two8g

Vim Cheat Sheet

Wed, 09 Nov 2022 00:00:00 +0000

1.vim cheat sheet on duckduckgo
2.Vim Cheat Sheet
3.vim cheatsheets on github

Vim

Content

Global
Cursor movement
Insert mode
Editing
Marking text (visual mode)
Visual commands

Global

:h[elp] keyword - open help for keyword
:sav[eas] file - save file as
:clo[se] - close current pane
:ter[minal] - open a terminal window
K - open man page for word under the cursor

Cursor movement

h - move cursor left
j - move cursor down
k - move cursor up
l - move cursor right
gj - move cursor down (multi-line text)
gk - move cursor up (multi-line text)
H - move to top of screen
M - move to middle of screen
L - move to bottom of screen
w - jump forwards to the start of a word
W - jump forwards to the start of a word (words can contain punctuation)
e - jump forwards to the end of a word
E - jump forwards to the end of a word (words can contain punctuation)
b - jump backwards to the start of a word
B - jump backwards to the start of a word (words can contain punctuation)
ge - jump backwards to the end of a word
gE - jump backwards to the end of a word (words can contain punctuation)
% - move to matching character (default supported pairs: ‘()’, ‘{}’, ‘[]’ - use :h matchpairs in vim for more info)
0 - jump to the start of the line
^ - jump to the first non-blank character of the line
$ - jump to the end of the line
g_ - jump to the last non-blank character of the line
gg - go to the first line of the document
G - go to the last line of the document
5gg or 5G - go to line 5
gd - move to local declaration
gD - move to global declaration
fx - jump to next occurrence of character x
tx - jump to before next occurrence of character x
Fx - jump to the previous occurrence of character x
Tx - jump to after previous occurrence of character x
; - repeat previous f, t, F or T movement
, - repeat previous f, t, F or T movement, backwards
} - jump to next paragraph (or function/block, when editing code)
{ - jump to previous paragraph (or function/block, when editing code)
zz - center cursor on screen
Ctrl + e - move screen down one line (without moving cursor)
Ctrl + y - move screen up one line (without moving cursor)
Ctrl + b - move back one full screen
Ctrl + f - move forward one full screen
Ctrl + d - move forward 1/2 a screen
Ctrl + u - move back 1/2 a screen

Tip Prefix a cursor movement command with a number to repeat it. For example, 4j moves down 4 lines.

Insert mode

i - insert before the cursor
I - insert at the beginning of the line
a - insert (append) after the cursor
A - insert (append) at the end of the line
o - append (open) a new line below the current line
O - append (open) a new line above the current line
ea - insert (append) at the end of the word
Ctrl + h - delete the character before the cursor during insert mode
Ctrl + w - delete word before the cursor during insert mode
Ctrl + j - begin new line during insert mode
Ctrl + t - indent (move right) line one shiftwidth during insert mode
Ctrl + d - de-indent (move left) line one shiftwidth during insert mode
Ctrl + n - insert (auto-complete) next match before the cursor during insert mode
Ctrl + p - insert (auto-complete) previous match before the cursor during insert mode
Ctrl + rx - insert the contents of register x
Ctrl + ox - Temporarily enter normal mode to issue one normal-mode command x.
Esc - exit insert mode

Editing

r - replace a single character.
R - replace more than one character, until ESC is pressed.
J - join line below to the current one with one space in between
gJ - join line below to the current one without space in between
gwip - reflow paragraph
g~ - switch case up to motion
gu - change to lowercase up to motion
gU - change to uppercase up to motion
cc - change (replace) entire line
c$ or C - change (replace) to the end of the line
ciw - change (replace) entire word
cw or ce - change (replace) to the end of the word
s - delete character and substitute text
S - delete line and substitute text (same as cc)
xp - transpose two letters (delete and paste)
u - undo
U - restore (undo) last changed line
Ctrl + r - redo
. - repeat last command

Marking text (visual mode)

v - start visual mode, mark lines, then do a command (like y-yank)
V - start linewise visual mode
o - move to other end of marked area
Ctrl + v - start visual block mode
O - move to other corner of block
aw - mark a word
ab - a block with ()
aB - a block with {}
at - a block with <> tags
ib - inner block with ()
iB - inner block with {}
it - inner block with <> tags
Esc - exit visual mode

Tip Instead of b or B one can also use ( or { respectively.

