如何使用jsoup从具有多个html标签的html文件中提取正文内容
[英]How to extract body contents from html file with more than one html tags with jsoup
问题描述
I need to parse an html file, containing more than one html tags, with jsoup. 
我需要使用jsoup解析一个HTML文件，其中包含多个HTML标记。
I split the document into many html elements and I am able to extract some tags, like title 我将文档拆分为许多html元素，并且能够提取一些标签，例如title
Document doc = Jsoup.parse(file, "UTF-8");
Elements el = doc.getElementsByTag("html");
for (Element e : el) {
writer = new PrintWriter(output);
writer.println(e.select("title"));
writer.println(e.select("body"));
writer.close();
}
Output 产量
<title>titletext</title>
but it seems to ignore the existance of the body tag in every element. 但似乎忽略了body标签在每个元素中的存在。
Using Document.body() just spits all the contents of the body tags together. 使用Document.body()只会将body标签的所有内容吐在一起。
Since I can't get a Document from each Element to use body() on, how can I extract the body tag from each Element seperately? 由于无法从每个Element获取文档来使用body() ，因此如何分别从每个Element中提取body标签？
1 个解决方案
解决方案1
0 2016-11-28 14:23:28
Assumed you have such a file : 假设您有这样一个文件：
<!DOCTYPE html>
<html>
<head>
<title>Page Title 1</title>
</head>
<body>
<h1>This is a Heading</h1>
<p>This is a paragraph on page 1.</p>
</body>
</html>
<html>
<head>
<title>Page Title 2</title>
</head>
<body>
<h1>This is a Heading</h1>
<p>This is a paragraph on page 2.</p>
</body>
</html>
<html>
<head>
<title>Page Title 3</title>
</head>
<body>
<h1>This is a Heading</h1>
<p>This is a paragraph on page 3.</p>
</body>
</html>
you can split your file at the end of each html part (</html>) and parse each part separately. 您可以在每个html部分（</ html>）的末尾拆分文件，然后分别解析每个部分。 Example : 范例：
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
public class JsoupTest {
public static void main(String argv[]) throws IOException {
String multihtml = new String(Files.readAllBytes(Paths.get("C:\\users\\manna\\desktop\\test.html")));
String [] htmlParts = multihtml.split("(?<=</html>)");
Document doc;
for(String part : htmlParts){
doc = Jsoup.parse(part);
System.out.println("");
System.out.println("title : "+doc.title());
System.out.println("");
System.out.println(doc.body().outerHtml());
System.out.println("******************************************");
}
}
}
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