Questioning and answering method, method for generating questioning and answering system, and method for modifying questioning and answering system

A questioning and answering method, applied to a questioning and answering system, comprising:

• acquiring initial request information input by a user, and matching a knowledge point in a knowledge base with the initial request information, wherein a plurality of knowledge points are stored in the knowledge base, and each of the knowledge points comprises a question and an answer;
• if it is determined that the initial request information input by the user matches a thematic question of a target thematic knowledge point, triggering a root node of a target questioning and answering flow module corresponding to the target thematic knowledge point according to a thematic answer in the target thematic knowledge point, wherein the target questioning and answering flow module comprises at least one transaction node;
• and
• when the target transaction node in the questioning and answering flow module is successfully triggered, constructing, by the target transaction node, target transaction information according to at least one target dynamic variable input to the target transaction node, sending, by the target transaction node, the target transaction information to a corresponding target service invocation address, and returning a target transaction processing result fed back by the target service invocation address to the target questioning and answering flow module, so that the target questioning and answering flow module performs further execution according to the target transaction processing result.