CN112860161A - Multi-screen capturing and recording method and device based on examination anti-cheating scene - Google Patents
Multi-screen capturing and recording method and device based on examination anti-cheating scene Download PDFInfo
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Abstract
The embodiment of the application discloses a multi-screen capturing and recording method and device based on an examination anti-cheating scene, which can be used for carrying out screen recording on a screen of an access terminal according to preset duration to obtain a plurality of recorded screen videos, splicing the video frames of the plurality of recorded screen videos corresponding to the same moment into a target video frame in a non-overlapping mode, and generating a first recorded screen file according to the target video frame. The access terminal has multiple screens. The method comprises the steps of carrying out screen capture on a screen of an access terminal according to a preset frequency to obtain a plurality of screen captures, splicing the screen captures corresponding to the same moment into a target screen capture frame in a non-overlapping mode, and generating a first screen capture file according to the target screen capture frame. Therefore, the screen recording and screen capturing are carried out on the plurality of screens of the access terminal simultaneously in the examination process, the behavior that the examinees access the plurality of screens to cheat can be effectively monitored, the cheating behavior of the examinees is reduced, and the fairness of the online examination is improved.
Description
Technical Field
The application relates to the field of online examinations, in particular to a method and a device for multi-screen capturing and recording based on an examination anti-cheating scene.
Background
With the continuous development of information technology, the traditional paper examination cannot meet the requirement of information management. More and more enterprises and institutions are beginning to use online tests instead of paper tests. Through years of research and practice, the functions and performances of the online examination are continuously improved, and the reliability and the fairness of the examination results are also continuously improved. For fraud in online examination, the commonly adopted measures are to limit the functions of the operating system or add monitoring modules in the system, such as anti-screen-cut in examination, face recognition photographing, AI behavior monitoring, camera screen recording monitoring, and the like. The existing online examination system adopts several methods at the same time, so that cheating is prevented to the maximum extent. The first screen-cut-preventing technology is mainly used for online examinations in the public internet environment, and can prevent examinees from being switched to other areas except test paper in answering projects, for example, being switched to other webpages to search related data and answers. The second is an anti-plug external storage device, the object for preventing plugging is generally a flash disk, a magnetic disk or other electronic devices with storage media, in these devices, the examinee may store some data related to the examination, thereby achieving the purpose of cheating, therefore, the means for preventing plugging the external storage device can prevent the cheating to a certain extent. The third is a behavior monitoring mode based on a camera, and the mode is mainly used for preventing the cheating behaviors of multiple persons, such as mutual communication and communication of examinees during the examination. The last method is to carry out all-around monitoring on the whole computer desktop for answering questions of the examinees through screen capture and recording, and any operation behaviors of the players in the examination process are recorded and filed, so that cheating of the examinees can be effectively prevented.
However, these measures cannot effectively prevent cheating behaviors that an examinee uses a terminal to access a plurality of screen displays, views an examination answer page at one end and views other contents in the rest of the examination.
How to capture and record screens of a plurality of screens accessed by an examinee by using a terminal in an online examination process is a technical problem to be solved urgently in the field.
Disclosure of Invention
In order to solve the technical problem, the application provides a multi-screen capturing and recording method and device based on an examination anti-cheating scene, a plurality of screens of an access terminal can be simultaneously recorded and captured in the examination process, the behavior of cheating by an examinee accessing the plurality of screens can be effectively monitored, the cheating behavior of the examinee is reduced, and the fairness of an online examination is improved.
In order to achieve the purpose, the technical scheme is as follows:
on one hand, the application provides a multi-screen capturing and recording method based on an examination anti-cheating scene, and the method comprises the following steps:
carrying out screen recording on a screen of an access terminal according to a preset time length to obtain a plurality of screen recording videos;
splicing the video frames of the screen recording videos corresponding to the same moment into a target video frame in a non-overlapping manner, and generating a first screen recording file according to the target video frame; the number of the screens of the access terminal is multiple;
the screen of the access terminal is captured according to a preset frequency to obtain a plurality of captured screens;
splicing the screen capturing frames corresponding to the same moment into a target screen capturing frame in a non-overlapping manner, and generating a first screen capturing file according to the target screen capturing frame;
and uploading the generated first screen recording file and the first screen cutting file to a background server according to an uploading period, wherein the first screen recording file and the first screen cutting file are generated in the uploading period.
