当前位置：首页 > news >正文

Docker 笔记（三）--容器

news 2026/2/9 0:17:58

Docker 笔记（三）–容器

记录Docker 安装操作记录，便于查询。

参考

链接: Docker 入门到实战教程(三)镜像和容器
链接: docker run中的-itd参数正确使用
链接: docker官方文档
链接: 阿里云Debian 镜像
链接: Debian 全球镜像站
链接: Debian/Ubuntu安装ps,ping,telnet,netstat命令

环境

Centos 7.9

操作

1.启动容器

[root@centos7-18 docker]# docker run -it hello-worldHello from Docker!
This message shows that your installation appears to be working correctly.To generate this message, Docker took the following steps:1. The Docker client contacted the Docker daemon.2. The Docker daemon pulled the "hello-world" image from the Docker Hub.(amd64)3. The Docker daemon created a new container from that image which runs theexecutable that produces the output you are currently reading.4. The Docker daemon streamed that output to the Docker client, which sent itto your terminal.To try something more ambitious, you can run an Ubuntu container with:$ docker run -it ubuntu bashShare images, automate workflows, and more with a free Docker ID:https://hub.docker.com/For more examples and ideas, visit:https://docs.docker.com/get-started/

-i: 交互式操作。
-t: 终端。
hello-world: 镜像名。

2.查看容器

[root@centos7-18 docker]# docker ps -a
CONTAINER ID   IMAGE         COMMAND                   CREATED              STATUS                      PORTS     NAMES
f3cb195bb73d   redis         "docker-entrypoint.s…"   About a minute ago   Exited (0) 47 seconds ago             goofy_cohen
075affeee29d   nginx         "/docker-entrypoint.…"   2 minutes ago        Exited (0) 2 minutes ago              adoring_ride
40da8fbb8f46   hello-world   "/hello"                  7 minutes ago        Exited (0) 7 minutes ago              boring_neumann
[root@centos7-18 docker]#

STATUS 显示容器的运行状态。注意！停止运行的容器并不会销毁，如果需要容器停止时销毁可以使用–rm 参数.

3.重启容器

[root@centos7-18 docker]# docker restart f3cb195bb73d
f3cb195bb73d
[root@centos7-18 docker]# docker ps
CONTAINER ID   IMAGE     COMMAND                   CREATED          STATUS          PORTS      NAMES
f3cb195bb73d   redis     "docker-entrypoint.s…"   18 minutes ago   Up 10 minutes   6379/tcp   goofy_cohen
[root@centos7-18 docker]#

4.后台运行

[root@centos7-18 docker]# docker images
REPOSITORY    TAG       IMAGE ID       CREATED         SIZE
nginx         latest    605c77e624dd   22 months ago   141MB
redis         latest    7614ae9453d1   23 months ago   113MB
hello-world   latest    feb5d9fea6a5   2 years ago     13.3kB
[root@centos7-18 docker]# 
[root@centos7-18 docker]# docker run -itd --name nginx-demo nginx:latest
74901d661a79a3116d49f6867d5a8e682feb7c9934482ada35a8bd78f01ff35b

-d 后台运行
–name 容器别名
nginx:latest 镜像名称:TAG

[root@centos7-18 docker]# docker ps
CONTAINER ID   IMAGE          COMMAND                   CREATED          STATUS          PORTS      NAMES
74901d661a79   nginx:latest   "/docker-entrypoint.…"   16 seconds ago   Up 14 seconds   80/tcp     nginx-demo
f3cb195bb73d   redis          "docker-entrypoint.s…"   30 minutes ago   Up 23 minutes   6379/tcp   goofy_cohen
[root@centos7-18 docker]#

5.停止运行

[root@centos7-18 docker]# docker stop f3cb195bb73d
f3cb195bb73d
[root@centos7-18 docker]# docker ps

6.进入容器

6.1 进入容器

docker exec -it “容器ID”或“容器名称”，可以使用容器ID或容器名称进入容器

[root@centos7-18 docker]# docker ps 
CONTAINER ID   IMAGE          COMMAND                   CREATED          STATUS          PORTS      NAMES
74901d661a79   nginx:latest   "/docker-entrypoint.…"   24 minutes ago   Up 24 minutes   80/tcp     nginx-demo
f3cb195bb73d   redis          "docker-entrypoint.s…"   55 minutes ago   Up 10 minutes   6379/tcp   goofy_cohen
[root@centos7-18 docker]# docker exec -it f3cb195bb73d /bin/bash
root@f3cb195bb73d:/data#

