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A http retrieval method for csv fragments identified by uri

A fragment and identification technology, applied in the field of HTTP retrieval of CSV fragments, can solve problems such as no method or technical solution, and achieve the effect of saving network bandwidth and shortening communication delay

Active Publication Date: 2019-09-10
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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  • A http retrieval method for csv fragments identified by uri
  • A http retrieval method for csv fragments identified by uri

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Embodiment Construction

[0035] Specific embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar concepts, objects, elements, etc. or concepts with the same or similar functions, objects, elements, etc. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0036] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be inter...

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Abstract

The invention discloses an HTTP (Hyper Text Transport Protocol) retrieval method for a CSV (Comma-Separated Values) fragment marked by a URI (Uniform Resource Identifier). The HTTP retrieval method comprises the following steps that: a client resolves a fragment URI and obtains a main resource URI and a CSV fragment identifier; the client sends the selection mode and the selection range of the CSV fragment to a server; the server extracts the CSV fragment according to the selection mode and the selection range of the CSV fragment; the server returns the extracted CSV fragment to the client; and the client obtains the CSV fragment and displays or stores the CSV fragment. The HTTP retrieval method for the CSV fragment marked by the URI disclosed by the invention has the advantages that on one hand, the expansion on a current HTTP / 1.1 protocol is not needed; and on the other hand, the RFC 7111 international standard 'URI Fragment Identifiers for the Text / CSV Media Type' is supported, and compared with a conventional technical scheme of extracting the fragment after the client downloads a complete CSV file, the method provided by the invention has the advantages that the network bandwidth can be greatly reduced, and the communication time delay is reduced.

Description

technical field [0001] The invention relates to an HTTP retrieval method for network resources in the technical field of Internet communication, in particular to an HTTP retrieval method for a CSV fragment identified by a URI. Background technique [0002] Open data movements in the fields of science and e-government have led to a dramatic increase in comma-separated values ​​(comma-separated values, CSV) format tabular data (tabular data) on the World Wide Web (Web), and CSV files tend to have huge sizes (total number of bytes). This brings great challenges to web client applications that need to process or consume a portion of data or fragments in CSV files, because the complete CSV file is retrieved and downloaded from the server and then extracted. The traditional technical solutions of fragments require a large network bandwidth and time cost. [0003] The format of using CSV files on the Web and its Internet media type (Internet media type) are regulated by RFC4180 (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/953G06F16/955
Inventor 许卓明王骏华张进
Owner HOHAI UNIV
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