数据库连接的格式:账号:root 密码:0KxhJHUzxyjP1GZyqtOe 服务器地址:dds-2zef841f2731e5141.mongodb.rds.aliyuncs.com<?_xml version=”1.0” encoding=”UTF-8”?>_ math mongodb://root:0KxhJHUzxyjP1GZyqtOe@dds-2zef841f2731e5141.mongodb.rds.aliyuncs.com:3717