报错信息:Attribute "xmlns" was already specified for element "web-app" 由于项目的重命名,出现了xmlns的重复赋值,这可能是eclipse自己设定的一种方式,重新为项目匹配合适的配置. <web-app xmlns:xsi=“http://www.w3.org/2001/XMLSchema-instance” xmlns=”http://java.sun.com/xml/ns/javae
https://www.jianshu.com/p/d1bb28cbb6a8 scrapy中负责下载文件的是class MyFilesPipeline(FilesPipeline)类 其中负责下载文件的方法是 def file_path(self, request, response=None, info=None): ## start of deprecation warning block (can be removed in the future) def _warn(): from sc