Optionally, the uploading the generated first screen recording file and the first screen capturing file to a background server according to the uploading period includes:
and compressing the first screen recording file and the first screen capturing file to obtain a final file, and uploading the final file to a background server.
Optionally, the method further includes:
and judging whether the final file reaches a background server within a preset transmission time length, and if not, giving an alarm.
Optionally, the screen recording specifically includes:
and screen recording is carried out by adopting Java FFmpeg.
Optionally, the screen capturing specifically includes:
and acquiring pixels on a screen of the access terminal, storing the pixels into a BufferdImage object, and writing the BufferImage object into an image file through a Java IO input and output stream to finish screen capture.
On the other hand, this application provides a many screen capturing and record screen device based on scene of practising fraud is prevented in examination, the device includes:
the screen recording unit is used for carrying out screen recording on a screen of the access terminal according to preset time length to obtain a plurality of screen recording videos;
the first screen recording file generating unit is used for splicing the video frames of the plurality of screen recording videos corresponding to the same moment into a target video frame in a non-overlapping manner and generating a first screen recording file according to the target video frame; the number of the screens of the access terminal is multiple;
the screen capturing unit is used for capturing a screen of the access terminal according to a preset frequency to obtain a plurality of captured screens;
the first screenshot file generating unit is used for splicing the plurality of screenshots corresponding to the same moment into a target screenshot frame in a non-overlapping manner and generating a first screenshot file according to the target screenshot frame;
and the uploading unit is used for uploading the generated first screen recording file and the first screen cutting file to a background server according to an uploading period, and the first screen recording file and the first screen cutting file are generated in the uploading period.
Optionally, the uploading unit includes:
and the compression unit is used for compressing the first screen recording file and the first screen capturing file to obtain a final file, and uploading the final file to a background server.
Optionally, the apparatus further comprises:
and the alarm unit is used for judging whether the final file reaches the background server within the preset transmission time length or not, and if not, giving an alarm.
Optionally, the screen recording specifically includes:
and screen recording is carried out by adopting Java FFmpeg.
Optionally, the screen capturing specifically includes:
and acquiring pixels on a screen of the access terminal, storing the pixels into a BufferdImage object, and writing the BufferImage object into an image file through a Java IO input and output stream to finish screen capture.
According to the technical scheme, the multi-screen capturing and recording method and device based on the examination anti-cheating scene can be used for carrying out screen recording on a screen of an access terminal according to preset duration to obtain a plurality of recorded screen videos, splicing the video frames of the plurality of recorded screen videos corresponding to the same moment into one target video frame in a non-overlapping mode, and generating the first recorded screen file according to the target video frame. The access terminal has multiple screens. The method comprises the steps of carrying out screen capture on a screen of an access terminal according to a preset frequency to obtain a plurality of screen captures, splicing the screen captures corresponding to the same moment into a target screen capture frame in a non-overlapping mode, and generating a first screen capture file according to the target screen capture frame. Therefore, the screen recording and screen capturing are carried out on the plurality of screens of the access terminal simultaneously in the examination process, the behavior that the examinees access the plurality of screens to cheat can be effectively monitored, the cheating behavior of the examinees is reduced, and the fairness of the online examination is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a multi-screen capturing and recording method based on an examination anti-cheating scene according to an embodiment of the present application;
fig. 2 is a flowchart of a process of generating a terminal monitoring code according to an embodiment of the present application;
fig. 3 is a schematic diagram of a terminal real-time monitoring interface provided in an embodiment of the present application;
fig. 4 is a flowchart of terminal monitoring provided in the embodiment of the present application;
fig. 5 is an overall framework diagram of a multi-screen capture and recording based on an examination anti-cheating scene according to an embodiment of the present application;
fig. 6 is a schematic diagram of a multi-screen capturing and recording device based on an examination anti-cheating scene according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
The inventor of the application finds that, along with the continuous development of information technology, the traditional paper examination cannot meet the requirement of information management. More and more enterprises and institutions are beginning to use online tests instead of paper tests. Through years of research and practice, the functions and performances of the online examination are continuously improved, and the reliability and the fairness of the examination results are also continuously improved. For fraud in online examination, the commonly adopted measures are to limit the functions of the operating system or add monitoring modules in the system, such as anti-screen-cut in examination, face recognition photographing, AI behavior monitoring, camera screen recording monitoring, and the like. The existing online examination system adopts several methods at the same time, so that cheating is prevented to the maximum extent. The first screen-cut-preventing technology is mainly used for online examinations in the public internet environment, and can prevent examinees from being switched to other areas except test paper in answering projects, for example, being switched to other webpages to search related data and answers. The second is an anti-plug external storage device, the object for preventing plugging is generally a flash disk, a magnetic disk or other electronic devices with storage media, in these devices, the examinee may store some data related to the examination, thereby achieving the purpose of cheating, therefore, the means for preventing plugging the external storage device can prevent the cheating to a certain extent. The third is a behavior monitoring mode based on a camera, and the mode is mainly used for preventing the cheating behaviors of multiple persons, such as mutual communication and communication of examinees during the examination. The last method is to carry out all-around monitoring on the whole computer desktop for answering questions of the examinees through screen capture and recording, and any operation behaviors of the players in the examination process are recorded and filed, so that cheating of the examinees can be effectively prevented.
