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推包包含 Git 信息， Docker 等
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Diff for: ‎DevOps/CI.md

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### 设置最后封板时间并严守，以便有足够的时间编译程序包做回归测试
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5-
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### 编译日志同时保存到文件后用工具解析出错行作者，根据时间倒序发邮件
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`2>&1|tee maven.log`
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### 任何脚本运行的操作都要搜下是否有乱码的可能
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- 标签不支持空格和冒号，不能用`yyyy-MM-dd HH:mm:ss`
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- 空格换成下划线的话双击时会连带选择
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- 逗号常用于分割符
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- 如果是比较高的符号会影响视觉分隔效果
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- 虽然大写更有美感也符合转悠名词的习惯，\
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- 但是是较高的符号会影响视觉分隔效果，所以用下划线
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- 英文逗号常用于分割符，所以用英文句号
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- 虽然大写更有美感也符合专有名词的习惯，\
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但在输入时不便，视觉辨识度也较低，所以用小写
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所以用下划线：
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```
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prd_yyyy-mm-dd_hh.mm.ss
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其中：

Diff for: ‎DevOps/Nginx.md

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# Nginx
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### 使用 alias 便于本地文件夹可以不用和 location 同名
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- root，实际的路径就是：root值 + location值。
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- alias，实际的路径就是：alias值。
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### 不要用 root 启动避免后面非 root 报 Premature EOF
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在 nginx.conf 中配置 user 启动用户
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### 修复漏洞更新时不用重启命令
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访问 404 网页看到的仍是旧版
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### 设置 Nginx 的 body 大小避免请求失败
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```
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client_max_body_size 8m;

Diff for: ‎DevOps/docker/Docker_CentOS7.md

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# Docker CentOS 7 常用设置
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### centos8 停止维护，所以下 7
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```
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docker pull centos:centos7
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```
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阿里云yum（centos7不用也行）：http://mirrors.aliyun.com/repo/
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### 特权启动设置时区
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避免报错 Failed to get D-Bus connection: Operation not permitted
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```
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docker run -d --name centos7 --privileged=true centos:centos7 /usr/sbin/init -e TZ=Asia/Shanghai
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```
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### 同步阿里云时间
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```
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timedatectl set-timezone Asia/Shanghai
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yum install ntpdate -y
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ntpdate ntp.aliyun.com
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```
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### 安装 locate 命令并初始化
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```
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yum install mlocate -y
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updatedb
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```
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### 别自己编译 gcc，会遇到很多问题
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安装并切换到 gcc 11 环境
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```
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yum install -y http://mirror.centos.org/centos/7/extras/x86_64/Packages/centos-release-scl-rh-2-3.el7.centos.noarch.rpm
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yum install -y http://mirror.centos.org/centos/7/extras/x86_64/Packages/centos-release-scl-2-3.el7.centos.noarch.rpm
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yum install devtoolset-11-gcc-c++
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scl enable devtoolset-11 bash
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```
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如果以后都用 gcc 11 可以改下链接
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```
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mv /usr/bin/gcc /usr/bin/gcc-4.8.5
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ln -s /opt/rh/devtoolset-11/root/bin/gcc /usr/bin/gcc
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```

Diff for: ‎DevOps/docker/Docker_Win.md

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# Docker Windows 版
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### 安装云缓存的旧版，避免新版各种启动失败
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https://mirrors.aliyun.com/docker-toolbox/windows/docker-for-windows/stable
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```json
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{
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"builder": {
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"gc": {
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"defaultKeepStorage": "20GB",
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"enabled": true
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}
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},
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"experimental": false,
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"features": {
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"buildkit": true
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},
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"registry-mirrors": [
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"http://hub-mirror.c.163.com",
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"https://docker.mirrors.ustc.edu.cn",
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"https://registry.docker-cn.com",
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"https://6kx4zyno.mirror.aliyuncs.com"
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]
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}
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```

Diff for: ‎DevOps/docker/README.md

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# Docker
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Diff for: ‎DevOps/linux/sh_mnemonic.md

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# 助记语：你不替食堂熬汤
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nbtstat -A IP
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```
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、
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## 端口查进程
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```batch

Diff for: ‎business/README.md

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# 业务应用

Diff for: ‎db/SQL.md

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# SQL
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### 比较时都用字符串比较，MyBatis 用 #{} 自动加引号，避免类似 1='1xxx' 成立导致问题
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### `INSERT`语句建议在工具上编辑好值后使用将所选行导出为`INSERT`语句的方式
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在工具中编辑是为了方便在图形界面中观察每条记录的差别，导出的语句方便也避免了繁琐的语法编辑和错漏。

Diff for: ‎db/comment/Oracle_comment.sql

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SELECT * FROM SYS.ALL_TAB_COMMENTS WHERE OWNER = '库名' AND COMMENTS IS NULL;
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-- 查询所有没注释的列
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SELECT * FROM SYS.ALL_COL_COMMENTS WHERE OWNER = '库名' AND COMMENTS IS NULL;
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SELECT * FROM SYS.ALL_COL_COMMENTS WHERE OWNER = '库名' AND COMMENTS IS NULL;
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-- 表注释转语句 同步注释用
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SELECT 'COMMENT ON TABLE '||OWNER||'.'||TABLE_NAME||' IS '''||COMMENTS||''';'
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FROM SYS.ALL_TAB_COMMENTS WHERE OWNER = '库名' AND COMMENTS IS NOT NULL;
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-- 列注释转语句 同步注释用
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SELECT 'COMMENT ON COLUMN '||OWNER||'.'||TABLE_NAME||'.'||COLUMN_NAME||' IS '''||COMMENTS||''';'
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FROM SYS.ALL_COL_COMMENTS WHERE OWNER = '库名' AND COMMENTS IS NOT NULL;

