WO2018049759A1

WO2018049759A1 - File transmission method and system

Info

Publication number: WO2018049759A1
Application number: PCT/CN2016/113189
Authority: WO
Inventors: 李春
Original assignee: 广州视睿电子科技有限公司
Priority date: 2016-09-13
Filing date: 2016-12-29
Publication date: 2018-03-22
Also published as: CN106412028A

Abstract

The present invention relates to a file transmission method and system. According to the method, a first wireless local area network that uses a first terminal as a wireless hotspot is generated; a first two-dimensional barcode storing the hotspot name and an access password of the first wireless local area network is generated and displayed; a second terminal scans the first two-dimensional barcode to acquire the hotspot name and the access password of the first wireless local area network, and accesses the first wireless local area network by using the hotspot name and the access password to connect to the first terminal; the second terminal acquires a file selected by a user and sends the file to the first terminal. According to the method, a wireless local area network is established by using a first terminal as a wireless hotspot, and a second terminal is able to transmit a file stored in the second terminal to the first terminal after accessing the wireless local area network. Even in the absence of an external network, file transmission can still be achieved without being limited by an external network, thereby bringing convenience to operations of a user.

Description

File transfer method and system

Technical field

The present invention relates to the field of communications technologies, and in particular, to a file transmission method and system.

Background technique

The interactive smart tablet refers to an integrated device that uses touch technology to control the content displayed on the tablet and realize human-computer interaction. In applications such as education and meetings, the required interactive smart tablets are large in size and are usually installed in a fixed location. Moreover, in application scenarios such as education and meetings, it is often necessary to reuse the same file in different classrooms or conference rooms.

The way in which the interactive smart tablet implements file transfer is to store the file in the network server, and access the network server on the interactive smart tablet to download the file to be used from the network server. However, this implementation is based on the premise that the external network is available. When the network is unavailable, the user cannot successfully download the required files from the network server, which brings inconvenience to the user's operation.

Summary of the invention

Based on this, it is necessary to provide an easy-to-use file transfer method.

A file transfer method includes:

The first terminal acquires a file download instruction;

Determining, by the first terminal, the first wireless local area network that uses the first terminal as a wireless hotspot according to the file downloading instruction;

Generating, by the first terminal, a first two-dimensional code, where the first two-dimensional code stores a hotspot name and an access password of the first wireless local area network;

The second terminal scans the first two-dimensional code and parses the first two-dimensional code to obtain a hotspot name and an access password of the first wireless local area network;

Sending, by the second terminal, a connection request to the first terminal, where the connection request includes the obtained hotspot name and an access password of the first wireless local area network;

After the hotspot name and the access password sent by the first terminal to the second terminal are verified, Establishing a connection with the second terminal;

The second terminal displays a local storage file and obtains a file selected by the user;

The second terminal sends the file selected by the user to the first terminal.

A file transmission system includes a first terminal and a second terminal;

The first terminal includes: an instruction acquisition module, a local area network creation module, a two-dimensional code generation module, and a connection module; the second terminal includes: a scanning module, a sending module, and a selection module;

The instruction acquisition module is configured to acquire a file download instruction;

The local area network creating module is configured to create, according to the file downloading instruction, a first wireless local area network that uses the first terminal as a wireless hotspot;

The two-dimensional code generating module is configured to generate and display a first two-dimensional code, where the first two-dimensional code stores a hotspot name and an access password of the first wireless local area network;

The scanning module is configured to scan the first two-dimensional code and parse the first two-dimensional code to obtain a hotspot name and an access password of the first wireless local area network;

The sending module is configured to send a connection request to the first terminal, where the connection request includes a hotspot name and an access password of the first wireless local area network acquired by the scanning module;

The connection module is configured to establish a connection with the second terminal after the hotspot name and the access password sent by the second terminal are verified;

The selecting module is configured to display a local storage file and obtain a file selected by the user;

The sending module is further configured to send a file selected by the user to the first terminal.

In the above file transmission method, a first two-dimensional code storing a hotspot name and an access password of a first wireless local area network is generated and displayed by creating a first wireless local area network in which the first terminal is a wireless hotspot, and the second terminal passes the scanning A two-dimensional code acquires a hotspot name and an access password of the first wireless local area network, and accesses the first wireless local area network to connect with the first terminal by using the hotspot name and the access password, and the second terminal acquires the file selected by the user and the file Send to the first terminal. Through the method, the wireless local area network is established by using the wireless hotspot of the first terminal, and the second terminal accesses the wireless local area network to transmit the file stored in the second terminal to the first terminal. Even in the absence of an external network, the file can be transferred, free from the limitations of the external network, and facilitate the operation of the user.

