Jsoup-如何提取每个元素
[英]Jsoup - How to extract every elements
问题描述
I'm trying to get font information by using Jsoup. 
我正在尝试通过使用Jsoup获取字体信息。 For an example: 例如：
Below is my code: 下面是我的代码：
result = rtfToHtml(new StringReader(streamToString((InputStream)contents.getTransferData(dfRTF))));
// Example of text extraction from html
// Parse html
// String test = result.toString();
Document doc = Jsoup.parse(result);
// Select first bold text
String strdoc = doc.toString();
String words[] = strdoc.split("font-family");
Element firstBoldElt = doc.select("b").first();
Elements ele = doc.select("body");
String test = ele.toString();
Elements all = doc.select("b");
String boldtext = all.text();
By using the code my output will be like below: 通过使用代码，我的输出将如下所示：
"<body>
<p class="default">
<span style="color: #000000; font-size: 21pt; font-family: MyriadPro-Bold;">
<b>Hello World</b>
</span>
<span style="color: #000000; font-size: 21pt; font-family: MyriadPro-Bold;">, Testing</span>
<span style="color: #000000; font-size: 21pt; font-family: MyriadPro-Bold;">
<i><b>Font </b></i>
</span>
<span style="color: #000000; font-size: 21pt; font-family: MyriadPro-Bold;"> Style</span>
<span style="color: #000000; font-size: 21pt; font-family: MyriadPro-Bold;">
<i>Check</i>
</span>
<span style="color: #000000; font-size: 10pt; font-family: MyriadPro-Bold;"></span>
</p>
</body>"
I can extract first BOLD element or all BOLD element but how do I can all element similar like this. 我可以提取第一个BOLD元素或所有BOLD元素，但是如何将所有类似的元素提取出来。
<b>Hello World</b>
, Testing
<i><b>Font </b></i>
Style
<i>Check</i>
Any advice or references is highly appreciated. 任何建议或参考均受到高度赞赏。
EDITED EDITED
<body lang="en-MY" dir="LTR">
<p style="margin-bottom: 0in">
<font color="#000000"> <font face="ArialMT, serif"> <font size="2">
<span style="font-style: normal">
<span style="text-decoration: none">
<b>BOLD </b>
</span>
</span>
</font></font></font>
<font color="#000000"><font face="ArialMT, serif"><font size="2">
<span style="font-style: normal">
<span style="text-decoration: none">
<span style="font-weight: normal">
REGULAR
</span>
</span>
</span>
</font></font></font>
<font color="#000000"><font face="ArialMT, serif"><font size="2">
<span style="font-style: normal">
<u>
<span style="font-weight: normal">
UNDERLINED
</span>
</u>
</span>
</font></font></font>
<font color="#000000"><font face="ArialMT, serif"><font size="2">
<span style="font-style: normal">
<span style="text-decoration: none">
<span style="font-weight: normal">
</span>
</span>
</span>
</font></font></font>
<font color="#000000"><font face="ArialMT, serif"><font size="2">
<i>
<span style="text-decoration: none">
<span style="font-weight: normal">
ITALIC
</span>
</span>
</i>
</font></font></font>
<font color="#000000"><font face="ArialMT, serif"><font size="2">
<span style="font-style: normal">
<span style="text-decoration: none">
<span style="font-weight: normal">
</span>
</span>
</span>
</font></font></font>
<font color="#000000"><font face="ArialMT, serif"><font size="2">
<i>
<span style="text-decoration: none">
<b>BOLDITALIC</b>
</span>
</i></font>
</font></font></p>
</body>
2 个解决方案
解决方案1
2 已采纳 2013-11-07 09:10:45
If you only need to extract the text from a document, plus any <b> or <i> tags (as per your example), consider using the Whitelist class (see docs ): 如果只需要从文档中提取文本，再加上任何<b>或<i>标记（按照您的示例），请考虑使用Whitelist类（请参阅docs ）：
String html = "<body><p class='default'> <span style='color: #000000; font-size: 21pt; font-family: MyriadPro-Bold;'> <b>Hello World</b> </span> <span style='color: #000000; font-size: 21pt; font-family: MyriadPro-Bold;'> , Testing </span> <span style='color: #000000; font-size: 21pt; font-family: MyriadPro-Bold;'> <i><b>Font </b></i> </span> <span style='color: #000000; font-size: 21pt; font-family: MyriadPro-Bold;'> Style </span> <span style='color: #000000; font-size: 21pt; font-family: MyriadPro-Bold;'> <i>Check</i> </span> <span style='color: #000000; font-size: 10pt; font-family: MyriadPro-Bold;'> </span> </p></body>";
Whitelist wl = Whitelist.simpleText();
wl.addTags("b", "i"); // add additional tags here as necessary
String clean = Jsoup.clean(html, wl);
System.out.println(clean);
Which will output (as per your example): 将输出（根据您的示例）：
11-07 19:04:45.738: I/System.out(318): <b>Hello World</b> , Testing
11-07 19:04:45.738: I/System.out(318): <i><b>Font </b></i> Style
11-07 19:04:45.738: I/System.out(318): <i>Check</i>
Update: 更新：
ArrayList<String> elements = new ArrayList<String>();
Elements e = doc.select("span");
for (int i = 0; i < e.size(); i++) {
elements.add(e.get(i).html());
}
解决方案2
1 2013-11-07 09:02:47
You need to change your selector to the <p> tag like so: 您需要将选择器更改为<p>标记，如下所示：
Element all = doc.select("p").first();
Then you need to get all the children of that element. 然后，您需要获取该元素的所有子元素。
String myString = "";
for(Element item : all.children()) {
myString += item.text();
}
I am assuming you want the text inside the tags, and not the tags themselves. 我假设您想要标签内的文本，而不是标签本身。
Alternatively you could do. 或者，您可以这样做。
Elements all = doc.select("b");
all.addAll(doc.select("i"));
all.addAll(doc.select("span"));
String myString = all.text();
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