However, these measures cannot effectively prevent cheating behaviors that an examinee uses a terminal to access a plurality of screen displays, views an examination answer page at one end and views other contents in the rest of the examination.
How to capture and record screens of a plurality of screens accessed by an examinee by using a terminal in an online examination process is a technical problem to be solved urgently in the field.
In order to solve the above problems, in the embodiment of the present application, a multi-screen capture and recording method and device based on an examination anti-cheating scene are provided, which may perform screen recording on a screen of an access terminal according to a preset duration to obtain a plurality of recorded screen videos, splice the video frames of the plurality of recorded screen videos corresponding to the same moment into a target video frame without overlapping, and generate a first recorded screen file according to the target video frame. The access terminal has multiple screens. The method comprises the steps of carrying out screen capture on a screen of an access terminal according to a preset frequency to obtain a plurality of screen captures, splicing the screen captures corresponding to the same moment into a target screen capture frame in a non-overlapping mode, and generating a first screen capture file according to the target screen capture frame. Therefore, the screen recording and screen capturing are carried out on the plurality of screens of the access terminal simultaneously in the examination process, the behavior that the examinees access the plurality of screens to cheat can be effectively monitored, the cheating behavior of the examinees is reduced, and the fairness of the online examination is improved.
Various non-limiting embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Exemplary method
Referring to fig. 1, the flowchart is a flow chart of a multi-screen capturing and recording method based on an examination anti-cheating scene according to an embodiment of the present invention. As shown in fig. 1, may include:
s101, carrying out screen recording on a screen of the access terminal according to preset time length to obtain a plurality of screen recording videos.
In the embodiment of the application, a screen of an access terminal is recorded according to a preset time length, firstly, the generation and verification of a monitoring code of an examinee terminal are carried out to determine the examination qualification and the authority of the examinee, and an internal operation logic generates a verification code used by the examinee for examination identification by acquiring the MAC address and the IP address of an examinee examination machine; the verification is completed before entering the exam. Meanwhile, the terminal monitoring code can also bind uploaded monitoring information and track and position examination terminal equipment of the examinee.
Wherein, the MAC address: that is, the Media Access Control Address is a Media Access Control Address, and also becomes a local area network Address, a MAC Address, an ethernet Address, or a physical Address. Which is an address used to confirm the location of the network device. IP address: the Internet Protocol Address is an Internet Protocol Address, which is also called an Internet Protocol Address. The IP address is a uniform address format provided by the IP protocol, and it allocates a logical address to each network and each host on the internet, so as to mask the difference of physical addresses.
The terminal monitoring code is used as a certificate for enabling the examinee to enter the examination, and is composed of a hexadecimal character string with the length of 10. The generation process of the terminal monitoring code is shown in fig. 2.
It can be seen from the above process that the generation process of the terminal monitoring code is to first obtain the IP address and MAC address of the user's own machine. Mixing the acquired IP address with the current system date parameter, and encrypting through an MD5 encryption algorithm to obtain a character string S1 to be processed; mixing the obtained MAC address with a date parameter, and encrypting through an SHA encryption algorithm to obtain a character string to be processed S2; then, according to the login verification information input by the user, a user identity information character string to be processed is obtained S3; the last-time system date parameter S4; and finally, splicing the four character strings, encrypting the four character strings again through an MD5 encryption algorithm to obtain an initial terminal monitoring code monitorekeye, and finally further processing the initial terminal monitoring code monitorekeye to obtain a final terminal monitoring code monitorekeye.