Visual commands

> - shift text right
< - shift text left
y - yank (copy) marked text
d - delete marked text
~ - switch case
u - change marked text to lowercase
U - change marked text to uppercase

Pwa Aia

Fri, 27 Oct 2017 00:00:00 +0000

Native or Web?

Native: Android Apps iOS Apps PC Apps Android Instant Apps Wed: PC Web PWA WXApp(微信小程序)

一起来探讨探讨前端的微信小程序，PWA(Progressive Web Apps)，AIA(Android Instant Apps)

回顾

2013年8月，微信公众平台更新，推出服务号。 2016年9月微信小程序内测，11月开发公测。

2017年1月微信小程序

细说

Progressive Web Apps

PWA是Google提出的一种新用户体验的web应用形态。 2015年6月 Alex Russell的一篇博客Progressive Web Apps: Escaping Tabs Without Losing Our Soul

此类应用包含TLS, Service Workers, Manifests, and Responsive Design特性.

讨论

https://developers.google.com/web/progressive-web-apps/ https://developer.android.com/topic/instant-apps/index.html https://infrequently.org/2015/06/progressive-apps-escaping-tabs-without-losing-our-soul/ http://harttle.com/2017/01/28/pwa-explore.html https://www.clickz.com/progressive-web-apps-versus-android-instant-apps-which-is-better-for-brands/111446/

Github Pages

Tue, 24 Oct 2017 00:00:00 +0000

Github Pages

Github提供的个人或者项目站点功能。

站点内容托管在Github仓库，使用者只需编辑，提交修改，网站自动上线。

每个账号或组织可拥有一个个人/组织站点，无限制个数的项目站点。

个人/组织站点

项目仓库以account.github.io或者organization.github.io命名

项目站点

项目站点可以选择主题创建或者直接创建

选择Github提供的主题创建，加入Github项目的Settings,在GitHub Pages板块选择主题然后编辑页面内容。

Github Pages的主题都是通过Jekyll生成的。

已知站点主题使用者：

Architect主题: HikariCP

MQ And Domain Event

Wed, 19 Apr 2017 00:00:00 +0000

消息队列与领域事件

消息队列

两种模式

Point-ti-Point: Queue (点对点：队列)
Pub/Sub: Topic (发布/订阅：主题)

（非）持久订阅

发布/订阅分为非持久订阅(Redis pub/sub)和持久订阅(ActiveMQ). 持久订阅：发布者在订阅者处于非活动状态时发布的消息，将在订阅者再次处于活跃状态时重新发布。

Point-to-Point	Pub/Sub
一个消费者(不可重复消费)	多个订阅者(可重复消费)
拉模式(懒/轮询)	推模型
异步	“同步”
生成-消费队列	观察者

领域事件

消息队列和事件驱动有密不可分的关系。

领域事件（Domain Events）是领域驱动设计（Domain Driven Design，DDD）中的一个概念。

在DDD中有一条原则：一个业务用例对应一个事务，一个事务对应一个聚合根，也即在一次事务中，只能对一个聚合根进行操作。

在DDD中有一条原则：一个业务用例对应一个事务，一个事务对应一个聚合根，也即在一次事务中，只能对一个聚合根进行操作。但是在实际应用中，我们经常发现一个用例需要修改多个聚合根的情况，并且不同的聚合根还处于不同的限界上下文中。比如，当你在电商网站上买了东西之后，你的积分会相应增加。这里的购买行为可能被建模为一个订单（Order）对象，而积分可以建模成账户（Account）对象的某个属性，订单和账户均为聚合根，并且分别属于订单系统和账户系统。显然，我们需要在订单和积分之间维护数据一致性，通常的做法是在同一个事务中同时更新两者，但是这会存在以下问题：