[root@centos7-18 docker]# docker ps
CONTAINER ID   IMAGE          COMMAND                   CREATED          STATUS          PORTS      NAMES
74901d661a79   nginx:latest   "/docker-entrypoint.…"   27 minutes ago   Up 27 minutes   80/tcp     nginx-demo
f3cb195bb73d   redis          "docker-entrypoint.s…"   57 minutes ago   Up 13 minutes   6379/tcp   goofy_cohen
[root@centos7-18 docker]# docker exec -it nginx-demo /bin/bash
root@74901d661a79:/#

6.2 查看信息

[root@centos7-18 ~]# docker ps
CONTAINER ID   IMAGE          COMMAND                   CREATED          STATUS          PORTS     NAMES
19f2fc32fc60   605c77e624dd   "/docker-entrypoint.…"   16 minutes ago   Up 16 minutes   80/tcp    charming_thompson
[root@centos7-18 ~]# docker exec -it 19f2fc32fc60 /bin/bash
root@19f2fc32fc60:/# uname -a
Linux 19f2fc32fc60 3.10.0-1160.6.1.el7.x86_64 #1 SMP Tue Nov 17 13:59:11 UTC 2020 x86_64 GNU/Linux
root@19f2fc32fc60:/# cat /etc/os-release 
PRETTY_NAME="Debian GNU/Linux 11 (bullseye)"
NAME="Debian GNU/Linux"
VERSION_ID="11"
VERSION="11 (bullseye)"
VERSION_CODENAME=bullseye
ID=debian
HOME_URL="https://www.debian.org/"
SUPPORT_URL="https://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"
root@19f2fc32fc60:/#

6.3 换debian源

查看当前源

root@19f2fc32fc60:/etc/apt# cat /etc/apt/sources.list
# deb http://snapshot.debian.org/archive/debian/20211220T000000Z bullseye main
deb http://deb.debian.org/debian bullseye main
# deb http://snapshot.debian.org/archive/debian-security/20211220T000000Z bullseye-security main
deb http://security.debian.org/debian-security bullseye-security main
# deb http://snapshot.debian.org/archive/debian/20211220T000000Z bullseye-updates main
deb http://deb.debian.org/debian bullseye-updates main
root@19f2fc32fc60:/etc/apt#

备份sources.list

root@19f2fc32fc60:/etc/apt# cp sources.list sources.list.bak

换阿里源

// 清空文件
root@19f2fc32fc60:/etc/apt# echo "">sources.list  
root@19f2fc32fc60:/etc/apt# cat sources.list

// 导入阿里源
root@19f2fc32fc60:/etc/apt# cat > sources.list << EOF
> deb https://mirrors.aliyun.com/debian/ bullseye main non-free contrib
> deb-src https://mirrors.aliyun.com/debian/ bullseye main non-free contrib
> deb https://mirrors.aliyun.com/debian-security/ bullseye-security main
> deb-src https://mirrors.aliyun.com/debian-security/ bullseye-security main
> deb https://mirrors.aliyun.com/debian/ bullseye-updates main non-free contrib
> deb-src https://mirrors.aliyun.com/debian/ bullseye-updates main non-free contrib
> deb https://mirrors.aliyun.com/debian/ bullseye-backports main non-free contrib
> deb-src https://mirrors.aliyun.com/debian/ bullseye-backports main non-free contrib
> EOF

或

root@19f2fc32fc60:/etc/apt# echo "
> deb https://mirrors.aliyun.com/debian/ bullseye main non-free contrib
> deb-src https://mirrors.aliyun.com/debian/ bullseye main non-free contrib
>  deb https://mirrors.aliyun.com/debian-security/ bullseye-security main
> deb-src https://mirrors.aliyun.com/debian-security/ bullseye-security main
> deb https://mirrors.aliyun.com/debian/ bullseye-updates main non-free contrib
> deb-src https://mirrors.aliyun.com/debian/ bullseye-updates main non-free contrib 
> deb https://mirrors.aliyun.com/debian/ bullseye-backports main non-free contrib 
> deb-src https://mirrors.aliyun.com/debian/ bullseye-backports main non-free contrib
> " > sources.list

