<%@ 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>
<script type="text/javascript" >
function check() {
if(sumfrm.name==''&&sumfrm.price==''&&sumfrm.seq==''){
alert('전부 입력해주세요');
}else{
sumfrm.submit();
}
}
</script>
</head>
<body>
<form name="sumfrm" action="20210526_02_redirect.jsp" method="post" enctype="application/x-www-form-urlencoded">
상품명 <input type="text" name="name">
단가 <input type="number" name="price">
판매수량 <input type="number" name="seq">
<button type="button" onclick="check()">확인</button>
</form>
판매금액
<%
String name = (String)request.getAttribute("name");
int sum = 0;
if(request.getAttribute("sum")!=null){
sum = (int)request.getAttribute("sum");
}
%>
<%-- 상품명 <%= name%>
총 판매 금액 <%= sum %> --%>
총 판매 금액 <%= request.getParameter("sum") %>
상품명 <%= request.getParameter("name")%>
</body>
</html>
그냥 공부 한거 적는 벨로그 하하하핳ㅎ하하하핳하ㅏ