PETShop4.0解析

BLL将USL与DAL隔开了，并且加入了业务规则各层的作用1：数据数据访问层:主要是对原始数据（数据库或者文本文件等存放数据的形式）的操作层，而不是指原始数据，也就是说，是对数据的操作，而不是数据库,具体为业务逻辑层或表示层提供数据服务．2：业务逻辑层:主要是针对具体的问题的操作，也可以理解成对数据层的操作,对数据业务逻辑处理，如果说数据层是积木，那逻辑层就是对这些积木的搭建。

3：表示层:主要表示WEB方式,也可以表示成WINFORM方式,WEB方式也可以表现成:aspx, 如果逻辑层相当强大和完善,无论表现层如何定义和更改,逻辑层都能完善地提供服务。

具体的区分方法1：数据数据访问层:主要看你的数据层里面有没有包含逻辑处理，实际上他的各个函数主要完成各个对数据文件的操作。

而不必管其他操作。

2：业务逻辑层:主要负责对数据层的操作。

也就是说把一些数据层的操作进行组合。

3：表示层:主要对用户的请求接受，以及数据的返回，为客户端提供应用程序的访问。

三层结构解释所谓三层体系结构，是在客户端与数据库之间加入了一个中间层，也叫组件层。

这里所说的三层体系，不是指物理上的三层，不是简单地放置三台机器就是三层体系结构，也不仅仅有B/S应用才是三层体系结构，三层是指逻辑上的三层，即使这三个层放置到一台机器上。

三层体系的应用程序将业务规则、数据访问、合法性校验等工作放到了中间层进行处理。

通常情况下，客户端不直接与数据库进行交互，而是通过COM/DCOM通讯与中间层建立连接，再经由中间层与数据库进行交换.开发人员可以将应用的商业逻辑放在中间层应用服务器上，把应用的业务逻辑与用户界面分开。