// 请缓存，更新
root@19f2fc32fc60:/etc/apt# apt-get clean
root@19f2fc32fc60:/etc/apt# apt-get update
Hit:1 https://mirrors.aliyun.com/debian bullseye InRelease
Get:2 https://mirrors.aliyun.com/debian-security bullseye-security InRelease [48.4 kB]
Get:3 https://mirrors.aliyun.com/debian bullseye-updates InRelease [44.1 kB]
Get:4 https://mirrors.aliyun.com/debian bullseye-backports InRelease [49.0 kB]
Get:5 https://mirrors.aliyun.com/debian-security bullseye-security/main Sources [160 kB]
Get:6 https://mirrors.aliyun.com/debian-security bullseye-security/main amd64 Packages [258 kB]
Get:7 https://mirrors.aliyun.com/debian bullseye-updates/main Sources [7428 B]
Get:8 https://mirrors.aliyun.com/debian bullseye-updates/main amd64 Packages [17.7 kB]
Get:9 https://mirrors.aliyun.com/debian bullseye-backports/non-free Sources [4504 B]
Get:10 https://mirrors.aliyun.com/debian bullseye-backports/contrib Sources [4532 B]
Get:11 https://mirrors.aliyun.com/debian bullseye-backports/main Sources [386 kB]
Get:12 https://mirrors.aliyun.com/debian bullseye-backports/non-free amd64 Packages [13.9 kB]
Get:13 https://mirrors.aliyun.com/debian bullseye-backports/main amd64 Packages [404 kB]
Get:14 https://mirrors.aliyun.com/debian bullseye-backports/contrib amd64 Packages [5968 B]
Fetched 1403 kB in 1s (1170 kB/s)
Reading package lists... Done

6.4 安装包

root@19f2fc32fc60:/etc/apt# apt-get install -y procps vim net-tools inetutils-ping telnet

procps 进程管理工具 ps top
vim 文本编辑工具
net-tools 网络工具 netstat
inetutils-ping ping
telnet telnet

6.5 启动服务

启动nginx

root@19f2fc32fc60:/etc/nginx# /etc/init.d/nginx start
2023/11/17 04:16:13 [notice] 606#606: using the "epoll" event method
2023/11/17 04:16:13 [notice] 606#606: nginx/1.21.5
2023/11/17 04:16:13 [notice] 606#606: built by gcc 10.2.1 20210110 (Debian 10.2.1-6) 
2023/11/17 04:16:13 [notice] 606#606: OS: Linux 3.10.0-1160.6.1.el7.x86_64
2023/11/17 04:16:13 [notice] 606#606: getrlimit(RLIMIT_NOFILE): 1048576:1048576
2023/11/17 04:16:13 [notice] 607#607: start worker processes
2023/11/17 04:16:13 [notice] 607#607: start worker process 608
2023/11/17 04:16:13 [notice] 607#607: start worker process 609

查看进程和端口

root@19f2fc32fc60:/etc/nginx# ps -ef
UID        PID  PPID  C STIME TTY          TIME CMD
root         1     0  0 04:04 pts/0    00:00:00 /bin/bash
root         7     0  0 04:04 pts/1    00:00:00 bash
root       607     0  0 04:16 ?        00:00:00 nginx: master process /usr/sbin/nginx -c /etc/nginx/nginx.conf
nginx      608   607  0 04:16 ?        00:00:00 nginx: worker process
nginx      609   607  0 04:16 ?        00:00:00 nginx: worker process
root       610     7  0 04:16 pts/1    00:00:00 ps -ef
root@19f2fc32fc60:/etc/nginx# netstat -ntlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      607/nginx: master p 
root@19f2fc32fc60:/etc/nginx#

7.容器快照

7.1 导出快照

[root@centos7-18 docker]# docker export 74901d661a79 > nginx-demo.tar
[root@centos7-18 docker]# ls
daemon.json  nginx-demo.tar

7.2 导入快照

[root@centos7-18 docker]# docker import nginx-demo.tar nginx-demo:1.0
sha256:c2c8866bef605d74ac27fa1f671803139d09f4b9483f7d2312928036323be955

[root@centos7-18 docker]# docker images nginx-demo:1.0
REPOSITORY   TAG       IMAGE ID       CREATED         SIZE
nginx-demo   1.0       c2c8866bef60   3 minutes ago   140MB
[root@centos7-18 docker]#

注意！导入的快照是镜像。

8.删除容器

8.1 删除停止的容器

docker rm “容器ID”

[root@centos7-18 docker]# docker ps -a
CONTAINER ID   IMAGE         COMMAND                   CREATED       STATUS                   PORTS      NAMES
f3cb195bb73d   redis         "docker-entrypoint.s…"   2 hours ago   Up 57 minutes            6379/tcp   goofy_cohen
075affeee29d   nginx         "/docker-entrypoint.…"   2 hours ago   Exited (0) 2 hours ago              adoring_ride
40da8fbb8f46   hello-world   "/hello"                  2 hours ago   Exited (0) 2 hours ago              boring_neumann
[root@centos7-18 docker]# docker rm 40da8fbb8f46
40da8fbb8f46

8.2 强制删除容器

docker rm -f “容器ID”

