CN110278181B - Instant protocol conversion system for cross-network data exchange - Google Patents
Instant protocol conversion system for cross-network data exchange Download PDFInfo
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- CN110278181B CN110278181B CN201910083977.7A CN201910083977A CN110278181B CN 110278181 B CN110278181 B CN 110278181B CN 201910083977 A CN201910083977 A CN 201910083977A CN 110278181 B CN110278181 B CN 110278181B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
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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
- H04L69/08—Protocols for interworking; Protocol conversion
Abstract
The invention discloses an instant protocol conversion system related to cross-network data exchange, which comprises a VPN private network requester, a VPN private network server, an access gateway, cross-domain safety isolation equipment, a data exchange control system, a public security network server and a public security network requester, wherein the VPN private network requester and the access gateway transmit data, the access gateway transmits data with the VPN private network server and the data exchange control system, the cross-domain safety isolation equipment is arranged between the access gateway and the data exchange control system, and the data exchange control system exchanges data with the public security network server and the public security network requester. The method has the advantages that the method is suitable for network gate equipment of a plurality of manufacturers, simultaneously encapsulates the data synchronization function, solves the problem that only file synchronization and database synchronization can be carried out, provides a real-time http interface agent for the client, and can directly initiate a request through http.
Description
Technical Field
The invention relates to the technical field of information, in particular to an instant protocol conversion system for cross-network data exchange.
Background
At present, data exchange among information systems of cross-network, cross-operating system and heterogeneous database is realized by a data exchange platform, and the problem of information island is solved, but the data exchange efficiency and performance are low, especially under the condition that cross-network section is exchanged based on a gatekeeper, the data exchange between two different networks is limited in file synchronization and database synchronization, a common http protocol cannot be accessed in real time, and an exchange mode of the gatekeeper needs to be adapted every time the cross-gatekeeper exchange service is realized, so that the development period is long, and the performance is not optimal. Accordingly, those skilled in the art have provided an instant protocol conversion system for cross-network data exchange to solve the problems set forth in the background art described above.
Disclosure of Invention
The present invention is directed to a system for converting an instant protocol for cross-network data exchange, which solves the above-mentioned problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
an instant protocol conversion system related to cross-network data exchange comprises a VPN private network requester, a VPN private network server, an access gateway, cross-domain security isolation equipment, a data exchange control system, a public security network server and a public security network requester, wherein data transmission is carried out between the VPN private network requester and the access gateway, data transmission is carried out between the access gateway and the VPN private network server as well as between the access gateway and the data exchange control system, the cross-domain security isolation equipment is arranged between the access gateway and the data exchange control system, and the data exchange control system carries out data exchange with the public security network server and the public security network requester;
the data conversion modes among the VPN private network requester, the VPN private network server, the access gateway, the data exchange control system, the public security network server and the public security network requester are five transmission modes;
the first transmission mode is as follows: a VPN private network requester initiates a public security network shared resource request process, analyzes and converts VPN private network request data to generate a request file meeting a shared data standard, transmits the request file to a data exchange control system, receives and analyzes the file, and the data exchange control system accesses public security network shared resources and returns a result;
the second transmission mode is as follows: the VPN private network requester initiates a request process for another VPN private network service provider resource, the access gateway analyzes and converts VPN private network request data to generate a request file meeting a shared data standard, transmits the request file to the data exchange control system, receives the file and analyzes the file, the data exchange control system accesses the VPN private network service provider resource through the access gateway and returns a result to the VPN private network requester;
the third transmission mode is as follows: the public security network requester initiates a VPN private network service provider resource request process, analyzes and converts request data to generate a request file meeting a shared data standard, transmits the request file to the access gateway, and the access gateway receives and analyzes the file, accesses the VPN private network service provider resource and returns a result;
the fourth transmission mode is as follows: the VPN private network requester initiates a public security network data exchange process, carries out format specification verification on a request file submitted by the VPN private network, generates a request file meeting specification requirements, transmits the request file to a data exchange control system to receive the file, and the data exchange control system submits the request file to a public security network server and returns a requested response file;
the fifth transmission mode is as follows: the VPN private network requester initiates a data exchange service process for another VPN private network service provider resource, the format specification of a request file submitted by the VPN private network is verified, the request file meeting the specification requirement is generated and transmitted to the data exchange control system for receiving, the data exchange control system sends the request file to the VPN private network service provider resource through the access gateway, and a response data file is returned to the VPN private network requester.
