Java连接Oracle数据库

java想要连接数据库首先要引入数据库驱动包

final static String drive = "oracle.jdbc.driver.OracleDriver";
final static String oracleurl = "jdbc:oracle:thin:@xx.xxx.xx.xx:1521:orcl";
final static String DBUSER="studio";
final static String password="studio";

public void excuteSearch(String str)
{
   Connection conn = null;//表示数据库连接
   PreparedStatement  stmt= null;//这里用PreparedStatement代替statement是防止Sql注入攻击
   Class.forName(drive);//使用class类来加载程序
   conn =DriverManager.getConnection(oracleurl,DBUSER,password);    //连接数据库
   //PreparedStatement接口要通过connection接口来进行实例化操作
   stmt = conn.prepareStatement(SqlStr);
   stmt.setString(1, str);
   ResultSet resultset=stmt.executeQuery();
      while(resultset.next())
        {
           cod=new cordinate(resultset.getString("JD"),resultset.getString("WD"));
           system.out.println("JD:"+cod.getJD()+"   WD:"+cod.getWD());
        }
            stmt.close();
            conn.close();//关闭数据库
}