Springboot从配置文件properties读取字符串乱码的解决

spring.http.encoding.enabled=true

test.property.value=中文值

test.property.value.unicode=\u4e2d\u6587\u503c

package com.xiaobai.util; 
import lombok.extern.slf4j.Slf4j; 
import java.io.UnsupportedEncodingException;
import java.util.PropertyResourceBundle;
import java.util.ResourceBundle; 
 
@Slf4j
public class PropertiesUtil { 
    protected static ResourceBundle erpResponse; 
    protected static final String PROPERTIES_FILE = "propertytest"; 
    static {
        try {
            erpResponse = PropertyResourceBundle.getBundle(PROPERTIES_FILE);
        } catch (Exception e) {
            log.error(PROPERTIES_FILE + "配置文件加载失败。", e);
        }
    }
 
    public static String get(String key) {
        return erpResponse.getString(key);
    }
 
    public static String getChinese(String key) {
        String string = null;
        try {
            string = new String(erpResponse.getString(key).getBytes("ISO-8859-1"), "utf-8");
        } catch (UnsupportedEncodingException e) {
            log.error(e.getMessage());
        }
        return string;
    }
 
    public static void main(String[] args) {
        //属性值直接写成中文，打印出来的结果：中æå¼
        System.out.println(get("test.property.value"));
        //解决方案一，使用转码的方式，打印结果：中文值
        System.out.println(getChinese("test.property.value"));
        //解决方案二，properties文件中的属性值写成unicode（\u4e2d\u6587\u503c），打印结果：中文值
        System.out.println(get("test.property.value.unicode")); 
    } 
}