违背DDD中”单个事务修改单个聚合根”的设计原则；
需要在不同的系统之间采用重量级的分布式事务（Distributed Transactioin，也叫XA事务或者全局事务）；
在不同系统之间产生强耦合。

通过引入领域事件，我们可以很好地解决上述问题。 总的来说，领域事件给我们带来以下好处：

解耦微服务（限界上下文）；
帮助我们深入理解领域模型；
提供审计和报告的数据来源；
迈向事件溯源（Event Sourcing）和CQRS等。

领域事件

Object

Wed, 29 Mar 2017 00:00:00 +0000

Object的getClass方法

Object类是所有类层级的根,包括数组.

主要定义的方法有getClass、hashCode、equals、clone,toString:

public class Object{
    public final native Class<?> getClass();
    public native int hashCode();
    public boolean equals(Object obj) {
            return (this == obj);
        }
    protected native Object clone() throws CloneNotSupportedException;
    public String toString() {
        return getClass().getName() + "@" + Integer.toHexString(hashCode());
    }
}

其中hashCode、equals,toString都通过java代码提供实现.而getClass、clone是native,即由平台相关代码实现,其中getClass是final的.

下面依次讨论上面5个方法.

getClass方法

getClass方法定义如下

public final native Class<?> getClass();

该方法获取的是Obejct的运行时的class,返回的一个Class对象,如何一个Obejct都关联一个java.lang.Class的实例的引用. 另外注意Class<?>的形式.实际表示是Class<? extends |X|>,其实. 其中|X|是对象的static type()的类型擦除结果.

这里设计两个概念static type和类型擦除. 先说static type,

static type字面理解即静态类型,那上面是静态类型呢?既然有静态类型,那是不是还有动态类型呢?

首先要指出,static type确切的说是compile-time type指编译时类型.而dynamic type(动态类型)是runtime type指运行时类型. 注意千万不要和静态类型语言和动态类型语言概念(两种语言分类)混淆.所以我们改用compile-time type和runtime type进行说明,避免混淆. 不过这里的static type与静态类型语言也有点关系. (我对这理解还不够深入,大家最好看看权威文档. 我主要参考了这个讨论)

Java is a statically typed language, so the compiler will attempt to determine the types of everything and make sure that everything is type safe. Unfortunately static type inference is inherently limited. The compiler has to be conservative, and is also unable to see runtime information. Therefore, it will be unable to prove that certain code is typesafe, even if it really is.

意思是说,JAVA是静态类型语言.所以编译器需要尝试确认所有东西的的类型来保证类型安全.但是,静态类型语言的推到是有一定限制的.编译器采取保守手段, 它无法获得运行时信息. 所以, 编译器无法保证代码的类型安全, 即使代码确实是安全的.

The run time type refers to the actual type of the variable at runtime. As the programmer, you hopefully know this better than the compiler, so you can suppress warnings when you know that it is safe to do so.

运行时类型是指,代码时间运行时的类型. 作为程序员,你希望比编译器更好的清除代码,所以,当你知道代码是类型安全的时候你可以屏蔽警告.

我的理解是. compile-time type就是我们声明参数或变量时的类型.而runtime type就是实际运行时对象的真实类型. 而getClass方法返回的参数类型的只能是compile-time type. 因为前面说的,编译器获取不到运行时信息. 所以在使用getClass方法时,这样写是正确的:

List<Integer> integerList = new ArrayList<>();
Class<? extends List> integerListClass = integerList.getClass();
ArrayList<Integer> integerList_1 = new ArrayList<>();
Class<? extends ArrayList> integerListClass_1 = integerList_1.getClass();

而下面这样的写法,是无法编译通过的.

List<Integer> integerList = new ArrayList<>();
Class<? extends ArrayList> integerListClass = integerList.getClass();

理解了上面的静态类型和动态类型就非常容易理解JAVA面向对象的多态特性,以及类型转换知识.

