update

Comics/pipelines.py

@@ -13,6 +13,8 @@ from Comics.items import ComicItem
 from Comics.items import ImageItem
 from scrapy.pipelines.images import ImagesPipeline
 from scrapy.exporters import XmlItemExporter
+from itemadapter import ItemAdapter
+
 
 class ComicsPipeline:
     def open_spider(self,spider):
@@ -71,5 +73,28 @@ class ImgDownloadPipeline(ImagesPipeline):
                 img_path = os.path.join(settings.IMAGES_STORE,img['path'])
                 #解密图片
                 imageUtils.deScrambleImagesByPath(img_path)
-        XmlItemExporter()
         return item
+    
+class ComicInfoXmlPipeline:
+    
+    def open_spider(self, spider):
+        self.xml_exporter = {}
+
+    def close_spider(self, spider):
+        for exporter, xml_file in self.xml_exporter.values():
+            exporter.finish_exporting()
+            xml_file.close()
+
+    def _exporter_for_item(self, item):
+        adapter = ItemAdapter(item)
+        xml_file = open("ComicInfo.xml", "wb")
+        exporter = XmlItemExporter(xml_file)
+        exporter.start_exporting()
+        self.xml_exporter = (exporter, xml_file)
+        return self.xml_exporter
+
+    def process_item(self, item, spider):
+        exporter = self._exporter_for_item(item)
+        exporter.export_item(item)
+        return item
+

Comics/settings.py

@@ -82,6 +82,7 @@ ITEM_PIPELINES = {
     'Comics.pipelines.ComicsPipeline': 300,
     'Comics.pipelines.ImageParsePipeline': 400,
     'Comics.pipelines.ImgDownloadPipeline': 500,
+    'Comics.pipelines.ComicInfoXmlPipeline': 600,
 }
 
 # Enable and configure the AutoThrottle extension (disabled by default)