Diff for: ‎db/transaction.md

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| 重入 | | MAC + jvm进程ID + 线程ID | 与当前最小节点对比 |
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| 单点 | | 集群部署 | 集群部署 |
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## 分布式事务
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- 分支事务执行时要拒绝回滚执行
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- 已经失败的事务直接返回回滚成功
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- 多次收到分支事务要幂等

Diff for: ‎java/java_framework/springboot/common/AfterRun.java

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package io.github.linwancen.app;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.boot.CommandLineRunner;
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import org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext;
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import org.springframework.stereotype.Component;
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import javax.servlet.ServletContext;
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import java.net.InetAddress;
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import java.net.UnknownHostException;
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/**
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* 启动后打印访问地址
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* <br>
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* <br>如果需要更复杂的参数可以使用 {@link org.springframework.boot.ApplicationRunner}
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*/
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@Component
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public class AfterRun implements CommandLineRunner {
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private static final Logger LOGGER = LoggerFactory.getLogger(AfterRun.class);
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public static final String LOCAL_IP;
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static {
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String ip;
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try {
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ip = InetAddress.getLocalHost().getHostAddress();
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} catch (UnknownHostException e) {
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ip = "0.0.0.0";
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}
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LOCAL_IP = ip;
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}
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private final ServletWebServerApplicationContext servletWebServerApplicationContext;
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public AfterRun(ServletWebServerApplicationContext servletWebServerApplicationContext) {
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this.servletWebServerApplicationContext = servletWebServerApplicationContext;
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}
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@Value("${spring.application.name:}")
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private String name;
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@Value("${spring.profiles.active:}")
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private String profile;
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@Override
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public void run(String... args) {
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int port = servletWebServerApplicationContext.getWebServer().getPort();
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ServletContext servletContext = servletWebServerApplicationContext.getServletContext();
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String contextPath = servletContext == null ? "" : servletContext.getContextPath();
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//noinspection HttpUrlsUsage
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LOGGER.info("服务启动完毕 start complete {} {} http://{}:{}{}", name, profile, LOCAL_IP, port, contextPath);
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LOGGER.info("本地访问地址 http://localhost:{}{}", port, contextPath);
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}
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}

Diff for: ‎java/jdk/Java_reflection.md

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### 使用 JDK 自带的类来做解析工具的接口返回
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一些常量或类型可以用诸如`Modifier`、`ElementType`的定义
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一些常量或类型可以用诸如`Modifier`、`ElementType`的定义
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### 不要使用`ClassLoader`获取类路径以免空指针异常
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```java
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class A { void fun() {
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Main.class.getResource(""); // 该类包路径 √
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Main.class.getResource("/"); // 根路径 √
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ClassLoader.getSystemResource("");// 类的根路径，classpath file 模式下为 null
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ClassLoader.getSystemResource("/"); // null
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Main.class.getClassLoader().getResource(""); // 根路径
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Main.class.getClassLoader().getResource ("/"); // null
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}}
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```

Diff for: ‎log/PathUtils.java

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static {
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@SuppressWarnings("ConstantConditions")
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String path = ClassLoader.getSystemClassLoader().getResource("").getPath();
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String path = PathUtils.class.getResource("/").getPath();
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try {
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path = URLDecoder.decode(path, "UTF-8");
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} catch (Exception ignored) {

Diff for: ‎maven/Maven_deploy.md

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</properties>
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```
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### 一般情况下应推送源码和文档，便于依赖方研究如何使用和排查问题
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推送源码官方参考：http://maven.apache.org/plugins/maven-source-plugin/usage.html
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```
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### 应在包中包含 Git 信息方便在没有 Git Tag 的时候找到对应版本
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打包Git信息官方参考：https://github.com/git-commit-id/git-commit-id-maven-plugin
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```xml
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<project>
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...
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<build>
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<plugins>
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<plugin>
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<groupId>io.github.git-commit-id</groupId>
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<artifactId>git-commit-id-maven-plugin</artifactId>
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<version>4.9.9</version>
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<executions>
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<execution>
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<id>git-commit-id</id>
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<phase>initialize</phase>
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<goals>
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<goal>revision</goal>
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</goals>
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</execution>
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</executions>
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<configuration>
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<dateFormat>yyyy-MM-dd HH:mm:ss</dateFormat>
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<generateGitPropertiesFile>true</generateGitPropertiesFile>
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<generateGitPropertiesFilename>${project.build.outputDirectory}/git.json</generateGitPropertiesFilename>
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<format>json</format>
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<failOnNoGitDirectory>false</failOnNoGitDirectory>
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<failOnUnableToExtractRepoInfo>false</failOnUnableToExtractRepoInfo>
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</configuration>
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</plugin>
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</plugins>
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</build>
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...
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</project>
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```
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### 推送私服用命令行代替 distributionManagement 配置
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```shell script

Diff for: ‎pm/README.md

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# 项目管理
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## Excel 应用
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### 使用在线 Excel 而不是离线方便统一修改更新
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### 通过表名拼接的形式设计统计表
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```
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=COUNTA(INDIRECT("'"&$A2&"'!"&"$G:$G"))-1
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=COUNTIF(INDIRECT("'"&$A2&"'!"&"$G:$G"), B$1)
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```
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### 需统计完成时间的可以用`Ctrl + ;`输入日期代表完成

Diff for: ‎regexp/RegExpOpti.md

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正则表达式优化
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# 正则表达式优化
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《精通正则表达式》总结

Diff for: ‎web/README.md

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# 前端

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