SpringBoot文件导出功能笔记，不常用，记一下。
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| @RequestMapping(value = "/download", method = {RequestMethod.GET,RequestMethod.POST})
public ResponseEntity<ByteArrayResource> download(@RequestParam(name = "id", required = true) Long id){
String workNo = getWorkNo();
if (StringUtils.isEmpty(workNo)) {
return new ResponseEntity<>(null, HttpStatus.FORBIDDEN);
}
if (!checkCenterAuth(workNo)) {
return new ResponseEntity<>(null, HttpStatus.FORBIDDEN);
}
String fileName = "";
byte[] bytes = null;
try{
String filePath = xxxService.export2Excel(id);
Path path = Paths.get(filePath);
fileName = path.getFileName().toString();
bytes = Files.readAllBytes(path);
}catch(Exception e){
return new ResponseEntity<>(null, HttpStatus.INTERNAL_SERVER_ERROR);
}
ByteArrayResource bar = new ByteArrayResource(bytes);
return ResponseEntity.ok()
.contentType(MediaType.APPLICATION_OCTET_STREAM)
.header("Content-disposition", "attachment; filename="+fileName)
.body(bar);
}
|
注意ByteArrayResource有个坑 ，其getDescription()方法返回的并不是设置的description ，增加了描述：
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| @Override
public String getDescription() {
return "Byte array resource [" + this.description + "]";
}
|
放入json解析挂了，只能自己继承了。