Wherein, MD 5: is a message digest algorithm, a widely used cryptographic hash function, which generates a 128-bit (16-byte) hash value to ensure the integrity of the message transmission. SHA: secure Hash Algorithm (Secure Hash Algorithm), which is a family of cryptographic Hash functions. It can calculate the algorithm of character string (also called message abstract) with fixed length corresponding to a digital message.
Referring to fig. 3, the final normal terminal monitoring code is displayed on the terminal system. The terminal visual monitoring system adopts a JavaFX visual programming framework, and realizes user interaction of a client software system. The visualization mainly comprises a user login interface, and a user inputs related information according to a prompt to perform login authentication.
After the user logs in successfully, the terminal monitoring system enters a terminal monitoring code display interface, meanwhile, the system starts to enter a monitoring state, namely screen capture and screen recording are started, and information such as the system monitoring state and the monitoring state is displayed and uploaded below in real time. Referring to fig. 4, a flowchart of terminal monitoring provided in an embodiment of the present application is shown.
After the terminal is successfully verified, images and audios of all screens of the access terminal are captured, further combined and converted into videos, and screen recording is carried out according to preset duration to obtain a plurality of screen recording videos. For example, two minutes may be used as the preset video duration, and four screens of the access terminal may be used, so as to generate four screen recording files corresponding to respective screens within two minutes. The method and the device adopt Java FFmpeg to record the screen.
S102, splicing the video frames of the screen recording videos corresponding to the same moment into a target video frame in a non-overlapping manner, and generating a first screen recording file according to the target video frame; the access terminal has a plurality of screens.
The formation of video essentially depends on a single frame of picture, i.e. when consecutive multi-frame pictures are consecutive, a video file is formed. The screen recording function in the application is also based on this, in the embodiment of the application, it is convenient for a background worker to view, and therefore, a plurality of screen recording videos need to be spliced together without overlapping corresponding to video frames at the same time to form a target video frame, the spliced continuous target video frames are integrated together through conversion, and finally a first screen recording file is formed, and a video coding format in the first screen recording file can be MP 4.
Because the number of the screens of the access terminal is multiple, for example, when the number of the access terminals is four at the same time, four corresponding video frames can be generated, the four video frames can be spliced without overlapping according to a field character grid to obtain a target video frame, and a series of continuous target video frames form a first screen recording file.
S103, screen capturing is carried out on the screen of the access terminal according to a preset frequency to obtain a plurality of screen capturing.
In this embodiment of the application, the screen of the access terminal may be captured according to a preset frequency (for example, the screen is captured according to the frequency of 1 time/minute), that is, pixels on the screen of the access terminal are obtained according to the preset frequency by using a method provided in a Robot class in Java JDK, the pixels are stored in a bufferdmage object, and the bufferdmige object is written into an image file through a Java IO input output stream, so that the screen capture is completed. I.e. the screen of the examinee is monitored by the dimension of the image.
It should be noted that the preset frequency can be set by those skilled in the art according to practical situations, and the present application is not limited in particular.
And S104, splicing the screen capturing frames corresponding to the same moment into a target screen capturing frame in a non-overlapping manner, and generating a first screen capturing file according to the target screen capturing frame.
Similar to the operation in S102, in the embodiment of the present application, multiple screen shots corresponding to the same time may be spliced into one target screen shot without overlapping. For example, when the number of the screens of the access terminal is four at the same time, four corresponding screen capture frames can be generated, the four screen capture frames can be spliced without overlapping according to a field-shaped grid to obtain a target screen capture frame, and a first screen capture file is generated according to the target screen capture frame.
S105, uploading the generated first screen recording file and the first screen cutting file to a background server according to an uploading period, wherein the first screen recording file and the first screen cutting file are generated in the uploading period.
In the embodiment of the application, the generated first screen recording file and the first screen cutting file can be uploaded to the background server according to the uploading period, and the first screen recording file and the first screen cutting file are generated in the uploading period. For example, ten minutes may be set as an upload cycle, and the first screenshot file generated in ten minutes are uploaded to the background server once every ten minutes.
Before uploading, in order to meet the requirement of server load, the first screen recording file and the first screen capturing file can be compressed in a certain proportion. The scheme adopted by the compression in the application is to compress the picture according to the specified size and the specified precision, so that the final size of the picture is limited in a certain range to meet the load requirement of the server. And uploading the final file obtained after compression to a background server for further analysis by the background server. If the first screen recording file and the first screen capture file are not compressed, when screen capture and screen capture information of the examinee is uploaded in a centralized manner, great pressure is applied to a background server, and therefore the server is in a downtime risk. Therefore, the first screenshot file and the first screenshot file are compressed before uploading in the embodiment of the application.
