# 免登陆下载java
https://xiandan.io/posts/jdk-download.html
# 高速镜像
https://github.com/LilithBristol/javajdkforwinx64

%JAVA_HOME%\bin
%JAVA_HOME%\jre\bin

# JAVA_HOME
C:\Program Files\Java\jdk1.8.0_212
# CLASSPATH
.;%JAVA_HOME%\bin;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar

# 导包
 shift + alt + o

# IDEA中编辑区右键--maven--create xml
<mirrors>  
    <mirror>
        <id>alimaven</id>
        <name>aliyun maven</name>
        <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
        <mirrorOf>central</mirrorOf>
    </mirror>

    <mirror>
        <id>uk</id>
        <mirrorOf>central</mirrorOf>
        <name>Human Readable Name for this Mirror.</name>
        <url>http://uk.maven.org/maven2/</url>
    </mirror>

    <mirror>
        <id>CN</id>
        <name>OSChina Central</name>
        <url>http://maven.oschina.net/content/groups/public/</url>
        <mirrorOf>central</mirrorOf>
    </mirror>

    <mirror>
        <id>nexus</id>
        <name>internal nexus repository</name>
        <url>http://repo.maven.apache.org/maven2</url>
        <mirrorOf>central</mirrorOf>
    </mirror>
</mirrors>

sudo apt install mysql
sudo mysql -u root -p
source /home/user/oa_system/VBlog/blogserver/src/main/resources/vueblog.sql

# 创建数据库
CREATE DATABASE ryvue;
# 切换当前数据库
use ryvue;
set character set utf8;
# 执行sql脚本
source /home/user/oa_system/RuoYi-Vue/sql/ry_20220822.sql
source /home/user/oa_system/RuoYi-Vue/sql/quartz.sql
# 删除数据库
drop database 数据库名;
# 显示所有数据库
show databases;
# 创建数据库
create database 数据库名;
# 显示数据库编码格式
 SHOW VARIABLES LIKE 'character_set_%';
# 删除 mysql 密码
SET PASSWORD FOR root@localhost=PASSWORD('');
# 重建数据库
drop database ryvue;
create database ryvue;
use ryvue;

echo "deb http://security.ubuntu.com/ubuntu focal-security main" | sudo tee /etc/apt/sources.list.d/focal-security.list
sudo apt-get update
sudo apt-get install libssl1.1

wget https://downloads.mysql.com/archives/get/p/8/file/mysql-workbench-community_8.0.12-1ubuntu18.04_amd64.deb
sudo dpkg -i mysql*.deb 
sudo apt-get install -f 
sudo dpkg -i mysql*.deb  

 sudo apt install npm -y

npm set progress=false 

npm config set registry http://registry.npmjs.org/

npm install --legacy-peer-deps

reify:abbrev: sill audit bulk request
删除 package-lock.json 文件

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.38.0/install.sh | bash

source ~/.bashrc

nvm --version

nvm install <node-version>

nvm install 14.17.6

nvm alias default <node-version>

nvm alias default 14.17.6

node -v
npm -v

nvm ls-remote

nvm install <node-version>

nvm install 12.22.6

nvm use <node-version>

nvm use 12.22.6

node -v

maven 相关依赖还没下载完

# 缺少.mavenrc 配置文件
vim ~/.mavenrc
# 将 JAVA 配置放进去
export JAVA_HOME=/usr/lib/jvm/jdk1dot8

@TableField(exist = false)

// 传入的时间格式要和解析的时间格式保持一致，如以下解析方式，传入参数  2023-03-08 11:11:11
LocalDateTime startDateTime = LocalDateTime.parse(startTime,
        DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
LocalDateTime endDateTime = LocalDateTime.parse(endTime,
        DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
        DateTimeFormatter localDateFmt = DateTimeFormatter.ofPattern("yyyy-MM-dd");
        
        
 DateTimeFormatter localDateFmt = DateTimeFormatter.ofPattern("yyyy-MM-dd");
  if (!"".equals(startTime) && !"".equals(endTime)) {
      LocalDate startDate = LocalDate.parse(startTime, localDateFmt);
      LocalDate endDate = LocalDate.parse(endTime, localDateFmt);
      LocalDateTime startDateTime = LocalDateTime.of(startDate, LocalTime.MIN);
      LocalDateTime endDateTime = LocalDateTime.of(endDate, LocalTime.MAX);
      log.debug("startDateTime: " + startDateTime);
      log.debug("endDateTime: " + endDateTime);
      queryWrapper.between("create_time", startDateTime, endDateTime);
  }

提升事务隔离级别
@Transactional(isolation = Isolation.READ_UNCOMMITTED)

解决方案：如果想取一条并不想报错时使用 getOne(queryWrapper,false)

sudo vim /etc/mysql/my.cnf
# 填写如下配置
[client]
default-character-set=utf8mb4

[mysqld]
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci
init_connect='SET NAMES utf8mb4'
skip-character-set-client-handshake = true

[mysql]
default-character-set = utf8mb4

 export NODE_OPTIONS=--openssl-legacy-provider

unset NODE_OPTIONS

    <select id="findIdByOrgId" resultType="resultType="java.lang.Integer">
    SELECT CAST(id AS UNSIGNED) AS id FROM department WHERE organization_id = #{orgId}
    </select>

export NODE_OPTIONS=--openssl-legacy-provider
npm run serve

multipart.maxFileSize=100Mb
multipart.maxRequestSize=1000Mb

spring.http.multipart.maxFileSize=100Mb
spring.http.multipart.maxRequestSize=1000Mb

spring.servlet.multipart.max-file-size=100MB
spring.servlet.multipart.max-request-size=1000MB

String userIp =  request.getRemoteAddr();

@JsonIgnore
@ApiModelProperty(value = "不重要")
@TableField(exist = false)
private String unimportant;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
  //获取请求参数
    String queryString = request.getQueryString();
    log.info("请求参数:{}", queryString);
    }

# 必须要加这条字段控制能够获取的 header
        response.addHeader("Access-Control-Expose-Headers","test");
              response.addHeader("test", "sdfdsfdsf");

axios.get('http://opm.eswincomputing.com:9090/user/page')
  .then(function (response) {
    console.log(response.headers);
  })
  .catch(function (error) {
    console.log(error.headers);
  });

lsof -i
lsof -i:8080：查看 8080 端口占用

# Application.yml
logging:
  level:
    com.eswincomputing.springboot: debug
# 使用
@Slf4j
@RestController
@RequestMapping("/patch-record")
public class PatchRecordController {

    @Resource
    private IPatchRecordService patchRecordServic
    log.info(version);
}

StrUtil.isBlank()

SELECT id FROM department WHERE organization_id = #{orgId}

Integer.parseInt(user.getDelFlag())

       
    <!-- json 解析 -->
    <dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>2.0.21</version>
    </dependency>
    
    
       JSONObject object = JSONObject.parseObject(patchRecord.getAttachmentList());
        String fileUID = object.getString("file_uid");
        String fileName = object.getString("file_name");

 String string = "张三，李四，王五，马六，小气";
        String substring = string.substring(0, string.length() - 1);
        System.out.println(substring);
        String[] split = substring.split(",");//以逗号分割
        for (String string2 : split) {
            System.out.println("数据-->>>" + string2);
        }