然后说说类型擦除.类型擦除是JAVA泛型支持特性的知识.

Java泛型（generics）是JDK 5中引入的一个新特性，允许在定义类和接口的时候使用类型参数（type parameter）。声明的类型参数在使用时用具体的类型来替换。泛型最主要的应用是在JDK 5中的新集合类框架中.

而对于类型擦除,例如: List 的类型擦除类型为 List.

以下代码是正确的:

Object o = new Object();
Class oClass = o.getClass();
String s = "str";
Class sClass = s.getClass();
List<Integer> integerList = new ArrayList<>();
Class<? extends List> integerListClass = integerList.getClass();
ArrayList<Integer> integerList_1 = new ArrayList<>();
Class<? extends ArrayList> integerListClass_1 = integerList_1.getClass();

理解了静态类型/动态类型和类型擦除,以下代码就很容易明白了

Object oa = new Object();
Object ob = new Object();
Class oaClass = oa.getClass();
Class obClass = ob.getClass();
System.out.println(oaClass == obClass); //true

List<Integer> integerList = new ArrayList<>();
Class<? extends List> integerListClass = integerList.getClass();
ArrayList<Integer> integerList_1 = new ArrayList<>();
Class<? extends ArrayList> integerListClass_1 = integerList_1.getClass();
List<Integer> integerList_2 = new LinkedList<>();
Class<? extends List> integerListClass_2 = integerList_2.getClass();
List<String> stringList_3 = new ArrayList<>();
Class<? extends List> stringListClass_3 = stringList_3.getClass();

System.out.println(integerListClass == integerListClass_1); //true
System.out.println(integerListClass == integerListClass_2); //false
System.out.println(integerListClass == stringListClass_3); //true

System.out.println(integerListClass); // class java.util.ArrayList
System.out.println(integerListClass_2);// class java.util.LinkedList
System.out.println(stringListClass_3);// class java.util.ArrayList

gitlab ci

Wed, 01 Mar 2017 00:00:00 +0000

gitlab-ci尝试

写在前面

DRY,一切程序能做的事,不要手动重复做. 既然我已经搭建好了gitlab,jenkins,maven-nexus…为何不更进异步呢?

gitlab-ci

Runners

Runners 安装

Install GitLab Runner using the official GitLab repositories

[root@xxx ~]# curl -sSL https://get.docker.com/ | sh
+ sh -c 'sleep 3; yum -y -q install docker-engine'
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
warning: rpmts_HdrFromFdno: Header V4 RSA/SHA1 Signature, key ID 2c52609d: NOKEY
Importing GPG key 0x2C52609D:
 Userid: "Docker Release Tool (releasedocker) <docker@docker.com>"
 From  : https://yum.dockerproject.org/gpg

If you would like to use Docker as a non-root user, you should now consider
adding your user to the "docker" group with something like:

  sudo usermod -aG docker your-user

Remember that you will have to log out and back in for this to take effect!

[root@xxx ~]# curl -L https://packages.gitlab.com/install/repositories/runner/gitlab-ci-multi-runner/script.rpm.sh | sudo bash
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
101  6488    0  6488    0     0   2003      0 --:--:--  0:00:03 --:--:-- 10364
Detected operating system as centos/6.
Checking for curl...
Detected curl...
Downloading repository file: https://packages.gitlab.com/install/repositories/runner/gitlab-ci-multi-runner/config_file.repo?os=centos&dist=6&source=script
done.
Installing pygpgme to verify GPG signatures...
Loaded plugins: security
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
https://packages.gitlab.com/runner/gitlab-ci-multi-runner/el/6/SRPMS/repodata/repomd.xml: [Errno 14] problem making ssl connection
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: runner_gitlab-ci-multi-runner-source. Please verify its path and try again
Installing yum-utils...
Loaded plugins: security
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
https://packages.gitlab.com/runner/gitlab-ci-multi-runner/el/6/SRPMS/repodata/repomd.xml: [Errno 14] problem making ssl connection
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: runner_gitlab-ci-multi-runner-source. Please verify its path and try again
Generating yum cache for runner_gitlab-ci-multi-runner...
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
Importing GPG key 0xE15E78F4:
 Userid: "GitLab B.V. (package repository signing key) <packages@gitlab.com>"
 From  : https://packages.gitlab.com/runner/gitlab-ci-multi-runner/gpgkey

