showsemesterscore.java

jsp+access简易选课系统

package student;
import java.io.*;
import java.text.*;
import java.util.*;
import java.sql.*; 
import java.net.*;
public class ShowSemesterScore{
    private String semester;
	private String SID;
	private ResultSet result;
	Connection con=null;
	
	public void setSemester(String semester){
		this.semester=semester;
	}
	
	public void setSID(String SID){
		this.SID=SID;
	}
	
	public ResultSet getResult(){
		try{
		    String ss=getClass().getResource("/").getPath();
            String ss1=ss.substring(1).replace("%20"," ");
            URL str=getClass().getResource("/");
		
		    String s=str.toString();
            String url0=s.substring(6);
            String url=url0.replace("%20"," ");
		
		    String constr="jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};"+
    "DBQ="+url+"/data/system";
    
			Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
	        con = DriverManager.getConnection(constr);
	        Statement smt = con.createStatement();
		    String sql="";
sql = "select Course.C_ID,Course.C_Name,Course.teacher,Student_Course.score from Course,Student_Course where Course.C_ID=Student_Course.C_ID and Course.semester=Student_Course.semester and Course.semester='"+semester+"' and Student_Course.S_ID='"+SID+"'";
		    result=smt.executeQuery(sql);
		    }
		   catch(SQLException e)
		   {
		   	result=null;
		   }
		   finally{
		   	return result;
		   }
	}
	
		 public void Close(){
		try{
			con.close();
		}
		catch(Exception e){
			
		}
	}
}