Service construction method and device, medium and server

The invention provides a service construction method and device based on ship multi-level data, a medium and a server. The service construction method based on ship multi-level data comprises the steps of obtaining ship entity data and input parameters and output parameters of an application program interface, performing classification and modeling on the ship entity data to generate a hierarchical model of the ship entity data, generating a ship data directory of a tree structure according to the hierarchical model, wherein the ship data directory comprises a ship entity directory, and the ship entity directory conforms to the topological relation of the hierarchical model, generating a ship data file under the corresponding ship data directory, generating a ship entity database, wherein the ship entity database is used for data sharing and maintenance of multiple systems, and creating an application program interface of the ship entity database based on the ship data file. According to the method, the accur