큰뼈대만 기록해둡니다.
파일입출력의 핵심은 DB에는 파일이 저장된 경로와 저장되었을때의 파일명과 원본 파일명을 기록해 두는것이다.
그리고 출력시에 ViewResolver의 순서를 InternalResourceViewResolver가 먼저가 아닌 BeanNameViewResolver의 순서를 우위에 두게 해서 빈객체 @Component("FileDownloadView")가 View객체로 사용되게 하는 것이다.
pom.xml
<!-- MultipartHttpServletRequset -->
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.2.2</version>
</dependency>
MultipartHttpServletRequert를 실행하기 위해서 commons-io와 commons-fileupload를 maven에 추가합니다.
root-context.xml
<!-- File io -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="100000000" />
<property name="maxInMemorySize" value="100000000" />
</bean>
그리고 root-context에는 최대upload사이즈와 최대 메모리 사이즈를 지정해줍니다.
upLoad
@Component("AppUtils")
public class AppUtils {
private static final String filePath = "C:\\path";
public List<Map<String,Object>> parseInsertFileInfo(Map<String,Object> map, HttpServletRequest request) throws Exception{
MultipartHttpServletRequest multipartHttpServletRequest = (MultipartHttpServletRequest)request;
Iterator<String> iterator = multipartHttpServletRequest.getFileNames();
MultipartFile multipartFile = null;
String originalFileName = null;
String originalFileExtension = null;
String storedFileName = null;
List<Map<String,Object>> list = new ArrayList<Map<String,Object>>();
Map<String, Object> listMap = null;
String boardIdx = (String)map.get("IDX");
File file = new File(filePath);
if(file.exists() == false){
file.mkdirs();
}
while(iterator.hasNext()){
multipartFile = multipartHttpServletRequest.getFile(iterator.next());
if(multipartFile.isEmpty() == false){
originalFileName = multipartFile.getOriginalFilename();
originalFileExtension = originalFileName.substring(originalFileName.lastIndexOf("."));
Date dt = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddhhmmss");
storedFileName = originalFileName + String.format("(%s)", sdf.format(dt)) + originalFileExtension;
file = new File(filePath + storedFileName);
//File transfer
multipartFile.transferTo(file);
listMap = new HashMap<String,Object>();
listMap.put("BOARD_IDX", boardIdx);
listMap.put("ORIGINAL_FILE_NAME", originalFileName);
listMap.put("STORED_FILE_NAME", storedFileName);
listMap.put("FILE_SIZE", multipartFile.getSize());
list.add(listMap);
}
}
return list;
}
}
downLoad
public ModelAndView downloadFile(@RequestParam("path") String FileName) throws Exception{
String path = "C://dev//file";
String FileFullPath = path + "//" + FileName;
java.io.File file = new java.io.File(FileFullPath);
return new ModelAndView("FileDownloadView", "downloadFile", file );
}
@Component("FileDownloadView")
public class FileDownloadView extends AbstractView {
public FileDownloadView() {
// TODO Auto-generated constructor stub
}
@Override
protected void renderMergedOutputModel(Map<String, Object> map, HttpServletRequest req,
HttpServletResponse res) throws Exception {
// TODO Auto-generated method stub
try {
File file = (File)map.get("downloadFile");
res.setContentType(getContentType());
res.setContentLength((int) file.length());
res.setHeader("Content-Disposition", "attachment; filename=\""
+ java.net.URLEncoder.encode(file.getName(), "utf-8") + "\";");
res.setHeader("Content-Transfer-Encoding", "binary");
OutputStream out = res.getOutputStream();
FileInputStream fis = null;
fis = new FileInputStream(file);
FileCopyUtils.copy(fis, out);
fis.close();
out.flush();
}
catch (Exception e) {
e.printStackTrace();
}
}
}
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