四种安装方式：1、yum或apt2、rpm包或deb包3、源代码编译安装4、generic-linux安装（编译完成mysql，解压缩后配置即可运行）实验环境：centos7.6mysql 8.0.20pre-install 检查：1、检查libaiorpm -qa | grep libaio2、检查mysql是否已经安装rpm -qa | grep mysqlnetstat -tunlp | g

Error creating bean with name ‘xxxController’: Injection of resource dependencies failed看看你是不是改mapper.java文件的时候，没有在mapper.xml里边做相应的修改Exception encountered during context initialization - cancelling re