[英]How to get data from page source using java and jsoup
How can I get the values $23,000,000 and $47,351,251 from the following page source? 如何从以下页面来源中获取$ 23,000,000和$ 47,351,251的值? I want to get only these values from the source code, but I'm not sure the best way to do it.
我只想从源代码中获取这些值,但是我不确定做到这一点的最佳方法。
<div class="txt-block">
<h4 class="inline">Budget:</h4>$23,000,000
<span class="attribute">(estimated)</span>
</div>
<div class="txt-block">
<h4 class="inline">Opening Weekend USA:</h4> $260,382,
<span class="attribute">20 December 2013</span>, <span class="attribute">Limited Release</span>
</div>
<div class="txt-block">
<h4 class="inline">Gross USA:</h4> $25,568,251
</div>
<div class="txt-block">
<h4 class="inline">Cumulative Worldwide Gross:</h4> $47,351,251
</div>
I tried like this: 我这样尝试过:
String url = "https://www.imdb.com/title/tt1798709";
Connection connection = Jsoup.connect(url);
Document document = connection.get();
Elements element = document.getElementsByClass("txt-block");
String gross = "";
String budget = "";
String budgetRegex = "Budget:.*";
String grossRegex = "Cumulative Worldwide Gross:.*";
for (Element e : element) {
if (e.text().matches(budgetRegex)) {
String text = e.text();
budget = StringUtils.substringBetween(text, "$", " ");
break;
} else {
budget = null;
}
}
for (Element e : element) {
if (e.text().matches(grossRegex)) {
String text = e.text();
gross = StringUtils.substringAfter(text, "$");
break;
} else {
gross = null;
}
}
System.out.println(gross + ", " + budget);
It's working, but is there a better solution? 它正在工作,但是有更好的解决方案吗?
Use ownText()
instead of substring and loop only once, not twice. 使用
ownText()
而不是子字符串,仅循环一次,而不是两次。 Try this: 尝试这个:
String url = "https://www.imdb.com/title/tt1798709";
Connection connection = Jsoup.connect(url);
Document document = connection.get();
Elements elements = document.select("div.txt-block");
String gross = "";
String budget = "";
final String budgetRegex = "Budget:";
final String grossRegex = "Cumulative Worldwide Gross:";
for (Element e : elements) {
final String h4Text = e.getElementsByTag("h4").first().text();
switch (h4Text) {
case budgetRegex:
budget = e.ownText();
break;
case grossRegex:
gross = e.ownText();
break;
}
if (!gross.isEmpty() && !budget.isEmpty()) { //this IF is optional, just added for performance
break;
}
}
System.out.println(gross + ", " + budget);
You can use jsoup pseudo selectors to do the job: 您可以使用jsoup伪选择器来完成这项工作:
Document document = Jsoup.parse(html);
String budget = document.select("div:contains(Budget:)").first().ownText();
String gross = document.select("div:contains(Cumulative Worldwide Gross:)").first().ownText();
System.out.println(gross + ", " + budget);
More about pseudo selector you can find here: https://jsoup.org/cookbook/extracting-data/selector-syntax 有关伪选择器的更多信息,请参见: https : //jsoup.org/cookbook/extracting-data/selector-syntax
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