【发布时间】：2022-05-06 13:13:19
【问题描述】：
我需要使用 Coldfusion 使用 JSOUP（或任何其他有效方法）从网站中提取食谱的结构化数据。
数据结构如下：https://developers.google.com/search/docs/advanced/structured-data/recipe
我需要从页面中获取 JSON 并将其解析为可用的变量。
我尝试了许多不同的选择，但都没有成功。我不知道 JSOUP，并感谢您的帮助。
数据如下所示：
<script type=\"application/ld+json\">
{
\"@context\": \"https://schema.org/\",
\"@type\": \"Recipe\",
\"name\": \"Party Coffee Cake\",
\"image\": [
\"https://example.com/photos/1x1/photo.jpg\",
\"https://example.com/photos/4x3/photo.jpg\",
\"https://example.com/photos/16x9/photo.jpg\"
],
\"author\": {
\"@type\": \"Person\",
\"name\": \"Mary Stone\"
},
\"datePublished\": \"2018-03-10\",
\"description\": \"This coffee cake is awesome and perfect for parties.\",
\"prepTime\": \"PT20M\",
\"cookTime\": \"PT30M\",
\"totalTime\": \"PT50M\",
\"keywords\": \"cake for a party, coffee\",
\"recipeYield\": \"10\",
\"recipeCategory\": \"Dessert\",
\"recipeCuisine\": \"American\",
\"nutrition\": {
\"@type\": \"NutritionInformation\",
\"calories\": \"270 calories\"
},
\"recipeIngredient\": [
\"2 cups of flour\",
\"3/4 cup white sugar\",
\"2 teaspoons baking powder\",
\"1/2 teaspoon salt\",
\"1/2 cup butter\",
\"2 eggs\",
\"3/4 cup milk\"
],
\"recipeInstructions\": [
{
\"@type\": \"HowToStep\",
\"name\": \"Preheat\",
\"text\": \"Preheat the oven to 350 degrees F. Grease and flour a 9x9 inch pan.\",
\"url\": \"https://example.com/party-coffee-cake#step1\",
\"image\": \"https://example.com/photos/party-coffee-cake/step1.jpg\"
},
{
\"@type\": \"HowToStep\",
\"name\": \"Mix dry ingredients\",
\"text\": \"In a large bowl, combine flour, sugar, baking powder, and salt.\",
\"url\": \"https://example.com/party-coffee-cake#step2\",
\"image\": \"https://example.com/photos/party-coffee-cake/step2.jpg\"
},
{
\"@type\": \"HowToStep\",
\"name\": \"Add wet ingredients\",
\"text\": \"Mix in the butter, eggs, and milk.\",
\"url\": \"https://example.com/party-coffee-cake#step3\",
\"image\": \"https://example.com/photos/party-coffee-cake/step3.jpg\"
},
{
\"@type\": \"HowToStep\",
\"name\": \"Spread into pan\",
\"text\": \"Spread into the prepared pan.\",
\"url\": \"https://example.com/party-coffee-cake#step4\",
\"image\": \"https://example.com/photos/party-coffee-cake/step4.jpg\"
},
{
\"@type\": \"HowToStep\",
\"name\": \"Bake\",
\"text\": \"Bake for 30 to 35 minutes, or until firm.\",
\"url\": \"https://example.com/party-coffee-cake#step5\",
\"image\": \"https://example.com/photos/party-coffee-cake/step5.jpg\"
},
{
\"@type\": \"HowToStep\",
\"name\": \"Enjoy\",
\"text\": \"Allow to cool and enjoy.\",
\"url\": \"https://example.com/party-coffee-cake#step6\",
\"image\": \"https://example.com/photos/party-coffee-cake/step6.jpg\"
}
],
\"aggregateRating\": {
\"@type\": \"AggregateRating\",
\"ratingValue\": \"5\",
\"ratingCount\": \"18\"
},
\"video\": {
\"@type\": \"VideoObject\",
\"name\": \"How to make a Party Coffee Cake\",
\"description\": \"This is how you make a Party Coffee Cake.\",
\"thumbnailUrl\": [
\"https://example.com/photos/1x1/photo.jpg\",
\"https://example.com/photos/4x3/photo.jpg\",
\"https://example.com/photos/16x9/photo.jpg\"
],
\"contentUrl\": \"http://www.example.com/video123.mp4\",
\"embedUrl\": \"http://www.example.com/videoplayer?video=123\",
\"uploadDate\": \"2018-02-05T08:00:00+08:00\",
\"duration\": \"PT1M33S\",
\"interactionStatistic\": {
\"@type\": \"InteractionCounter\",
\"interactionType\": { \"@type\": \"WatchAction\" },
\"userInteractionCount\": 2347
},
\"expires\": \"2019-02-05T08:00:00+08:00\"
}
}
</script>
我尝试了以下方法：
<cfset source = \"https://www.allrecipes.com/recipe/216319/homemade-sweet-italian-sausage-mild-or-hot/\">
<cfhttp method=\"get\" url=\"#source#\" result=\"theresult\" useragent=\"Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/533.7 (KHTML, like Gecko) Chrome/5.0.391.0 Safari/533.7\">
<cfhttpparam type=\"header\" name=\"Accept-Encoding\" value=\"gzip,deflate,sdch\" >
<cfhttpparam type=\"header\" name=\"Proxy-Connection\" value=\"keep-alive\" >
<cfhttpparam type=\"header\" name=\"Accept\" value=\"application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5\">
<cfhttpparam type=\"header\" name=\"Accept-Language\" value=\"en-US,en;q=0.8\">
<cfhttpparam type=\"header\" name=\"Accept-Charset\" value=\"ISO-8859-1,utf-8;q=0.7,*;q=0.3\">
<cfhttpparam type=\"cookie\" name=\"some-cookie\" value=\"1\">
</cfhttp>
上面有他，我得到了网页。
然后我尝试提取 JSON：
<cfscript>
// Create the jsoup object
Jsoup = createObject(\"java\", \"org.jsoup.Jsoup\");
// HTML string
html = \"#theresult.filecontent#\";
// Parse the string
document = Jsoup.parse(html);
// Extract content
title = document.title();
tags = document.select(\"script[type=application/ld+json]\");
</cfscript>
<cfdump var=\"#tags#\">
<cfloop index=\"e\" array=\"#tags#\">
<cfoutput>
#e.attr(\"content\")#<br>
</cfoutput>
</cfloop>
但我什么也没得到。
-
你试过什么？？首先提供一些代码示例。
-
用我的尝试更新了我的问题。
-
您为什么不使用正则表达式的任何原因？您是否尝试过输出 tags.toString()？
-
从结果中提取 JSON 的最佳方法是隔离开始和结束
<script>标记之间的文本，并从该结果中使用deserializeJSON()将其分配给 CF 对象。这使得从结果结构中访问要使用的所有变量值变得非常容易。
标签： json web-scraping coldfusion jsoup