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mjgo_gitsrcmainjavaitncomcmmutilFileUtil.java
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hehihoho3@gmail.com 2025-12-15 7152e15 first commit UNIX
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package itn.com.cmm.util; import java.io.File; import java.io.FileInputStream; import java.io.OutputStream; import java.net.URLEncoder; import javax.servlet.http.HttpServletResponse; import org.apache.commons.lang3.StringUtils; /** * * @author : 이호영 * @fileName : FileUtil.java * @date : 2023.04.06 * @description : 파일 관련 유틸 * =========================================================== * DATE AUTHOR NOTE * ----------------------------------------------------------- * * 2023.04.06 이호영 최초 생성 * * * */ public final class FileUtil { /** * @methodName : downLoad * @author : 이호영 * @date : 2023.04.06 * @description : 파일 다운로드 * @param response * @param fileInfo * @param fileName * @throws Exception */ public static void downLoad(HttpServletResponse response, String fileInfo, String fileNameP) throws Exception { try { String path = fileInfo; // 경로에 접근할 때 역슬래시('\') 사용 File file = new File(path); String fileName = ""; if(StringUtils.isNotEmpty(fileNameP)) fileName = URLEncoder.encode(fileNameP,"UTF-8").replaceAll("\\+", "%20"); else fileName = file.getName(); response.setHeader("Content-Disposition", "attachment;filename=" + fileName); // 다운로드 되거나 로컬에 저장되는 용도로 쓰이는지를 알려주는 헤더 FileInputStream fileInputStream = new FileInputStream(path); // 파일 읽어오기 OutputStream out = response.getOutputStream(); int read = 0; byte[] buffer = new byte[1024]; while ((read = fileInputStream.read(buffer)) != -1) { // 1024바이트씩 계속 읽으면서 outputStream에 저장, -1이 나오면 더이상 읽을 파일이 없음 out.write(buffer, 0, read); } } catch (Exception e) { throw new Exception("download error"); } } }

          
        
    
    
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