Invoicing method and system based on distributed lock

The invention discloses an invoicing method and system based on a distributed lock, and the method comprises the steps: connecting an online bill interface, obtaining an invoiced bill, and obtaining the to-be-invoiced amount data according to the invoiced bill; obtaining a bill unique code corresponding to the to-be-invoiced amount data; adding lock logic before querying the to-be-invoiced amount data; after the lock logic is added successfully, executing the deduction operation of the invoiced amount; and after the deduction operation of the invoicing amount is completed, updating amount data after deduction to a database, and executing an unlocking operation. 本发明公开了一种基于分布式锁的开票方法和系统，所述方法包括：连接在线票据接口，获取开票完毕的票据，根据所述开票完毕票据获取待开票金额数据；获取所述待开票金额数据对应的票据唯一编码；在查询所述待开票金额数据前添加锁逻辑；添加锁逻辑成功后执行已开票金额的减扣操作；完整所述已开票金额的减扣操作后，将减扣完毕的金额数据更新到数据库，并执行解锁操作。