main函数也可连接数据库操作

PreparedStatement pstmt = null;
		Connection conn = null;
		ResultSet rs = null;
		try {
			Class.forName("com.mysql.jdbc.Driver").newInstance();
			conn = DriverManager.getConnection("jdbc:mysql://" + ip + ":3306/"
					+ dbname + "?useUnicode=true&characterEncoding=UTF-8",
					user, password);

			pstmt = conn
					.prepareStatement("select * from ***");// 0表示没有停
			// 1 停
			for (rs = pstmt.executeQuery(); rs.next();) {