[root@centos7-18 docker]# docker ps
CONTAINER ID   IMAGE          COMMAND                   CREATED             STATUS          PORTS      NAMES
74901d661a79   nginx:latest   "/docker-entrypoint.…"   55 minutes ago      Up 55 minutes   80/tcp     nginx-demo
f3cb195bb73d   redis          "docker-entrypoint.s…"   About an hour ago   Up 41 minutes   6379/tcp   goofy_cohen
[root@centos7-18 docker]# docker rm -f 74901d661a79
74901d661a79

8.3 清除所有停止容器

docker container prune

[root@centos7-18 docker]# docker ps -a
CONTAINER ID   IMAGE         COMMAND                   CREATED          STATUS                      PORTS     NAMES
d4d7b7b33e22   hello-world   "/hello"                  31 seconds ago   Exited (0) 31 seconds ago             quizzical_banach
f3cb195bb73d   redis         "docker-entrypoint.s…"   2 hours ago      Exited (0) 4 seconds ago              goofy_cohen
075affeee29d   nginx         "/docker-entrypoint.…"   2 hours ago      Exited (0) 2 hours ago                adoring_ride
[root@centos7-18 docker]# docker container prune 
WARNING! This will remove all stopped containers.
Are you sure you want to continue? [y/N] y
Deleted Containers:
d4d7b7b33e224d0a757ac2a2dd70ff69bf95bfcf584f0c413d774a1382d98355
f3cb195bb73dfb23a0eca591572b97505d57af5afa9880171836285ea5483b3d
075affeee29db528f9c267f3f8ee6263d9aad39f6da9766a91b39a0b2bf5913dTotal reclaimed space: 1.098kB
[root@centos7-18 docker]# docker ps -a
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES
[root@centos7-18 docker]#

9.容器命令

9.1 查询容器内进程

docker top “容器ID”

[root@centos7-18 ~]# docker top 19f2fc32fc60
UID                 PID                 PPID                C                   STIME               TTY                 TIME                CMD
root                21175               21156               0                   13:42               pts/0               00:00:00            /bin/bash
root                21224               21156               0                   13:42               ?                   00:00:00            bash
root                22502               21156               0                   13:53               ?                   00:00:00            nginx: master process /usr/sbin/nginx -c /etc/nginx/nginx.conf
101                 22503               22502               0                   13:53               ?                   00:00:00            nginx: worker process
101                 22504               22502               0                   13:53               ?                   00:00:00            nginx: worker process
[root@centos7-18 ~]#

9.2查询容器信息

docker inspect “容器ID”

