java android java从字符串中获取html图像标签
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android java get html image tag from string
提问by Umakant Patil
Im trying to get HTML image tag url from the given string. There should be some regular expression to get it. But don't know how to do it. Can anyone help me on this.
我试图从给定的字符串中获取 HTML 图像标记 url。应该有一些正则表达式来获取它。但是不知道怎么做。谁可以帮我这个事。
e.g.
例如
I have string like this with <br> some HTML<b>tag</b>
with <img src="http://xyz.com/par.jpg" align="left"/> image tags in it.
how can get it ?
I want only http://xyz.com/par.jpgfrom the string
我只想要字符串中的http://xyz.com/par.jpg
采纳答案by Hyman
回答by Frohnzie
I use jsoup. It is pretty easy to use and lightweight. Some versions were not Java 1.5 compatible but it appears they fixed the issue.
我使用jsoup。它非常易于使用且重量轻。有些版本与 Java 1.5 不兼容，但似乎他们解决了这个问题。
String html = str;
Document doc = Jsoup.parse(html);
Elements pngs = doc.select("img[src$=.png]"); // img with src ending .png
回答by Mahdi Astanei
Frist of All Import jsoap:
导入 jsoap 之首：
compile group: 'org.jsoup', name: 'jsoup', version: '1.7.2'
Then you can Use this:
然后你可以使用这个：
private ArrayList pullLinks(String html) {
ArrayList links = new ArrayList();
Elements srcs = Jsoup.parse(html).select("[src]"); //get All tags containing "src"
for (int i = 0; i < srcs.size(); i++) {
links.add(srcs.get(i).attr("abs:src")); // get links of selected tags
}
return links;
}
回答by nicholas.hauschild
An XMLPullParsercan do this pretty easily. Although, if it is a trivially small string, it may be overkill.
一个XMLPullParser可以做到这一点很容易地。虽然，如果它是一个微不足道的小字符串，它可能会矫枉过正。
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
XmlPullParser xpp = factory.newPullParser();
xpp.setInput( new StringReader ( "<html>I have string like this with <br> some HTML<b>tag</b> with <img src=\"http://xyz.com/par.jpg\" align=\"left\"/> image tags in it. how can get it ?</html>" ) );
int eventType = xpp.getEventType();
while (eventType != XmlPullParser.END_DOCUMENT) {
if(eventType == XmlPullParser.START_TAG && "img".equals(xpp.getName()) {
//found an image start tag, extract the attribute 'src' from here...
}
eventType = xpp.next();
}