DRAWINGS

1 is a flow chart of a file transfer method of an embodiment;

2 is a flow chart of a file transfer method of another embodiment;

3 is a schematic structural diagram of a file transmission system of an embodiment;

4 is a schematic structural diagram of a file transmission system of another embodiment.

detailed description

The terms "first" and "second" and the like in the present invention may be described herein as various elements, but these elements are not limited by these terms. The purpose of these terms is only to distinguish one element from another. For example, a first terminal may be referred to as a second terminal without departing from the scope of the present invention. Similarly, the second terminal may be referred to as a first terminal. The first terminal and the second terminal are both terminal devices, but they are not the same terminal device.

FIG. 1 is a timing diagram of a file transfer method implemented by a first terminal and a second terminal. The method includes the following steps:

S202: The first terminal acquires a file download instruction.

In a specific implementation, the user runs a file transfer application on the first terminal, and the application is provided with a download-related interactive control, and the user triggers the download-related interactive control to generate a file download instruction on the first terminal.

S204: The first terminal creates a first wireless local area network that uses the first terminal as a wireless hotspot according to the file download instruction.

When the user is triggered to trigger the download control on the first terminal, the first terminal turns on the wireless hotspot function, creates a first local area network with the first terminal device as a wireless hotspot, and generates a hotspot name and an access password of the first wireless local area network. The access password is used to verify whether other devices are allowed to access the first wireless local area network to connect with the first terminal. The access password is automatically generated randomly when the first wireless LAN is created. It should be understood that the first terminal is a terminal device having a wireless network card, such as a desktop computer, an interactive smart tablet, or a mobile terminal.

S206: The first terminal generates a first two-dimensional code and displays that the first two-dimensional code stores a hotspot name and an access password of the first wireless local area network.

A two-dimensional code is a black-and-white graphic that is distributed in a plane (two-dimensional direction) by a certain geometric pattern in a certain pattern, and can store information in both horizontal and vertical directions. Specifically, the first two-dimensional code stores a hotspot name and an access password of the first wireless local area network. After the first terminal generates the first two-dimensional code, the first two-dimensional code is displayed on the display screen.

S208: The second terminal scans the first two-dimensional code and parses the first two-dimensional code to obtain a hotspot name and an access password of the first wireless local area network.

In a specific implementation, the second terminal runs a file transfer application, and by triggering an interactive control of the application, such as “sweeping” on the second terminal, the second terminal camera is invoked to scan the first terminal. The first two-dimensional code on the first two-dimensional code. The second terminal acquires the hotspot name and the access password of the first wireless local area network by parsing the first two-dimensional code. It can be understood that the second terminal is a terminal having a photographing function.

S210: The second terminal sends a connection request to the first terminal, where the connection request includes the obtained hotspot name and access password of the first wireless local area network.

It can be understood that the second terminal is a terminal device with a wireless network card, such as a desktop computer, an interactive smart tablet or a mobile terminal. The second terminal may search for the wireless hotspot of the first wireless local area network by using the wireless network card, and send a connection request to the wireless hotspot, where the connection request includes the hotspot name and the access password of the first wireless local area network obtained by parsing the first two-dimensional code. .

S212: Establish a connection with the second terminal after the first terminal verifies the hotspot name and the access password sent by the second terminal.

After obtaining the connection request sent by the second terminal, the first terminal verifies the access password in the connection request and the stored access password of the first wireless local area network, and verifies whether the two are consistent. After the verification is passed, the first A terminal is connected to the second terminal, and the first terminal and the second terminal are connected by using the first wireless local area network.

S214: The second terminal displays the local storage file and acquires the file selected by the user.

After establishing the connection between the first terminal and the second terminal, the local storage file is displayed on the display screen of the second terminal, and the file selected by the user is obtained. That is, after detecting that the connection with the first terminal is successfully established, the second terminal automatically displays the local storage file on the display screen for the user to select and acquire the file selected by the user. The files in this embodiment include pictures, videos, audio, and documents. Or an application installation package.

S216: The second terminal sends the file selected by the user to the first terminal.