In addition, whether the final file reaches the background server within the preset transmission time can be judged, and if not, an alarm is given so that a worker can timely process the file. In the process of taking an examination by an examinee, once the examinee opens the terminal monitoring system until the examination is finished, if the transmission process is normal, the monitoring system of the examinee is reported to a background server to be in a normal running state, and if the transmission process is abnormal (such as interruption, failure in delivery within a preset time and the like), an alarm is given, so that a background manager can find the examination in time and inform a department manager where the examinee is located of corresponding treatment in time.
Besides monitoring the running state of the examinee monitoring software in real time, the background system can also find suspected cheating behaviors in the software in time so as to inform an administrator of corresponding treatment. Specifically, some features of suspected cheating behaviors are defined in an image and video analysis module of the background server for recognition and discovery by a feature extractor. For example, defining the suspected cheating behaviors such as defining the test taker to open an ST (in an office environment) to communicate with other personnel, defining the test taker to open a file or a webpage by using a software tool, defining other copying and pasting behaviors and the like, the system sends an alarm of a corresponding level, and thus the administrator makes further analysis according to manual judgment.
In addition, screen capture and screen recording files of all examinees in the examination process are uploaded to the background server in real time, so that the background server can support an administrator to completely restore the examination process of all examinees after the examination is finished, and can furthest discover any cheating behavior (after the examination, corresponding examination duplication is generally carried out on examinees who win prizes or are ranked ahead).
Fig. 5 is an overall framework diagram of a multi-screen capture and screen recording based on an examination anti-cheating scene, and the examinee can be monitored in an all-around manner through the overall flow framework, so that cheating behaviors of the examinee can be found in time, and the cheating behaviors of the examinee are reduced.
The embodiment of the application provides a multi-screen capturing and recording method based on an examination anti-cheating scene, which can be used for carrying out screen recording on a screen of an access terminal according to preset duration to obtain a plurality of recorded screen videos, splicing the video frames of the plurality of recorded screen videos corresponding to the same moment into a target video frame in a non-overlapping mode, and generating a first recorded screen file according to the target video frame. The access terminal has multiple screens. The method comprises the steps of carrying out screen capture on a screen of an access terminal according to a preset frequency to obtain a plurality of screen captures, splicing the screen captures corresponding to the same moment into a target screen capture frame in a non-overlapping mode, and generating a first screen capture file according to the target screen capture frame. Therefore, the screen recording and screen capturing are carried out on the plurality of screens of the access terminal simultaneously in the examination process, the behavior that the examinees access the plurality of screens to cheat can be effectively monitored, the cheating behavior of the examinees is reduced, and the fairness of the online examination is improved.
Exemplary devices
Referring to fig. 6, a schematic diagram of a multi-screen capturing and recording device based on an examination anti-cheating scene according to an embodiment of the present application is shown. The method can comprise the following steps:
a screen recording unit 201, configured to perform screen recording on a screen of an access terminal according to a preset duration to obtain multiple screen recording videos;
a first screen recording file generating unit 202, configured to splice video frames of the multiple screen recording videos corresponding to the same time into one target video frame without overlapping, and generate a first screen recording file according to the target video frame; the number of the screens of the access terminal is multiple;
a screen capture unit 203, configured to capture a screen of the access terminal according to a preset frequency to obtain multiple captured screens;
a first screenshot file generating unit 204, configured to splice the multiple screenshots corresponding to the same moment into a target screenshot frame without overlapping, and generate a first screenshot file according to the target screenshot frame;
an uploading unit 205, configured to upload the generated first screen recording file and the first screenshot file to a background server according to an uploading period, where the first screen recording file and the first screenshot file are generated in the uploading period.
In some embodiments, the upload unit includes:
and the compression unit is used for compressing the first screen recording file and the first screen capturing file to obtain a final file, and uploading the final file to a background server.
In some embodiments, the apparatus further comprises:
and the alarm unit is used for judging whether the final file reaches the background server within the preset transmission time length or not, and if not, giving an alarm.
In some embodiments, the screen recording is specifically:
and screen recording is carried out by adopting Java FFmpeg.
In some embodiments, the performing of screen capture specifically includes:
and acquiring pixels on a screen of the access terminal, storing the pixels into a BufferdImage object, and writing the BufferImage object into an image file through a Java IO input and output stream to finish screen capture.
