package?wyf.wyy;
import?javax.naming.*;
import?java.sql.*;
import?javax.sql.*;
import?java.util.*;
public?class?DB
{
	private?static?Connection?con=null;//聲明Connection引用
	private?static?Statement?stat=null;//聲明Statement引用
	private?static?ResultSet?rs=null;//聲明ResultSet引用
//*****************************數據庫連接和關閉操作*************************
	public?static?Connection?getCon（）{//得到數據庫連接的方法	
		try{			
			?Context?initial?=?new?InitialContext（）;//得到上下文引用
			?DataSource?ds?=?//得到DataSource引用
				????（DataSource）initial.lookup（“java:comp/env/jdbc/jiudian“）;
			?con?=?ds.getConnection（）;//得到數據庫連接
		}
		catch（Exception?e）
		{e.printStackTrace（）;}
		return?con;//返回數據庫連接
		
		/*try{
		Class.forName（“com.mysql.jdbc.Driver“）;
		String?url=“jdbc:mysql://localhost/test“;
		con?=?Dri

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????17138??2007-07-20?04:20??apache-tomcat-6.0.14\bin\bootstrap.jar

?????文件???????1606??2007-07-20?04:20??apache-tomcat-6.0.14\bin\catalina-tasks.xml

?????文件???????8901??2007-07-20?04:20??apache-tomcat-6.0.14\bin\catalina.bat

?????文件??????11989??2007-07-20?04:20??apache-tomcat-6.0.14\bin\catalina.sh

?????文件???????9341??2007-07-20?04:20??apache-tomcat-6.0.14\bin\commons-daemon.jar

?????文件????????506??2007-07-20?04:20??apache-tomcat-6.0.14\bin\cpappend.bat

?????文件???????1279??2007-07-20?04:20??apache-tomcat-6.0.14\bin\digest.bat

?????文件????????841??2007-07-20?04:20??apache-tomcat-6.0.14\bin\digest.sh

?????文件??????74398??2007-07-20?04:20??apache-tomcat-6.0.14\bin\jsvc.tar.gz

?????文件???????3986??2007-07-20?04:20??apache-tomcat-6.0.14\bin\service.bat

?????文件???????2471??2007-07-20?04:20??apache-tomcat-6.0.14\bin\setclasspath.bat

?????文件???????3230??2007-07-20?04:20??apache-tomcat-6.0.14\bin\setclasspath.sh

?????文件???????1271??2007-07-20?04:20??apache-tomcat-6.0.14\bin\shutdown.bat

?????文件????????780??2007-07-20?04:20??apache-tomcat-6.0.14\bin\shutdown.sh

?????文件???????1272??2007-07-20?04:20??apache-tomcat-6.0.14\bin\startup.bat

?????文件???????1173??2007-07-20?04:20??apache-tomcat-6.0.14\bin\startup.sh

?????文件??????17508??2007-07-20?04:20??apache-tomcat-6.0.14\bin\tomcat-juli.jar

?????文件?????185398??2007-07-20?04:20??apache-tomcat-6.0.14\bin\tomcat-native.tar.gz

?????文件??????57344??2007-07-20?04:20??apache-tomcat-6.0.14\bin\tomcat6.exe

?????文件??????98304??2007-07-20?04:20??apache-tomcat-6.0.14\bin\tomcat6w.exe

?????文件???????2366??2007-07-20?04:20??apache-tomcat-6.0.14\bin\tool-wrapper.bat

?????文件???????2508??2007-07-20?04:20??apache-tomcat-6.0.14\bin\tool-wrapper.sh

?????文件???????1276??2007-07-20?04:20??apache-tomcat-6.0.14\bin\version.bat

?????文件????????784??2007-07-20?04:20??apache-tomcat-6.0.14\bin\version.sh

?????文件???????6742??2007-07-20?04:20??apache-tomcat-6.0.14\conf\catalina.policy

?????文件???????2949??2007-07-20?04:20??apache-tomcat-6.0.14\conf\catalina.properties

?????文件????????585??2007-07-20?04:20??apache-tomcat-6.0.14\conf\context.xml

?????文件???????2938??2007-07-20?04:20??apache-tomcat-6.0.14\conf\logging.properties

?????文件???????6199??2011-03-02?08:49??apache-tomcat-6.0.14\conf\server.xml

?????文件?????????73??2011-04-02?15:28??apache-tomcat-6.0.14\conf\tomcat-users.xml

............此處省略868個文件信息