get和post的区别 （这个是在51cto 学堂中学到的，如有错误的、补充的还请指教，嘻嘻一起学习么。。。）
1、get 提交的信息都显示在地址栏中；
post提交的信息不显示在地址栏中；
2、get提交对于敏感信息数据不安全
post提交对于敏感信息安全；
3、get提交对于大数据不行，因为地址栏存储的信息是有限的；
post可提交大体积的数据；
4、get提交将信息封装到了请求信息的请求行中；
post提交将信息封装到了请求体中；
get和post在服务器上的一个区别
如果出现将中文提交到tomcat服务器，服务器默认会用iso8859-1进行解码，会出现乱码，通过iso8859-1进行编码，再用指定的中文表解码，即可；
但对于post提交方式提交的中文还有另一种解决办法，就是直接使用服务端一个对象request对象的setCharacterEncoding方法直接设置指定的中文代码表就可以将中文数据解析出来，这个方法只对请求中的数据进行解码。
和服务器端交互的三种方式：
1、地址栏输入url地址；get
2、超链接； get
3、表单； get 和 post
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