CP30 ---DataSource连接池的创建过程

1 public DataSource getDs() throws Exception {
2         //创建连接池对象
3         ComboPooledDataSource cpds = new ComboPooledDataSource();
4         cpds.setDriverClass("com.mysql.jdbc.Driver");
5         cpds.setJdbcUrl("jdbc:mysql://localhost:3306/jdbcdemo");
6         cpds.setUser("root");
7         cpds.setPassword("4230");
8         return cpds;
9     }

 1 @Test
 2     public void testQuery() throws Exception {
 3         Connection connec = getDs().getConnection();
 4         String sql = "SELECT * FROM student";
 5         PreparedStatement ps = connec.prepareStatement(sql);
 6         ResultSet rSet = ps.executeQuery();
 7         while(rSet.next()){
 8             System.out.println(rSet.getLong(1) + "-" + rSet.getString(2) + "-" + rSet.getInt(3));
 9         }
10         DBCPUtil.close(rSet, ps, connec);
11     }