파일업로드
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>20230619</title>
</head>
<body>
<h3>업로드 할 파일을 선택하세여</h3>
<form action="fileUpload_do.jsp" method="post" enctype="multipart/form-data">
<input type="file" name="upload"> <br>
<input type="submit" value="업로드">
</form>
</body>
</html>
Upload_do.jsp
<%@page import="java.io.File"%>
<%@page import="com.oreilly.servlet.multipart.DefaultFileRenamePolicy"%>
<%@page import="com.oreilly.servlet.MultipartRequest"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>20230619</title>
</head>
<body>
<%
MultipartRequest multi = new MultipartRequest(request, //POST 방식으로 전송된 데이터를 담는 객체
application.getRealPath("/files"), //파일 저장 경로
100 * 1024 * 1024, // 100MB
"UTF-8", new DefaultFileRenamePolicy()// 동일 파일명 처리 방법
);
File file = multi.getFile("upload"); //파일객체 얻기 <input type="file" name="upload"> input타입 file name을 설정 한 것을 넣기!
if (file == null) {
out.print("파일업로드 오류...");
} else {
out.print("File Name=" + file.getName() + "<br>");
out.print("File Size=" + file.length());
}
%>
</body>
</html>
상품페이지
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>20230619</title>
</head>
<body>
<h1>상품등록</h1>
<form action="fileUpload_do1.jsp" method="post" enctype="multipart/form-data">
상품명: <input type="text" name="sname"> <br>
상품사진: <input type="file" name="images">
<input type="submit" value="전송">
</form>
</body>
</html>
fileUpload do1
<%@page import="java.io.File"%>
<%@page import="com.oreilly.servlet.multipart.DefaultFileRenamePolicy"%>
<%@page import="com.oreilly.servlet.MultipartRequest"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>20230619</title>
</head>
<body>
<%
MultipartRequest multi = new MultipartRequest(request, //POST 방식으로 전송된 데이터를 담는 객체
application.getRealPath("/files"), //파일 저장 경로
100 * 1024 * 1024, // 100MB
"UTF-8", new DefaultFileRenamePolicy()// 동일 파일명 처리 방법
);
String sname= multi.getParameter("sname");
out.print("sname="+ sname+"<br>");
File file = multi.getFile("images"); //파일객체 얻기 <input type="file" name="upload"> input타입 file name을 설정 한 것을 넣기!
if (file == null) {
out.print("파일업로드 오류...");
} else {
out.print("File Name=" + file.getName() + "<br>");
out.print("File Size=" + file.length());
}
%>
</body>
</html>
Servlet사용해서 만들기
package Servlet;
import java.io.File;
import java.io.IOException;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.oreilly.servlet.MultipartRequest;
import com.oreilly.servlet.multipart.DefaultFileRenamePolicy;
import Bean.BookBean;
/**
* Servlet implementation class BookregServlet
*/
@WebServlet("/BookregServlet")
public class BookregServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public BookregServlet() {
super();
// TODO Auto-generated constructor stub
}
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
ServletContext ctx = request.getServletContext(); // 먼저 얻어 내야한다.
MultipartRequest multi = new MultipartRequest(request, // POST 방식으로 전송된 데이터를 담는 객체
ctx.getRealPath("/files"), // 파일 저장 경로
100 * 1024 * 1024, // 100MB
"UTF-8", new DefaultFileRenamePolicy()// 동일 파일명 처리 방법
);
File file = multi.getFile("filename");
String title = multi.getParameter("title");
String author = multi.getParameter("author");
String filename = file.getName();
BookBean book = new BookBean();
book.setTitle(title);
book.setAuthor(author);
book.setFilename(filename);
request.setAttribute("book", book);
request.getRequestDispatcher("result.jsp").forward(request, response);
// ctx.setAttribute("test", "test_applicateion");
// response.sendRedirect("result.jsp");
}
}
BookBean(VO)
package Bean;
import lombok.Data;
import lombok.Getter;
import lombok.Setter;
@Setter
@Getter
@Data
public class BookBean {
private String title;
private String author;
private String filename;
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
public String getFilename() {
return filename;
}
public void setFilename(String filename) {
this.filename = filename;
}
}
regProd(form)
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>20230619 책 정보 등록</title>
</head>
<body>
<h1>책 정보 등록</h1>
<hr>
<form action="BookregServlet" method="post" enctype="multipart/form-data">
<input type="text" name="title"><br>
<input type="text" name="author"> <br>
<input type="file" name="filename"> <br>
<input type="submit" value="등록">
</form>
<script>
</script>
</body>
</html>
result.jsp
<%@ 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>
<%--
String test = (String)application.getAttribute("test");
<!--
application data(표현식) : <%= test %> <br>
//application data(EL) : ${applicationScope.test}<br>
-->
--%>
<table border="1">
<thead>
<tr>
<th>제목</th>
<th>저자</th>
<th>이미지</th>
</tr>
</thead>
<tr>
<td>${book.title }</td>
<td>${book.author }</td>
<td><img src="files/${book.filename}" alt="표지이미지" width=100px></td>
</tr>
</table>
</body>
</html>
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