Java反射获取字段值[重复]

Question

我正在尝试通过反射获取字段的值：

  for (Field field : entity.getClass().getDeclaredFields()) {

            log.info("[Field name] {} ", field);
            try {
                log.info("[Field value] {} ", field.get(entity));
            } catch (Exception e) {
                log.error(e.getMessage());
            }
        }
}

但我有这个错误：

 cannot access a member of class com.model.Dog with modifiers "private"

Answer 1

你忘了让这个字段可以访问：

for (Field field : entity.getClass().getDeclaredFields()) {
    log.info("[Field name] {} ", field);
    try {
        field.setAccessible(true);
        log.info("[Field value] {} ", field.get(entity));
    } catch (Exception e) {
        log.error(e.getMessage());
    }
}