replace Html Tag via Regex - Java java.util.regex

Java examples for java.util.regex:Match HTML

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Description

replace Html Tag via Regex

Demo Code


//package com.java2s;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {

    public static String replaceHtmlTag(String str, String beforeTag,
            String tagAttrib, String startTag, String endTag) {
        String regxpForTag = "<\\s*" + beforeTag + "\\s+([^>]*)\\s*>";
        String regxpForTagAttrib = tagAttrib + "=\"([^\"]+)\"";
        Pattern patternForTag = Pattern.compile(regxpForTag);
        Pattern patternForAttrib = Pattern.compile(regxpForTagAttrib);
        Matcher matcherForTag = patternForTag.matcher(str);
        StringBuffer sb = new StringBuffer();
        boolean result = matcherForTag.find();
        while (result) {
            StringBuffer sbreplace = new StringBuffer();
            Matcher matcherForAttrib = patternForAttrib
                    .matcher(matcherForTag.group(1));
            if (matcherForAttrib.find()) {
                matcherForAttrib.appendReplacement(sbreplace, startTag
                        + matcherForAttrib.group(1) + endTag);
            }/*from  www .  ja  v  a2 s. c  o m*/
            matcherForTag.appendReplacement(sb, sbreplace.toString());
            result = matcherForTag.find();
        }
        matcherForTag.appendTail(sb);
        return sb.toString();
    }
}

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