Terminal emulate method based on Java

Abstract

A terminal emulating method on the basis of Java relates to the electric communication technique and is characterized in that: creating a equivalent body for the controlling member of Java interface, creating a deputy equivalent body at the server, creating corresponding effecting equivalent body at the user terminal, the deputy equivalent body transmits a drawing request of the interface controlling member to the effecting equivalent body at the user terminal through the network, and the effecting equivalent body accomplishes the actual drawing process of the user interface; the creation of the equivalent body is provided by setting the system parameters awt. Toolkit and using the designated tool packet; the controlling members of Java interface include the controlling members of heavy grade and the controlling member of light grade.

Description

technical field [0001] The invention relates to electric communication technology, in particular to a Java-based terminal emulation method. Background technique [0002] Windows Server Terminal Services provides the ability to remotely access the server's desktop through the "thin client" software that works as a terminal emulator. Terminal Services only transmits the user interface of the program to the client, and the client returns keyboard and mouse actions, which are handled by the server. deal with. [0003] All application execution, data processing, and data storage occur on the server, and applications and user desktops are transmitted over the network and displayed through terminal emulation software; similarly, keyboard input and mouse clicks are also transmitted between the server and the terminal emulation software over the network Transport, managed transparently by the server operating system. [0004] In this mode, the application runs completely on the ser...

AI Technical Summary

Problems solved by technology

[0006] Windows Server Terminal Service is a general service, and its main disadvantages are: 1) The server must use the Windows Server operating system, and the Java program must run on this operating system, so the cross-platform characteristics of Java are limited

[0007] 2) Windows Server Terminal Services is based on the desktop, which means that the terminal emulation program displays the desktop of the server instead of just the running program. If you want to use Terminal Services for system integration, the interface is not friendly

[0008] 3) The terminal service consumes a lot of system resources when it is running, especially when it is running, it needs to perform a lot of image processing and compression operations, which has relatively high requirements for CPU and memory.

[0013] 1) The software scale is huge: when the Java program is running, the interface controls are replaced by RAWT service programs with customized controls, and the creation and display information of the controls are passed to the client through these custom controls, and the terminal program of the client uses These information will restore the controls. RAWT needs to process all the Java interface controls, and the implementation has too many layers and is too complicated.

[0014] 2) If Java adds a new control type, RAWT needs to be updated accordingly, which makes it difficult to maintain and expand

[0015] 3) In addition to interface controls, RAWT basically rewrites all Java class libraries. Methods such as Java object serialization are implemented by themselves, and are not compatible with Java standard methods. The technology is difficult and unstable. For Complex programs often throw a large number of exceptions

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