Method and device for sending system short message based on SPI

The invention relates to a method and a device for sending system short message based on SPI. The method comprises the steps that: constructing a standard short message interface and instantiating; carrying out processing based on a standard short message interface to meet the requirements of different application scenes; judging the range of a business domain to which the application business scene belongs and a corresponding interface calling template through the application business scene, and judging a service needing to be called to trigger and call a short message device and construct a standard calling interface; constructing a new service loader and constructing a loading class processing object according to the service loader; traversing all services in the configuration file, and instantiating class reflection loading in the configuration file. According to the invention, through the application of the SPI mechanism in the aspect of short messages, a developer does not need to change a source code, and extension is realized; on the premise of conforming to an opening and closing principle, expansion or strategy change can be flexibly realized only by adding or modifying configuration, so that the purposes of flexible application of the system, minimum development cost, acceleration of online efficiency of the system and improvement of timeliness are achieved.