在保证客户端功能的前提下，为用户提供一个简洁的界面。

这意味着如果需要修改应用程序代码，只需要对中间层应用服务器进行修改，而不用修改成千上万的客户端应用程序。

从而使开发人员可以专注于应用系统核心业务逻辑的分析、设计和开发，简化了应用系统的开发、更新和升级工作。

Ⅰ.阅读单词——会意1．jam n．果酱；堵塞2．clay n．黏土；陶土3．weed n．杂草；野草v t.&v i.除杂草4．tablet n．平板电脑；便笺本；药片5．washroom n．洗手间；厕所6．bubble v i.起泡；沸腾7．tube n．管子；管状物8．circus n．马戏团9．jaw n．颌；下巴10．hut n．简陋的小房子(或棚、舍)11．fireplace n．壁炉12．saucer n．茶碟；杯托13．kettle n．(烧水用的)壶；水壶14．pan n．平底锅；烤盘15．jar n．罐子；坛子16．grill n．烤架；烤肉餐馆17．doorway n．门口；出入口；门道18．leftover adj.吃剩的；残留的n．吃剩的食物；遗留物19．handshake n．握手20．plug v t.封堵；补足n．堵塞物；插头；插座21．tune n．曲调；曲子v t.调音；调节；调频道22．contract v t.感染(疾病)；与……订立合同(或契约)n．合同；契约23．cardiac adj.心脏病的；心脏的24．circuit n．巡回；环形线路25．hypothetical adj.假设的；假定的Ⅱ.重点单词——记形1．parcel n．包裹v t.裹好；打包2．mail n．邮件；信件；邮政v t.邮寄；发电邮给3．secondary adj.中学的；次要的4．chorus n．合唱曲；合唱团v t.合唱；齐声说5．cotton n．棉布；棉花6．uniform n．校服；制服adj.一致的；统一的7．rigid adj.死板的；固执的8．shade v t.给……遮挡(光线)；加灯罩；把……涂暗n．阴凉处；灯罩；阴影部分9．wrinkle v t.&v i.(使脸上)起皱纹；皱起n．皱纹10．forehead n．额；前额11．housing n．住房；住宅12．platform n．平台；站台；舞台13．drag v t.拖；拽v t.&v i.缓慢而费力地移动14．privilege n．优惠待遇；特权15．resign v i.&v t.辞职；辞去16．lately ad v.最近；不久前；近来17．input n．情况；信息；投入；输入v t.输入18．grant v t.同意；准许n．拨款19．relay v t.转发；转播n．接力赛；接班的人20．criterion n．(pl.criteria)标准；准则；原则21．pray v i.&v t.企盼；祈祷Ⅲ.拓展单词——悉变1．dust n．沙土；灰尘v i.&v t.擦灰→dusty adj.布满灰尘的2．rubber n．橡皮；黑板擦；橡胶→rub v t.&v i.擦；摩擦；揉；搓3．chemist n．化学家；药剂师；药房→chemistry n．化学→chemical adj.化学的4．ripe adj.成熟的；时机成熟的→ripen v t.&v i.(使)成熟5．disabled adj.有残疾的；丧失能力的→disability n．缺陷；障碍→disable v t.使(某人)残废；使……无能6．deserve v t.值得；应得；应受→deserving adj.值得的；应得的7．consultation n．咨询；咨询会→consult v t.咨询；请教→consultant n．顾问8．stability n．稳定(性)；稳固(性)→stable adj.稳定的；牢固的→unstable adj.不稳定的1．consolidation/kənˌsɒl I'de Iʃn/n．巩固；加强→consolidate/kən'sɒl I de I t/v t.&v i.使加强；使巩固2．deprive/d I'pra I v/v t.剥夺；使丧失；使不能享有deprive...of sth剥夺；使丧失；使不能享有3．dumb/dʌm/adj.哑的；一时说不出话的；愚蠢的4．vague/ve Iɡ/adj.含糊的；不详细的；茫然的5．linger/'l Iŋɡə(r)/v i.继续存留；逗留；拖延6．unconsciously/ʌn'kɒnʃəsli/ad v.无意地；不知不觉地→conscious/'kɒnʃəs/adj.意识到的；神志清醒的；刻意的→consciousness/'kɒnʃəsnəs/n．清醒状态；意识；观念7．tangible/'tændʒəbl/adj.有形的；真实的；可触摸的；可感知的→intangible/I n'tændʒəbl/ adj.难以形容(或理解)的；不易度量的；无形的8．tense/tens/adj.令人紧张的；焦虑不安的；绷紧的9．grope/ɡrəʊp/v i.&v t.摸索；摸索着走grope one’s way toward(s)摸索着朝……走10．dash/dæʃ/v t.&v i.猛掷；猛击；猛冲n．猛冲；匆忙Ⅳ.背核心短语1．a chorus of齐声；异口同声2．not to mention更不用说；且不说3．take...for granted认为……是理所当然；对……不予重视4．relay to转达给……；转发给……5．pray that但愿6．be dying to do sth渴望做某事7．adapt to适应8．the other day前几天9．shake hands with sb和某人握手10．participate in参与；参加Ⅴ.悟经典句式1．It takes me only a few minutes to walk to school down a dusty track covered in weeds.(It takes sb some time to do sth做某事花费某人多长时间)沿着杂草丛生、尘土飞扬的小路，我几分钟就能走到学校。

SaaS系列介绍之⼗三：SaaS系统体系架构 1 系统体系架构设计 软件开发中系统体系架构决定了⼀个系统稳定性、健壮性、可扩展性、兼容性和可⽤性，它是系统的灵魂。

体系架构是架构师所关注的核⼼。

良好的体系架构是系统成功的开端，否则，再好的代码与设计也⽆济于事。

2 当前.net主要的开发框架简介 l Castle Castle是针对.NET平台的⼀个开源项⽬，从数据访问框架ORM到IOC容器，再到WEB层的MVC框架、AOP，基本包括了整个开发过程中的所有东西，为我们快速的构建企业级的应⽤程序提供了很好的服务。

