Java Spring接收长打印不匹配的列表InputException

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();
    }
}

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]]

.w.s.m.s.DefaultHandlerExceptionResolver:已解决[org.springframework.http.converter.httpMessageNodeAbleException:JSON解析错误：无法反序列化'java.util.ArrayList'的实例超出起始\u对象标记；嵌套异常为com.fasterxml.jackson.databind.exc.MismatchedInputException:无法反序列化'java.util.ArrayList'的实例超出起始\u对象标记
在[源：（PushbackInputStream）；行：1，列：1]]

POST请求主体中的键应该是productId，而不是product

虽然可以方便地将每个请求键放在带有

@RequestBody

的方法参数上，但建议为每个请求模型创建一个通用类

e、 g.我的控制器：

ResponseEntity<TransactionLog> checkDiscount(HttpServletRequest request, 
                                             @RequestBody RequestCheckDiscount requestBody) {
    // Your code here
}

ResponseEntity<TransactionLog> checkDiscount(HttpServletRequest request, 
                                             @RequestBody RequestCheckDiscount requestBody) {
    // Your code here
}

public class RequestCheckDiscount {
    private String username;
    private int amount;
    private long time;

    // Standard getters and setters.
}