The setting of each unit or module of the apparatus of the present application can be implemented by referring to the method shown in fig. 1, and is not described herein again.
The embodiment of the application provides a multi-screen capturing and recording device based on an examination anti-cheating scene, which can record a screen of an access terminal according to preset duration to obtain a plurality of recorded screen videos, splice the plurality of recorded screen videos into a target video frame corresponding to video frames at the same moment without overlapping, and generate a first recorded screen file according to the target video frame. The access terminal has multiple screens. The method comprises the steps of carrying out screen capture on a screen of an access terminal according to a preset frequency to obtain a plurality of screen captures, splicing the screen captures corresponding to the same moment into a target screen capture frame in a non-overlapping mode, and generating a first screen capture file according to the target screen capture frame. Therefore, the screen recording and screen capturing are carried out on the plurality of screens of the access terminal simultaneously in the examination process, the behavior that the examinees access the plurality of screens to cheat can be effectively monitored, the cheating behavior of the examinees is reduced, and the fairness of the online examination is improved.
It should be noted that, in the present specification, all the embodiments are described in a progressive manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus and system embodiments, since they are substantially similar to the method embodiments, they are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only one specific embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A multi-screen capturing and recording method based on an examination anti-cheating scene is characterized by comprising the following steps:
carrying out screen recording on a screen of an access terminal according to a preset time length to obtain a plurality of screen recording videos;
splicing the video frames of the screen recording videos corresponding to the same moment into a target video frame in a non-overlapping manner, and generating a first screen recording file according to the target video frame; the number of the screens of the access terminal is multiple;
the screen of the access terminal is captured according to a preset frequency to obtain a plurality of captured screens;
splicing the screen capturing frames corresponding to the same moment into a target screen capturing frame in a non-overlapping manner, and generating a first screen capturing file according to the target screen capturing frame;
and uploading the generated first screen recording file and the first screen cutting file to a background server according to an uploading period, wherein the first screen recording file and the first screen cutting file are generated in the uploading period.
2. The method of claim 1, wherein uploading the generated first screenshot file and the first screenshot file to a background server according to an upload cycle comprises:
and compressing the first screen recording file and the first screen capturing file to obtain a final file, and uploading the final file to a background server.
3. The method of claim 1, further comprising:
and judging whether the final file reaches a background server within a preset transmission time length, and if not, giving an alarm.
4. The method according to claim 1, wherein the screen recording is specifically:
and screen recording is carried out by adopting Java FFmpeg.
5. The method according to claim 1, wherein the performing of the screen capture specifically comprises:
and acquiring pixels on a screen of the access terminal, storing the pixels into a BufferdImage object, and writing the BufferImage object into an image file through a Java IO input and output stream to finish screen capture.
6. The utility model provides a many screen capturing and record screen device based on scene of practising fraud are prevented in examination which characterized in that, the device includes:
the screen recording unit is used for carrying out screen recording on a screen of the access terminal according to preset time length to obtain a plurality of screen recording videos;
the first screen recording file generating unit is used for splicing the video frames of the plurality of screen recording videos corresponding to the same moment into a target video frame in a non-overlapping manner and generating a first screen recording file according to the target video frame; the number of the screens of the access terminal is multiple;
the screen capturing unit is used for capturing a screen of the access terminal according to a preset frequency to obtain a plurality of captured screens;
the first screenshot file generating unit is used for splicing the plurality of screenshots corresponding to the same moment into a target screenshot frame in a non-overlapping manner and generating a first screenshot file according to the target screenshot frame;
and the uploading unit is used for uploading the generated first screen recording file and the first screen cutting file to a background server according to an uploading period, and the first screen recording file and the first screen cutting file are generated in the uploading period.
7. The apparatus of claim 6, wherein the upload unit comprises:
and the compression unit is used for compressing the first screen recording file and the first screen capturing file to obtain a final file, and uploading the final file to a background server.
8. The apparatus of claim 6, further comprising:
and the alarm unit is used for judging whether the final file reaches the background server within the preset transmission time length or not, and if not, giving an alarm.
9. The apparatus according to claim 6, wherein the screen recording is specifically:
and screen recording is carried out by adopting Java FFmpeg.
10. The device according to claim 6, wherein the performing of the screen capture specifically is:
and acquiring pixels on a screen of the access terminal, storing the pixels into a BufferdImage object, and writing the BufferImage object into an image file through a Java IO input and output stream to finish screen capture.
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