public class JavaOracle {
public JavaOracle() {
}
public static void main(String[] args){
try {
try{
String connstr= "oracle.jdbc.driver.oracledriver";
Class.forName(connstr);
}
catch(java.lang.ClassNotFoundException e){
System.err.print(e.getMessage());
}
String url="jdbc:oracle:thin:@16.158.101.91:1521:lyl";
String username="system";
String password="lyl111";
Connection conn = DriverManager.getConnection(url,username,password);
Statement stmt=conn.createStatement(); ResultSet rs=stmt.executeQuery("select ename from user_info"); while(rs.next())
{
System.out.println(rs.getString(1));
}
conn.close();
}
catch(SQLException ex)
{
if(ex!=null)
{System.out.println(ex.getSQLState());
}
}
}
}
以上是我连接数据库的代码,每次都只能执行到Connection conn = DriverManager.getConnection(url,username,password);这句。请各位大哥帮我看下。谢谢
public JavaOracle() {
}
public static void main(String[] args){
try {
try{
String connstr= "oracle.jdbc.driver.oracledriver";
Class.forName(connstr);
}
catch(java.lang.ClassNotFoundException e){
System.err.print(e.getMessage());
}
String url="jdbc:oracle:thin:@16.158.101.91:1521:lyl";
String username="system";
String password="lyl111";
Connection conn = DriverManager.getConnection(url,username,password);
Statement stmt=conn.createStatement(); ResultSet rs=stmt.executeQuery("select ename from user_info"); while(rs.next())
{
System.out.println(rs.getString(1));
}
conn.close();
}
catch(SQLException ex)
{
if(ex!=null)
{System.out.println(ex.getSQLState());
}
}
}
}
以上是我连接数据库的代码,每次都只能执行到Connection conn = DriverManager.getConnection(url,username,password);这句。请各位大哥帮我看下。谢谢
{
ex.printStackTrace(); // 用这个把异常打印出来
}