As a further scheme of the present invention, the first transmission mode specifically comprises the following steps:
(1) a VPN private network requester calls a requester interface to submit a request message to an access gateway;
(2) the access gateway carries out authorization authentication on the service request and sends a request message to a data exchange control system;
(3) the data exchange control system analyzes the request message to obtain specific request parameters;
(4) the data exchange control system accesses the corresponding public security service party resource according to the request parameter;
(5) the public security service resource returns a response result;
(6) the data exchange control system analyzes the response result, and packages the response result into a response message and sends the response message to the access gateway;
(7) and the access gateway feeds back response message information to the VPN private network requester.
As a further aspect of the present invention, the second transmission method specifically includes the following steps:
(1) a VPN private network requester calls a requester interface to submit a request message to an access gateway;
(2) the access gateway performs authorization authentication on the service request, and after the authentication is passed, the access gateway sends a request message to the data exchange control system;
(3) the data exchange control system analyzes the request message to obtain specific request parameters;
(4) the data exchange control system forwards the request parameters to the access gateway;
(5) the access gateway accesses VPN private network service resources;
(6) the VPN private network service resource returns a response result;
(7) the access gateway sends a response result to the data exchange control system;
(8) the data exchange control system analyzes the response result, packages the response result into a response message and sends the response message to the access gateway;
(9) the access gateway feeds back response message information to the VPN private network requester, and the feedback response message information can be directly returned or pushed according to the request interface address of the registration information of the requester.
As a further scheme of the present invention, the third transmission mode specifically comprises the following steps:
(1) a public security network requester calls a requester interface to submit a request message to a data exchange control system;
(2) the data exchange control system carries out authorization authentication on the service request, and after the authentication is passed, the data exchange control system carries out analysis processing on the request message to obtain specific request parameters;
(3) the data exchange control system forwards the request parameters to the access gateway;
(4) the access gateway analyzes the request parameters;
(5) the access gateway accesses VPN private network service resources;
(6) the VPN private network service resource returns a response result;
(7) the access gateway sends a response result to the data exchange control system;
(8) the data exchange control system analyzes and processes the response result, encapsulates the response result into a response message, and feeds back response message information to the public security network request party, wherein the feedback response message information can be directly returned or pushed according to the request interface address of the registration information of the request party.
As a further scheme of the present invention, the fourth transmission mode specifically comprises the following steps:
(1) a VPN private network request direction submits a request file meeting the standard requirement to an access gateway;
(2) the access gateway carries out authorization and authentication on the file request and sends a request message to a data exchange control system;
(3) the data exchange control system further verifies and processes the request file and forwards the request file to the access gateway;
(4) the access gateway accesses the VPN private network server resource and sends a request file to the server;
(5) the VPN private network service resource returns a response file;
(6) the access gateway sends a response file to the data exchange control system;
(7) the data exchange control system processes the response file and sends the response data file to the access gateway;
(8) and the access gateway feeds back a response data file to the VPN private network requester. And pushing the feedback response data file according to the request interface address of the registration information of the requester.
As a further scheme of the present invention, a fifth transmission mode specifically includes the following steps:
(1) the public security network request side submits a request file meeting the standard requirement to a data exchange control system;
(2) the data exchange control system carries out authorization authentication and format specification verification on the service request;
(3) after the verification is passed, the data exchange control system forwards the request file to the access gateway;
(4) the access gateway accesses the VPN private network server resource and sends a request file to the server;
(5) the VPN private network service resource returns a response file;
(6) the access gateway sends a response file to the data exchange control system;
(7) and the data exchange control system analyzes the response result, feeds back a response data file to the public security network requester, and pushes the feedback response data file according to the request interface address of the registration information of the requester.
