用于获取特定数据的正则表达式 [英] Regular expression for getting specific data
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问题描述
我有一个可以作为文本框阅读的文件，我想只获得
I have a file that can be read as a text box, I would like to get only the data available after
start =n = and end =n =
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE smil PUBLIC "-//W3C//DTD SMIL 1.0//EN" "SMIL10.dtd">
<head>
</head>
<body>
<audio start="n=10.815s" end="n=19.914s"/>
</body>
</xml>
我尝试过以下操作：
String startTime = readString.replaceAll(".*start=\"n=|\\s.*", "").trim();
String endTime = readString.replaceAll(".*end=\"n=|\\s.*", "").trim();
Log.e("Start Time is :" , startTime);
Log.e("endTime Time is :" , endTime);
它工作正常，只是获取开始时间和结束时间但它也显示<？xml 标签。
Its working fine, with just getting the start time and end time but it also shows the <?xml tag.
如何解决此问题？
推荐答案
请找到解决方案在Java下面，这适用于包含字符串的任何数据
Please find the solution below in Java, this works for any data that contains the string
<audio start="n=........" end="n=......." />
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Test {
public static void main(String[] args)
{
String inputData1 = "<?xml version=\"1.0\" encoding=\"utf-8\"?>"+
"<!DOCTYPE smil PUBLIC \"-//W3C//DTD SMIL 1.0//EN\" \"SMIL10.dtd\">"
+ "<head>"
+ "</head>"
+ "<body>"
+ "<audio start=\"n=10.815s\" end=\"n=19.914s\"/>"
+ "<sometag> <audio start=\"n=10.815s\" end=\"n=20.914s\"/> </sometag>"
+ "</body>"
+ "</xml>";
String inputData2 = "some data goes here with or without tags; <audio start=\"n=10.815s\" end=\"n=20.914s\"/>; askjdhfla ";
Pattern pattern = Pattern.compile("<audio[^>]*start\\s*=\\s*\"n\\s*=\\s*([^\"]*)\"[^>]*end=\"n\\s*=\\s*([^\"]*)\"[^>]*>");
Matcher matcher = pattern.matcher(inputData1);
while(matcher.find()){
System.out.println("start=\"n="+matcher.group(1)+", & end=\"n="+matcher.group(2)+"");
}
}
}
Output For InputData1:
start="n=10.815s, & end="n=19.914s
start="n=10.815s, & end="n=20.914s
Output For InputData2:
start="n=10.815s, & end="n=20.914s
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