<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<html>
<form action="index.jsp">
<body>
First INPUT:
<input name="firstinput" type="text" value=<%=request.getParameter( "firstinput") %>>
<br>
<input type="submit" value="Submit">
<% String first = request.getParameter("firstinput");
out.println(first); %>
</body>
</form>
</html>这是我的代码当放入输入税然后按钮单击其设置为税和打印税但当我税输入"税"然后值设置为输入框中的税,而打印正确的"税"我想设置输入框值也"税后"当我拿入输入"税后"点击请帮忙