Java去除掉HTML里面所有标签的两种方法——开源jar包和自己写正则表达式

Java去除掉HTML里面所有标签,主要就两种，要么用开源的jar处理，要么就自己写正则表达式。自己写的话，可能处理不全一些自定义的标签。企业应用基本都是能找开源就找开源，实在不行才自己写……

1，开源的，我目前找到的就是Jsoup包：

    public static String getTextFromTHML(String htmlStr) {
        Document doc = Jsoup.parse(htmlStr);
        String text = doc.text();
        // remove extra white space
        StringBuilder builder = new StringBuilder(text);
        int index = 0;
        while(builder.length()>index){
            char tmp = builder.charAt(index);
            if(Character.isSpaceChar(tmp) || Character.isWhitespace(tmp)){
                builder.setCharAt(index, ' ');
            }
            index++;
        }
        text = builder.toString().replaceAll(" +", " ").trim();
        return text;
    }

2，自己写的话，百度一搜一大堆，这里只是借用一下：

public static String removeTag(String htmlStr) {
        String regEx_script = "<script[^>]*?>[\\s\\S]*?<\\/script>"; // script
        String regEx_style = "<style[^>]*?>[\\s\\S]*?<\\/style>"; // style
        String regEx_html = "<[^>]+>"; // HTML tag
        String regEx_space = "\\s+|\t|\r|\n";// other characters

        Pattern p_script = Pattern.compile(regEx_script,
                Pattern.CASE_INSENSITIVE);
        Matcher m_script = p_script.matcher(htmlStr);
        htmlStr = m_script.replaceAll("");

        Pattern p_style = Pattern
                .compile(regEx_style, Pattern.CASE_INSENSITIVE);
        Matcher m_style = p_style.matcher(htmlStr);
        htmlStr = m_style.replaceAll("");

        Pattern p_html = Pattern.compile(regEx_html, Pattern.CASE_INSENSITIVE);
        Matcher m_html = p_html.matcher(htmlStr);
        htmlStr = m_html.replaceAll("");

        Pattern p_space = Pattern
                .compile(regEx_space, Pattern.CASE_INSENSITIVE);
        Matcher m_space = p_space.matcher(htmlStr);
        htmlStr = m_space.replaceAll(" ");

        return htmlStr;

    }