因为变量定义的问题哈!改为:
<% String name = "";
name=request.getParemeter("username");
%>
或者:
<% String name = null;
name=request.getParemeter("username");
%>
<% String name = "";
name=request.getParemeter("username");
%>
或者:
<% String name = null;
name=request.getParemeter("username");
%>
应该是:
<%
String name = request.getParameter("username");
%>
你的提示是:getParameter写错了。你看看是不是呀。
name=request.getParemeter("username");
^
^
request.getParameter("username");
^
看到e和a的区别?