java - Java 中的搜索荧光笔

Question

boldHighlight 方法采用文本字符串并通过 <b></b> 突出显示其中的 q 关键字标签

colorHighlight 方法采用文本字符串并通过 <b style='background-color: #color'></b> 突出显示 int q 关键字有 12 种交替颜色

String text = "The use of hello as a telephone greeting has been credited to Thomas
               Edison; according to one source, he expressed his surprise with a
               misheard Hullo. Alexander Graham Bell initially used Ahoy (as used on 
               ships) as a telephone greeting"

String keywords = "HELLO Surprise"    

boldHighlight(text, keywords); // will produce:

The use of <b>hello</b> as a telephone greeting has been credited to Thomas Edison; according to one source, he expressed his <b>surprise</b> with a misheard Hullo. Alexander Graham Bell initially used Ahoy (as used on ships) as a telephone greeting`

colorHighlight(text, keywords); // will produce:

The use of <b style='background-color:#ffff66'>hello</b> as a telephone greeting has been credited to Thomas Edison;>according to one source, he expressed his <b style='background-color:#a0ffff'>surprise</b> with a misheard Hullo. Alexander Graham Bell initially used Ahoy (as used on ships) as a telephone greeting

<小时/>

问题:

有什么我可以使用的东西，比如第三方库，可以完成与以下方法类似的工作？或者，如果您查看代码，是否有一些可以改进的地方，以使性能更好和/或使其更优雅？`

<小时/>

private static final String[] colors = new String[]{"ffff66", "a0ffff", "99ff99", "ff9999", "ff66ff", "880000", "00aa00", "886800", "004699", "990099", "ffff66", "a0ffff"};

public static String safeCharWithSpace(String input) {
    input = input.trim();
    return Normalizer.normalize(input.toLowerCase(), Normalizer.Form.NFD)
            .replaceAll("\\p{InCombiningDiacriticalMarks}+", "")
            .replaceAll("[^\\p{Alnum}]+", " ");
}

private static String prepQuery(String q) {
    try {
        log.debug("qr encoded: " + q);
        q = URLDecoder.decode(q, "UTF-8");
    } catch (UnsupportedEncodingException ignore) {
    }
    log.debug("qr decoded: " + q);

    return removeIgnoreCase(q, stopWords);
}

public static String boldHighlight(String text, String q) {
    return highlight(text, q, false);
}

public static String colorHighlight(String text, String q) {
    return highlight(text, q, true);
}

private static String replaceWord(String text, String keyword, int colorNumber, boolean useColor) {
    String color = "";
    keyword = safeCharWithSpace(keyword);
    if (StringUtils.isNotEmpty(keyword) && !StringUtils.isWhitespace(keyword)) {
        if (useColor) color = " style='background-color: " + colors[colorNumber] + "'";
        return text.replaceAll("(?i)(" + keyword + ")(?!([^<]+)?>>)", "<b" + color + ">$1</b>");
    } else
        return text;
}

public static String highlight(String text, String q, boolean useColor) {
    String qr = prepQuery(q);
    String rtn = null;
    int i = 0;

    if (qr.startsWith("\"")) {
        String keywords = StringUtils.remove(qr, "\"");
        rtn = replaceWord(text, keywords, 0, useColor);
    } else {
        String[] keywords = qr.split("\\s");
        for (String keyword : keywords) {
            rtn = replaceWord(text, keyword, i, useColor);
            if (useColor) {
                if (i < 11) i++;
                else i = 0;
            }
        }
    }
    return rtn;
}

用于删除停用词removeIgnoreCase()在prepQuery()方法引用我的另一篇帖子:Removing strings from another string in java

Answer 1

哇，你可以用几种不同的方式来解决这个问题。

1. 你可以call a static method .

   即

   ${statics["java.lang.System"].currentTimeMillis()} 
   

2. MVC 要做的事情是在处理模板之前进行此处理，但我知道您只是维护代码。

看起来它只是做了几次替换所有的操作，因此对 Java 方法的更改应该可以工作。我必须建议你看看escaping tools Freemarker 有。

Freemarker确实有很棒的documentation ，并且内置函数涵盖了许多情况。