ASP.NET website news management system management system des

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2006年 6 月 10 日

ASP.NET website news management system management system design and realization
[ Abstract ] uses ASP.NET and ADO.The NET technology development website news management system management system, has realized the website news dynamic management, even more promptly caused to the information management, to be highly effective, enhanced the working efficiency. Meanwhile to the system development principle, the system function characteristic and the design proposal has carried on the introduction.
[ Key word ] ASP.NET ADO.NET news management database
Along with the Internet popularization, more and more many enterprises established own WWW website, the enterprise have been possible to demonstrate the product through the website, issued the newest tendency, carried on the exchange and the communication with the user, with partner establishment relation, as well as development electronic commerce and so on. News management system management system is constitutes the enterprise website an important constituent, it is shouldering the double-decked function, on the one hand may use for the dynamic issue related new product or the new development project, on the other hand may promptly to the customer announce the enterprise manages the achievement, the technology and the research and development progresses, recommends or the preferential benefit engineering project, the product and the service specially, thus the attraction customer, expands the customer group.
The traditional website news management way has two kinds, one is the static HTML page, renews when the information needs reto manufacture the page then on to pass on the page and the revision corresponding link, this way because the efficiency too is low not not multipurpose already. Two, based on ASP and the script language, the dynamic homepage and the database union, processes through the application procedure the news, this is a present more popular procedure. But because the ASP itself limitation enables the system to have some insurmountable flaws, but has adopted ASP.In the NET technology system performance had the very big improvement, it mainly displays in following several aspects:
After 1. because the ASP page each time opens the process which all must pass through translates first explained, therefore the page is opening repeatedly time speed not any promotion, but ASP.After the NET page only needs a time of translation not to need reto translate, is revised until this page or the Web application procedure restarts. This enabled when visited many times the speed to have the enormous promotion.
2. because ASP has not provided any output data for the content part, therefore when uses ASP composes the database page only can draw support from ADO the RecordSet object reading the record by the pen, but ASP.NET passes ADO.NET provides database part and so on DataGrid may directly with the database relation.
3. ASP.NET support application procedure real-time renewal. The manager does not need to switch off the network server or not to even need to stop the application procedure the movement being possible to renew the application document. The application procedure document never can lock, therefore even in procedure movement time the document may cover. After the file updating, the system can temperately transform to the new edition.
4. ASP.NET adopted "code-behind the" way compilation code to cause the code to change in the compilation, the structure is clearer, reduced the system development and the maintenance order of complexity and the expense.
1 system development principle
1.1 based on ASP.NET technology system structural model
ASP.The NET structure is three systems: UI level, service logic level and data level.
The UI level is responsible with the user interactive, the receive user's input and the data which transmits the server end presents for the customer.
The service logic level will be responsible for the request which will receive the browser to transmit and requested will bequeath the data level, at the same time requested the processing result will issue the browser. It by the Web form, XML the Web service and the module service is composed. Web form is ASP.The NET application procedure core is at, it is presents the data and the information foundation to the customer, also is the information and the data foundation which the response and the processing customer and the demonstration Web form produces alternately.
The data level passes ADO.The NET operation data provides the digital data service for business logic level, like the stored datum operating result, returns to the data retrieval result and so on.
1.2 ADO.NET visit database principle
Is connected with the database, ADO.NET has provided following 3 ways: Is connected through ODBC; Is connected through OLEDB; Direct and SQL Server is connected. 3 ways as a result of the application level difference, cause the efficiency 由低到高, independence from Gao Daodi. Regarding connected database data processing, also some 2 ways, namely one kind is isolates isomerism through DataSet the data pool, another kind is by flows the way reading (the DataReader way) from the data pool.
The traditional application procedure is through establishes first to the database connection, maintains the connection in the procedure entire movement process the way to design. ASP.NET has adopted the separation connection way construction of data. When browser to Web server request homepage, the server processes this request, and requested the homepage transmission for the browser, then the connection is separated, sends out the next request until the browser.
ADO.The NET another innovation was has introduced the data set (Dataset). A data set is in the memory provides the data relational graph the high speed buffer. The data set knows nothing about to the data pool, they may or through call in the data by the procedure from the data warehouse but to produce, the packing. No matter the data from where gain, the data set all is but is operated through the use similar procedure template, and it uses the same latent data buffer.
2 systems functional designs
2.1 systems function structures
