用循环连续输出三个你好，字体从小变大
第一种：
1 <body> 2 ????<%! 3 ????//通过表达式方式调用实现 ?4 ????String HelloJSP1(){ 5 ????????String str = ""; 6 ????????for(int i = 5; i >= 1; i--){ 7 ????????????str += "<h" + i+">" +"你好~" +"<"+"/h"+i+">" ; 8 ????????} 9 ????????10 ????????return str;11 ????}12 ????%>13 ????14 ????<%=HelloJSP1() %>15 16 </body>第二种：
1 <body> 2 ????<%! 3 ?????4 ????// JSP内置out对象 ?通过调用脚本方式实现 5 ????void HelloJSP2(JspWriter out) throws Exception { 6 ?????????7 ????????for(int i = 5; i >= 1; i--){ 8 ????????????out.println( "<h" + i+">" +"你好~" +"<"+"/h"+i+">" ) ; 9 ????????}10 ????}11 ????%>12 ????13 ????14 ????<%HelloJSP2(out); %>15 </body>阶段小项目：
<%@ page language="java" contentType="text/html; charset=UTF-8" ???pageEncoding="UTF-8"%><!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert title here</title></head><body> ???<%! ???//通过表达式方式调用实现 ????String HelloJSP1(){ ???????String str = ""; ???????for(int i = 5; i >= 1; i--){ ???????????str += "<h" + i+">" +"你好~" +"<"+"/h"+i+">" ; ???????} ???????????????return str; ???} ???// JSP内置out对象 ?通过调用脚本方式实现 ???void HelloJSP2(JspWriter out) throws Exception { ???????????????for(int i = 5; i >= 1; i--){ ???????????out.println( "<h" + i+">" +"你好~" +"<"+"/h"+i+">" ) ; ???????} ???} ???%> ???????<%=HelloJSP1() %> ???<hr> ???<%HelloJSP2(out); %></body></html>JSP | 基础 | 两种方式循环输出
原文地址：https://www.cnblogs.com/jj81/p/9632749.html