使用Java替换字符串中的占位符${xx}

引入pom依赖

<dependency>
    <groupId>commons-lang</groupId>
    <artifactId>commons-lang</artifactId>
    <version>2.6</version>
</dependency>

使用

import org.apache.commons.lang.text.StrSubstitutor;
import java.util.HashMap;
import java.util.Map;

public class test {
    
    
    public static void main(String[] args) {
    
    
        Map<String, Object> map = new HashMap<>();
        map.put("name", "旺旺");
        map.put("gender", "未知");
        String s = "双重否定的${name}, 性别是${gender}";
        System.out.println(replaceAll(map, s));
    }
    // 替换所有占位符
    public static String replaceAll(Map<String, Object> map, String replaceValue){
    
    
        StrSubstitutor strSubstitutor = new StrSubstitutor(map);
        return strSubstitutor.replace(replaceValue);
    }
}

运行结果

双重否定的旺旺, 性别是未知