我使用以下postmapping来接收3个参数：

@PostMapping(value = "/createJobs",
         consumes="application/json",
         produces="application/json")
public @ResponseBody ResponseEntity<HttpStatus> createJobs(
        @RequestBody ArrayList<Long> sizes,
        @RequestBody Long accounts,
        @RequestBody Long productId
) {
    System.out.println(sizes + " " + accounts + " " + productId);
    try {
        jobService.createJobs(productId, sizes, accounts);
        return ResponseEntity.status(HttpStatus.OK).build();
    }
    catch (final Exception e) {
        LOGGER.error(e.getMessage());
        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).build();
    }
}

我用angular发送post请求。我发送的数据如下所示：

{
   "productId":715,
   "sizes":[3,5],
   "accounts":3
}

但在发送post请求后，我收到以下错误：

.w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Cannot deserialize instance of `java.util.ArrayList<java.lang.Long>` out of START_OBJECT token; nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.util.ArrayList<java.lang.Long>` out of START_OBJECT token
 at [Source: (PushbackInputStream); line: 1, column: 1]]