파일을 바탕 화면에 저장

Question

메일에서 첨부 파일을 다운로드하는 것과 같은 장소에서 저장할 수 있도록 저장 창이 표시되기를 바랍니다. 스프링 컨트롤러 :

@RequestMapping(value="/getFile", method = RequestMethod.GET) 
     public ModelAndView getFile(HttpServletRequest request, HttpServletResponse response) { 

      ModelAndView mav = new ModelAndView(); 
      //logic to get the data from database 

} 

감사합니다.

Answer 1

첫 번째 대답

@RequestMapping(value = "/files/{file_name}", method = RequestMethod.GET) 
public void getFile(
    @PathVariable("file_name") String fileName, 
    HttpServletResponse response) { 
    try { 
     // get your file as InputStream 
     InputStream is = ...; 
     // copy it to response's OutputStream 
     IOUtils.copy(is, response.getOutputStream()); 
     response.flushBuffer(); 
    } catch (IOException ex) { 
     log.info("Error writing file to output stream. Filename was '" + fileName + "'"); 
     throw new RuntimeException("IOError writing file to output stream"); 
    } 

} 

두 번째 옵션

@RequestMapping(value = "/files/{fileName}", method = RequestMethod.GET) 
public HttpEntity<byte[]> createPdf(
       @PathVariable("fileName") String fileName) throws IOException { 

    byte[] documentBody = this.pdfFramework.createPdf(filename); 

    HttpHeaders header = new HttpHeaders(); 
    header.setContentType(new MediaType("application", "pdf")); 
    header.set("Content-Disposition", 
        "attachment; filename=" + fileName.replace(" ", "_")); 
    header.setContentLength(documentBody.length); 

    return new HttpEntity<byte[]>(documentBody, header); 
} 

@RequestMapping(value = "/files/{file_name}", method = RequestMethod.GET) 
@ResponseBody 
public FileSystemResource getFile(@PathVariable("file_name") String fileName) { 
    return new FileSystemResource(myService.getFileFor(fileName)); 
}