BAE的数据库使用的mysql_应用引擎bae收费连接mysql数据库-优快云博客

本文介绍如何从HTTP请求头中提取MySQL连接参数，并使用这些参数建立数据库连接，执行SQL查询，以及展示查询结果。

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        从请求header中获取ip、端口、用户名和密码信息
	String host = request.getHeader("BAE_ENV_ADDR_SQL_IP");
	String port = request.getHeader("BAE_ENV_ADDR_SQL_PORT");
	String username = request.getHeader("BAE_ENV_AK");
	String password = request.getHeader("BAE_ENV_SK");
    
	String driverName = "com.mysql.jdbc.Driver";
	String dbUrl = "jdbc:mysql://";
	String serverName = host + ":" + port + "/";
 
        //从平台查询应用要使用的数据库名
	String databaseName = "NvZwtrQsgwQyjVrzdpVH";
	String connName = dbUrl + serverName + databaseName;
	out.print(connName+"    |username="+username+"|password=="+password+"<br/>");
	String sql = "select * from weixin";
 
	Connection connection = null;
	Statement stmt = null;
	ResultSet rs = null;
	try {
		Class.forName(driverName);
                //具体的数据库操作逻辑
		connection = DriverManager.getConnection(connName, username,
				password);
		stmt = connection.createStatement();
		rs = stmt.executeQuery(sql);
		String id = "", name = "";
      out.println("id    name<br/>");
		while (rs.next()) {
			id = rs.getString("id");
			name = rs.getString("count");
          out.println(id + "     " + name + "<br/>");
		}
	} catch (ClassNotFoundException ex) {
		// 异常处理逻辑
      throw ex;
	} catch (SQLException e) {
		// 异常处理逻辑
 		throw e;
	} finally {
		try {
			if (connection != null) {
				connection.close();
			}
			} catch (SQLException e) {
 				throw e;
		}
	}

http://developer.baidu.com/wiki/index.php?title=docs/cplat/rt/java/mysql