这是一个简单的但也是最为标准的网络客户端范例，不但有登陆设计，而且将用户输入转换为其他编码类型，避免的传送中被人截获数据盗取密码的危险。并且将用户所用手机信息版本全部发送给了服务端，有利于服务端人性化的因机而异。-This is a simple but it is also the most standard Web client examples, not only landing the design, but also user input is converted to other encoding types, to avoid the transmission of data has been intercepted by the risk of password theft. And to users using a mobile phone version of all information sent to the server and is conducive to human services due to client machine to another.