jdbc的连接例子

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import java.sql.*;
import java.util.*;

public class Conn {

private static String DRIVER="com.microsoft.jdbc.sqlserver.SQLServerDriver";

private String URL="jdbc:microsoft:sqlserver://10.254.100.149:1433;databasename=pubs";

// private String URL="jdbc:microsoft:sqlserver://10.254.100.218:1433;databasename=weather_db";


private String USERNAME="sa";

private String PASSWORD="";

static {
try {
Class.forName(DRIVER);
} catch (ClassNotFoundException e) {
e.printStackTrace();
}

}

public Connection getConn() throws SQLException {
Connection con = null;
try {
con = DriverManager.getConnection(URL,USERNAME, PASSWORD);
} catch (SQLException e) {
throw e;
}
return con;
}

public void print() {
System.out.println("this is Connection!!!!!!!!!!!");
}

public static void main(String[] args) {

Conn conn = new Conn();
Statement st = null;
ResultSet rs = null;
try {
Connection con = conn.getConn();
st=con.createStatement();
rs=st.executeQuery("select * from sysusers");
System.out.println("########################################");
if (rs.next()) {
                String s=rs.getString(1);
                System.out.println(s);
            }else{
            System.out.println("nothing to use!!!!!!!!!!!");
            }
// System.out.println((String)rs.getObject(0));
// System.out.println(rs.getString(2));
System.out.println("########################################");
System.out.println("it is ok!!!!!!!!!");
} catch (SQLException ex) {
ex.printStackTrace();
}finally{
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
try {
st.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}