Message testing method for front-end system, and simulation baffle system

The invention provides a message testing method for a front-end system, and a simulation baffle system. The message testing method for the front-end system comprises the following steps of: obtaining a request message sent by the front-end system to be tested; according to the pre-set message length, coding format and message format definition in an XML configuration file, analyzing the request message so as to obtain a transaction code; according to a return message header format definition file in the message format definition and the transaction code, inquiring a simulation return data file corresponding to the transaction code from a locally stored simulation return data folder; according to the transaction code, the simulation return data file and the return message header format definition file, generating a simulation return message; and sending the simulation return message to the front-end system to be tested. By utilizing the message testing method for the front-end system, and the simulation baffle system disclosed by the invention, product systems, such as MCIS/CSPA/IST, directly connected with a network bank system, can be simulated; a message sent by the network bank system is received; interface return message data defined by systems, such as MCIS/CSPA/IST, can be simulated; and thus, functional transaction of a network bank is smoothly carried out, and cannot be restricted by a testing environment.