[root@centos7-18 ~]# docker inspect 19f2fc32fc60
[{"Id": "19f2fc32fc604c6b827aa7331df97f059fd85f3792e3d7ac1ffe54e0721ec5bd","Created": "2023-11-15T18:24:24.634633348Z","Path": "/docker-entrypoint.sh","Args": ["/bin/bash"],"State": {"Status": "running","Running": true,"Paused": false,"Restarting": false,"OOMKilled": false,"Dead": false,"Pid": 21175,"ExitCode": 0,"Error": "","StartedAt": "2023-11-17T04:04:20.933228283Z","FinishedAt": "2023-11-17T04:04:09.311054875Z"},"Image": "sha256:605c77e624ddb75e6110f997c58876baa13f8754486b461117934b24a9dc3a85","ResolvConfPath": "/var/lib/docker/containers/19f2fc32fc604c6b827aa7331df97f059fd85f3792e3d7ac1ffe54e0721ec5bd/resolv.conf","HostnamePath": "/var/lib/docker/containers/19f2fc32fc604c6b827aa7331df97f059fd85f3792e3d7ac1ffe54e0721ec5bd/hostname","HostsPath": "/var/lib/docker/containers/19f2fc32fc604c6b827aa7331df97f059fd85f3792e3d7ac1ffe54e0721ec5bd/hosts","LogPath": "/var/lib/docker/containers/19f2fc32fc604c6b827aa7331df97f059fd85f3792e3d7ac1ffe54e0721ec5bd/19f2fc32fc604c6b827aa7331df97f059fd85f3792e3d7ac1ffe54e0721ec5bd-json.log","Name": "/charming_thompson","RestartCount": 0,"Driver": "overlay2","Platform": "linux","MountLabel": "","ProcessLabel": "","AppArmorProfile": "","ExecIDs": ["d8e103024ca2b38387871139f75a1f9b6f0f59e47a962c17837192c6b71fbeb2"],"HostConfig": {"Binds": null,"ContainerIDFile": "","LogConfig": {"Type": "json-file","Config": {}},"NetworkMode": "default","PortBindings": {},"RestartPolicy": {"Name": "no","MaximumRetryCount": 0},"AutoRemove": false,"VolumeDriver": "","VolumesFrom": null,"ConsoleSize": [79,204],"CapAdd": null,"CapDrop": null,"CgroupnsMode": "host","Dns": [],"DnsOptions": [],"DnsSearch": [],"ExtraHosts": null,"GroupAdd": null,"IpcMode": "private","Cgroup": "","Links": null,"OomScoreAdj": 0,"PidMode": "","Privileged": false,"PublishAllPorts": false,"ReadonlyRootfs": false,"SecurityOpt": null,"UTSMode": "","UsernsMode": "","ShmSize": 67108864,"Runtime": "runc","Isolation": "","CpuShares": 0,"Memory": 0,"NanoCpus": 0,"CgroupParent": "","BlkioWeight": 0,"BlkioWeightDevice": [],"BlkioDeviceReadBps": [],"BlkioDeviceWriteBps": [],"BlkioDeviceReadIOps": [],"BlkioDeviceWriteIOps": [],"CpuPeriod": 0,"CpuQuota": 0,"CpuRealtimePeriod": 0,"CpuRealtimeRuntime": 0,"CpusetCpus": "","CpusetMems": "","Devices": [],"DeviceCgroupRules": null,"DeviceRequests": null,"MemoryReservation": 0,"MemorySwap": 0,"MemorySwappiness": null,"OomKillDisable": false,"PidsLimit": null,"Ulimits": null,"CpuCount": 0,"CpuPercent": 0,"IOMaximumIOps": 0,"IOMaximumBandwidth": 0,"MaskedPaths": ["/proc/asound","/proc/acpi","/proc/kcore","/proc/keys","/proc/latency_stats","/proc/timer_list","/proc/timer_stats","/proc/sched_debug","/proc/scsi","/sys/firmware","/sys/devices/virtual/powercap"],"ReadonlyPaths": ["/proc/bus","/proc/fs","/proc/irq","/proc/sys","/proc/sysrq-trigger"]},"GraphDriver": {"Data": {"LowerDir": "/var/lib/docker/overlay2/6f4c29ffd5260d59159a5af2d29812b28cbe65eee2a38dce757709851586261d-init/diff:/var/lib/docker/overlay2/fd8c77083cd9b2c0c9bd36ecf8ade515986d4d9cf536abea70ecb0440fed2907/diff:/var/lib/docker/overlay2/8b0be5030647522bf7b1b39db844d8c650bd8133a00ac05b330879de438c0abb/diff:/var/lib/docker/overlay2/563d515cbd4227114e7adeb014737ce26c3238a9e54135141519c5870470a0e0/diff:/var/lib/docker/overlay2/690c4f6a17cb8cf1aabe042511f57c198281895336138ac474117c60a879cc30/diff:/var/lib/docker/overlay2/3de8af079b18dd20b726da9ce7a91836810e1effd694cc39cccfc63925626d2c/diff:/var/lib/docker/overlay2/b04d78c79c57a4b680bf3f66c56a33b683fd632182f630835ec67d3a400ff965/diff","MergedDir": "/var/lib/docker/overlay2/6f4c29ffd5260d59159a5af2d29812b28cbe65eee2a38dce757709851586261d/merged","UpperDir": "/var/lib/docker/overlay2/6f4c29ffd5260d59159a5af2d29812b28cbe65eee2a38dce757709851586261d/diff","WorkDir": "/var/lib/docker/overlay2/6f4c29ffd5260d59159a5af2d29812b28cbe65eee2a38dce757709851586261d/work"},"Name": "overlay2"},"Mounts": [],"Config": {"Hostname": "19f2fc32fc60","Domainname": "","User": "","AttachStdin": false,"AttachStdout": false,"AttachStderr": false,"ExposedPorts": {"80/tcp": {}},"Tty": true,"OpenStdin": true,"StdinOnce": false,"Env": ["PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin","NGINX_VERSION=1.21.5","NJS_VERSION=0.7.1","PKG_RELEASE=1~bullseye"],"Cmd": ["/bin/bash"],"Image": "605c77e624dd","Volumes": null,"WorkingDir": "","Entrypoint": ["/docker-entrypoint.sh"],"OnBuild": null,"Labels": {"maintainer": "NGINX Docker Maintainers <docker-maint@nginx.com>"},"StopSignal": "SIGQUIT"},"NetworkSettings": {"Bridge": "","SandboxID": "67599d6da2920c16fdd15cfd5f542d3e042db4b126c861e31e9ab52409560be6","HairpinMode": false,"LinkLocalIPv6Address": "","LinkLocalIPv6PrefixLen": 0,"Ports": {"80/tcp": null},"SandboxKey": "/var/run/docker/netns/67599d6da292","SecondaryIPAddresses": null,"SecondaryIPv6Addresses": null,"EndpointID": "6a6b8ab5da195f7ef44743be09f5514c89382d0815f69e8a5f607656875588d6","Gateway": "172.17.0.1","GlobalIPv6Address": "","GlobalIPv6PrefixLen": 0,"IPAddress": "172.17.0.2","IPPrefixLen": 16,"IPv6Gateway": "","MacAddress": "02:42:ac:11:00:02","Networks": {"bridge": {"IPAMConfig": null,"Links": null,"Aliases": null,"NetworkID": "2aff696bbb5ba0e6590490d461a8cf35c95f47fee567faa6806a07e680edad0b","EndpointID": "6a6b8ab5da195f7ef44743be09f5514c89382d0815f69e8a5f607656875588d6","Gateway": "172.17.0.1","IPAddress": "172.17.0.2","IPPrefixLen": 16,"IPv6Gateway": "","GlobalIPv6Address": "","GlobalIPv6PrefixLen": 0,"MacAddress": "02:42:ac:11:00:02","DriverOpts": null}}}}
]