The second terminal sends the file selected by the user to the first terminal by using the first wireless local area network, and the first terminal receives the file.

In another embodiment, the third terminal is further configured to transmit the file of the third terminal to the first terminal by using the file transmission method in this embodiment. Specifically, as shown in FIG. 2, before step S202, the method further includes:

S102: The third terminal acquires a transmission instruction of the file to be transmitted.

In a specific implementation manner, the user runs the file transfer application on the third terminal, and the user selects a file to be transmitted on the operation interface, triggers a sharing operation, and generates a transfer instruction.

S103: The third terminal creates a second wireless local area network that uses the third terminal as a wireless hotspot according to the transmission instruction.

When the transmission instruction triggered by the user on the third terminal is obtained, the third terminal turns on the wireless hotspot function, creates a second local area network with the third terminal device as a wireless hotspot, and generates a hotspot name and an access password of the second wireless local area network. . The access password is used to verify whether other devices are allowed to access the second wireless local area network to connect with the third terminal. The access password is automatically generated randomly when the second wireless LAN is created. It should be understood that the third terminal is a terminal device having a wireless network card, such as a desktop computer, an interactive smart tablet, or a mobile terminal.

S104: The third terminal generates a second two-dimensional code and displays that the second two-dimensional code stores a hotspot name of the second wireless local area network, an access password, and a storage address of the file to be transmitted.

A two-dimensional code is a black-and-white graphic that is distributed in a plane (two-dimensional direction) by a certain geometric pattern in a certain pattern, and can store information in both horizontal and vertical directions. Specifically, the second two-dimensional code stores a hotspot name of the second wireless local area network, an access password, and a storage address of the file to be transmitted. The storage address is the storage path of the file to be transmitted on the third terminal. After the third terminal generates the second two-dimensional code, the second two-dimensional code is displayed on the display screen.

S105: The second terminal scans the second two-dimensional code and parses the second two-dimensional code to obtain a hotspot name and an access password of the second wireless local area network.

In a specific implementation, the second terminal runs a file transfer application, and by triggering an interactive control of the application on the second terminal, for example, “sweeping”, calling the camera of the second terminal to scan the third terminal. The second two-dimensional code to obtain the second two-dimensional code. The second terminal acquires the hotspot name, the access password, and the storage address of the file to be transmitted of the second wireless local area network by parsing the second two-dimensional code. It can be understood that the second terminal is a terminal having a photographing function.

S106: The second terminal sends a connection request to the third terminal, where the connection request includes the obtained hot spot name of the second wireless local area network, an access password, and a storage address of the file to be transmitted.

The second terminal may search for the wireless hotspot of the third wireless local area network by using the wireless network card, and send a connection request to the wireless hotspot, where the connection request includes the hotspot name and the access password of the second wireless local area network obtained by parsing the second two-dimensional code. And the storage address of the file to be transferred.

S107: After the third terminal verifies the hotspot name and the access password sent by the second terminal, establish a connection with the second terminal.

After obtaining the connection request sent by the second terminal, the third terminal verifies the access password in the connection request and the stored access password of the second wireless local area network, and verifies whether the two are consistent. After the verification is passed, the third terminal is established. The third terminal is connected to the second terminal, and the third terminal and the second terminal are connected through the second wireless local area network.

S108: The second terminal downloads the file to be transmitted from the third terminal according to the storage address and stores the file.

After the connection between the third terminal and the second terminal is established, the second terminal downloads the file to be transmitted from the third terminal to the local device according to the obtained storage address, and stores the file. The files in this embodiment include pictures, videos, audio, documents or application installation packages, and the like.

In this embodiment, the user can manually select the slave by operating the application of the second terminal. The corresponding terminal downloads the file or sends the file to the corresponding terminal. The second terminal can also automatically perform an operation of downloading or transmitting a file by identifying whether the scanned two-dimensional code includes a storage address.

With the file transmission method of this embodiment, the file can be transmitted from the third terminal to the first terminal by using the second terminal. In a preferred embodiment, the second terminal is a mobile terminal, such as a mobile phone. The mobile phone scans the two-dimensional code generated by the third terminal, connects to the wireless hotspot of the third terminal, and downloads the file from the third terminal to the local. The mobile phone scans the generated two-dimensional code of the first terminal, and connects to the wireless hotspot of the first terminal, and the user sends the file to the first terminal by selecting a file to be transmitted on the mobile phone.

