Service component and application software development method and system based on the service component

A service component and application software development method and system based on the service component are provided. The service component includes: service component interface; service data storage unit; service logic unit. The said application software development method based on the service component includes: determining the service flow topology corresponding to the application software function to be implemented; determining the service components required in the current service flow and the connection relationship among each service component according to the said service flow topology; after obtaining the service components required by current service flow, assembling the obtained service components to form said application software corresponding to the function to be implemented according to the said connection relationship.