Java相当于PHP的preg_replace_callback

我不知道Java内置有什么类似的东西。您可以使用Matcher类轻松滚动自己的游戏：

import java.util.regex.*;public class CallbackMatcher{    public static interface Callback    {        public String foundMatch(MatchResult matchResult);    }    private final Pattern pattern;    public CallbackMatcher(String regex)    {        this.pattern = Pattern.compile(regex);    }    public String replaceMatches(String string, Callback callback)    {        final Matcher matcher = this.pattern.matcher(string);        while(matcher.find())        { final MatchResult matchResult = matcher.toMatchResult(); final String replacement = callback.foundMatch(matchResult); string = string.substring(0, matchResult.start()) +          replacement + string.substring(matchResult.end()); matcher.reset(string);        }    }}

然后致电：

final CallbackMatcher.Callback callback = new CallbackMatcher.Callback() {    public String foundMatch(MatchResult matchResult)    {        return "<img src="thumbs/" + matchResults.group(1) + ""/>";    }};final CallbackMatcher callbackMatcher = new CallbackMatcher("/[thumb(d+)]/");callbackMatcher.replaceMatches(articleText, callback);

请注意，您可以通过调用

matchResults.group()

matchResults.group(0)

编辑： 使它看起来更像PHP函数的确切功能。

这是原始照片，因为询问者喜欢它：

public class CallbackMatcher{    public static interface Callback    {        public void foundMatch(MatchResult matchResult);    }    private final Pattern pattern;    public CallbackMatcher(String regex)    {        this.pattern = Pattern.compile(regex);    }    public String findMatches(String string, Callback callback)    {        final Matcher matcher = this.pattern.matcher(string);        while(matcher.find())        { callback.foundMatch(matcher.toMatchResult());        }    }}

对于这种特殊的用例，最好只在回调中将每个匹配项排队，然后再向后遍历它们。这将避免在修改字符串时必须重新映射索引。