其中关键的技术是ActiveRecord，Facilities，MonoRail等等。

优点：体现了ORM、IOC、ActiveRecorder思想，MVC框架。

不⾜：框架层次划分不太清楚。

l PetShop PetShop是微软⽤它来展⽰.Net企业系统开发的能⼒。

PetShop4.0，这个实例是Microsoft针对SQL Server 2005 以及Visual Studio 2005发布的。

其中运⽤了⼀些新的技术。

缓存数据与数据库的更新同步，新的Web控件，以及母版的应⽤，异步通讯，消息队列。

这些都是很实⽤的技术。

PetShop中⼤量运⽤了抽象⼯⼚模式，由于采⽤了Master Pages，Membership，以及Profile，表现层的编码量减少了25%，数据层的编码量减少了36%。

图1 PetShop4.0的体系架构 PetShop4.0在数据访问层(DAL)中，采⽤DAL Interface抽象出数据访问逻辑，并以DAL Factory作为数据访问层对象的⼯⼚模块。

对于DAL Interface⽽⾔，分别有⽀持MS-SQL的SQL Server DAL和⽀持Oracle的oracle DAL具体实现。

⽽Model模块则包含了数据实体对象。

可以看到，在数据访问层中，完全采⽤了“⾯向接⼝编程”思想。

谈谈你对工业4.0理解英语作文Industry 4.0, also known as the fourth industrial revolution, is a term that has been gaining momentum in recent years. It refers to the ongoing automation, data exchange, and technological advancements in manufacturing technologies. This concept represents a significant shiftin the way products are designed, manufactured, and distributed. In my understanding, Industry 4.0 is a transformative force that is reshaping the industrial landscape in profound ways.One of the key aspects of Industry 4.0 is the integration of cyber-physical systems into the manufacturing process. This involves the use of smart technologies such as sensors, actuators, and embedded systems to enable machines to communicate and collaborate with each other. This interconnectedness allows for greater flexibility and efficiency in production, as well as the ability to adapt to changing market demands in real-time. As a result, manufacturers are able to achieve higherlevels of productivity and customization, leading to a more competitive and agile industry.Furthermore, Industry 4.0 is characterized by the useof big data and analytics to drive decision-making and process optimization. With the proliferation of connected devices and the Internet of Things (IoT), manufacturers are able to gather vast amounts of data from their production lines and supply chains. This data can be analyzed toidentify patterns, trends, and inefficiencies, allowing for continuous improvement and cost reduction. By harnessingthe power of data, companies can make more informed decisions and gain a deeper understanding of their operations, leading to increased productivity and profitability.In addition to the technological advancements, Industry 4.0 also brings about changes in the workforce and the way work is performed. With the rise of automation and robotics, there is a growing concern about the potential impact on jobs and employment. While it is true that certain routine and repetitive tasks may be automated, Industry 4.0 alsocreates new opportunities for skilled workers in areas such as data analysis, programming, and maintenance of advanced machinery. Moreover, the collaboration between humans and machines can lead to safer and more efficient working environments, as well as the development of new job roles that require a combination of technical and soft skills.From a global perspective, Industry 4.0 has the potential to drive economic growth and competitiveness across industries and countries. By embracingdigitalization and innovation, companies can enhance their capabilities and create new business models that cater to evolving consumer needs. This can lead to therevitalization of traditional industries, as well as the emergence of new sectors and markets. Additionally, the adoption of Industry 4.0 technologies can contribute to sustainable development by reducing energy consumption, waste, and environmental impact, thus promoting a more responsible and eco-friendly industrial ecosystem.However, it is important to acknowledge that the transition to Industry 4.0 is not without its challenges.The implementation of new technologies requires significant investments in infrastructure, training, and cybersecurity, which may pose barriers for smaller enterprises and developing countries. Furthermore, there are concerns about data privacy, intellectual property rights, and the ethical implications of AI and machine learning. As such, it is crucial for policymakers, industry leaders, and stakeholders to collaborate and address these issues in a proactive and inclusive manner, ensuring that the benefits of Industry 4.0 are shared equitably and sustainably.In conclusion, Industry 4.0 represents a paradigm shift in the way we conceive and conduct industrial processes. It is a convergence of advanced technologies that have the potential to revolutionize the manufacturing sector, empower the workforce, and drive economic progress. While there are challenges and uncertainties ahead, the opportunities presented by Industry 4.0 are immense, and it is essential for all stakeholders to embrace this transformation and work together to harness its full potential for the benefit of society as a whole.。