The repository is setup! You can now install packages.
[root@xxx ~]# sudo yum install gitlab-ci-multi-runner
Loaded plugins: security
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
runner_gitlab-ci-multi-runner-source/signature                                                                                                                                               |  836 B     00:00
Retrieving key from https://packages.gitlab.com/runner/gitlab-ci-multi-runner/gpgkey
Importing GPG key 0xE15E78F4:
 Userid: "GitLab B.V. (package repository signing key) <packages@gitlab.com>"
 From  : https://packages.gitlab.com/runner/gitlab-ci-multi-runner/gpgkey
Is this ok [y/N]: y
runner_gitlab-ci-multi-runner-source/signature                                                                                                                                               |  951 B     00:06 ...
runner_gitlab-ci-multi-runner-source/primary                                                                                                                                                 |  175 B     00:00
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package gitlab-ci-multi-runner.x86_64 0:1.11.0-1 will be installed
--> Processing Dependency: git for package: gitlab-ci-multi-runner-1.11.0-1.x86_64
--> Running transaction check
---> Package git.x86_64 0:1.7.1-4.el6_7.1 will be installed
--> Processing Dependency: perl-Git = 1.7.1-4.el6_7.1 for package: git-1.7.1-4.el6_7.1.x86_64
--> Processing Dependency: perl(Git) for package: git-1.7.1-4.el6_7.1.x86_64
--> Running transaction check
---> Package perl-Git.noarch 0:1.7.1-4.el6_7.1 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

====================================================================================================================================================================================================================
 Package                                                Arch                                   Version                                          Repository                                                     Size
====================================================================================================================================================================================================================
Installing:
 gitlab-ci-multi-runner                                 x86_64                                 1.11.0-1                                         runner_gitlab-ci-multi-runner                                  25 M
Installing for dependencies:
 git                                                    x86_64                                 1.7.1-4.el6_7.1                                  base                                                          4.6 M
 perl-Git                                               noarch                                 1.7.1-4.el6_7.1                                  base                                                           28 k

Transaction Summary
====================================================================================================================================================================================================================
Install       3 Package(s)

Total download size: 30 M
Installed size: 80 M
Is this ok [y/N]: y
Downloading Packages:
(1/3): git-1.7.1-4.el6_7.1.x86_64.rpm                                                                                                                                                        | 4.6 MB     00:04
(2/3): gitlab-ci-multi-runner-1.11.0-1.x86_64.rpm                                                                                                                                            |  25 MB     00:02
(3/3): perl-Git-1.7.1-4.el6_7.1.noarch.rpm                                                                                                                                                   |  28 kB     00:00
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total                                                                                                                                                                               3.6 MB/s |  30 MB     00:08
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : git-1.7.1-4.el6_7.1.x86_64                                                                                                                                                                       1/3
  Installing : perl-Git-1.7.1-4.el6_7.1.noarch                                                                                                                                                                  2/3
  Installing : gitlab-ci-multi-runner-1.11.0-1.x86_64                                                                                                                                                           3/3
GitLab Runner: creating gitlab-runner...
  Verifying  : perl-Git-1.7.1-4.el6_7.1.noarch                                                                                                                                                                  1/3
  Verifying  : gitlab-ci-multi-runner-1.11.0-1.x86_64                                                                                                                                                           2/3
  Verifying  : git-1.7.1-4.el6_7.1.x86_64                                                                                                                                                                       3/3

Installed:
  gitlab-ci-multi-runner.x86_64 0:1.11.0-1

Dependency Installed:
  git.x86_64 0:1.7.1-4.el6_7.1                                                                           perl-Git.noarch 0:1.7.1-4.el6_7.1

Complete!

