UploadWriteForm.jsp / UploadWriteProc.jsp /
FileUpload.java / DownloadServlet.java / BoardUtils.java
==================== UploadWriteForm.jsp ======================
<%@ page language="java" contentType="text/html; charset=EUC-KR"
pageEncoding="EUC-KR"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=EUC-KR">
<title>Insert title here</title>
</head>
<body>
<form action="UploadWriteProc.jsp" method="post" enctype="multipart/form-data">
<input typw="text" name="age">
<input type="file" name="upFile">
<input type="submit" name = "button" value="Submit">
</form>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="upload.FileUpload,java.util.*" %>
<!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>
<%
FileUpload fileUpload = new FileUpload(request, "C:\\kjy\\workspace\\.metadata\\.plugins\\org.eclipse.wst.server.core\\tmp1\\wtpwebapps\\chapter13\\tmp\\", 1024*1024*5);
Map paramMap = fileUpload.getParamMap();
Map fileMap = fileUpload.getParamAfterUpload();
String paramValue = (String)paramMap.get("age");
String newFileName = (String)fileMap.get("upFile");
%>
<%=paramValue %><br>
<%=newFileName %>
</body>
</html>
============== FileUpload.java ==========================================
package upload;
import java.io.File;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
/**
* ex)
* FileUploader fileUploader = new FileUploader(request, "C:\\", 1024*1024*3);
* Map fileMap = fileUploader.getParamAfterUpload();
*
*/
public class FileUpload {
private HttpServletRequest request = null;
private File uploadDir = null;
private List items = null;
private Map paramMap = null;
private long requestLimit = 100*1024*1024; //한번에 업로드 용량은 기본 100메가
private long fileLimit = 5*1024*1024; //업로드 가능한 파일의 용량은 기본 5메가
public FileUpload(HttpServletRequest request, String uploadDir) throws Exception{
this.request = request;
this.uploadDir = new File(uploadDir);
init();
}
public FileUpload(HttpServletRequest request, File uploadDir) throws Exception{
this.request = request;
this.uploadDir = uploadDir;
init();
}
public FileUpload(HttpServletRequest request, String uploadDir, long fileLimit) throws Exception{
this.request = request;
this.uploadDir = new File(uploadDir);
this.fileLimit = fileLimit;
init();
}
public FileUpload(HttpServletRequest request, File uploadDir, long fileLimit) throws Exception{
this.request = request;
this.uploadDir = uploadDir;
this.fileLimit = fileLimit;
init();
}
//초기화 함수
private void init() throws Exception{
boolean isMultipart = ServletFileUpload.isMultipartContent(request);
if(!isMultipart){
throw new Exception("form의 enctype을 multipart/form-data로 하세요...");
}
//임시저장공간 생성
DiskFileItemFactory factory = new DiskFileItemFactory();
factory.setSizeThreshold(1024); //메모리에 저장할 최대 size
factory.setRepository(uploadDir); //임시 저장할 위치
//업로드 핸들러 생성
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setSizeMax(requestLimit); //Set overall request size constraint
items = upload.parseRequest(request); //Parse the request
//파람값들을 맵에 셋팅
processFormField(items);
}
//폼의 필드값을 map에 저장한다.
private void processFormField(List items) throws Exception{
paramMap = new HashMap();
Iterator iter = items.iterator();
while (iter.hasNext()) {
FileItem item = (FileItem) iter.next();
if (item.isFormField()) {
paramMap.put(item.getFieldName(), item.getString());
}
}
}
//하나의 파일사이즈를 체크한다.
private void chkFileLimit() throws Exception{
Iterator iter = items.iterator();
while (iter.hasNext()) {
FileItem item = (FileItem) iter.next();
if (!item.isFormField()) {
String fileName = new File(item.getName()).getName();
long fileSize = item.getSize();
if(fileName != null && !"".equals(fileName)){
if(fileLimit<fileSize){
throw new Exception(fileName+" 파일이 " + fileLimit/1024/1024 + "M를 초과하였습니다.\n");
}
}
}
}
}
/**
* request상의 모든파일을 업로드한다.<br>
* 파일명의 중복을 피하기 위해 중복될경우 파일명 뒤에 '0'을 붙여 업로드한다.<br>
* 업로드후 변경된 파일명과 param들을 map으로 리턴받아 처리한다.
* @throws Exception
*/
public Map getParamAfterUpload() throws Exception{
boolean writeToFile = true; //파일에 쓸것인지 구분 플래그
Iterator iter = items.iterator();
chkFileLimit(); //파일들의 사이즈 체크
while (iter.hasNext()) {
FileItem item = (FileItem) iter.next();
//Process a file upload
if (!item.isFormField()) {
String filePath = item.getName();
File file = new File(filePath);
String fileName = file.getName();
if(fileName != null && !"".equals(fileName)){
//파일업로드시...
if (writeToFile) {
String updFilePath = uploadDir+"\\"+fileName;
String newFilePath = getNewFilePath(updFilePath); //동일한 파일명으로 업로드 될수 있기때문에 파일명이 같을경우 파일명 뒤에 '0'을 붙여 업로드한다.
File newFile = new File(newFilePath);
paramMap.put(item.getFieldName(), newFile.getName()); //새로운 파일명을 리턴헤주기 위해 맵에 담는다.
item.write(newFile); //파일을 쓴다.
