在Java8中以可选方式抛出自定义异常

Question

我有这段代码要在找不到资源的地方抛出异常

Menu menu = menuService.findById(addMenuAmount.getMenuId())
                    .orElseThrow(com.tdk.web.exception.ResourceNotFoundException(“menu "  + 
                            addMenuAmount.getMenuId() + " not found "));

但是出现编译错误：

com.tdk.web.exception cannot be resolved to a type

Answer 1

尝试此操作并确保com.tdk.web.exception.ResourceNotFoundException可以访问

Menu menu = menuService.findById(addMenuAmount.getMenuId())
                    .orElseThrow(() -> new com.tdk.web.exception.ResourceNotFoundException("menu "  + 
                            addMenuAmount.getMenuId() + " not found "));

注意lambda () ->，并用引号"menu "。