qq_42803467的博客

问题描述：Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simpleCollecting jq Using cached https://pypi.tuna.tsinghua.edu.cn/packages/77/93/878b4c18b0e44b7191bac3d016937336daae273e7c1009bcdbb3418b4af2/jq-1.2.1.tar.gz (72 kB) Installing build depen

产生原因：MariaDB没有远程访问权限解决方法：需要给对应的MySQL账户分配权限，允许使用该账户远程连接到MySQL1.首先查看账户信息select User, host from mysql.user;2.root账户中的host项是localhost表示该账号只能进行本地登录，我们需要修改权限，输入命令：GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'password' WITH GRANT OPT

错误描述：---------------------------------------------------------------------------TypeError Traceback (most recent call last)<ipython-input-62-d558297b41f8> in <module>----> 1 A_sum_axis0 = A.sum(axis=0)

vscode报错：找不到驱动器。名为“.C”的驱动器不存在。解决方法：1.点击设置2.打开settings.json文件3.加入如下代码 "terminal.integrated.shell.windows": "C:\\WINDOWS\\System32\\cmd.exe"4.保存重启。...

问题描述：com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failureThe last packet successfully received from the server was 690 milliseconds ago. The last packet sent successfully to the server was 684 milliseconds ago. at s...

问题描述：在tomcat8使用servlet3.0上传文件，原来按以下步骤就可以完成1.Part part = request.getPart("XX");2.part.getSubmittedFileName()//直接获取文件名3.part.write(realPath)在tomcat7 的环境下就没有part.getSubmittedFileName()这一方法，无法直接获取文件名使用fiddle抓包工具，查看对应的图片的名称解决方案：String cd ..

在进行单元测试发现Caused by: javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: java.sec解决方法："jdbc:mysql://127.0.0.1:3306/java_16blogdemo?characterEncoding=utf-8&useSSL=true";将上面的useSSL改为false即可 。"C:\Program Files (x86)\Jav