首先你要保證自己的瀏覽器已經(jīng)安裝了WebScraper插件。
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接下來，直接上各種案例代碼。

1.抓取產(chǎn)品QA信息

有兩種方式：抓取所有頁面，抓取指定頁

a.Web scraper點擊翻頁，抓取所有頁數(shù)。缺點是有的競品可能幾百頁QA，沒必要抓那么多。
代碼：
{"_id":"amz-qa","startUrl":["https://www.amazon.com/ask/que ... ot%3B],"selectors":[{"id":"contents","parentSelectors":["_root","nextpage"],"type":"SelectorElement","selector":".a-section > div.a-spacing-base > div > div.a-col-right","multiple":true,"delay":null},{"id":"question","parentSelectors":["contents"],"type":"SelectorText","selector":".a-spacing-small div.a-col-right","multiple":false,"delay":0,"regex":""},{"id":"answer","parentSelectors":["contents"],"type":"SelectorText","selector":".a-col-right > span:nth-of-type(1)","multiple":false,"delay":0,"regex":""},{"id":"buyer","parentSelectors":["contents"],"type":"SelectorText","selector":"span.a-profile-name","multiple":false,"delay":0,"regex":""},{"id":"date","parentSelectors":["contents"],"type":"SelectorText","selector":"span.a-color-tertiary","multiple":false,"delay":0,"regex":""},{"id":"nextpage","parentSelectors":["_root","nextpage"],"type":"SelectorLink","selector":".a-last a","multiple":true,"delay":0}]}?
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按圖示，導入代碼
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抓取不同競品，最好更換ASIN?？梢栽谶@里編輯，后面的ASIN換成其他ASIN

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b.抓取指定頁面代碼：

導入代碼以后，如果想指定頁數(shù)，就打開編輯，更改網(wǎng)址后面的數(shù)字。
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如果爬取8頁，就改成[1-8]，依此類推。
代碼：
{"_id":"amz-qa2","startUrl":["https://www.amazon.com/ask/que ... 8QQP/[1-2]"],"selectors":[{"delay":null,"id":"contents","multiple":true,"parentSelectors":["_root"],"selector":".a-section > div.a-spacing-base > div > div.a-col-right","type":"SelectorElement"},{"delay":0,"id":"question","multiple":false,"parentSelectors":["contents"],"regex":"","selector":".a-spacing-small div.a-col-right","type":"SelectorText"},{"delay":0,"id":"answer","multiple":false,"parentSelectors":["contents"],"regex":"","selector":".a-col-right > span:nth-of-type(1)","type":"SelectorText"},{"delay":0,"id":"buyer","multiple":false,"parentSelectors":["contents"],"regex":"","selector":"span.a-profile-name","type":"SelectorText"},{"delay":0,"id":"date","multiple":false,"parentSelectors":["contents"],"regex":"","selector":"span.a-color-tertiary","type":"SelectorText"}]}
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抓取其他數(shù)據(jù)依舊是同樣的方式，導入代碼即可。
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2.抓取競品review

代碼：
{"_id":"review","startUrl":["https://www.amazon.com/Insulat ... ot%3B],"selectors":[{"clickElementSelector":".a-last a","clickElementUniquenessType":"uniqueCSSSelector","clickType":"clickMore","delay":3000,"discardInitialElements":"do-not-discard","id":"info","multiple":true,"parentSelectors":["_root"],"selector":".a-row div.celwidget","type":"SelectorElementClick"},{"delay":0,"id":"name","multiple":false,"parentSelectors":["info"],"regex":"","selector":"span.a-profile-name","type":"SelectorText"},{"delay":0,"id":"score","multiple":false,"parentSelectors":["info"],"regex":"","selector":"> div:nth-of-type(2)","type":"SelectorText"},{"delay":0,"id":"status","multiple":false,"parentSelectors":["info"],"regex":"","selector":"div.a-spacing-mini.review-data","type":"SelectorText"},{"delay":0,"id":"time","multiple":false,"parentSelectors":["info"],"regex":"","selector":"span.a-color-secondary","type":"SelectorText"},{"delay":0,"id":"content","multiple":false,"parentSelectors":["info"],"regex":"","selector":"div.a-spacing-small","type":"SelectorText"}]}?

3.抓取搜索頁關鍵詞前幾頁產(chǎn)品

無限翻頁代碼：
{"_id":"wxsearch","startUrl":["https://www.amazon.com/s%3Fk%3 ... ot%3B],"selectors":[{"delay":0,"id":"info","multiple":true,"parentSelectors":["_root","panination"],"selector":"div.s-expand-height","type":"SelectorElement"},{"delay":0,"id":"title","multiple":false,"parentSelectors":["info"],"selector":".a-size-mini a","type":"SelectorLink"},{"delay":0,"id":"score","multiple":false,"parentSelectors":["info"],"regex":"","selector":"i.a-icon-star-small","type":"SelectorText"},{"delay":0,"id":"reviews","multiple":false,"parentSelectors":["info"],"regex":"","selector":"span.a-size-base","type":"SelectorText"},{"delay":0,"id":"panination","multiple":true,"parentSelectors":["_root","panination"],"selector":".a-last a","type":"SelectorLink"},{"delay":0,"id":"price","multiple":false,"parentSelectors":["info"],"regex":"","selector":"[data-a-size='l'] span[aria-hidden]","type":"SelectorText"}]}?

指定頁數(shù)代碼：(前5頁)
{"_id":"search","startUrl":["https://www.amazon.com/s?k=lunch+box&page=[1-5]"],"selectors":[{"delay":0,"id":"info","multiple":true,"parentSelectors":["_root"],"selector":"div.s-expand-height","type":"SelectorElement"},{"delay":0,"id":"title","multiple":false,"parentSelectors":["info"],"selector":".a-size-mini a","type":"SelectorLink"},{"delay":0,"id":"score","multiple":false,"parentSelectors":["info"],"regex":"","selector":"i.a-icon-star-small","type":"SelectorText"},{"delay":0,"id":"reviews","multiple":false,"parentSelectors":["info"],"regex":"","selector":"span.a-size-base","type":"SelectorText"},{"delay":0,"id":"price","multiple":false,"parentSelectors":["info"],"regex":"","selector":"[data-a-size='l'] span[aria-hidden]","type":"SelectorText"}]}?

4.抓取榜單代碼：
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{"_id":"amazon-com-best-sellers","startUrl":["https://www.amazon.com/Best-Se ... pg%3D[1-8]"],"selectors":[{"id":"info","parentSelectors":["_root"],"type":"SelectorElement","selector":"div.zg-grid-general-faceout","multiple":true,"delay":null},{"id":"name","parentSelectors":["info"],"type":"SelectorText","selector":"div._cDEzb_p13n-sc-css-line-clamp-3_g3dy1","multiple":false,"delay":0,"regex":""},{"id":"score","parentSelectors":["info"],"type":"SelectorText","selector":"div.a-icon-row","multiple":false,"delay":0,"regex":""},{"id":"price","parentSelectors":["info"],"type":"SelectorText","selector":"div:nth-of-type(2)","multiple":false,"delay":0,"regex":""}]}?

如果數(shù)據(jù)為空，有兩種情況：

1.需要更改網(wǎng)址

2.類目結構不一樣，需要重新選擇爬蟲結構
這種情況，可按照下面的圖示指引，重新選擇數(shù)據(jù)。
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相信耐心看完的同學，也能熟練掌握webscraper爬蟲了。
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