使用正则表达式实现Springboot项目下的文本变量替换工具类

Posted 2021-11-05 北溟溟

package com.yundi.atp.platform.util;

import lombok.extern.slf4j.Slf4j;

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

/**
 * @Author: yanp
 * @Description: 使用正则表达式，实现文本变量替换
 * @Date: 2021/10/15 18:34
 * @Version: 1.0.0
 */
@Slf4j
public class TemplateParseUtil {
    private final static Pattern pattern = Pattern.compile("((?<=\\\\{)([a-zA-Z\\\\d]+)(?=\\\\}))");


    public static String regParse(String template, Map<String, Object> map) {
        Matcher matcher = pattern.matcher(template);
        while (matcher.find()) {
            String key = matcher.group();
            template = template.replaceAll("\\\\$\\\\{" + key + "\\\\}", map.get(key) + "");
        }
        return template;
    }

    public static void main(String[] args) {
        String template = "${testOne} is a good ${testTwo}!";
        Map map = new HashMap(16);
        map.put("testOne", "I");
        map.put("testTwo", "Man");
        String result = regParse(template, map);
        System.out.println("result:" + result);
    }

}