选择性必修第四册UNIT 2 ICONIC ATTRACTIONSⅠ.阅读理解The most innovative libraries around the worldSome libraries use unique architecture to encourage visitors to explore the shelves and settle down with a new book，or use roving libraries to bring books to hard-to-reach populations.No matter how they achieve it，these novel libraries are keeping the magic of reading alive.Beach Library (Albena，Bulgaria)Reading a book on the beach is a classic，and in Bulgaria，one library encourages tourists to do just that.The white，weather resistant shelves lined up not far from the surf feature 6，000 books in 15 languages so every visitor can find the perfect read to enjoy while bathed in the sunshine.The Camel Library Service (North Eastern Province，Kenya)To fight low literacy rates in the desert of Kenya，the government created a movable library composed of nine camels bringing books to villages.The library travels four days a week serving the region.Currently the service focuses on children，but with more funding they plan to increase their reach both in distance and the titles they carry.Seikei University Library (Tokyo，Japan)Libraries are usually known for their quiet atmosphere，but this one encourages conversation.The library was designed with space-age，free-standing sound proofed pods (吊舱) to respect those who need uninterrupted study，while also being beneficial to other methods of learning；they serve as perfect spots for study groups and lively discussions.Macquarie University Library (Sydney，Australia)A surprising combination of cutting-edge and sustainable，this building，featuring a green roof，was made from recycled and designed to imitate the look of a eucalyptustree.It is also state of the art，using robots to bring requested books to the front desk.1.Who is more likely to visit the Camel Library?A.The government officials.B.Kids in the desert of Kenya.C.The local villagers in the region.D.Fundraisers of this service.2.What makes Seikei University Library different from other libraries?A.Its quiet reading atmosphere.B.Its unique design of space-age.C.Its freedom of lively discussions.D.Its weather resistant shelves.3.Which library is a good example of going green?A.Beach Library.B.The Camel Library Service.C.Seikei University Library.D.Macquarie University Library.I live in Xizhou in Yunnan Province，on the historic Tea Horse Road.I have to admit that when I first heard that Paul Salopek was going to walk the entire globe on his own two feet，I was blown away.I couldn’t imagine that there could be such an unusual person in the world.Last May，I met Paul.He told me that it was his first time in China.He talked to me with great excitement about the history，migrations，and discoveries in my region of China.He spoke of the Shu-Yandu Dao(the Sichuan to India trading route)，the Southern Silk Road，the travels of the 17th-century Chinese explorer Xu Xiake，the Tea Horse Road and the early 20th-century American botanist Joseph Rock.He also talked of Xuanzang.I decided to accompany Paul on his walk toward Yunnan.On September 28，2021，we set out.Our days were simple：walk，eat，sleep，and repeat.We woke up at sunrise，set off in high spirits，and rested at sunset，dragging ourselves into exhausted sleep. We met many people on the road.Some were curious，surrounding us and watching us；some gave us directions；some invited us into their home to take a rest；some spoke of the charm of their hometown.We met many beautiful souls，simple souls and warm souls.We were walking with our minds.Together，we were impressed by the biodiversity of the Gaoligong Mountains.As I walked on ancient paths through mountains，I seemed to hear the antique voices of past travelers urging me to be careful on the road.Looking back on the more than 200 miles I walked with Paul，I came to a realization.Walking for its own sake，while healthy and admirable，is only a small part of the benefit of moving with our feet.A deeper reward is rediscovering the world around us，shortening the distance between each other，and sharing each other’s cultures.4.How did the writer first respond to Paul’s travel plan?A.Scared.B.Puzzled.C.Disappointed.D.Surprised.5.What can we learn about Paul Salopek from Paragraph 2?A.He was a Western journalist.B.He had a knowledge of China.C.He came to China several times.D.He was Joseph Rock’s acquaintance.6.What does Paragraph 4 tell us about the writer and Paul?A.They honoured the ancestors.B.They set off in high spirits.C.They satisfied the locals’ curiosity.D.They built bonds with people.7.What is the main purpose of the writer’s writing the text?A.To