启动renrenfast项目一直报错：
2021-10-08 12:27:34.228 INFO 22872 --- [ main] io.renren.RenrenApplication : Starting RenrenApplication on DESKTOP-R1MDH9A with PID 22872 (D:WorkSpaceDCgulimallrenren-fasttargetclasses started by chang in D:WorkSpaceDCgulimall) 2021-10-08 12:27:34.231 DEBUG 22872 --- [ main] io.renren.RenrenApplication : Running with Spring Boot v2.2.4.RELEASE, Spring v5.2.3.RELEASE 2021-10-08 12:27:34.231 INFO 22872 --- [ main] io.renren.RenrenApplication : The following profiles are active: dev 2021-10-08 12:27:35.036 INFO 22872 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode! 2021-10-08 12:27:35.038 INFO 22872 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data Redis repositories in DEFAULT mode. 2021-10-08 12:27:35.071 INFO 22872 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 23ms. Found 0 Redis repository interfaces. 2021-10-08 12:27:35.261 INFO 22872 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'shiroConfig' of type [io.renren.config.ShiroConfig$$EnhancerBySpringCGLIB$$1f51570c] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2021-10-08 12:27:35.353 INFO 22872 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'mybatis-plus-com.baomidou.mybatisplus.autoconfigure.MybatisPlusProperties' of type [com.baomidou.mybatisplus.autoconfigure.MybatisPlusProperties] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2021-10-08 12:27:35.357 INFO 22872 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'mybatisPlusConfig' of type [io.renren.config.MybatisPlusConfig$$EnhancerBySpringCGLIB$$827d5e28] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2021-10-08 12:27:35.361 INFO 22872 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'paginationInterceptor' of type [com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2021-10-08 12:27:35.366 INFO 22872 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'com.baomidou.mybatisplus.autoconfigure.MybatisPlusAutoConfiguration' of type [com.baomidou.mybatisplus.autoconfigure.MybatisPlusAutoConfiguration$$EnhancerBySpringCGLIB$$f99e2814] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2021-10-08 12:27:35.368 INFO 22872 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'dynamic-io.renren.datasource.properties.DynamicDataSourceProperties' of type [io.renren.datasource.properties.DynamicDataSourceProperties] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2021-10-08 12:27:35.369 INFO 22872 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'dynamicDataSourceConfig' of type [io.renren.datasource.config.DynamicDataSourceConfig$$EnhancerBySpringCGLIB$$22f6d55c] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2021-10-08 12:27:35.374 INFO 22872 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'dataSourceProperties' of type [io.renren.datasource.properties.DataSourceProperties] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2021-10-08 12:27:35.824 ERROR 22872 --- [ main] com.alibaba.druid.pool.DruidDataSource : init datasource error, url: jdbc:mysql://192.168.56.10:3306/gulimall_admin?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
url后需要加&useSSL=false 就可以解决
url: jdbc:mysql://192.168.56.10:3306/gulimall_admin?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai&useSSL=false
网上查资料，在MySQL5.7之前的版本，安全性较低，存在任何用户都可以连接上的 test 库，所以官方在5.7版本加大了对隐私的保护。并且采用了默认 useSSL = true值防止对数据库的随意修改，到了8.0版本，仍然保留了SSL，并且默认值为 true，所以只要将 “?useSSL= false” 放在url表名后即可。
