Java-based dynamic command loading method and device

Abstract

The invention discloses a java-based dynamic command loading method and device. The java-based dynamic command loading method comprises the following steps of: creating an instance of an interface implementation class, wherein the instance of the interface implementation class comprises at least one command annotation; receiving a dynamic loading command, wherein the dynamic loading command comprises a command name; and matching the command name to be dynamically loaded with the command annotation of the instance of the interface implementation class, and if the command name to be dynamically loaded is successfully matched with the command annotation of the instance of the interface implementation class, calling the instance, corresponding to the command annotation, of the interface implementation class. The method and device disclosed by the invention can effectively reduce the coupling degree of programs and are beneficial for improving the expansion capability of the programs.

Description

technical field [0001] The invention relates to the technical field of software architecture, in particular to a java-based method and device for dynamically loading commands. Background technique [0002] A software architecture is a set of related abstract patterns used to guide the design of all aspects of a large software system. [0003] Java annotations: annotations (Annotation), also known as metadata. A code-level specification. It is a feature introduced by JDK1.5 and later versions, and it is at the same level as classes, interfaces, and enumerations. It can be declared in front of packages, classes, fields, methods, local variables, method parameters, etc., to explain and comment on these elements. Annotations exist in the code with ‘@annotation name’. According to the number of annotation parameters, we can divide annotations into three categories: tag annotations, single-value annotations, and complete annotations. None of them will directly affect the seman...

AI Technical Summary

Problems solved by technology

[0004] In practical applications, the general approach is to write the implementation class of each function, and load different function classes to realize related functions according to the command. This is highly coupled for architecture design, and it is not easy to expand and maintain in the software life cycle.

Too high system coupling is not conducive to expansion and maintenance. Modifying the content of a class requires modifying multiple related classes. The maintenance cost of the program code is very high.

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