Runners使用

https://docs.gitlab.com/runner/commands/README.html

Register

[root@xxx ~]# gitlab-runner register
Running in system-mode.                            
                                                   
Please enter the gitlab-ci coordinator URL (e.g. https://gitlab.com/):
https://gitlab.com/
Please enter the gitlab-ci token for this runner:
xyzxyz
Please enter the gitlab-ci description for this runner:
[xxx]: simple
Please enter the gitlab-ci tags for this runner (comma separated):
simple,shell
Whether to run untagged builds [true/false]:
[false]: 
Registering runner... succeeded                     runner=yBdLVN_L
Please enter the executor: docker, parallels, shell, ssh, docker+machine, docker-ssh, virtualbox, docker-ssh+machine, kubernetes:
shell	
Runner registered successfully. Feel free to start it, but if it's running already the config should be automatically reloaded! 

参考

RESTful-API-DOCUMENT

Wed, 03 Aug 2016 00:00:00 +0000

RESTful-API 设计与自动文档生成工具

工具

http://www.mikestowe.com/blog/2014/07/raml-vs-swagger-vs-api-blueprint.php http://www.mikestowe.com/2014/12/api-spec-comparison-tool.php http://hanzheng.github.io/tech/2015/01/05/RESTful-API-Design-Tool.html https://yq.aliyun.com/articles/773

nexus repository

Fri, 15 Apr 2016 00:00:00 +0000

<distributionManagement>
    <repository>
        <id>nexus-releases</id>
        <name>Nexus Release Repository</name>
        <url>http://nexushost:28081/nexus/content/repositories/releases/</url>
    </repository>
    <snapshotRepository>
        <id>nexus-snapshots</id>
        <name>Nexus Snapshot Repository</name>
        <url>http://nexushost:28081/nexus/content/repositories/snapshots/</url>
    </snapshotRepository>
</distributionManagement>

(3).mvn deploy

在已经打包好的项目目录下运行mvn deploy发布jar到nexus服务

使用nexus私服

(1).在maven的conf/setting.xml的mirrors下配置nexus私服

<mirrors>
    <mirror>
      <id>nexus-central</id>
      <mirrorOf>*</mirrorOf>
      <url>http://nexushost:28081/nexus/content/repositories/central/</url>
    </mirror>
    <mirror>
      <id>nexus-releases</id>
      <mirrorOf>*</mirrorOf>
      <url>http://nexushost:28081/nexus/content/repositories/releases/</url>
    </mirror>
    <mirror>
      <id>nexus-snapshots</id>
      <mirrorOf>*</mirrorOf>
      <url>http://nexushost:28081/nexus/content/repositories/snapshots/</url>
    </mirror>
</mirrors>

其中central是个代理镜像仓库,默认路由映射到maven中央仓库,当下载中央仓库资源后会存储到该镜像仓库中

Repository ID: central
Repository Name: Central
Repository Type: proxy
Repository Policy: Release
Repository Format: maven2
Contained in groups: 
   Public Repositories
Remote URL: https://repo1.maven.org/maven2/

或者使用一个public mirror url代替

<mirror>
  <id>nexus-central</id>
  <mirrorOf>*</mirrorOf>
  <url>http://nexushost:28081/nexus/content/groups/public/</url>
</mirror>

(1’)或者通过mirrors和profiles配置私服

<mirrors>
    <mirror>
      <id>central</id>
      <mirrorOf>*</mirrorOf>
      <name>Human Readable Name for this Mirror.</name>
      <url>http://localhost:8081/nexus/content/groups/public/</url>
    </mirror>
</mirrors>
<profiles>
    <profile>
      <id>nexus</id>
      <repositories>
        <repository>
          <id>nexus</id>
          <name>Nexus</name>
          <url>http://localhost:8081/nexus/content/groups/public/</url>
            <span></span><releases>
            <enabled>true</enabled>
          </releases>
          <snapshots>
            <enabled>true</enabled>
          </snapshots>
        </repository>
      </repositories>
    </profile>
</profiles>