In a specific implementation manner, the third terminal and the first terminal are interactive smart tablets. Because the installation location of the interactive smart tablet is relatively fixed, by using a mobile terminal such as a mobile phone, the wireless hotspot of the interactive smart tablet can be used without connecting to the network. The transfer of files from one interactive smart tablet to another intelligent interactive tablet brings convenience to the user's operation.

In another embodiment, step S202 includes: the first terminal encrypts by using a preset key to generate a first two-dimensional code and displays the same.

Correspondingly, step S208 includes: the second terminal scans to obtain the first two-dimensional code, and decrypts the first two-dimensional code by using a preset key to obtain a hotspot name and an access password of the first wireless local area network.

Step S104 includes: the third terminal performs encryption by using a preset key to generate a second two-dimensional code and displays the same.

Correspondingly, step S105 includes: the second terminal scans to acquire the second two-dimensional code, and decrypts the second two-dimensional code by using the preset key to obtain the hotspot name, the access password, and the storage of the file to be transmitted of the second wireless local area network. address.

In the conference scenario application of the interactive smart tablet, the files mostly involve company secrets, and the file transfer method of the present invention is adopted. On the one hand, it is not necessary to upload the files to the network server, and the files are prevented from being intercepted during the network transmission process. The preset key is used to generate the two-dimensional code and the two-dimensional code is parsed, so as to prevent the non-legitimate users from cracking the information contained in the two-dimensional code, and ensuring the security and privacy of the file transmission, thereby ensuring the security of the file.

In a further embodiment, the step S204 includes: the first terminal generates a first two-dimensional code according to the file downloading instruction, and displays that the first two-dimensional code stores the hotspot name and the access secret of the first wireless local area network. Code and file download instructions.

Correspondingly, step S208 includes: the second terminal scans the first two-dimensional code and parses the first two-dimensional code to obtain a hotspot name, an access password, and a file download instruction of the first wireless local area network.

Step S214 includes: the second terminal displays the local storage file according to the file download instruction, and acquires the file selected by the user.

Step S104 includes: generating, by the third terminal, a second two-dimensional code according to the transmission instruction, where the second two-dimensional code stores a hotspot name of the second wireless local area network, an access password, a storage address of the file to be transmitted, and a transmission instruction.

Step S105 includes: the second terminal scans the second two-dimensional code and parses the second two-dimensional code to obtain a hotspot name, an access password, a storage address of the file to be transmitted, and a transmission instruction of the second wireless local area network.

Step S108 includes: the second terminal downloads the file to be transmitted from the third terminal according to the transmission instruction and the storage address and stores the file.

In this embodiment, the second terminal automatically downloads the file from the corresponding terminal or displays the locally stored file by identifying the transmission instruction or the file download instruction in the two-dimensional code, without manual operation confirmation, and brings convenience to the operation of the user.

a file transmission system, as shown in Figure 3, comprising a first terminal 30 and a second terminal 50;

The first terminal 30 includes an instruction acquisition module 301, a local area network creation module 302, a two-dimensional code generation module 303, and a connection module 304. The second terminal 50 includes a scan module 501, a sending module 502, and a selection module 503.

The instruction obtaining module 301 is configured to obtain a file download instruction.

The local area network creating module 302 is configured to create a first wireless local area network with the first terminal as a wireless hotspot according to the file downloading instruction.

The two-dimensional code generating module 303 is configured to generate and display a first two-dimensional code, where the first two-dimensional code stores a hotspot name and an access password of the first wireless local area network.

The scanning module 501 is configured to scan the first two-dimensional code and parse the first two-dimensional code to obtain a hotspot name and an access password of the first wireless local area network.

The sending module 502 is configured to send a connection request to the first terminal, where the connection request includes the scanning module Get the hotspot name and access password of the first WLAN.

The connection module 304 is configured to establish a connection with the second terminal after the hotspot name and the access password sent by the second terminal are verified.

The selecting module 503 is configured to display a local storage file and obtain a file selected by the user.

The sending module 502 is further configured to send the file selected by the user to the first terminal.

