1. | 或 `//tr[@class="odd"]|//tr[@class="even"]`  2. 在xpath中取數組的值，從1開始 例如 ： `// 表示任意路徑` ~~~ <tr class="even"> <td class="l square"> # //tr[@class="odd"]|//tr[@class="even"]/td[1] <a target="_blank" href="position_detail.php?id=33102&keywords=&tid=0&lid=0">SNG04-后臺開發工程師（上海）</a> <span class="hot"/> </td> <td>技術類</td> # //tr[@class="odd"]|//tr[@class="even"]/td[2] <td>1</td> # //tr[@class="odd"]|//tr[@class="even"]/td[3] <td>上海</td> # //tr[@class="odd"]|//tr[@class="even"]/td[4] <td>2017-09-27</td> # //tr[@class="odd"]|//tr[@class="even"]/td[5] </tr> <tr class="odd"> <td class="l square"> <a target="_blank" href="position_detail.php?id=33104&keywords=&tid=0&lid=0">21228-MMORPG運營分析（深圳）</a> </td> <td>產品/項目類</td> <td>1</td> <td>深圳</td> <td>2017-09-27</td> </tr> ~~~ ~~~ def parse(self, response): teacher_list = response.xpath('//tr[@class="odd"]|//tr[@class="even"]') for each in teacher_list: item = tecentItem() # 不加extract() 結果為xpath匹配對象 try: # 從1開始提取列表 position_name = each.xpath('./td[1]/a/text()').extract()[0] position_type = each.xpath('./td[2]/text()').extract()[0] # title location = each.xpath('./td[4]/text()').extract()[0] # info time = each.xpath('./td[5]/text()').extract()[0] detail = each.xpath('./td[1]/a/@href').extract()[0] item['position_type'] = position_type item['position_name'] = position_name item['location'] = location item['publish_time'] = time item['detail'] = "http://hr.tencent.com/" + detail yield item # 生成器 except: pass if self.offset < 2250: self.offset +=10 print("第幾頁" + self.url+str(self.offset)) else: os._exit(0) # 向引擎請求，引擎把請求發送給調度器，入隊列，出隊列，交給下載器下載 #從其實url開始，然后請求其他頁的數據，返回數據是生成器 yield scrapy.Request(url=self.url+str(self.offset),callback=self.parse) # callback 是指有響應，就交給parse方法 ~~~ *