in above-described embodiment method is that the hardware that can carry out instruction relevant by program has come, described program can be stored in a computer read/write memory medium, described storage medium, as ROM/RAM, disk, CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1., based on a tagged word shunting detection method for floating position, it is characterized in that, described method comprises the steps:
Tagged word window list item in configuration shunting device needed for user;
The message extracting input comprises the information field of tagged word, and generates first information field and the second information field according to described information field;
Described first information field and the second information field are compared one by one with the window list item in described shunting device respectively;
When any one of described first information field or the second information field is identical with one of described window list item, the message of described input is sent to back-end server;
When described first information field and the second information field are all different from described window list item, abandon the message of described input;
The described message extracting input comprises the information field of tagged word, and comprises according to described information field generation first information field and the second information field:
When the length of described information field is even number, first information field is identical with described information field, with 1/2nd of described information field for boundary, after the first half field of described information field and latter half field are exchanged, using the information field after exchange as the second information field;
When the length of described information field is odd number, first information field is identical with described information field, / 2nd after one is added for boundary with information field length, after the first half field of described information field and latter half field are exchanged, using the information field after exchange as the second information field.
2. the method for claim 1, is characterized in that, described window list item comprises valid window list item and polishing window list item.
3. method as claimed in claim 2, it is characterized in that, the window that described valid window list item refers to extract tagged word is limited, continuous write-in characteristic word from the high order end of window, until the significance bit of tagged word maintains an equal level with extraction unit, when the length of window is even number, described extraction unit is 1/2nd of length of window, when the length of window is odd number, extracting unit is that length of window adds 1/2nd after one; Polishing window is the entry by causing tagged word overlap after window two points, and the entry number of polishing window is that tagged word length subtracts one.
4. the tagged word based on floating position divides a flow detection device, it is characterized in that, described device comprises:
Dispensing unit, for configuring the tagged word window list item in shunting device needed for user;
Information field extraction unit, the message for extracting input comprises the information field of tagged word, and generates first information field and the second information field according to described information field;
Shunting comparing unit, for comparing described first information field and the second information field one by one with the window list item in described shunting device respectively;
Message process unit, for when any one of described first information field or the second information field is identical with one of described window list item, is sent to back-end server by the message of described input;
Packet loss unit, for when described first information field and the second information field are all different from described window list item, abandons the message of described input;
Described information field extraction unit comprises:
Even location, for when the length of described information field is even number, first information field is identical with described information field, with 1/2nd of described information field for boundary, after the first half field of described information field and latter half field are exchanged, using the information field after exchange as the second information field;
Odd location, for when the length of described information field is odd number, first information field is identical with described information field, / 2nd after one is added for boundary with information field length, after the first half field of described information field and latter half field are exchanged, using the information field after exchange as the second information field.
5. device as claimed in claim 4, it is characterized in that, described window list item comprises valid window list item and polishing window list item.
6. device as claimed in claim 5, it is characterized in that, the window that described valid window list item refers to extract tagged word is limited, continuous write-in characteristic word from the high order end of window, until the significance bit of tagged word maintains an equal level with extraction unit, when the length of window is even number, described extraction unit is 1/2nd of length of window, when the length of window is odd number, extracting unit is that length of window adds 1/2nd after one; Polishing window is the entry by causing tagged word overlap after window two points, and the entry number of polishing window is that tagged word length subtracts one.
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| US7784094B2 (en) * | 2005-06-30 | 2010-08-24 | Intel Corporation | Stateful packet content matching mechanisms |
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| CN101183988A (en) * | 2007-11-19 | 2008-05-21 | 华为技术有限公司 | Method of identifying packet corresponding service types and device thereof |
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Denomination of invention: Testing method and device for distribution of tagged word based on floating position Effective date of registration: 20170713 Granted publication date: 20151216 Pledgee: Bank of Beijing Limited by Share Ltd Shenzhen branch Pledgor: Shenzhen Hengxin data Limited by Share Ltd Registration number: 2017990000630 |
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Denomination of invention: A detection method and device of feature word diversion based on floating position Effective date of registration: 20200826 Granted publication date: 20151216 Pledgee: Bank of Beijing Limited by Share Ltd. Shenzhen branch Pledgor: Shenzhen Hengyang Data Co.,Ltd. Registration number: Y2020980005382 |
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Denomination of invention: A feature word shunt detection method and device based on floating position Effective date of registration: 20210816 Granted publication date: 20151216 Pledgee: Bank of Beijing Limited by Share Ltd. Shenzhen branch Pledgor: Shenzhen Hengyang Data Co.,Ltd. Registration number: Y2021440020082 |