웹에서는 페이지를 전환하기 위한 여러가지 방법을 제공합니다. 쓰임새에 따라 맞는 방법을 택해야하므로 전환의 방법이 무엇이 있고 어떻게 사용하는지 학습합니다.
페이지 전환의 방법
1. <form action=””> 과 <a href=””>
<a href="localhost:8090/sampleXX/action.jsp?age=23&name=parker">
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
String address = "Seoul";
%>
<form action="NewFile.jsp" method="post">
<input type="text" name="age" value="10">
<input type="text" name="address" value=<%=address%>>
<input type="submit">
</form>
</body>
</html>
2. javascript의 location.href=””
location.href = "/action.jsp?age="+age+"&name="+name;
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!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>Insert title here</title>
</head>
<body>
<%
String address = "Chung ju";
%>
<input type="text" name="age" value="15" id="age">
<input type="text" name="address" value=<%=address%> id="address">
<input type="button" id="hello" value="hello" onclick="hello()">
<script type="text/javascript">
function hello() {
var age = document.getElementById('age').value;
var address = document.getElementById('address').value;
// javascript 에서 sciptlet을 불러올 수 있다.
var str="<%=address%>";
location.href="NewFile.jsp?age="+age+"&address="+address;
}
</script>
</body>
</html>
3. java
3-1. forward
<%@page import="java.net.URLEncoder"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!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>Insert title here</title>
</head>
<body>
<%
String address = "Mars";
%>
<!-- pageContext : internal object -->
<%
pageContext.forward("NewFile.jsp?age=15&address=" + URLEncoder.encode(address, "utf-8"));
// 한글이 깨질때 URLEncoder.encode(address, "utf-8") 를 address 대신 사용한다.
%>
<form action="NewFile.jsp" method="post">
<input type="text" name="age" value="10">
<input type="text" name="address" value=<%=address%>>
<input type="submit">
</form>
</body>
</html>
3-2. sendRedirect
<%@page import="java.net.URLEncoder"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!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>Insert title here</title>
</head>
<body>
<%
String address = "Moon";
%>
<%
response.sendRedirect("NewFile.jsp?age=15&address=" + URLEncoder.encode(address, "utf-8"));
%>
</body>
</html>
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