cos.jar을 이용한 파일 업로드, 다운로드, 삭제

1. File Upload

MultipartRequest multi = null;
String savepath = request.getRealPath("/") + "WebContent/StyleUpload";

int limitSize = 15 * 1024 * 1024;

try {
multi = new MultipartRequest(request, savepath, limitSize, "euc-kr",

new DefaultFileRenamePolicy());
task = multi.getParameter("task");
String styleNo = multi.getParameter("styleNo");
String contents = multi.getParameter("contents");
String attachFile = multi.getFilesystemName("attachFile");


if (attachFile == null) {
attachFile = "";
} else {
byte[] byteStr = attachFile.getBytes();
int len = byteStr.length;
if (len > 50) {
File f = new File(savepath + "/" + attachFile);
if (f.isFile()) {
f.delete();
}
}
}

} catch (IOException ie) {
log.debug("첨부파일 용량 초과!!! 예외발생!!!");
throw ie;
}

2.File DownLoad

if(vo.getString("fileDown").equals("true")) {
request.setCharacterEncoding("EUC-KR");
String fileName = new String(request.getParameter("fileUrl").getBytes("ISO-8859-1"), "KSC5601");
String fileUrl = "WebContent/StyleUpload/" + fileName;
if(fileUrl == null) return;
boolean fileexists = true;
try {
ServletContext cxt = getServletConfig().getServletContext();
String file = cxt.getRealPath(fileUrl);
File fileEx = new File(file);
if(fileEx.exists()) {
response.setContentType("application/octet-stream");
response.setHeader("Content-Disposition","attachment; filename="+ java.net.URLEncoder.encode(fileName,"UTF-8"));
byte [] buffer = new byte[1024*15];
ServletOutputStream out = response.getOutputStream();
BufferedInputStream in = new BufferedInputStream(new FileInputStream(file));
BufferedOutputStream bout = new BufferedOutputStream(out);
int n = 0;
while((n=in.read(buffer, 0, 1024*15)) != -1) {
bout.write(buffer, 0, n);
bout.flush();
}
bout.close();
in.close();
} else {
fileexists = false;
}
} catch(Exception e) {
e.printStackTrace();
}
if(!fileexists) {
vo.put("message", MessageUtil.getMessage("MSG00009"));
}

}

3.File Delete

request.setCharacterEncoding("EUC-KR");
String fileName = new String(request.getParameter("fileUrl").getBytes("ISO-8859-1"), "KSC5601");
String fileUrl = "WebContent/StyleUpload/" + fileName;
if(fileUrl == null) return;
boolean fileexists = true;
try
{
ServletContext cxt = getServletConfig().getServletContext();
String file = cxt.getRealPath(fileUrl);
File fileEx = new File(file);
if(fileEx.exists())
{
fileEx.delete();
}
}
catch(Exception e)
{
e.printStackTrace();
}