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【正文】 關鍵詞： JSP MyEclipe mysql 投票 ABSTRACT With the fastly development of the inter and the inter application,Online Voting system have bee a more monly and usually in some newsleleasing site or other large portals voting system always stands a important and irreplaceable can integrate user and Web sites preferable,thus it can acheieve the purpse of the Inter to share the original manual management alone or simple standalone management, management faced a lot of information and can not be efficiently extracted from one of the important part, and make the appropriate judgments and processing. Vote only in accordance with management decisionmaking table data manually, wasting a lot of manpower and material resources at the same time can not do realtime monitoring, it is difficult to ensure data accuracy and timeliness. The system uses a mon puter language JSP modules bases on the operating system of windows XP, and use , mysql tools such as design and development。因此，本系統采用 SSH 框架 ，以操作系統 Windows 作為開發平臺，并且使用 、 mysql等工具 設計 開發 ； 并介紹了系統的調試、運行環境、系統功能、系統設計以及系統實 現。用戶應該全面考慮系統中的各個部分 ,這樣才能充分發揮其高效性。 //返回連接，此時并沒有關閉連接，只是放回了連接池 DestroyPool()。 //最近一次開始使用時間 public int useCount。在 TimeEvent（）函數中完成連接池的狀態檢驗工作， fillPool()時連接池至少保持最小連接數。 ConnectionPool 的基本屬性如下： m_ConnectionPoolSize 連接池中連接數量下限； m_ConnectionPoolMax 連接池中連接數量上限； m_ConnectionUseCount 一個連接的最大使用次數； m_ConnectionTimeout 一個連接的最長空閑時間； m_MaxConnections = 1 同一時間的最大連接數； m_timer 定時器。 一個結果集是表格行的排序列表，使用 JDBC 中的 接口表示。其中 getConnection()的參數分別是數據庫服務器的 IP 地址、端口號、庫名和登錄數據庫所需的賬號與密碼，示例如下： Connection conn= ( jdbc:oracle:thin:localhost:1521:demo,username,password)； SQL 語言由從一個關系數據庫中創建、表示和抽取數據的語句組成。很多關系數據庫管理系統都帶有 JDBC 驅動程序。而且對于 CGI 來說，每一個訪問就需要新增加一個進程來處理，進程不斷地建立和銷毀對于作為Web 服務器的計算機將是不小的負擔。 JavaScript 也可以用在服務器端，最因人注意的是 SUN ONE（以前的 iPla）、 IIS 和BroadVision 服務器。這是一項有用的功能，一般與 JSP 的功能（只在服務器端運行）并不發生重疊。幾乎所有的項目都會同時用到這兩種技術。 Web 開發人員可以將經理集中在表示層（ presentation layer）上。 (2) 能夠使用標準的網站開發工具。問題不在于技術的能力，而是二者在便利性、生產率和可維護性上的不同。其中，偽指令是指示 JSP 容器生成什么代 碼的命令；在表達式和 Script 中可以使用 9 個隱含對象；行為是創建、修改或使用對象的高層 JSP 元素，使用嚴格的 XML 語法編碼。如果 Servlet 實例并未運行，容器載入該 Servlet 類 ,并創建一個實例。同時 JSP 頁面還具有自身的優點，如需要時自動重新編譯和與 Web 開發工具具有更大的兼容性。 JSP 技術的特點 Java Server Page(JSP)是使用 Java 代碼動態生成 HTML 文檔的 Web 頁面摸板。 JDBC 驅動提供 JDBC API 的接口類。它主要由接口組成而不是集成類，被包含在 和 兩個包中。 WebAPI 的出現克服了速度問題，但是開發更加困難。 Web 數據庫系統充分發揮了 DBMS 高效的數據存儲與管理能力，以 B/S 模式為平臺，將客戶端統一為Web 瀏覽器，為用戶提供使用簡便、內容豐富的數據庫服務，已經成為 Inter 和 Intra 提 供的核心服務，為 Inter 上的電子商務提供技術支持。 / / is the frequency of use } Joined ConnectionObject object, operating in the ConnectionPool should only ConnectionObject, and other processes need is ConnectionObject the con attributes. So here then add as a class, as other processes to obtain and return the connection interface: CLASS Conn { GetConnection ()。 m_timer timer. These attributes define the connection pool with which status values for each valid connection. Selfmanaged connection pool, in fact, by periodically on the status of each connection and the number of connections carried out to determine the appropriate action. Here you can define ConnectionPool management needs to plete the basic interface, the concrete below: public class ConnectionPool implements TimerListener { public boolean initialize () / / initialize the connection pool public void destroy () / / destroy the connection pool public synchronized getConnection () / / get a connection public synchronized void close () / / Close a connection private synchronized void removeFromPool () / / to delete a connection from the connection pool private synchronized void fillPool () / / maintain the connection pool size public synchronized void TimerEvent () / / timer event handler } Through these interfaces, they can already pleted the basic management connection pool. In TimeEvent () function to plete the state inspection of the connection pool, fillPool () when the connection pool for at least the minimum number of connections. Because users want to save the state of each connection, so it requires a database connection object below: class ConnectionObject { public con。 m_ConnectionPoolMax maximum number of connections the connection pool。 3, connect to the database Driver manager keeps a list of registered drivers, call the getConnection () method get Connection object. One getConnection () the parameters are the database server IP address, port number, bank name and account number required for login and password database, the sample is as follows: Connection conn = ( jdbc: oracle: thin: localhost: 1521: demo, username, password)。 connect to the database and the corresponding actual treatment. JDBC driver provides JDBC API interface classes. JSP technique The Java Server Pages( JSP) is a kind of according to web of the script plait distance technique, similar carries the script language of Java in the server of the Netscape pany of server side JavaScript( SSJS) and the Active Server Pages( ASP) of the pares the SSJS and ASP to have better can expand sex, and it is no more exclusive than any factory or some one particular server of Web. Though the norm of JSP is to be draw up by the Sun pany of, any factory can carry out the JSP on own system. Features of JSP technology Java Server Page (JSP) is the use of Java code dynamically generated Web pages Moban HTML document. JSP running on the server side ponent, called the JSP container, it transformed into an equivalent JSP Java Servlet. Because of this, Servlet and JSP page is ultimately related. JSP pages have all the advantages of a Servlet, such as good performance and scalability, providing embedded on the HTTP session support. At the same time JSP page also has its own advantages, such as t