Research On Two-dimensional Harcode Encoding And Decoding Based On Resttul Web Services

Recently, with the development of information network technology, the demandfor more information indicated by barcode symbol is growing. However, because of itssmall information storage capacity, low error correction ability, and be as a sign touse, it also needs to rely on support of external database, which is more vulnerable tobedisturbed by outside pollution, leading to defects such as identify incorrectly, so thatits application scope is limited largely. In order to solve problems which is inextricableto adimensional barcode intractable, the two dimensional barcode is generated, which iscoded in vertical and horizontal direction on the basis of the one dimensional barcode,and,relative to a d barcode,can store more information and has functions like errorcorrection and encryption and more widely used space.At present, although interaction model has a great success based on RPC(RemoteProcess Call)in relative close and smaller application system.However, in the openInternet level,Web application system distributed has troubles such as tight couplingand complex interface,which will be difficult to achieve the scalability of the Web level.REST(Representational State Transfer) is not only a description of the principle ofdesign to the current Web system structure, but also a summary to the most successfulelements of Web application, the interactive model of RESTful Web service willovercome shortcomings to the model based on RPC. In allusion to the Web applicationprocess for distributed with tightly couple and complex interface issues,this paper uses anew design idea, and put forward a kind of design scheme based on the RESTfulWebServices:adopting REST and the resources oriented structure(ROA) principle、WCFframework to build Web Services and its integrated application to realize the virtues ofWeb application system as the loose coupling between modules, platform, languageindependent and interoperability, scalability strongly etc.And the research to this subject-REST Web Services based on2d barcode hasgreat theoretical significance and practical value to the contemporary Web Services.Therefore this paper tries to combine the two dimensional barcode technology withRestful Web Service technologies to realize decoding function of the two dimensionalbarcode.In this paper, based on the study of the principle of REST,structure oriented theresource,the.net FramWork3.5WCF framework and other development technology, itexpounds the RESTful Web Services scheme,focuses on the analysis of REST designprinciplecomparison similarities and differences between REST style with thetraditional Web Servicesfacing resource system architecture and WCF framework. Thedecoding function of QR two dimensional barcode based on the Web Services isdesigned and realized finally, and verified the feasibility and accessibility of thisscheme through the function test.