9.3查询容器日志

docker logs “容器ID”或“容器名称”

[root@centos7-18 ~]# docker  logs  19f2fc32fc60

  // 实时日志
[root@centos7-18 ~]# docker  logs  -f 19f2fc32fc60

  // 从某一时间开始的日志
[root@centos7-18 ~]# docker logs -t --since="2023-11-08T10:00:00"  19f2fc32fc60

  // 30分钟日志
[root@centos7-18 ~]# docker  logs  --since 30m 19f2fc32fc60

Docker 笔记（三）--容器

Docker 笔记（三）–容器记录Docker 安装操作记录，便于查询。参考链接: Docker 入门到实战教程(三)镜像和容器链接: docker run中的-itd参数正确使用链接: docker官方文档链接: 阿里云Debian 镜像链接: Debian 全球镜像站链接: Debian/Ub…...

编程日记 2023/11/19 17:24:20

一、gd32f103的PA15问题 1、 #define GPIO_SWJ_NONJTRST_REMAP ((uint32_t)0x00300100U) /*!< full SWJ(JTAG-DP SW-DP),but without NJTRST */ #define GPIO_SWJ_SWDPENABLE_REMAP ((uint32_t)0x00300200U) /*!< JTAG-DP disabled and SW-DP enab…...

编程日记 2023/11/19 17:23:18

QT小记：警告Use multi-arg instead

"Use multi-arg instead" 是一个提示，建议使用 QObject::tr() 函数的多参数版本来处理多个占位符，而不是使用单参数版本。在 Qt 中，tr() 是用于进行文本翻译（国际化）的函数。它允许你在应用程序中使用多种…...

编程日记 2023/11/19 17:22:18

皮肤性病科专家谭巍主任提出HPV转阴后饮食七点建议

HPV转阴是每一位感染者都期盼的，因为转阴所以健康，只有转为阴性才意味着不具备传染性，从此也不必再害怕将病毒传染给家人的风险，也不必再担忧持续感染而引发的健康风险。总之，HPV转阴是预示感染者恢复健康与否的主要标…...

编程日记 2023/11/19 17:18:14

快速弄懂C++中的智能指针

智能指针是C中的一个对象，它的行为类似于指针，但它提供了自动的内存管理功能。当智能指针超出作用域时（比如说在函数中使用智能指针指向了一个对象，当该函数结束时会自动销毁该对象），它会自动删除其所指向的…...

编程日记 2023/11/19 17:17:12

C#调用C++ dll教程

文章目录一、创建C dll项目二、C#程序员调用C dll三、C与C#数据类型对应基本数据类型对应表C指针类型与C#类型在使用C#开发客户端时，有时需要调用C dll，本篇博客来介绍C#程序如何调用C dll。一、创建C dll项目首先使用VS2022创建C dll项目&#xf…...

编程日记 2023/11/19 17:16:11

计算机毕设深度学习大数据股票预测系统 - python lstm

文章目录 0 前言1 课题意义1.1 股票预测主流方法 2 什么是LSTM2.1 循环神经网络2.1 LSTM诞生 2 如何用LSTM做股票预测2.1 算法构建流程2.2 部分代码 3 实现效果3.1 数据3.2 预测结果项目运行展示开发环境数据获取最后 0 前言 🔥 这两年开始毕业设计和毕业答辩的要…...