The above file transmission system generates and displays a first two-dimensional code storing a hotspot name and an access password of the first wireless local area network by creating a first wireless local area network in which the first terminal is a wireless hotspot, and the second terminal passes the scanning A two-dimensional code acquires a hotspot name and an access password of the first wireless local area network, and accesses the first wireless local area network to connect with the first terminal by using the hotspot name and the access password, and the second terminal acquires the file selected by the user and the file Send to the first terminal. Through the system, a wireless local area network is established by using the wireless hotspot of the first terminal, and the second terminal accesses the wireless local area network to transmit the file stored in the second terminal to the first terminal. Even in the absence of an external network, the file can be transferred, free from the limitations of the external network, and facilitate the operation of the user.

In another embodiment, as shown in FIG. 4, the file transfer system further includes a third terminal 70. The third terminal 70 includes: a transfer instruction acquisition module 701, a creation module 702, a two-dimensional code processing module 703, and a connection processing module 704. The second terminal also includes a download module 504.

The transmission instruction acquisition module 701 is configured to acquire a transmission instruction of the file to be transmitted.

The creating module 702 is configured to create, according to the transmission instruction, a second wireless local area network that uses the third terminal as a wireless hotspot.

The two-dimensional code processing module 703 is configured to generate and display a second two-dimensional code, where the second two-dimensional code stores a hotspot name of the second wireless local area network, an access password, and a storage address of the file to be transmitted.

The scanning module 501 is configured to scan the second two-dimensional code and parse the second two-dimensional code to obtain a hotspot name, an access password, and a storage address of the file to be transmitted of the second wireless local area network.

The sending module 502 is configured to send a connection request to the third terminal, where the connection request includes a hotspot name and an access password of the second wireless local area network acquired by the scanning module.

The connection processing module 704 is configured to establish a connection with the second terminal after the hotspot name and the access password sent by the second terminal are verified.

The downloading module 504 is configured to download and store the file to be transmitted from the third terminal according to the storage address.

With the system for file transfer of this embodiment, the file can be transferred from the third terminal to the first terminal by means of the second terminal. In a preferred embodiment, the second terminal is a mobile terminal, such as a mobile phone. The mobile phone scans the two-dimensional code generated by the third terminal, connects to the wireless hotspot of the third terminal, and downloads the file from the third terminal to the local. The mobile phone scans the generated two-dimensional code of the first terminal, and connects to the wireless hotspot of the first terminal, and the user sends the file to the first terminal by selecting a file to be transmitted on the mobile phone.

In a specific implementation manner, the third terminal and the first terminal are interactive smart tablets, and the second terminal is a mobile terminal. Because the installation location of the interactive smart tablet is relatively fixed, the wireless device using the interactive smart tablet is utilized by using a mobile terminal such as a mobile phone. The hotspot can transfer files from one interactive smart tablet to another smart interactive tablet without connecting to the network, which brings convenience to the user's operation.

In another embodiment, the two-dimensional code generating module 303 is configured to perform encryption by using a preset key to generate a first two-dimensional code and display the same.

The scanning module 501 is configured to scan and obtain the first two-dimensional code, and decrypt the first two-dimensional code by using a preset key to obtain a hotspot name and an access password of the first wireless local area network.

The two-dimensional code processing module 703 is configured to perform encryption by using a preset key to generate a second two-dimensional code and display the same.

The scanning module 501 is configured to scan and acquire the second two-dimensional code, and decrypt the second two-dimensional code by using a preset key to obtain a hotspot name, an access password, and a storage address of the file to be transmitted of the second wireless local area network.

In another embodiment, the two-dimensional code generating module 303 is configured to generate and display the first two-dimensional code according to the file downloading instruction, where the first two-dimensional code stores the hotspot name, access password, and file download of the first wireless local area network. instruction.

The scanning module 501 is configured to scan the first two-dimensional code and parse the first two-dimensional code to obtain the first wireless station Hotspot name, access password, and file download command for the domain network.

The selecting module 503 is configured to display a local storage file according to the file download instruction, and acquire a file selected by the user.

The two-dimensional code processing module 703 is configured to generate and display a second two-dimensional code according to the transmission instruction, where the second two-dimensional code stores a hotspot name of the second wireless local area network, an access password, a storage address of the file to be transmitted, and a transmission instruction.

The scanning module 501 is configured to scan the second two-dimensional code and parse the second two-dimensional code to obtain a hotspot name, an access password, a storage address of the file to be transmitted, and a transmission instruction of the second wireless local area network.

The downloading module 504 is configured to download and store the file to be transmitted from the third terminal according to the transmission instruction and the storage address.

