用JSP来链接数据库(DBlei)

用jdbc-odbc桥来连接，不过这可是牺牲了速度来的。用jdbc-odbc桥的话，和连接access是一样的，先要设置一个数据源DNS，然后就用

 

  import java.sql.*;

public class Dblei {
    public Dblei() {
    }
    //直链接
    //private Stringurl= "jdbc:microsoft:sqlserver://localhost:1433;DataBaseName=UserInfo";
    //private String user = "sa";
    //private String password = "";
    public Connection getConn()
    {
        try {
            //Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver"); 直链接
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        } catch (ClassNotFoundException ex) {
           System.out.println(ex.getMessage());
        }
        try {
           // return DriverManager.getConnection(url, user, password);  直连接
           Connection conn= DriverManager.getConnection("jdbc:odbc:test");
           return conn;
       } catch (SQLException ex1) {
            return null;
        }

    }
    //关闭链接
    public void closeAll(ResultSet rs,PreparedStatement pstmt,Connection conn)
    {
        if(rs!=null)
        {
            try {
                rs.close();
            } catch (SQLException ex1) {
                System.out.println(ex1.getMessage());
            }
        }
        if(pstmt!=null)
        {
            try {
                pstmt.close();
            } catch (SQLException ex2) {
                System.out.println(ex2.getMessage());
            }
        }
        if(conn!=null)
        {
            try {
                conn.close();
            } catch (SQLException ex3) {
                System.out.println(ex3.getMessage());
            }
        }
    }
    //测试数据库是否连接？
    public static void main(String args[]){
        Dblei d=new Dblei();
        if(d.getConn()!=null){
        System.out.print("ok?");
        }
    }
}