Access denied for user ''@'localhost' (using password: NO)之idea坑~

idea启动sql连接远程数据库时发生错误：

发现是sql连接配置问题：

spring:
  datasource:
    data-username: root
    data-password: 123456
    url: jdbc:mysql://localhost:3307/jdbc?useSSL=false
    driver-class-name: com.mysql.jdbc.Driver

改成：

spring:
  datasource:
    username: root
    password: 123456
    url: jdbc:mysql://locaohost:3307/jdbc?useSSL=false
    driver-class-name: com.mysql.jdbc.Driver

坑点在于这是idea自己提示的：