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
 1 final static String drive = "oracle.jdbc.driver.OracleDriver";
 2 final static String oracleurl = "jdbc:oracle:thin:@xx.xxx.xx.xx:1521:orcl";
 3 final static String DBUSER="studio";
 4 final static String password="studio";
 5 
 6 public void excuteSearch(String str)
 7 {
 8    Connection conn = null;//表示数据库连接
 9    PreparedStatement  stmt= null;//这里用PreparedStatement代替statement是防止Sql注入攻击
10    Class.forName(drive);//使用class类来加载程序
11    conn =DriverManager.getConnection(oracleurl,DBUSER,password);    //连接数据库
12    //PreparedStatement接口要通过connection接口来进行实例化操作
13    stmt = conn.prepareStatement(SqlStr);
14    stmt.setString(1, str);
15    ResultSet resultset=stmt.executeQuery();
17       while(resultset.next())
18         {
19            cod=new cordinate(resultset.getString("JD"),resultset.getString("WD"));
20            system.out.println("JD:"+cod.getJD()+"   WD:"+cod.getWD());
21         }
22             stmt.close();
23             conn.close();//关闭数据库
24 }