Java连接Oracle数据库

 1     package com.db;  
 2       
 3     import java.sql.Connection;  
 4     import java.sql.DriverManager;  
 5     import java.sql.PreparedStatement;  
 6     import java.sql.ResultSet;  
 7       
 8     public class DBConnection {  
 9         // 连接Oracle数据库  
10         public void OracleConnection() {  
11             Connection con = null;  
12             PreparedStatement pre = null;  
13             ResultSet rs = null;  
14       
15             try {  
16                 // 1. 加载Oracle驱动程序  
17                 Class.forName("oracle.jdbc.driver.OracleDriver");  
18                   
19                 // 2. 设置Oracle数据库基本信息  
20                 String url = "jdbc:oracle:thin:@127.0.0.1:1521:orcl";  
21                 String user = "scott";  
22                 String password = "goodluck";  
23       
24                 // 2. 获取连接  
25                 con = DriverManager.getConnection(url, user, password);  
26                 System.out.println("----> Connection Success！");  
27       
28                 // 3. 执行SQL语句  
29                 String sql = "SELECT * FROM EMP";  
30                 pre = con.prepareStatement(sql);  
31       
32                 // 4. 获取结果集  
33                 rs = pre.executeQuery();  
34                 while (rs.next()) {  
35                     System.out.println("编号：" + rs.getString("empno")   
36                                     + "；姓名：" + rs.getString("ename")  
37                                     + "; 工作:" + rs.getString("job")  
38                                     + "; 领导:" + rs.getString("mgr")  
39                                     + "; 雇佣日期:" + rs.getString("hiredate")  
40                                     + "; 工资:" + rs.getString("sal")  
41                                     + "; 奖金:" + rs.getString("comm")  
42                                     + "; 部门:" + rs.getString("deptno"));  
43                 }  
44             } catch (Exception e) {  
45                 e.printStackTrace();  
46             } finally {  
47                 try {  
48                     if (rs != null)  
49                         rs.close();  
50                     if (pre != null)  
51                         pre.close();  
52                     if (con != null)  
53                         con.close();  
54                     System.out.println("----> Connection End <-----");  
55                 } catch (Exception e) {  
56                     e.printStackTrace();  
57                 }  
58             }  
59         }  
60       
61         public static void main(String[] args) {  
62             DBConnection db = new DBConnection();  
63             db.OracleConnection();  
64         }  
65     }  

 

来源：https://www.cnblogs.com/seabird1979/p/seabrid1979.html