}
//파일업로드가 아닌 다른출력방식을 사용하고 싶을때...
/*
else {
InputStream uploadedStream = item.getInputStream();
uploadedStream.close();
}
*/
}
}
}
return paramMap;
}
//새로운 파일명을 생성한다.
private String getNewFilePath(String filePath){
File file = new File(filePath);
String sDir = file.getParent();
File dir = new File(sDir);
File[] files = dir.listFiles();
for(int i=0; i<files.length; i++){
String alreadyPath = files[i].getPath();
if(filePath.equals(alreadyPath)){
filePath = filePath + "0";
}
}
return filePath;
}
/**
* request상의 param들을 map으로 반환한다.
* @return Map
*/
public Map getParamMap(){
return paramMap;
}
}
=======================DownloadServlet.java================================
/*
<a href="/Centext/Download?fileName=<%=article.getFilename()%>"><%
=article.getFilename()%></a>
*/
package upload;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @web.servlet name="Download"
* display-name="File Download Servlet"
*
* @web.servlet-mapping url-pattern="/Download"
*/
public class DownloadServlet extends HttpServlet {
protected void performTask(
javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response)
throws Exception {
String fileName = request.getParameter("fileName");
try {
String rootPath = getServletConfig().getServletContext().getRealPath("/");
//String rootPath = request.getRealPath("/");
String filePath =
rootPath + "tmp" + File.separator + fileName;
java.io.File tempFile = new java.io.File(filePath);
fileName = fileName.substring(fileName.lastIndexOf("/") + 1);
fileName = BoardUtils.kscToasc(fileName);
int filesize = (int) tempFile.length();
String filetype = "application/x-zip-compressed";
//String fileExt = fileName.substring(fileName.lastIndexOf(".")+1);
String agentType = request.getHeader("Accept-Encoding");
try {
if (!tempFile.exists() || !tempFile.canRead()) {
PrintWriter out = response.getWriter();
out.println(
"<script>alert('File Not Found');history.back();</script>");
return;
}
} catch (Exception e) {
PrintWriter out = response.getWriter();
out.println(
"<script>alert('File Not Found');history.back();</script>");
return;
}
boolean flag = false;
if (agentType != null && agentType.indexOf("gzip") >= 0)
flag = true;
flag = false;
if (flag) {
response.setHeader("Content-Encoding", "gzip");
response.setHeader(
"Content-disposition",
"attachment;filename=" + fileName);
javax.servlet.ServletOutputStream servletoutputstream =
response.getOutputStream();
java.util.zip.GZIPOutputStream gzipoutputstream =
new java.util.zip.GZIPOutputStream(servletoutputstream);
dumpFile(tempFile, gzipoutputstream);
gzipoutputstream.close();
servletoutputstream.close();
} else {
response.setContentType("application/octet-stream");
response.setHeader(
"Content-disposition",
"attachment;filename=" + fileName);
javax.servlet.ServletOutputStream servletoutputstream1 =
response.getOutputStream();
dumpFile(tempFile, servletoutputstream1);
servletoutputstream1.flush();
servletoutputstream1.close();
}
} catch (Exception e) {
PrintWriter out = response.getWriter();
out.println(
"<script>alert('File Not Found');history.back();</script>");
return;
}
return;
}
private void dumpFile(File realFile, OutputStream outputstream) {
byte readByte[] = new byte[4096];
try {
BufferedInputStream bufferedinputstream =
new BufferedInputStream(new FileInputStream(realFile));
int i;
while ((i = bufferedinputstream.read(readByte, 0, 4096)) != -1)
outputstream.write(readByte, 0, i);
bufferedinputstream.close();
} catch (Exception _ex) {
}
}
/**
* @see javax.servlet.http.HttpServlet#doGet(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
doPost(req, resp);
}
/**
* @see javax.servlet.http.HttpServlet#doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
try {
performTask(req, resp);
} catch (Exception e) {
throw new ServletException(e.getMessage());
}
}
}
============================== BoardUtils.java =======================
package upload;
import java.io.UnsupportedEncodingException;
public class BoardUtils {
public static String convertHtmlBr(String comment) {
//**********************************************************************
if (comment == null)
return "";
int length = comment.length();
StringBuffer buffer = new StringBuffer();
for (int i = 0; i < length; i++) {
String tmp = comment.substring(i, i + 1);
if ("\r".compareTo(tmp) == 0) {
tmp = comment.substring(++i, i + 1);
if ("\n".compareTo(tmp) == 0)
buffer.append("<br>\r");
else
buffer.append("\r");
}
buffer.append(tmp);
}
return buffer.toString();
}
public static String ascToksc(String str, boolean isEncode)
throws UnsupportedEncodingException {
String result = str;
if (result == null || result == "")
return null;
return new String(result.getBytes("8859_1"), "KSC5601");
}
public static String kscToasc(String str)
throws UnsupportedEncodingException {
if (str == null || str == "")
return null;
return new String(str.getBytes("KSC5601"), "8859_1");
}
}
출처 : http://blog.naver.com/kwonhjae?Redirect=Log&logNo=30017924746
: 스트러츠 워크북(한빛 출판사) chapter4 예제 일부
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