1 public class DBCPTest {
  2     /*
  3      * 使用BasicDataSource类,通过url,
  4     和diverClass,username,password,
  5     几个参数与数据库建立连接,从而返回一个DataSource连接池对象
  6     */
  7     public DataSource getDS() {
  8         BasicDataSource ds = new BasicDataSource();
  9         ds.setDriverClassName("com.mysql.jdbc.Driver");
 10         ds.setUsername("root");
 11         ds.setPassword("4230");
 12         ds.setUrl("jdbc:mysql://localhost:3306/jdbcdemo");
 13         return ds;
 14
 15     }
 16
 17     /*
 18      * 测试查询,通过上面返回的DataSource连接池对象的
 19     getConnection()方法创建一个Connection对象,其后步骤省略
 20     */
 21     @Test
 22     public void testDBCPTest() throws Exception {
 23
 24         Connection connec = getDS().getConnection();
 25         String sql = "SELECT * FROM student";
 26         PreparedStatement ps = connec.prepareStatement(sql);
 27         ResultSet rSet = ps.executeQuery();
 28         while (rSet.next()) {
 29             System.out.println(rSet.getLong(1) + "-" + rSet.getString(2) + "-" + rSet.getInt(3));
 30         }
 31         JdbcUtil.close(rSet, ps, connec);
 32     }
 33 }