public static String selectiveConvertUnicode(String configValue) {
		StringBuilder sb = new StringBuilder();
		char[] chars = configValue.toCharArray();
		for (char aChar : chars) {
			if (isBaseLetter(aChar)) {
				sb.append(aChar);
			}
			else {
				sb.append(String.format("\\u%04x", (int) aChar));
			}
		}
		return sb.toString();
	}
Convert Chinese characters to Unicode.
@param configValue value of config
@return new string
spring-cloud-alibaba-starters/spring-alibaba-nacos-config/src/main/java/com/alibaba/cloud/nacos/utils/NacosConfigUtils.java