Design And Implementation Of Vegetable Wholesale Trading And Traceability System Based On Android

Vegetables can provide various vitamins for the human body and play an important role in people's lives.Over the past few years,the media has reported a lot of safety incidents about vegetable products,which has a great impact on people's health and life.The quality and safety of vegetables has become a hot topic of social concern.Vegetable safety traceability has emerged.Through the investigation of the circulation and tracing process of vegetables,this paper finds that there are some shortcomings,such as high retroactive cost,lack of transparency in the wholesale market of vegetables and lack of supervision.And most of the vendors and supermarkets did not provide consumer oriented vegetable scavenging traceability methods,and consumers did not know exactly what they bought and the sources of supply.Therefore,by electronization of local vegetable trading in the wholesale market,tracing back to the wholesale market and the final consumer market,the supervision of the wholesale market of vegetables is strengthened,and the transparency of wholesale and retail is strengthened so that a certain degree of vegetable tracing can be realized.The main work of this paper is summarized as follows:(1)This paper conducts market research,collects and analyzes demand.According to the actual situation of consumer,peddler,vegetable wholesaler and vegetable wholesale market,the functional demand analysis is carried out,and the feasibility is analyzed from three aspects of economy,operation and technology.(2)This paper designs the transaction and traceability platform of the vegetable wholesale market,The conceptual model and relational model of the database are designed.An object-oriented approach is used to design vegetable wholesale trading and traceability platform based on Android,A background management platform based on B/S architecture,which includes Wholesaler management,vegetable management,order management and evaluation management,is designed,and an electronic trading platform for vegetable wholesalers and retailers based on Android is designed to provide vegetables wholesalers with the ability to publish vegetables,generate vegetable information QR codes,modify vegetable information,provide vegetables for retailers to view,add shopping carts,Submit orders,generate transaction information QR code and other functions.The implementation and test of the platform are also carried out.(3)This paper designs and implements trace back based on two-dimensional codes.The product traceability module is divided into two parts,one part is the vegetable wholesalers provide the vegetable information two-dimensional code to the retailers,the vegetable information is provided by the farmers,and the wholesalers are audited by the vegetable wholesale market after the wholesalers enter the vegetable information.The other part provides the retailers with the two-dimensional code of the transaction information including the two-dimensional code of vegetable information to the consumers,and the consumers can scan the two-dimensional code by scanning the two-dimensional code.Check out vegetable trading information and detailed information about vegetable production sources.