计算以x开头的字符串，并将其存储在Array Android Studio中

xcode_Dev 发表于 Dev

xcode_Dev

我在存储JSON数据的String中创建了一个正则表达式，可以在JSON数据中找到所有图像：

Pattern pattern = Pattern.compile("<a[^>]*>");

        Matcher matcher = pattern.matcher(contentString.toString());
        while(matcher.find()) {
            Log.i(TAG, "MATCHER : "+ matcher.group());
        }

返回值：

04-13 16:33:57.279    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a rel="prettyPhoto[gallery-113]" href='http://www.bundoransurfco.com/wp-content/uploads/2014/11/april-13.jpg'>
04-13 16:33:57.279    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a rel="prettyPhoto[gallery-113]" href='http://www.bundoransurfco.com/wp-content/uploads/2014/11/10501752_10152650053307000_6249740615573255728_n1.jpg'>
04-13 16:33:57.279    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a href="http://www.windguru.cz/int/index.php?sc=103244">
04-13 16:33:57.279    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a href="http://www.xcweather.co.uk/">
04-13 16:33:57.279    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a href="http://www.buoyweather.com/wxnav6.jsp?region=UK&program=nww3BW1&grb=nww3&latitude=55.0&longitude=-8.75&zone=0&units=e">
04-13 16:33:57.279    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a href="http://www.windguru.cz/int/index.php?sc=103244">
04-13 16:33:57.279    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a href="http://www.xcweather.co.uk/">
04-13 16:33:57.279    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a href="http://www.buoyweather.com/wxnav6.jsp?region=UK&program=nww3BW1&grb=nww3&latitude=55.0&longitude=-8.75&zone=0&units=e">
04-13 16:33:57.279    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a href="http://magicseaweed.com/Bundoran-Surf-Report/50/">
04-13 16:33:57.279    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a href="http://magicseaweed.com/UK-Ireland-MSW-Surf-Charts/1/">
04-13 16:33:57.279    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a href="http://www.marine.ie/Home/site-area/data-services/marine-forecasts/wave-forecasts">
04-13 16:33:57.279    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a href="http://magicseaweed.com/Bundoran-Surf-Report/50/">
04-13 16:33:57.279    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a href="http://magicseaweed.com/UK-Ireland-MSW-Surf-Charts/1/">
04-13 16:33:57.279    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a href="http://www.marine.ie/Home/site-area/data-services/marine-forecasts/wave-forecasts">
04-13 16:33:57.280    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a href="http://news.bbc.co.uk/weather/forecast/13000">
04-13 16:33:57.280    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a href="http://www.met.ie/">
04-13 16:33:57.280    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a href="http://news.bbc.co.uk/weather/forecast/13000">
04-13 16:33:57.280    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a href="http://www.met.ie/">
04-13 16:33:57.280    3642-3657/jardelcompany.bundoransurfco I/MainActivity﹕ MATCHER : <a href="http://www.irishtimes.com/weather/tides.html">

但是现在我想计算以“ <a rel="prettyPhoto[gallery-113]"”开头的链接数，并将其href链接存储在Array中...

你有什么主意吗？干杯!

普什莫

您不应该使用正则表达式来解析HTML，而是使用正确的解析器。造成这种情况的原因有很多，

属性的顺序（例如rel和href可以更改），这样您就可以看到像<a href="..." rel="">这样的元素，如果您的正则表达式可以描述的话，可以轻松地跳过这些元素<a rel="..." href="...">。
属性不需要被包围，"但是'这会带来跳过重要数据的额外风险。

我喜欢使用jsoup，因此这里是该库的示例：

Document doc = Jsoup.parse(htmlText);
Elements relLinks = doc.select("a[rel]");
//or if you want rel only with "prettyPhoto[gallery-113]" use
//Elements relLinks = doc.select("a[rel=prettyPhoto[gallery-113]]");//
System.out.println("number of `rel`: "+relLinks.size());
for (Element el : relLinks){
    System.out.println(el.attr("href"));
}

输出：

number of `rel`: 2
http://www.bundoransurfco.com/wp-content/uploads/2014/11/april-13.jpg
http://www.bundoransurfco.com/wp-content/uploads/2014/11/10501752_10152650053307000_6249740615573255728_n1.jpg

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