codeysy多大（codeysys怎么写程序）

急求一篇英语文献

ASP.NET is a new generation of Web application development platform, it is a compiled based. NET development environment, which provides enterprise applications to generate the necessary services to all, based on. NET Framework generates, the whole framework are available Any ASP.NET application. You can use any common language runtime (CLR)-compliant language (including Visual Basic.NET, C # and JScript. NET) to create applications.

ASP.NET is part of Microsoft.NET, as a strategic product, not just Active Server Page (ASP) for the next version; It also provides a unified Web development model, including developers generate enterprise-class Web applications Take a variety of services. ASP.NET syntax to a large extent compatible with ASP, while also providing a new programming model and structure, creating a better scalability and stability of the application and provide better security. Through the existing ASP applications in ASP.NET gradually add features, enhance the ASP applications at any time.

The system uses ASP.NET (C # language) and ADO.NET technology development, the realization of the vote WEB management system, making the management of the vote in a more timely, efficient and improved efficiency. A typical three-tier system development model, that is: UI layer, Business Logic Tier and data layer, we will focus on the three levels of in-depth analysis.

At present, each group in the sector, the majority of the voting system adopted in the form of paper forms. In order to improve the efficiency of the office, but also in response to the call of the paperless office, design a set of online voting system to replace the existing paper forms of voting systems has become necessary. I am from the school system's current "Comments and appointing cadres", must abide by the existing work processes on the basis of the combination of the characteristics of WEB Technology Development

That system design according to C#language, the ASP.NET webpage designing platform and the database of SQL SERVER.The code that makes use of the ASP.NET platform separates a technique, letting the page code and the backstage code separate, promising the procedure code safety;The chain of the database connects a technique, the chain connects a database;The data binds to settle a technique, read data, let the web page and database organically the contact get up;Use the data of the database search language sentence with the saving process, carry out on the web page to carry on a management to the database;Combine to control a verification technique and handle a mechanism unusually, let and control the mistake contents in piece and don't influence the database operation, counteract the script set a technique, flick hint a frame open to;At whole structure up, the usage page the parameter deliver a technique, the set that lets the whole system integrity is together.So, the whole system had vitality, carrying out a person the machine dialogue-according to the operation of the customer, do a processing for correspond.

In recent years, as China's rapid economic development, with the support of the integrity management system seriously lagged behind, and increasingly powerful computers and information technology can effectively solve this problem. The system has information on the integrity of the students enter and automatic evaluation At the same time, for different users can provide the corresponding: manager of data management, the integrity of teachers to students to enter information, students and corporate officers to view. ASP.NET three-tier system based on the mode of development, the use of SQL Server 2000 database, using code language C # prepared. This paper elaborated on the three-tier system based on ASP.NET mode of university students integrity of electronic records and the overall quality of the evaluation system of design and functionality of the design, and the teachers to students on the Internet for appraisal, and other functions integrity, principle and system development, The system features and design programmes were introduced.

ASP.NET is a new generation of Web application development platform, it is a compiled based. NET development environment, which provides enterprise applications to generate the necessary services to all, based on. NET Framework generates, the whole framework are available Any ASP.NET application. You can use any common language runtime (CLR)-compliant language (including Visual Basic.NET, C # and JScript. NET) to create applications.

ASP.NET is part of Microsoft.NET, as a strategic product, not just Active Server Page (ASP) for the next version; It also provides a unified Web development model, including developers generate enterprise-class Web applications Take a variety of services. ASP.NET syntax to a large extent compatible with ASP, while also providing a new programming model and structure, creating a better scalability and stability of the application and provide better security. Through the existing ASP applications in ASP.NET gradually add features, enhance the ASP applications at any time.

The system uses ASP.NET (C # language) and ADO.NET technology development, the realization of the vote WEB management system, making the management of the vote in a more timely, efficient and improved efficiency. A typical three-tier system development model, that is: UI layer, Business Logic Tier and data layer, we will focus on the three levels of in-depth analysis.

At present, each group in the sector, the majority of the voting system adopted in the form of paper forms. In order to improve the efficiency of the office, but also in response to the call of the paperless office, design a set of online voting system to replace the existing paper forms of voting systems has become necessary. I am from the school system's current "Comments and appointing cadres", must abide by the existing work processes on the basis of the combination of the characteristics of WEB Technology Development

That system design according to C#language, the ASP.NET webpage designing platform and the database of SQL SERVER.The code that makes use of the ASP.NET platform separates a technique, letting the page code and the backstage code separate, promising the procedure code safety;The chain of the database connects a technique, the chain connects a database;The data binds to settle a technique, read data, let the web page and database organically the contact get up;Use the data of the database search language sentence with the saving process, carry out on the web page to carry on a management to the database;Combine to control a verification technique and handle a mechanism unusually, let and control the mistake contents in piece and don't influence the database operation, counteract the script set a technique, flick hint a frame open to;At whole structure up, the usage page the parameter deliver a technique, the set that lets the whole system integrity is together.So, the whole system had vitality, carrying out a person the machine dialogue-according to the operation of the customer, do a processing for correspond.

In recent years, as China's rapid economic development, with the support of the integrity management system seriously lagged behind, and increasingly powerful computers and information technology can effectively solve this problem. The system has information on the integrity of the students enter and automatic evaluation At the same time, for different users can provide the corresponding: manager of data management, the integrity of teachers to students to enter information, students and corporate officers to view. ASP.NET three-tier system based on the mode of development, the use of SQL Server 2000 database, using code language C # prepared. This paper elaborated on the three-tier system based on ASP.NET mode of university students integrity of electronic records and the overall quality of the evaluation system of design and functionality of the design, and the teachers to students on the Internet for appraisal, and other functions integrity, principle and system development, The system features and design programmes were introduced.

“Unknown column 'a' in 'where clause'”如何处理?

“Unknown column 'a' in 'where clause'”类似于Unknown column ‘xxx’ in ‘where clause’的问题。

单从字面理解，我们很容易得出列名不存在的结论，但是，很多时候起始并不是由于列名出错造成的。而是由于拼凑sql语句时对字符类型数据没有用引号引起来造成的。

例如：一个hql语句：

final String hql = "from ActiveCert ac where ac.issuerName="+issueName"；

设置issueName值为ysy，则错误如下：

Unknown column

ysy′ in ‘where clause’

sql中如果issueName是整型的倒不会出现什么错误，而如果sql中字符串类型必须要包含在引号内。

所以修改hql为：

final String hql = "from ActiveCert ac where ac.issuerName='"+issueName+"'";

则错误消失。

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