idea导出数据库的可执行sql文件首先选中想要导出的数据库选中Dump with mysqldump打开最后 点击Run执行就可以导出你的数据库sql执行文件

axios请求访问本地的同级的json文件,产生错误信息：Access to XMLHttpRequest a xxx from origin 'null' has been blocked by CORS具体错误信息如下：Cross origin requests are only supported for protocol schemes: http, data, chrome, chrom