Java的。用regex替换相对链接到绝对值

时间:2012-11-06 14:57:03

标签: java regex

我想替换一个表示Html文件的String,所有相对的链接都是绝对链接。我写了下面的方法,这是行不通的。任何链接后跟一个重复的基础,如http://www.google.dehttp://www.google.de/resource

    public static String replacePattern(URL targetUrl,String urlAsString,String patternString) throws IOException{
    System.out.println(targetUrl.toString());
    Pattern pattern = Pattern.compile(patternString);
    Matcher matcher = pattern.matcher(urlAsString);

    Set<String> replacedStrings = new TreeSet<String>();


    //return matcher.replaceAll(targetUrl.toString()+"$0");

    while (matcher.find()) {
        String relativeLink = matcher.group(1);
        //System.out.println("Find Link " + relativeLink);
        if(!replacedStrings.contains(relativeLink)){
            //System.out.println("Relative Link " + relativeLink);
            String newLink = targetUrl.toString() + relativeLink;
            //System.out.println("New Link " + newLink);
            urlAsString = urlAsString.replace(relativeLink,newLink);
            replacedStrings.add(relativeLink);

        }

    }

    return urlAsString;

}

UrlAsString是一个String,其中包含wholecontent作为String.My模式

href=['\"](/[^'\"]+)['\"]

src=['\"](/[^'\"]+)['\"]

1 个答案:

答案 0 :(得分:0)

使用Class URL

URL baseUrl = new URL("http://www.domain.com/folder/");
URL url = new URL(baseURL , "url.html");