我正在创建一个REST服务,用于发送大型文件,例如ISO镜像,但目前出现了内存不足错误,以下是我的代码:
@RequestMapping(value = URIConstansts.GET_FILE, produces = { "application/json" }, method = RequestMethod.GET)
public @ResponseBody ResponseEntity getFile(@RequestParam(value="fileName", required=false) String fileName,HttpServletRequest request) throws IOException{
ResponseEntity respEntity = null;
byte[] reportBytes = null;
File result=new File("/home/XXX/XXX/XXX/dummyPath/"+fileName);
if(result.exists()){
InputStream inputStream = new FileInputStream("/home/XXX/XXX/XXX/dummyPath/"+fileName);
String type=result.toURL().openConnection().guessContentTypeFromName(fileName);
byte[]out=org.apache.commons.io.IOUtils.toByteArray(inputStream);
HttpHeaders responseHeaders = new HttpHeaders();
responseHeaders.add("content-disposition", "attachment; filename=" + fileName);
responseHeaders.add("Content-Type",type);
respEntity = new ResponseEntity(out, responseHeaders,HttpStatus.OK);
}else{
respEntity = new ResponseEntity ("File Not Found", HttpStatus.OK);
}
return respEntity;
}