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create-react-app 工具初始化react项目 https://create-react-app.dev/docs/getting-started npx npx create-react-app my-app npm npm init react-app my-app Yarn yar 阅读全文
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1 private List<User> users = Arrays.asList( 2 new User("1001", "John", 16), 3 new User("1002", "Carly", 17), 4 new User("1003", "Tom", 11), 5 new User 阅读全文
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https://www.jianshu.com/p/0d78d1b1c611 阅读全文
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https://blog.csdn.net/weixin_30844865/article/details/117475331 阅读全文
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1.display:flex https://blog.csdn.net/weixin_46380993/article/details/104572253 阅读全文
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JPA : update 报错:Executing an update/delete query; nested exception is javax.persistence.TransactionRequiredException: Executing an update/delete query 阅读全文
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1. 下载安装包 地址: https://downloads.mysql.com/archives/community/ 版本选择 (mysql-server_5.7.27-1ubuntu19.04_amd64.deb-bundle.tar) Product Version: 5.7.27 Oper 阅读全文
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https://www.oracle.com/java/technologies/downloads/archive/ https://www.oracle.com/java/technologies/javase/javase8-archive-downloads.html 阅读全文
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1 查看硬盘 fdisk -l 2 查看目前硬盘挂载情况 df -h 3 格式化硬盘 mkfs.ext4 /dev/xxx 4 创建挂载点 mkdir /data_dir1 5 挂载硬盘 mount /dev/xxx /data_dir1 6 创建开机自动挂载任务 echo '/dev/xxx /d 阅读全文
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https://zhuanlan.zhihu.com/p/354528659 https://blog.csdn.net/mfkjq/article/details/114278434 阅读全文