share and reflect on a journey.B.To suggest a new way of travel.C.To advocate the protection of biodiversity.D.To introduce and promote Chinese culture.Starting in early January，15-year-old Abby Gagne spent some weekends walking through snow in the 330 acres of woods around her house ‘tapping’ trees.Abby’s family are sugar makers.For five generations，her family have collected sap from maple trees.They boil it down into the thick sweet syrup that North Americans love to apply on their pancakes.Abby’s dad，Jason，drills holes 1.5 inches deep into the trunks of maples in the woods.Sugar makers tap only older trees.These are usually at least 40 years old and 10 inches thick at chest height.They stick a tap into each hole，usually one per tree.Taps made of plastic are used for sap to flow through.They will come out at the end of the season，and the holes will return to health.Plastic tubes hook up to the taps and connect them to one another.The sap flows into a collection tank in the woods.From the collection tank，the Gagnes pump the sap into a machine to remove a lot of the sap’s water.Then it’s moved into an evaporator in a building called “sugar house”.The Gagnes make a fire out of maple wood chips.The fire heats the sap and boils it.When it reaches 219 degrees，the syrup is ready to be made.Syrup is poured into glass or plastic bottles.But 150 years ago，sugar makers used tin cans.These containers could prevent syrup from seeping out and allowed them to ship it far from home and helped maple become a big business.Sugar makers should thank native Americans for their knowledge.White settlers as early as 1，600s learned the craft from the Ojibwe and other tribes.Early native techniques were similar to those sugar makers use now except that they collected sap in bark bowls before boiling it over an open fire.Either way，the resulting maple syrup was，and is tasty.8.What did Abby help do on weekends?A.Collect maple branches.B.Drill holes in the woods.C.Boil the thick sweet syrup.D.Get sap from maple trees.9.What is Paragraph 3 mainly about?A.The need of wood chips.B.The makeup of maple trees.C.The process of making syrup.D.The technique of collecting sap.10.What does the underlined word “seeping” in Paragraph 4 probably mean?A.Breaking.B.Blowing.C.Looking.D.Leaking.11.What does the last paragraph imply?A.Syrup made by native Americans is the tastiest.B.Americans have a long history of making syrup.C.Today’s sugar makers often boil sap over an open fire.D.Native Americans’ techniques of making syrup are lost.Ⅱ.七选五(2024·深圳一模)For people who are planning a trip, a visit to a museum might not be the first thing they think of.After all, there are plenty of ways to appreciate the world’s civilization, gain exciting experiences and spend quality time with family and friends.__1__ Museums are where people learn something new, at every age! Are you interested in something specific? __2__ There, you will find yourself drawn in and inspired! Museums are a fantastic place to learn about a region’s history, scientific achievements, major cultural events, and of course, dinosaurs.They also design exhibitions related to visual arts, industrial innovations and anything that inspires an individual to learn about the past and create new paths to the future.__3__ They will surely be an exciting part of the educational experience with the main purpose to expose children to knowledge of various fields and expand their horizons.To achieve that, museums are working to create meaningful and engaging activities, interactive and knowledge-based.Museums support tourism.They are tourism promoters in small towns and largecities.Museums aren’t a burden on tax revenue (税收) or a separate concern from other city projects.__4__ Statistics show that museums support more than 726, 000 jobs in America.Museums shape communities.They have activities and exhibitions through which visitors can learn about local history.Museums are places where a shared heritage is celebrated and a collective identity is formed.They provide an interesting public space where people meet and talk to each other.__5__A.Museums bring out the best qualities in children.B.Museums often deliver kids-centered exhibitions.C.Instead, they generate funding and fuel employment.D.Then, visit a local museum to learn about that subject.E.Even shopping at the gift shop there is an opportunity for connection.F.On the contrary, they consume a small percentage of city funds annually.G.The fact, however, is that museums offer magical benefits in many ways.选择性必修第四册UNIT 2Ⅰ.【语篇解读】本文是应用文。

