jdbc工具类

 1 import java.sql.Connection;
 2 import java.sql.DriverManager;
 3 import java.sql.PreparedStatement;
 4 import java.sql.ResultSet;
 5 import java.sql.SQLException;
 6 import java.sql.Statement;
 7 
 8 
 9 
10 
11 
12 public class ConnectionUtil {
13     private static final String url="jdbc:oracle:thin:@localhost:1521:bigdata";//连接url
14     private static final String user="***";//用户名
15     private static final String password="***";//密码
16     public static Connection conn  = null;    
17     public static void getConnection(){
18         try {
19             Class.forName("oracle.jdbc.driver.OracleDriver");//加载oracle驱动
20             conn=DriverManager.getConnection(url, user, password);//取得数据库连接
21         } catch (ClassNotFoundException e) {
22             e.printStackTrace();
23         } catch (SQLException e) {
24             e.printStackTrace();
25         }
26         
27     }
28     public static void main(String[] args) {//测试
29 30         if(conn == null){
31             System.out.println("与oracle数据库连接失败！");
32         }else{
33             System.out.println("与oracle数据库连接成功！");
34         }
35     }
36 
37 }