【Java】不区分大小写进行高亮替换

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @Author: 
 * @Date: 2022/6/13 17:35
 * @Description: 通用工具
 * @Version: v1.0
 */
public class ComUtil {

    /**
     * 实现不区分大小写高亮替换
     *
     * @param source
     * @param patternString
     * @return
     */
    public static String ignoreCaseReplace(String source, String patternString) {
        Pattern p = Pattern.compile(patternString, Pattern.CASE_INSENSITIVE);
        Matcher mc = p.matcher(source);
        StringBuffer sb = new StringBuffer();
        while (mc.find()) {
            mc.appendReplacement(sb, "<font color='red' >" + mc.group() + "</font>");
        }
        mc.appendTail(sb);
        return sb.toString();
    }

    public static void main(String[] args) {
        String a = "ABCDabcd哈哈";
        String b = "b";
        System.out.println(ignoreCaseReplace(a, b));
    }
}

输出：A<font color='red' >B</font>CDa<font color='red' >b</font>cd哈哈