Java-在网站上查找特定数字

Question

What would the method be to find a number after a String of text

Example would be the latest version of something.

So basically it would open up a URL, use the BufferedReader and search for a String of text. The number (int / double) would be found after the String and the program would compare the latest version with the current version.

Thanks in Advance

Answer 1

Using an HTML parser like @qrtt suggested is a good idea. But you could also do the following. Take the entire response from the page, and use regex to find your string

The regex would be something like /string_of_text=[0-9]*/g That would return the string of text along with the number after it, which you can use, with a little string manipulation.

Answer 2

You need a parser like Jsoup to parse your content into tokens. Then run a search using regex. I'm not too good with regex so maybe you can use txt2re.com for this.

Answer 3

我找到了一个解决方案，我使用子字符串找到了“版本= X”所在的位置，然后将其解析为double