Compared with the prior art, the invention has the beneficial effects that:
the method has the advantages that the method is suitable for network gate equipment of a plurality of manufacturers, simultaneously encapsulates the data synchronization function, solves the problem that only file synchronization and database synchronization can be carried out, provides a real-time http interface agent for the client, and can directly initiate a request through http.
Drawings
FIG. 1 is a flow chart of a data transformation scenario according to the present invention.
FIG. 2 is a flowchart illustrating a second scenario of data conversion according to the present invention.
FIG. 3 is a flow chart of a data conversion scenario according to the present invention.
FIG. 4 is a fourth flowchart illustrating a data conversion scenario according to the present invention.
Fig. 5 is a flow chart of a fifth scenario for data conversion according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, in an embodiment of the present invention, an instant protocol conversion system for cross-network data exchange includes a VPN private network requester, a VPN private network server, an access gateway, a cross-domain security isolation device, a data exchange control system, a public security network server, and a public security network requester, where the VPN private network requester and the access gateway perform data transmission therebetween, the access gateway performs data transmission with both the VPN private network server and the data exchange control system, the cross-domain security isolation device is disposed between the access gateway and the data exchange control system, and the data exchange control system performs data exchange with the public security network server and the public security network requester;
the data conversion modes among the VPN private network requester, the VPN private network server, the access gateway, the data exchange control system, the public security network server and the public security network requester are five transmission modes;
the first transmission mode is as follows: the VPN private network requester initiates a public security network shared resource request process, analyzes and converts VPN private network request data, generates a request file meeting a shared data standard, transmits the request file to the data exchange control system, receives the file and analyzes the file, and the data exchange control system accesses public security network shared resources and returns a result, as shown in fig. 1.
The second transmission mode is as follows: the VPN private network requester initiates a request process for another VPN private network server resource, the access gateway analyzes and converts the VPN private network request data to generate a request file meeting the shared data standard, transmits the request file to the data exchange control system, receives the file and analyzes the file, the data exchange control system accesses the VPN private network server resource through the access gateway and returns a result to the VPN private network requester, as shown in fig. 2.
The third transmission mode is as follows: the public security network requester initiates a resource request process of the VPN private network service provider, analyzes and converts the request data to generate a request file meeting the shared data standard, transmits the request file to the access gateway, and the access gateway receives and analyzes the file, accesses the VPN private network service provider and returns a result, as shown in fig. 3.
The fourth transmission mode is as follows: the VPN private network requester initiates a public security network data exchange process, performs format specification verification on the request file submitted by the VPN private network, generates a request file meeting specification requirements, transmits the request file to the data exchange control system to receive the file, and the data exchange control system submits the request file to the public security network server and returns a requested response file, as shown in fig. 4.
The fifth transmission mode is as follows: the VPN private network requester initiates a data exchange service process for another VPN private network service provider resource, performs format specification verification on a request file submitted by the VPN private network, generates a request file meeting specification requirements, transmits the request file to the data exchange control system for receiving, and the data exchange control system sends the request file to the VPN private network service provider resource through the access gateway and returns a response data file to the VPN private network requester, as shown in fig. 5.
The first transmission mode comprises the following specific steps:
(1) a VPN private network requester calls a requester interface to submit a request message to an access gateway;
(2) the access gateway carries out authorization authentication on the service request and sends a request message to a data exchange control system;
(3) the data exchange control system analyzes the request message to obtain specific request parameters;
(4) the data exchange control system accesses the corresponding public security service party resource according to the request parameter;
(5) the public security service resource returns a response result;
(6) the data exchange control system analyzes the response result, and packages the response result into a response message and sends the response message to the access gateway;
(7) and the access gateway feeds back response message information to the VPN private network requester.