编程日记 2023/11/19 17:14:08

97.qt qml-自定义Table之实现ctrl与shift多选

我们之前实现了：93.qt qml-自定义Table优化(新增：水平拖拽/缩放自适应/选择使能/自定义委托)-CSDN博客实现选择使能的时候，我们只能一行行去点击选中，非常麻烦，所以本章我们实现ctrl多选与shift多选、所以在Table控件新增两个属性： 1.实现介绍 ctrl多选实现原理：当我…...

编程日记 2023/11/19 17:13:07

运行软件报错mfc140.dll丢失？分享mfc140.dll丢失的解决方法

小伙伴们，你是否也有过这样的经历：每当碰到诸如" mfc140.dll 丢失 "之类的烦人错误时，你是不是会一头雾水，完全不知道从何下手去解决？不要担心，接下来咱就给你提供这样一篇实用教程，教…...

编程日记 2023/11/19 17:11:04

milvus数据库-连接

Milvus 支持 19530 和 9091 两个端口： 端口 19530 用于 gRPC 和 RESTful API。这是您使用不同 Milvus SDK 或 HTTP 客户端连接到 Milvus 服务器时的默认端口。端口 9091 用于 Kubernetes 内的指标收集、pprof 分析和运行状况探测。它用作管理端口。 1.连接到数…...

编程日记 2023/11/19 17:10:03

ios + vue3 Teleport + inset 兼容性问题

目录 1，问题表现2，解决步骤1，teleport 的问题2，inset 的问题3，teleport 的问题之二 1，问题表现使用 vue3 的 Teleport 实现的 dialog 弹窗，但是在 ios app 中嵌套的 h5 中无法打开。直接在io…...

编程日记 2023/11/19 17:09:02

计蒜客T1654 数列分段（C语言实现）

【题目描述】对于给定的一个长度为n的正整数数列ai，现要将其分成连续的若干段，并且每段和不超过m（可以等于m），问最少能将其分成多少段使得满足要求。【输入格式】第一行包含两个正整数n，m，表示…...

编程日记 2023/11/19 17:08:01

Linux进程——system函数、popen函数

system函数（执行shell 命令） 头文件 #include <stdlib.h> 函数定义 int system(const char * string); 函数说明 system()会调用fork()产生子进程，由子进程来调用/bin/sh-c string来执行参数string字符串所代表的命令，…...

编程日记 2023/11/19 17:06:59

【智能家居】5、主流程设计以及外设框架编写与测试

目录一、主流程设计 1、工厂模式结构体定义 （1）指令工厂 inputCmd.h （2）外设工厂 controlDevices.h 二、外设框架编写 1、创建外设工厂对象bathroomLight 2、编写相关函数框架 3、将浴室灯相关操作插入外设工厂链表等待被调…...

编程日记 2023/11/19 17:05:58

详解ssh远程登录服务

华子目录简介概念功能分类文字接口图形接口文字接口ssh连接服务器浅浅介绍一下加密技术凯撒加密加密分类对称加密非对称加密非对称加密方法（也叫公钥加密） ssh两大类认证方式：连接加密技术简介密钥解析 ssh工作过程版本协商阶段密钥和算法…...

编程日记 2023/11/19 17:04:57

LangChain 3使用Agent访问Wikipedia和llm-math计算狗的平均年龄

接着前两节的Langchain，继续实现Langchain中的Agent LangChain 实现给动物取名字，LangChain 2模块化prompt template并用streamlit生成网站实现给动物取名字代码实现 # 从langchain库中导入模块 from langchain.llms import OpenAI # 从langchain.l…...

编程日记 2023/11/19 17:03:57

wpf devexpress绑定grid到总计和分组统计

此主题描述了如何在gridcontrol中的视图模型和显示定义总计和分组统计在视图模型中指定统计 1、创建 SummaryItemType 枚举你想要在GridControl中显示的统计类型： public enum SummaryItemType { Max, Count, None } 2、创建一个grid统计描述类 public class S…...

编程日记 2023/11/19 17:02:55

嵌入式 Linux 移植与系统启动方法

1、Linux系统启动与U-Boot 所谓移植就是把程序代码从一种运行环境转移到另一种运行环境。对于内核移植来说，主要是从一种硬件平台转移到另一种硬件平台上运行。体系结构级别的移植是指在不同体系结构平台上Linux内核的移植，例如，在ARM、MI…...

编程日记 2023/11/19 17:00:53

代码随想录算法训练营|五十六天

回文子串 647. 回文子串 - 力扣（LeetCode） dp含义：表示区间内[i,j]是否有回文子串，有true，没有false。递推公式：当s[i]和s[j]不相等，false；相等时，情况一，…...

