自定义 HttpStatus 代码到列不能为空

Question

当我有 java.sql.SQLIntegrityConstraintViolationException: Column 'xpto' cannot be null 时 return 在休息时 Api 的最佳 HttpStatus 代码是什么？

我有其他类型的异常处理程序，但没有空字段：

@ExceptionHandler({DataIntegrityViolationException.class})
protected ResponseEntity<Object> handleDataIntegrityViolation(DataIntegrityViolationException ex, WebRequest request) {
        Throwable cause = ex.getRootCause();
        if (cause instanceof SQLIntegrityConstraintViolationException) {
            SQLIntegrityConstraintViolationException consEx = (SQLIntegrityConstraintViolationException)cause;
            String message = "";
            String constraint = "";
            HttpStatus httpStatus = null;
            if (consEx.getMessage().contains("UNIQUE")) {
                message = "Cannot enter the same record twice";
                constraint = "DUPLICATED_RECORD";
                httpStatus = HttpStatus.CONFLICT;
            } else if (consEx.getMessage().contains("foreign key constraint")) {
                message = "Record still have reference from other table";
                constraint = "USED_RECORD";
                httpStatus = HttpStatus.UNPROCESSABLE_ENTITY;
            }

            return this.buildResponseEntity(new ApiError(httpStatus, message, consEx.getMessage(), constraint));
        } else {
            return ex.getCause() instanceof org.hibernate.exception.ConstraintViolationException ? this.buildResponseEntity(new ApiError(HttpStatus.CONFLICT, "Database error", ex)) : this.buildResponseEntity(new ApiError(HttpStatus.INTERNAL_SERVER_ERROR, ex));
        }
}

Answer 1

我已经对 column cannot be null 添加了处理并使用 400 - BAD_REQUEST 作为 http 状态代码：

    @ExceptionHandler(DataIntegrityViolationException.class)
    protected ResponseEntity<Object> handleDataIntegrityViolation(DataIntegrityViolationException ex,
                                                                  WebRequest request) {
        Throwable cause = ex.getRootCause();
        if (cause instanceof SQLIntegrityConstraintViolationException) {
            SQLIntegrityConstraintViolationException consEx = (SQLIntegrityConstraintViolationException) cause;
            String message = "";
            String constraint = "";
            HttpStatus httpStatus = null;
            if (consEx.getMessage().contains("UNIQUE")) {
                message = "Cannot enter the same record twice";
                constraint = "DUPLICATED_RECORD";
                httpStatus = HttpStatus.CONFLICT;
            } else if (consEx.getMessage().contains("foreign key constraint")) {
                message = "Record still have reference from other table";
                constraint = "USED_RECORD";
                httpStatus = HttpStatus.UNPROCESSABLE_ENTITY;
            } else if (consEx.getMessage().contains("cannot be null")){
                message = "Record cannot be null";
                constraint = "NULL_RECORD";
                httpStatus = BAD_REQUEST;
            }
            return buildResponseEntity(new ApiError(httpStatus, message, consEx.getMessage(), constraint));
        } else if (ex.getCause() instanceof ConstraintViolationException) {
            return buildResponseEntity(new ApiError(HttpStatus.CONFLICT, "Database error", ex));
        }
        return buildResponseEntity(new ApiError(HttpStatus.INTERNAL_SERVER_ERROR, ex));
}