The second transmission mode comprises the following specific steps:
(1) a VPN private network requester calls a requester interface to submit a request message to an access gateway;
(2) the access gateway performs authorization authentication on the service request, and after the authentication is passed, the access gateway sends a request message to the data exchange control system;
(3) the data exchange control system analyzes the request message to obtain specific request parameters;
(4) the data exchange control system forwards the request parameters to the access gateway;
(5) the access gateway accesses VPN private network service resources;
(6) the VPN private network service resource returns a response result;
(7) the access gateway sends a response result to the data exchange control system;
(8) the data exchange control system analyzes the response result, packages the response result into a response message and sends the response message to the access gateway;
(9) the access gateway feeds back response message information to the VPN private network requester, and the feedback response message information can be directly returned or pushed according to the request interface address of the registration information of the requester.
The third transmission mode comprises the following specific steps:
(1) a public security network requester calls a requester interface to submit a request message to a data exchange control system;
(2) the data exchange control system carries out authorization authentication on the service request, and after the authentication is passed, the data exchange control system carries out analysis processing on the request message to obtain specific request parameters;
(3) the data exchange control system forwards the request parameters to the access gateway;
(4) the access gateway analyzes the request parameters;
(5) the access gateway accesses VPN private network service resources;
(6) the VPN private network service resource returns a response result;
(7) the access gateway sends a response result to the data exchange control system;
(8) the data exchange control system analyzes and processes the response result, encapsulates the response result into a response message, and feeds back response message information to the public security network request party, wherein the feedback response message information can be directly returned or pushed according to the request interface address of the registration information of the request party.
The fourth transmission mode comprises the following specific steps:
(1) a VPN private network request direction submits a request file meeting the standard requirement to an access gateway;
(2) the access gateway carries out authorization and authentication on the file request and sends a request message to a data exchange control system;
(3) the data exchange control system further verifies and processes the request file and forwards the request file to the access gateway;
(4) the access gateway accesses the VPN private network server resource and sends a request file to the server;
(5) the VPN private network service resource returns a response file;
(6) the access gateway sends a response file to the data exchange control system;
(7) the data exchange control system processes the response file and sends the response data file to the access gateway;
(8) and the access gateway feeds back a response data file to the VPN private network requester. And pushing the feedback response data file according to the request interface address of the registration information of the requester.
The fifth transmission mode comprises the following specific steps:
(1) the public security network request side submits a request file meeting the standard requirement to a data exchange control system;
(2) the data exchange control system carries out authorization authentication and format specification verification on the service request;
(3) after the verification is passed, the data exchange control system forwards the request file to the access gateway;
(4) the access gateway accesses the VPN private network server resource and sends a request file to the server;
(5) the VPN private network service resource returns a response file;
(6) the access gateway sends a response file to the data exchange control system;
(7) and the data exchange control system analyzes the response result, feeds back a response data file to the public security network requester, and pushes the feedback response data file according to the request interface address of the registration information of the requester.
The instant protocol conversion system related to cross-network data exchange shields network complexity caused by network isolation equipment such as a network gate or a boundary and the like, encapsulates a file synchronization or database synchronization function, does not need to realize a data synchronization function when being butted with other access systems, and only needs to be called according to interface service; the method is adaptive and has performance tuning with the equipment of the gatekeeper of multiple manufacturers, including code optimization of an application program, so that the optimal performance of gatekeeper exchange can be achieved;
meanwhile, in data transmission, authentication, authorization and encryption technologies can be combined, the functions of accessing a mainstream PKI certificate, an authentication protocol and authorization management are supported, two different platforms can be authenticated through an interface, resource access can be authorized through resources, and field-level authorization control can also be realized;
a data exchange kernel built by an ESB service bus technology with built-in autonomous intellectual property rights provides safe, stable and robust information transfer, information routing, information conversion and other exchange services by connecting various data sources, information sources and application sources through adaptive services, completes the core functions of service buses such as dynamic link, intelligent routing, information conversion and the like, and meets the requirements of reliable cross-domain exchange performance of thousands of concurrent per second and second-level response in daily life.
