Communication application layer protocol analysis method and system for various types of data streams

The invention discloses a communication application layer protocol analysis method and system for various types of data streams, and the method comprises the steps: defining an analysis grammar according to a communication application layer protocol, describing the communication application layer protocol through employing the analysis grammar in a format of a readable character string, and enabling the analysis grammar to be composed of a plurality of minimum matching rules; loading an analysis grammar, and mapping the defined analysis grammar into a computer program segment from the character string; executing analysis, obtaining a source data stream, starting execution from the first minimum matching rule, executing the first minimum matching rule, updating the initial position, executing the next minimum matching rule until all the minimum matching rules are executed, and outputting analyzed target data and labels; the system comprises a selection unit, an analysis grammar loadingunit, an analysis grammar