互联网与工业4.0的关系工业4.0是德国政府提出的一个高科技战略计划。

该项目由德国联邦教育及研究部和联邦经济技术部联合资助，投资预计达2亿欧元。

旨在提升制造业的智能化水平，建立具有适应性、资源效率及人因工程学的智慧工厂，在商业流程及价值流程中整合客户及商业伙伴。

其技术基础是网络实体系统及物联网。

“工业4.0”项目主要分为三大主题：一是“智能工厂”，重点研究智能化生产系统及过程，以及网络化分布式生产设施的实现；二是“智能生产”，主要涉及整个企业的生产物流管理、人机互动以及3D技术在工业生产过程中的应用等。

该计划将特别注重吸引中小企业参与，力图使中小企业成为新一代智能化生产技术的使用者和受益者，同时也成为先进工业生产技术的创造者和供应者；三是“智能物流”，主要通过互联网、物联网、物流网，整合物流资源，充分发挥现有物流资源供应方的效率，而需求方，则能够快速获得服务匹配，得到物流支持。

德国学术界和产业界认为，“工业4.0”概念即是以智能制造为主导的第四次工业革命，或革命性的生产方法。

该战略旨在通过充分利用信息通讯技术和网络空间虚拟系统—信息物理系统（Cyber-Physical System)[5] 相结合的手段，将制造业向智能化转型。

德国的工业4.0没有明确指出它与互联网有什么关系，但实质上工业4.0依然是互联网进化过程中的一个组成部分，通俗的说，就是无数个行业被互联网浪潮冲击后，互联网开始改造工业制造业了。

我们在2007年发表的互联网进化论论文中提出“互联网将向着与人类大脑高度相似的方向进化，它将具备自己的视觉、听觉、触觉、运动神经系统，也会拥有自己的记忆神经系统、中枢神经系统、自主神经系统，也就是是说，互联网正在形成一个互联网大脑”，并绘制了下列互联网未来结构图.1.物联网是互联网大脑的感觉神经系统，因为物联网重点突出了传感器感知的概念，同时它也具备网络线路传输，信息存储和处理，行业应用接口等功能。

