Java - 拆分字符串以获取十进制数(Java - Split String to get decimal number)

 我需要从网站中提取一些数据，然后在变量中保存一些值。 
 
 在这里你有代码： 
 
public class Principal {

 public static void main(String[] args) throws IOException {

    URL url = new URL("http://www.numbeo.com/cost-of-living/country_result.jsp?country=Turkey");
    URLConnection yc = url.openConnection();
    BufferedReader in = new BufferedReader(new InputStreamReader(yc.getInputStream()));
    String inputLine;
            String valor;
            String str = null;

    while ((inputLine = in.readLine()) != null) {
                    if(inputLine.contains("Milk"))
                    {
                         System.out.println("Encontrei! " + inputLine );
                         valor=inputLine.substring(inputLine.lastIndexOf("\"priceValue\">") + 14);
                         System.out.println("valor:" +valor);

                    }

            }
    in.close();
    }

  }
 
 第一个输入行打印： <tr class="tr_standard"><td>Milk (regular), (1 liter) </td> <td style="text-align: right" class="priceValue"> 2.45&nbsp;TL</td> 
 
 现在我必须提取"2.45"我该怎么做？ 我已经尝试了一些正则表达式，但无法使它工作。 对不起我的英语不好。 提前致谢。 

I need to extract some data from an website and then save some values in variables.
 
Here you've got the code:
 
public class Principal {

 public static void main(String[] args) throws IOException {

    URL url = new URL("http://www.numbeo.com/cost-of-living/country_result.jsp?country=Turkey");
    URLConnection yc = url.openConnection();
    BufferedReader in = new BufferedReader(new InputStreamReader(yc.getInputStream()));
    String inputLine;
            String valor;
            String str = null;

    while ((inputLine = in.readLine()) != null) {
                    if(inputLine.contains("Milk"))
                    {
                         System.out.println("Encontrei! " + inputLine );
                         valor=inputLine.substring(inputLine.lastIndexOf("\"priceValue\">") + 14);
                         System.out.println("valor:" +valor);

                    }

            }
    in.close();
    }

  }
 
First inputline print this: <tr class="tr_standard"><td>Milk (regular), (1 liter) </td> <td style="text-align: right" class="priceValue"> 2.45&nbsp;TL</td>
 
Now I've got to extract just the "2.45" how can I do that? I already tried with some Regex but can't make it work. Sorry for my English. Thanks in advance.

原文：https://stackoverflow.com/questions/33767996