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Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.10240" +#如url = "http://db.foodmate.net/yingyang/type_0%3A6%3A0_6.html" +#多页爬取 +food=[] +nutrient=[] +number=[] +address=[] +for i in range(19,20): #食物种类 + for j in range(0,50): #食物种类下各种食物 + url = "http://db.foodmate.net/yingyang/type_0%3A" + str(i) +"%3A" + str(j) +"_"+str(i) +".html"#网址 + with requests.request('GET',url,headers = {'User-agent':ua}) as res: + content = res.text #获取HTML的内容 + html = etree.HTML(content) #分析HTML，返回DOM根节点 + name = html.xpath("//*[@id='rightlist']/center/font/b/text()")#食物名称 + information_name = html.xpath( "//*[@id='rightlist']/div/div/text()") #营养素 + information_number = html.xpath( "//*[@id='rightlist']/div/text()") #含量 + for j in range(0,len(information_name)+100): + sh.cell(row,j+2).value=str(information_number[j]) + for m in range(0,len(name)): + sh.cell(row,26).value=str(url) + sh.cell(row,1).value=str(name[m]) + row+=1 + #print(1) + #food.append(name) + #nutrient.append(information_name) + #number.append(information_number) + #address.append(url) + +book.save('E:\CAUC\Computer\软件工程课程设计\油脂类.xlsx') +#print(food) +#print(nutrient) +#print(number) +#print(address)