The technical features of the above embodiments may be arbitrarily combined. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, It is considered to be the range described in this specification.

The above embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

A file transfer method, comprising:

The first terminal acquires a file download instruction;

Determining, by the first terminal, the first wireless local area network that uses the first terminal as a wireless hotspot according to the file downloading instruction;

Generating, by the first terminal, a first two-dimensional code, where the first two-dimensional code stores a hotspot name and an access password of the first wireless local area network;

The second terminal scans the first two-dimensional code and parses the first two-dimensional code to obtain a hotspot name and an access password of the first wireless local area network;

Sending, by the second terminal, a connection request to the first terminal, where the connection request includes the obtained hotspot name and an access password of the first wireless local area network;

Establishing a connection with the second terminal after the first terminal verifies the hotspot name and the access password sent by the second terminal;

The second terminal displays a local storage file and obtains a file selected by the user;

The second terminal sends the file selected by the user to the first terminal.
The method of claim 1, wherein before the step of acquiring the file downloading instruction by the first terminal, the method further comprises:

The third terminal acquires a transmission instruction of the file to be transmitted;

Determining, by the third terminal, a second wireless local area network that uses the third terminal as a wireless hotspot according to the transmission instruction;

Generating, by the third terminal, a second two-dimensional code, where the second two-dimensional code stores a hotspot name of the second wireless local area network, an access password, and a storage address of the file to be transmitted;

The second terminal scans the second two-dimensional code and parses the second two-dimensional code to obtain a hotspot name, an access password, and a storage address of the file to be transmitted in the second wireless local area network;

Sending, by the second terminal, a connection request to the third terminal, where the connection request includes the acquired hotspot name and access password of the second wireless local area network;

After the third terminal verifies the hotspot name and the access password sent by the second terminal, establishing a connection with the second terminal;

The second terminal downloads the to-be-transmitted file from the third terminal according to the storage address and stores the file.
The method according to claim 2, wherein the step of the first terminal generating the first two-dimensional code and displaying comprises: the first terminal encrypting by using a preset key to generate a first two-dimensional code and displaying ;

The step of the second terminal scanning the first two-dimensional code and parsing the first two-dimensional code to obtain the hotspot name and the access password of the first wireless local area network includes: the second terminal scanning obtains the first Decrypting the first two-dimensional code by using the preset key to obtain a hotspot name and an access password of the first wireless local area network;

The step of the third terminal generating the second two-dimensional code and displaying the method includes: the third terminal encrypting by using the preset key to generate a second two-dimensional code and displaying the same;

The step of the second terminal scanning the second two-dimensional code and parsing the second two-dimensional code to obtain the hotspot name, the access password, and the storage address of the file to be transmitted in the second wireless local area network includes: The second terminal scan acquires the second two-dimensional code, and decrypts the second two-dimensional code by using the preset key to obtain a hotspot name, an access password, and the to-be-address of the second wireless local area network. The storage address of the transfer file.
The method according to claim 2, wherein the step of the first terminal generating the first two-dimensional code and displaying comprises: generating, by the first terminal, a first two-dimensional code according to the file downloading instruction, and displaying The first two-dimensional code stores a hotspot name, an access password, and a file download instruction of the first wireless local area network;

The step of the second terminal scanning the first two-dimensional code and parsing the first two-dimensional code to obtain the hotspot name and the access password of the first wireless local area network includes: the second terminal scanning the first And acquiring the hotspot name, the access password, and the file downloading instruction of the first wireless local area network by using the two-dimensional code and parsing the first two-dimensional code;

The step of the second terminal displaying the local storage file and acquiring the file selected by the user includes: displaying, by the second terminal, the local storage file according to the file download instruction, and acquiring the file selected by the user;

The third terminal generates a second two-dimensional code and displays the second two-dimensional code storing the second The step of the hotspot name of the wireless local area network, the access password, and the storage address of the file to be transmitted includes: the third terminal generates a second two-dimensional code according to the transmission instruction, and displays the second two-dimensional code. a hotspot name of the second wireless local area network, an access password, a storage address of the file to be transmitted, and a transmission instruction;

The step of the second terminal scanning the second two-dimensional code and parsing the second two-dimensional code to obtain the hotspot name, the access password, and the storage address of the file to be transmitted in the second wireless local area network includes: The second terminal scans the second two-dimensional code and parses the second two-dimensional code to obtain a hotspot name, an access password, a storage address of the file to be transmitted, and a transmission instruction of the second wireless local area network;