编程日记 2023/11/19 16:57:50

基于django水果蔬菜生鲜销售系统

基于django水果蔬菜生鲜销售系统摘要基于Django的水果蔬菜生鲜销售系统是一种利用Django框架开发的电子商务平台，旨在提供高效、便捷的购物体验，同时支持水果蔬菜生鲜产品的在线销售。该系统整合了用户管理、产品管理、购物车、订单管理等核心功能&…...

编程日记 2023/11/19 16:55:49

XML Group端口详解

在XML数据映射过程中，经常需要对数据进行分组聚合操作。例如，当处理包含多个物料明细的XML文件时，可能需要将相同物料号的明细归为一组，或对相同物料号的数量进行求和计算。传统实现方式通常需要编写脚本代码，增加了开…...

编程新知 2026/2/8 4:37:34

谷歌浏览器插件

项目中有时候会用到插件 sync-cookie-extension1.0.0：开发环境同步测试 cookie 至 localhost，便于本地请求服务携带 cookie 参考地址：https://juejin.cn/post/7139354571712757767 里面有源码下载下来，加在到扩展即可使用FeHelp…...

编程新知 2025/8/16 3:55:30

业务系统对接大模型的基础方案：架构设计与关键步骤

业务系统对接大模型：架构设计与关键步骤在当今数字化转型的浪潮中，大语言模型（LLM）已成为企业提升业务效率和创新能力的关键技术之一。将大模型集成到业务系统中，不仅可以优化用户体验，还能为业务决策提供…...

编程新知 2026/2/8 4:53:03

7.4.分块查找

一.分块查找的算法思想： 1.实例： 以上述图片的顺序表为例， 该顺序表的数据元素从整体来看是乱序的，但如果把这些数据元素分成一块一块的小区间， 第一个区间[0,1]索引上的数据元素都是小于等于10的， 第二…...

编程新知 2026/2/8 20:43:02

Vue3 + Element Plus + TypeScript中el-transfer穿梭框组件使用详解及示例

使用详解 Element Plus 的 el-transfer 组件是一个强大的穿梭框组件，常用于在两个集合之间进行数据转移，如权限分配、数据选择等场景。下面我将详细介绍其用法并提供一个完整示例。核心特性与用法基本属性 v-model：绑定右侧列表的值&…...

编程新知 2026/2/4 4:25:40

中医有效性探讨

文章目录西医是如何发展到以生物化学为药理基础的现代医学？传统医学奠基期（远古 - 17 世纪）近代医学转型期（17 世纪 - 19 世纪末）现代医学成熟期（20世纪至今） 中医的源远流长和一脉相承远古至…...

编程新知 2026/1/23 7:56:54

用神经网络读懂你的“心情”：揭秘情绪识别系统背后的AI魔法

用神经网络读懂你的“心情”：揭秘情绪识别系统背后的AI魔法大家好，我是Echo_Wish。最近刷短视频、看直播，有没有发现，越来越多的应用都开始“懂你”了——它们能感知你的情绪，推荐更合适的内容，甚至帮客服识别用户情绪，提升服务体验。这背后，神经网络在悄悄发力，撑起…...

编程新知 2025/12/18 22:11:53

云原生安全实战：API网关Envoy的鉴权与限流详解

🔥「炎码工坊」技术弹药已装填！ 点击关注 → 解锁工业级干货【工具实测|项目避坑|源码燃烧指南】一、基础概念 1. API网关作为微服务架构的统一入口，负责路由转发、安全控制、流量管理等核心功能。 2. Envoy 由Lyft开源的高性能云原生…...

编程新知 2026/2/8 3:38:05

【Ftrace 专栏】Ftrace 参考博文

ftrace、perf、bcc、bpftrace、ply、simple_perf的使用Ftrace 基本用法Linux 利用 ftrace 分析内核调用如何利用ftrace精确跟踪特定进程调度信息使用 ftrace 进行追踪延迟Linux-培训笔记-ftracehttps://www.kernel.org/doc/html/v4.18/trace/events.htmlhttps://blog.csdn.net/…...

编程新知 2026/1/20 3:30:27

五、jmeter脚本参数化

目录 1、脚本参数化 1.1 用户定义的变量 1.1.1 添加及引用方式 1.1.2 测试得出用户定义变量的特点 1.2 用户参数 1.2.1 概念 1.2.2 位置不同效果不同 1.2.3、用户参数的勾选框 - 每次迭代更新一次总结用户定义的变量、用户参数 1.3 csv数据文件参数化 1、脚本参数化 …...

编程新知 2026/1/26 19:39:14