错误代码
@PostMapping("/upload")
public ResultMsg
algorithmFile(@RequestParam("file") MultipartFile file
) {
String fileName
= file
.getOriginalFilename();
String
[] fileNamePart
= fileName
.split("\\.");
String fileNameWithPath
= filePath
+ UUID
.randomUUID().toString(true) + "."
+ fileNamePart
[fileNamePart
.length
- 1];
try {
Files
.write(Paths
.get(fileNameWithPath
), file
.getBytes());
} catch (IOException e
) {
e
.printStackTrace();
}
return new ResultMsg(ResponseCodeEnum
.SUCCESS
.getIndex(), fileNameWithPath
, "上传成功");
}
正确代码
@PostMapping("/upload")
public ResultMsg
algorithmFile(@RequestParam("file") MultipartFile file
) {
String fileName
= file
.getOriginalFilename();
String
[] fileNamePart
= fileName
.split("\\.");
String fileNameWithPath
= filePath
+ UUID
.randomUUID().toString(true) + "." + fileNamePart
[fileNamePart
.length
-1];
try {
InputStream input
= file
.getInputStream();
FileOutputStream out
= new FileOutputStream(new File(fileNameWithPath
));
IOUtils
.copy(input
, out
);
out
.close();
} catch (IOException e1
) {
e1
.printStackTrace();
}
return new ResultMsg(ResponseCodeEnum
.SUCCESS
.getIndex(), fileNameWithPath
, "上传成功");
}
总结
错误代码中使用了，file.getBytes(),应该是该操作导致了内存溢出。具体区别和原因暂时没分析
