页面报错？JSTL使用不了？

liqihang 2018-04-23

源自：JSTL和EL表达式 2-6 迭代标签

收起

3回答

一叶知秋519 2018-04-23 16:59:18

foEach，E是大写的；

另外var="int"改为var="a"，尽量避免与关键字重名。修改以后注意修改其他用到的地方。

祝学习愉快！

收起回答

提问者 liqihang 2018-04-23 16:47:01

package com.imooc.servlet;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
* Servlet implementation class Jstl
*/
@WebServlet("/Jstl")
public class Jstl extends HttpServlet {
private static final long serialVersionUID = 1L;


protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
      int[] a=new int[101];
      for(int i=0,j=100;i<a.length;i++){
     a[i]=j;
     j++;
     System.out.println(a[i]);
      }
      request.setAttribute("array", a);
      request.getRequestDispatcher("/JSETjsp.jsp").forward(request, response);
}

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}

}

<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>JSTL练习</title>
</head>
<body>
<c:out value="既能被4整除又能被5整除的数据有："></c:out>
<c:foreach items="${array}" var="int">
<c:if test="${int%4==0&&int%5==0}">
<c:out value="${int}"></c:out>
</c:if>
</c:foreach>
</body>
</html>