The step of the second terminal downloading the file to be transmitted from the third terminal according to the storage address and storing the second terminal includes: the second terminal from the third terminal according to the transmission instruction and the storage address Download the file to be transferred and store it.
The method according to claim 1, wherein the first terminal is an interactive smart tablet, and the second terminal is a mobile terminal.
A file transmission system includes a first terminal and a second terminal;

The first terminal includes: an instruction acquisition module, a local area network creation module, a two-dimensional code generation module, and a connection module; the second terminal includes: a scanning module, a sending module, and a selection module;

The instruction acquisition module is configured to acquire a file download instruction;

The local area network creating module is configured to create, according to the file downloading instruction, a first wireless local area network that uses the first terminal as a wireless hotspot;

The two-dimensional code generating module is configured to generate and display a first two-dimensional code, where the first two-dimensional code stores a hotspot name and an access password of the first wireless local area network;

The scanning module is configured to scan the first two-dimensional code and parse the first two-dimensional code to obtain a hotspot name and an access password of the first wireless local area network;

The sending module is configured to send a connection request to the first terminal, where the connection request includes a hotspot name and an access password of the first wireless local area network acquired by the scanning module;

The connection module is configured to establish a connection with the second terminal after the hotspot name and the access password sent by the second terminal are verified;

The selecting module is configured to display a local storage file and obtain a file selected by the user;

The sending module is further configured to send a file selected by the user to the first terminal.
The system according to claim 6, further comprising a third terminal, the third terminal comprising: a transmission instruction acquisition module, a creation module, a two-dimensional code processing module, and a connection processing module; Including the download module;

The transmission instruction acquisition module is configured to acquire a transmission instruction of a file to be transmitted;

The creating module is configured to create, according to the transmission instruction, a second wireless local area network that uses the third terminal as a wireless hotspot;

The two-dimensional code processing module is configured to generate and display a second two-dimensional code, where the second two-dimensional code stores a hotspot name, an access password, and a storage address of the file to be transmitted of the second wireless local area network. ;

The scanning module is configured to scan the second two-dimensional code and parse the second two-dimensional code to obtain a hotspot name, an access password, and a storage address of the file to be transmitted of the second wireless local area network;

The sending module is configured to send a connection request to the third terminal, where the connection request includes a hotspot name and an access password of the second wireless local area network acquired by the scanning module;

The connection processing module is configured to establish a connection with the second terminal after the hotspot name and the access password sent by the second terminal are verified;

The downloading module is configured to download and store the to-be-transmitted file from the third terminal according to the storage address.
The system according to claim 7, wherein the two-dimensional code generating module is configured to generate and display a first two-dimensional code by using a preset key;

The scanning module is configured to scan and obtain the first two-dimensional code, and decrypt the first two-dimensional code by using the preset key to obtain a hotspot name and an access password of the first wireless local area network;

The two-dimensional code processing module is configured to perform encryption by using the preset key to generate a second two-dimensional code and display the same;

The scanning module is configured to scan and acquire the second two-dimensional code, and decrypt the second two-dimensional code by using the preset key to obtain a hotspot name, an access password, and The storage address of the file to be transferred.
The system according to claim 7, wherein said two-dimensional code generating module is Generating a first two-dimensional code according to the file downloading instruction, and displaying, by the first two-dimensional code, a hotspot name, an access password, and a file downloading instruction of the first wireless local area network;

The scanning module is configured to scan the first two-dimensional code and parse the first two-dimensional code to obtain a hotspot name, an access password, and a file download instruction of the first wireless local area network;

The selecting module is configured to display a local storage file according to the file download instruction, and obtain a file selected by the user;

The two-dimensional code processing module is configured to generate and display a second two-dimensional code according to the transmission instruction, where the second two-dimensional code stores a hotspot name, an access password, and the to-be-address of the second wireless local area network. Transfer the storage address and transfer instructions of the file;

The scanning module is configured to scan the second two-dimensional code and parse the second two-dimensional code to obtain a hotspot name, an access password, a storage address of the file to be transmitted, and a transmission instruction of the second wireless local area network. ;

The downloading module is configured to download and store the to-be-transmitted file from the third terminal according to the transmission instruction and the storage address.
The system according to claim 6, wherein the first terminal is an interactive smart tablet, and the second terminal is a mobile terminal.