PetShop4.0IntroductionPetShop4.0 is an advanced and comprehensive pet store management system designed to simplify the operations of pet stores. With its user-friendly interface, powerful functionality, and smart features, PetShop4.0 aims to enhance the overall efficiency and productivity of pet shop owners and staff.FeaturesPetShop4.0 offers a wide range of features that ensure smooth operations and streamlined management of a pet store. Let’s take a look at some of the key features:Inventory ManagementWith PetShop4.0, managing your pet store’s inventory is a breeze. The system allows you to easily add, update, and track your inventory of various pet products. You can manage the quantity, price, and supplier information for each item, ensuring that you never run out of stock.Sales and Point of Sale (POS)PetShop4.0 provides a powerful sales management module that enables you to efficiently process sales and track transactions. The system supports multiple payment options, including cash, credit cards, and mobile payment solutions. With the integrated POS system, you can swiftly complete transactions and generate detailed invoices for customers.Customer Relationship Management (CRM)Maintaining good customer relations is essential for any pet store. PetShop4.0 includes a CRM module that allows you to store and manage customer information. You can keep track of customers’ purchase history, personal preferences, and contact details. This information can be used to run targeted marketing campaigns, offer personalized recommendations, and improve overall customer satisfaction.Appointment SchedulingPetShop4.0 offers an appointment scheduling feature that enables pet owners to book grooming services, veterinary consultations, and other services in advance. The system keeps track of scheduled appointments, sends automated reminders to customers, and helps you manage your resources efficiently.Reporting and AnalyticsPetShop4.0 provides comprehensive reporting and analytics tools to help you gain insights int o your pet store’s performance. You can generate various reports, such as sales reports, inventory reports, and customer analytics. These reports can aid in making data-driven decisions and identifying areas for improvement.BenefitsImplementing PetShop4.0 can bring numerous benefits to your pet store: •Increased operational efficiency and productivity•Improved inventory management, reducing stockouts and overstocking•Enhanced customer satisfaction through personalized services and appointment scheduling•Streamlined sales processes, leading to faster transactions and improved cash flow•Better decision-making through access to real-time reports and analyticsSystem RequirementsTo make the most of PetShop4.0, the following system requirements are recommended:•Operating system: Windows 10, macOS, Linux•Processor: Intel Core i5 or equivalent•Memory: 8GB RAM•Storage: At least 100GB of free disk space•Display: Minimum resolution of 1366 x 768 pixels•Internet connection: Broadband connection for online features and updatesConclusionPetShop4.0 provides a comprehensive solution for pet store management, offering a range of features to improve efficiency and streamline operations. With its user-friendly interface and powerful functionality, PetShop4.0 is the ideal choice forpet store owners looking to take their business to the next level. Upgrade your pet store with PetShop4.0 and experience the benefits of a modern and smart management system.。

.NetPetshop详解.Net Petshop详解（⼀）： petshop概览和准备⼯作Youther前⾔Microsoft公司为了配合推出.NET战略,不仅发布了⼀系列的开发⼯具和开发平台,同时还推出了.NET平台上的⽰范应⽤.其中的.Net Petshop就是极好的⼀例.这个电⼦商务的开发应⽤是为了应对J2EE平台⽽出炉的,在J2EE平台上Sun公司也有⼀个完整的实例----J2EE Petstore,它体现J2EE的BluePrint。

⼆者解决的问题是⼀样的，功能也⼤同⼩异，界⾯也是如出⼀辙。

⾃然是公说公有礼，婆说婆有礼了，我们姑且不管双⽅怎么声称⾃⼰的东西好，但是从中也能⾜见.NET和J2EE平台上的完美杰作是怎么样的⼀个实现。

在这⾥，本⼈⽆意去争辩问题的胜负，也不打算去探讨J2EE是怎么样的解决⽅案和实现，只是作为纯粹的技术⾓度来管窥.NET平台上的.Net Petshop是如何⼀套的解决⽅案和实现的。

我想，最好的学习，莫过于钻研这样的⼀套⼤的经典的系统，从设计的思想到最好的编码，毫⽆疑问对于我们将是⼤有裨益的。

在这⾥，我将陆续的系列中逐步与⼤家⼀起探讨详解.Net Petshop的⽅⽅⾯⾯。

希望⼤家多多指正！.NET Pet Shop解决问题的描述.NET Pet Shop是⼀个电⼦商务的实例，是在Microsoft的.NET平台上的⼀个具体实现。

这个系统包含了B2C和B2B的实现。

在这⾥我主要将的是B2C实现的部分，B2B在.NET Pet Shop⾥⾯不是重点要解决的问题。

.NET Pet Shop是⼀个在线的宠物购物系统，⽤户可以通过各种能够连接到internet的终端（包括移动终端）进⾏在线购物（具体界⾯见图⼀）。

在这⾥，我将列出它将要实现的功能，也就是需求了：(1)⽤户帐号的管理功能：包括帐号创建，帐号登录，帐号维护；(2)产品浏览功能：类别浏览，具体产品浏览，详细信息，库存信息等等；(3)⽤户购物功能：添加购物，计算总价，下订单等等。