The method has the advantages that the method is suitable for network gate equipment of a plurality of manufacturers, simultaneously encapsulates the data synchronization function, solves the problem that only file synchronization and database synchronization can be carried out, provides a real-time http interface agent for the client, and can directly initiate a request through http.
Various terms are used in the present invention, which are specifically explained as follows:
VPN/VPN private network: the Network is called a Virtual Private Network, and the Chinese name is a Virtual Private Network, which is a mode of establishing a Private Network on a public Network to carry out encrypted communication. The VPN gateway realizes remote access through encryption of the data packet and conversion of a data packet target address. VPNs have a variety of classification schemes, mainly by protocol. A VPN may be implemented in a number of ways, including server, hardware, software, etc.
VNP requester: the application program is a party initiating a request in a data exchange request process, and a service request party in a private VPN network (called a private VPN network request party for short) represents an application program which needs to obtain a service through an access gateway.
The VNP server side: the service program is a party responding to a request of a requester for providing service in a data exchange request process, and a service provider (VPN private network service party for short) in a VPN private network represents a service program which is registered and hung on a data exchange control system in a cross-domain security exchange platform and is used for providing service for the requester in an authorized range.
Public security network requesting party: a service requester in a public security information network (referred to as a public security network requester) represents an application that needs to obtain services through a data exchange control system.
Public security network service side: the service provider (public security network service provider for short) in the public security information network represents a service program which is registered and hung on a data exchange control system in a cross-domain security exchange platform and used for providing service for a requester in an authorized range.
An access gateway: the system is a system program which is deployed in a VPN private network access area of a cross-domain security exchange platform, realizes the security access of a public security information network and each VPN private network, and is composed of functions such as a service interface, a service center, access management, security management and the like.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (1)
1. An instant protocol conversion system related to cross-network data exchange is characterized by comprising a VPN private network request party, a VPN private network service party, an access gateway, cross-domain safety isolation equipment, a data exchange control system, a public security network service party and a public security network request party, wherein the VPN private network request party and the access gateway transmit data, the access gateway transmits data with the VPN private network service party and the data exchange control system, the cross-domain safety isolation equipment is arranged between the access gateway and the data exchange control system, and the data exchange control system exchanges data with the public security network service party and the public security network request party;
the data conversion modes among the VPN private network requester, the VPN private network server, the access gateway, the data exchange control system, the public security network server and the public security network requester are five transmission modes;
the first transmission mode comprises the following specific steps:
(1) a VPN private network requester calls a requester interface to submit a request message to an access gateway;
(2) the access gateway carries out authorization authentication on the service request and sends a request message to a data exchange control system;
(3) the data exchange control system analyzes the request message to obtain specific request parameters;
(4) the data exchange control system accesses the corresponding public security service party resource according to the request parameter;
(5) the public security service resource returns a response result;
(6) the data exchange control system analyzes the response result, and packages the response result into a response message and sends the response message to the access gateway;
(7) the access gateway feeds back response message information to the VPN private network requester;
the second transmission mode comprises the following specific steps:
(1) a VPN private network requester calls a requester interface to submit a request message to an access gateway;
(2) the access gateway performs authorization authentication on the service request, and after the authentication is passed, the access gateway sends a request message to the data exchange control system;
(3) the data exchange control system analyzes the request message to obtain specific request parameters;
(4) the data exchange control system forwards the request parameters to the access gateway;
