如何将本地html文件加载到Jsoup中？ [英] How do I load a local html file into Jsoup?
问题描述
我似乎无法使用Jsoup库加载本地html文件。或者至少它似乎没有认识到它。我对本地文件中的确切html进行了硬编码（如var'html'），当我切换到该文件而不是文件输入时，代码完美地工作。但是该文件在两种情况下均被读取。
I can't seem to load in a local html file, using the Jsoup library. Or at the very least it doesn't seem to be recognising it. I hardcoded the exact html in the local file (as the var 'html') and when I switch to that instead of a file input the code works perfectly. But the file is read on both occasions.
import java.io.File;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
public class FileHtmlParser{
public String input;
//constructor
public FileHtmlParser(String inputFile){input = inputFile;}
//methods
public FileHtmlParser execute(){
File file = new File(input);
System.out.println("The file can be read: " + file.canRead());
String html = "<html><head><title>First parse</title><meta>106</meta> <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" /></head>"
+ "<body><p>Parsed HTML into a doc.</p>" +
"" +
"<div id=\"navbar\">this is the div</div></body></html>";
Document doc = Jsoup.parseBodyFragment(input);
Elements content = doc.getElementsByTag("div");
if(content.hasText()){System.out.println("result is " + content.outerHtml());}
else System.out.println("nothing!");
return this;
}
}/*endOfClass*/
结果为：
Document doc = Jsoup.parseBodyFragment（html）
The file can be read: true
result is <div id="navbar">
this is the div
</div>
结果为：
Document doc = Jsoup.parseBodyFragment（input ）
Result when:
Document doc = Jsoup.parseBodyFragment(input)
The file can be read: true
nothing!
推荐答案
你的错误是假设 Jsoup.parseBodyFragment（）知道你是否传递一个包含html标记或包含html标记的字符串的文件名。
Your mistake is in assuming that Jsoup.parseBodyFragment() knows whether you're passing it a filename that contains html markup or a string that contains the html markup.
Jsoup.parseBodyFragment（input）预计 input 是一个 String 包含html标记，而不是文件名。
Jsoup.parseBodyFragment(input) expects that input is a String that contains html markup, not a filename.
要从文件中解析它，请使用 Jsoup.parse（File in，String charsetName ）方法改为：
To ask it to parse from a file use the Jsoup.parse(File in, String charsetName) method instead:
File in = new File(input);
Document doc = Jsoup.parse(in, null);
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