【Java】 字符串中{ }占位符替换方面的问题

引入依赖

public static void main(String[] args) {

        String name = "张三";
        int age = 16;
        String str1 = "我叫%s，年龄%s";
        String context = String.format(str1, name, age);
        System.out.println("context: " + context);

        System.out.println("-----------------------");

        String st2 = "我叫{0}，年龄{1}";
        String context2 = MessageFormat.format(st2, name, age);
        System.out.println("context2: " + context2);

        System.out.println("-----------------------");

        Map<String, String> map = new HashMap<>();
        map.put("name", "张三");
        map.put("age", "16");
        //  StrSubstitutor
//        StrSubstitutor strSubstitutor = new StrSubstitutor(map);
        StringSubstitutor strSubstitutor = new StringSubstitutor();
        String str3 = "我叫${name}，年龄${age}";
        String context3 = strSubstitutor.replace(str3);
        System.out.println("context3: " + context3);
    }

先来看看StrSubstitutor（已过期）的用法

org.apache.commons commons-lang3在 3.6以后废弃了该方法，apache建议替换成 commons-text 包中的StringSubstitutor
官方javadoc说明：
https://commons.apache.org/proper/commons-lang/javadocs/api-release/index.html

使用StringSubstitutor需要添加apache commons-text依赖

        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-text</artifactId>
            <version>1.8</version>
        </dependency>
使用方法与StrSubstitutor 一样

 Map<String,String> valuesMap = new HashMap();
 valuesMap.put("animal", "quick brown fox");
 valuesMap.put("target", "lazy dog");
 String templateString = "The ${animal} jumped over the ${target}.";
 StringSubstitutor sub = new StringSubstitutor(valuesMap);
 String resolvedString = sub.replace(templateString);
 

参考文章

java字符串占位符替换 - Ethon - 博客园

apache commons-lang3字符串替换方法StrSubstitutor过期_Tino's Space-CSDN博客