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报错：java.lang.AbstractMethordError:org.springframework.boot.test.mock.web.SpringBootMockServletContextPath()Ljava/lang/String;spring-test和spring-mock这俩jar包下面有一个相同路径相同类名的类MockServletContext。spring-test在单元测试启动的时候调用到了spring-mock下面的类导致报错。排除掉spring-mock包就好。

报错：has been injected into other beans [] in its raw version as part of a circular reference,but has eventually been wrapped.This meas that said other beans do not use the final version of the bean。我在项目中使用BeanPostProcessor动态代理包装了一个有循环依赖的bean就报了这个错误。

Caused by: javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate)

报错：Job for ssh.service failed because the control process exited with error code.See "systemctl status ssh.service" and "journalctl -xe" for details.这个报错八成是配置写错了。我是把/etc/ssh/sshd_config里面的 PermitRootLogin 配成了true，正确的值应该是 yes所以看到这个报错，首先检查自己最近修改的.

最近springboot启动后一小会就自动停止，没提示具体报错，只有提示：Disconnected from the target VM, address: '127.0.0.1:60011', transport: 'socket'Process finished with exit code 0我的解决办法：原来是没有加log4j的配置文件，在resources目录下新建文件：log4j.properties。复制内容：log4j.rootLogger=WARN, stdout

ElasticSearch安装报错：max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]课程里是需要修改文件：/etc/sysctl.conf本人用的centos7里找不到这个文件，找不到就新建试了试，确认可以解决。命令如下：#新建/etc/sysctl.conf并添加配置vm.max_map_count=262144"[root@VM_0_10_centos

用docker容器跑的mysql5.6一直好好的，今天用navicat链接突然报错：1045 - Access denied for user 'root'@'127.0.0.1' (using password:YES)看报错是没有root用户的登录权限。网上找了好多方法，大都是改配置的，都没解决。后来找到一篇可以的方法，亲测成功。第一步登录mysql，命令：mysql -h localhost -u root -p然后输入密码登录成功。第二步使用mysql数据..