public String dealWith(String source) {
        return StringUtils.isNullOrEmpty(source);
    }
Handle empty string or null character

@param source source character
@return java.lang.String
chat2db-server/chat2db-server-web/chat2db-server-web-api/src/main/java/ai/chat2db/server/web/api/controller/rdb/doc/DatabaseExportService.java