This news management system management system may operating system platform move in Windows in 2,000 Server, the Web server is IIS, the database server is Microsoft SQL Server2000, Microsoft Visual Studio which the development kit uses.NET and DreamWeaver. Chart 2 produces the system the function structure drawing. Its work flow is: The user registers through the jurisdiction judgment, the average consumer only can glance over, reading and the inquiry news, the registration user besides may complete the average consumer the operation, but also may enter the news administration module to carry on the news input, the revision and the deletion operation. The registration user eliminates system administration supernumerary official only to be able the news which inputs to oneself to carry on the deletion operation.
2.2 systems function characteristics
(1) operates, the contact surface simply friendly: Controls the -like page layout completely, causes the news the input work to be simpler; Many options including the news category, the origin department and so on only need to click on the mouse to be possible to complete; Moreover, the track appears the prompt information also lets the user as necessary clear own operation situation.
(2) immediately obviously: To the news processing (including input, revision, deletion) immediately demonstrated in the main page corresponding column, achieves the "immediate issue, the immediate effective" function.
(3) function perfect: Including common website news management each aspect: The news input, the browsing, the deletion, the revision, the retrieval and so on each aspect, completely has realized the website to the immediate news management request.
(4) facilitates the transplant: In view of the different enterprise, only needs to make the revision to be possible slightly to develop suits this enterprise characteristic the website news management system management system!
3 systems detailed designs
The system main function is realizes through several functions modules. Concrete design process as follows:
(1) system registers: This module is responsible the user to divide into the average consumer and the registration user realizes the user jurisdiction management.
(2) news browsing: This module negative duties and responsibilities page lists the website all news information, including the title, the type, the origin department field and the issue date, each news title is made an ultra link, clicks on them to be able to jump transfers the page to carry on news reading.
(3) News reading: Clicks on the title link in other pages namely to enter the news reading page, each news detailed information is taken this time out, including the content, the title, the key words and so on, and defers to the relatively fixed form to lay aside in the page different region, all news use same page layout, only will be approximately various fields correspondence content is different, moreover, the page other positions, may the dynamic laying aside other parts, the criss-crossed station symbolize logo, link picture and so on page advertisement banner, may very easily realize the abundant and elegant reading effect like this.
(4) news inquiry: This module provided the news inquiry function, the input has treated the search the content and the designation classification information may fast find conforms to the condition news, and output inquiry result.
(5) News management: This module negative duties and responsibilities page displayed the registration user which registers once to issue also the deletion news information, the user has not been possible to carry on the deletion, the revision to this news. The non- news issue eliminates system administration supernumerary official not to have to this news processing jurisdiction, therefore the different user will enter this page to demonstrate the different content.
(6) news input and revision: The registration user inputs the content which a news needs, contains the title, the key words, the type, the origin department, the issue date and so on, at the same time from registers the module to obtain user, these information are read in the database to preserve. This module also is responsible to edit under the condition the renewal, by now, it will act according to the Title field value which obtained to the page to control an initialization.
Under registers the page take the system the compilation to produce the main event and the function as the example, explains this system the performance history.
//IsRegUserOk function: Whether the judgment user already did register and the password was whether correct
Public bool IsRegUserOk ()
{
String name=TextBoxName.Text.Trim ();
String pwd=TextBoxPassword.Text.Trim ();
//Establishment/Opens the database connection
SqlConnection conn=new SqlConnection ();
Conn.ConnectionString= "server= (local);Uid=sa;Pwd=;Database=jxdb ";
Conn.Open ();
//Establishes the sql string of character
String sql= "select * from reg where name='" name "'";
SqlDataReader dr;
SqlCommand cmd=new SqlCommand (sql,Conn);
Dr=cmd.ExecuteReader();
//Retention user registration or not information
Bool isRegUserExist=dr.Read ();
//Closes DataReader
Dr.Close ();
//Obtains a user password
String sqlBoth= "select * from reg where name='" name "'";
SqlBoth = "and pwd='" pwd "'";
SqlCommand cmdBoth=new SqlCommand (sqlBoth,Conn);
SqlDataReader drBoth;
DrBoth=cmdBoth.ExecuteReader ();
//At the same time retention user famous password existence information
Bool isBothExist=drBoth.Read ();
//Closes DataReader
DrBoth.Close ();
Conn.Close ();
//Whether the judgment user does register
If (!IsRegUserExist)
{
Response.Write ("<script>alert (' this user not yet registers! ')");
Return false;
}
//Judgment user name and password are whether consistent
else if(!isBothExist)
{
Response.Write("<script>alert('用户名和密码不一致,不能进入！')");
return false;
}
else
return true;
}
Finally produces behind the system the data storage plan:
Using Microsoft SQL Server 2,000 establishments databases and its memory process. Here produces two essential data sheets, one is the field which data sheet News contains includes: Serial number, name, title, key words, content, type, origin department and date

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