(5) the access gateway accesses VPN private network service resources;
(6) the VPN private network service resource returns a response result;
(7) the access gateway sends a response result to the data exchange control system;
(8) the data exchange control system analyzes the response result, packages the response result into a response message and sends the response message to the access gateway;
(9) the access gateway feeds back response message information to the VPN private network requester, and the feedback response message information can be directly returned or pushed according to the request interface address of the registration information of the requester;
the third transmission mode comprises the following specific steps:
(1) a public security network requester calls a requester interface to submit a request message to a data exchange control system;
(2) the data exchange control system carries out authorization authentication on the service request, and after the authentication is passed, the data exchange control system carries out analysis processing on the request message to obtain specific request parameters;
(3) the data exchange control system forwards the request parameters to the access gateway;
(4) the access gateway analyzes the request parameters;
(5) the access gateway accesses VPN private network service resources;
(6) the VPN private network service resource returns a response result;
(7) the access gateway sends a response result to the data exchange control system;
(8) the data exchange control system analyzes and processes the response result, packages the response result into a response message, and feeds back response message information to the public security network request party, wherein the feedback response message information can be directly returned or pushed according to the request interface address of the registration information of the request party;
the fourth transmission mode comprises the following specific steps:
(1) a VPN private network request direction submits a request file meeting the standard requirement to an access gateway;
(2) the access gateway carries out authorization and authentication on the file request and sends a request message to a data exchange control system;
(3) the data exchange control system further verifies and processes the request file and forwards the request file to the access gateway;
(4) the access gateway accesses the VPN private network server resource and sends a request file to the server;
(5) the VPN private network service resource returns a response file;
(6) the access gateway sends a response file to the data exchange control system;
(7) the data exchange control system processes the response file and sends the response data file to the access gateway;
(8) the access gateway feeds back a response data file to the VPN private network requester, and the feedback response data file is pushed according to the request interface address of the registration information of the requester;
the fifth transmission mode comprises the following specific steps:
(1) the public security network request side submits a request file meeting the standard requirement to a data exchange control system;
(2) the data exchange control system carries out authorization authentication and format specification verification on the service request;
(3) after the verification is passed, the data exchange control system forwards the request file to the access gateway;
(4) the access gateway accesses the VPN private network server resource and sends a request file to the server;
(5) the VPN private network service resource returns a response file;
(6) the access gateway sends a response file to the data exchange control system;
(7) and the data exchange control system analyzes the response result, feeds back a response data file to the public security network requester, and pushes the feedback response data file according to the request interface address of the registration information of the requester.
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| CN110855634A (en) * | 2019-10-24 | 2020-02-28 | 北京电信易通信息技术股份有限公司 | Cross-network switching service system and method based on secure network |
| CN110995698A (en) * | 2019-11-29 | 2020-04-10 | 上海依图网络科技有限公司 | Cross-network request transmission method and device |
| CN110661891B (en) * | 2019-12-02 | 2020-04-14 | 武汉中科通达高新技术股份有限公司 | Cross-network file instant transmission method and system based on unidirectional network |
| CN111447256B (en) * | 2020-03-05 | 2022-07-01 | 中国司法大数据研究院有限公司 | Cross-domain micro-service registration and release method and system based on file exchange |
| CN112235193B (en) * | 2020-10-12 | 2022-08-30 | 南威软件股份有限公司 | Data transmission method, device, equipment and medium based on cross-network multi-level routing |
| CN112511613B (en) * | 2020-11-19 | 2022-07-12 | 深圳市风云实业有限公司 | Cross-domain transmission system and method based on content analysis |
| CN112532603B (en) * | 2020-11-20 | 2023-04-07 | 中国电子科技集团公司第十五研究所 | Cross-domain file exchange leading-in device and method based on exchange authorization file |
| CN112714182B (en) * | 2020-12-28 | 2024-02-23 | 广州金越软件技术有限公司 | Cross-network data exchange technology and method based on distributed message architecture |
| CN114221785B (en) * | 2021-11-17 | 2023-11-24 | 佛山市宏图数据有限公司 | Non-inductive boundary data exchange method |
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