package?org.dataconnection?;
import?java.sql.*?;
import?javax.sql.*?;
import?javax.naming.*?;
public?class?DataConnection
{
		private?Connection?conn?;
		private?String?sourceName?=?“java:comp/env/jdbc/school“?;
		public?DataConnection（）
		{
					try
					{
								Context??context?=new?InitialContext（）;
								DataSource?datasource?=?（DataSource）context.lookup（sourceName）;
								conn?=?datasource.getConnection（）;
					}
					catch（NamingException?e）
??????????{
??????????			e.printStackTrace（）;	
??????????}
??????????catch（SQLException?e）
	??			{
	??					e.printStackTrace（）;	
	??			}
		}
		public?Connection?getConnection（）
		{
					return?this.conn?;	
		}
		public?void?close（）
	??{
	??			try
	??			{
						??if（conn?!=?null）
??????????????????conn.close（）;	
	??			}
	??			catch（SQLException?e）
	??			{
	??					e.printStackTrace（）;	
	??			}
	??}
}

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

?????文件???????4810??2012-03-28?10:50??學業預警系統\allGrade.jsp

?????文件???????1403??2012-03-28?11:00??學業預警系統\allGrade_assistant.jsp

?????文件????????476??2012-03-28?10:51??學業預警系統\assistantIndex.jsp

?????文件????????900??2012-03-17?17:42??學業預警系統\DataConnection.java

?????文件????????574??2012-03-25?20:54??學業預警系統\deleteCourse.jsp

?????文件????????675??2012-03-25?20:54??學業預警系統\deleteGrade.jsp

?????文件????????579??2012-03-25?16:28??學業預警系統\deleteStudent.jsp

?????文件???????1507??2012-03-18?19:26??學業預警系統\Grade.class

?????文件???????1699??2012-03-18?19:26??學業預警系統\Grade.java

?????文件???????2969??2012-04-07?16:18??學業預警系統\index.html

?????文件???????4861??2012-04-07?16:25??學業預警系統\insertCourse.html

?????文件???????3511??2012-04-07?17:29??學業預警系統\insertCourse.jsp

?????文件???????4645??2012-04-07?16:30??學業預警系統\insertGrade.html

?????文件????????598??2012-03-25?22:02??學業預警系統\insertGrade.jsp

?????文件???????5407??2012-04-07?16:36??學業預警系統\insertStudent.html

?????文件???????3489??2012-04-07?17:32??學業預警系統\insertStudent.jsp

?????文件????????261??2012-03-18?19:52??學業預警系統\Ioperator.java

?????文件???????1747??2012-03-26?23:03??學業預警系統\loginCheck.jsp

?????文件?????????91??2012-03-17?23:17??學業預警系統\Manager.java

?????文件???????3345??2012-04-07?17:42??學業預警系統\managerIndex.jsp

?????文件??????53116??2012-03-23?15:20??學業預警系統\picture\508.jpg

?????文件?????????73??2012-03-23?16:49??學業預警系統\picture\back.gif

?????文件???????1454??2012-03-23?16:02??學業預警系統\picture\background.gif

?????文件?????340704??2012-03-29?17:11??學業預警系統\picture\head_a.png

????..A.SH.?????11776??2012-03-27?16:19??學業預警系統\picture\Thumbs.db

?????文件???????4136??2012-04-07?21:03??學業預警系統\selectCourse.jsp

?????文件???????5700??2012-04-07?21:04??學業預警系統\selectCourseById.jsp

?????文件???????4081??2012-04-07?21:11??學業預警系統\selectGrade.jsp

?????文件???????6550??2012-04-07?21:25??學業預警系統\selectStudent.jsp

?????文件???????1599??2012-03-18?22:24??學業預警系統\Student.java

............此處省略55個文件信息