(1’‘)或者在POM中配置Nexus私服

这样的配置只对当前的Maven项目有效

<repositories>
  <repository>
      <id>nexus</id>
      <name>Nexus Repository</name>
      <url>http://nexushost:28081/nexus/content/groups/public/</url>
      <releases>
          <enabled>true</enabled>
      </releases>
      <snapshots>
          <enabled>true</enabled>
      </snapshots>
  </repository>
</repositories>

(2).在pom下配置依赖即可

参考博客:

http://tianweili.github.io/blog/2015/03/17/linux-nexus-maven-private-server/ http://my.oschina.net/liangbo/blog/195739 http://www.cnblogs.com/quanyongan/archive/2013/04/24/3037589.html

Logstash and ELK

Sat, 26 Mar 2016 00:00:00 +0000

lagstash笔记(1)

download

https://www.elastic.co/downloads/logstash

documents

https://www.elastic.co/guide/en/logstash/current/index.html

first tasted

bin/logstash -e 'input { stdin { } } output { stdout {} }'

Settings: Default pipeline workers: 4
Logstash startup completed
I'm two8g
2016-03-26T02:52:03.667Z two8gPC I'm two8g
Hello logstash
2016-03-26T02:52:21.417Z two8gPC Hello logstash

Logstash adds timestamp and IP address information to the message. Exit Logstash by issuing a CTRL-D

Setting Up an Advanced Logstash Pipeline

Logstash 管道流包含一个或多个input,filter,output插件集合 Logstash 配置文件定义管道流。当启动一个Logstash实例时，使用 -f <path/to/file> 指定配置文件来设置管道流。

一个Logstash管道流有两个必选响input，output，一个可选项filter. input plugins: consume data from a source filter plugins: modify the data as you specify the output: plugins write the data to a destination

Parsing Apache Logs into Elasticsearch

Configuring Logstash for File Input

first-pipeline.conf

input {
     file {
         path => "/path/to/logstash-tutorial.log"
         start_position => beginning ①
         ignore_older => 0 ②
     }
 }

① 设置数据读取的起始位置，默认监控新数据行，like tail -f.

② 默认忽略最后修改时间超过86400s，或许我们不想忽略如何文件

Parsing Web Logs with the Grok Filter Plugin

grok 是 Logstash 默认支持的filter插件之一。相关插件文档： https://www.elastic.co/guide/en/logstash/current/working-with-plugins.html

grok 查找日志中的 patterns , 需要你配置你想要搜集的 patterns。

日志

83.149.9.216 - - [04/Jan/2015:05:13:42 +0000] "GET /presentations/logstash-monitorama-2013/images/kibana-search.png
 HTTP/1.1" 200 203023 "http://semicomplete.com/presentations/logstash-monitorama-2013/" "Mozilla/5.0 (Macintosh; Intel
 Mac OS X 10_9_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.77 Safari/537.36"

Information	Field Name
IP Address	clientip
User ID	ident
User Authentication	auth
timestamp	timestamp
HTTP Verb	verb
Request body	request
HTTP Version	httpversion
HTTP Status Code	response
Bytes served	bytes
Referrer URL	referrer
User agent	agent

配置filter

filter {
     grok {
         match => { "message" => "%{COMBINEDAPACHELOG}"}
     }
 }

过滤后结果

{
 "clientip" : "83.149.9.216",
 "ident" : ,
 "auth" : ,
 "timestamp" : "04/Jan/2015:05:13:42 +0000",
 "verb" : "GET",
 "request" : "/presentations/logstash-monitorama-2013/images/kibana-search.png",
 "httpversion" : "HTTP/1.1",
 "response" : "200",
 "bytes" : "203023",
 "referrer" : "http://semicomplete.com/presentations/logstash-monitorama-2013/",
 "agent" : "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.77 Safari/537.36"
 }

Indexing Parsed Data into Elasticsearch

java version

Tue, 22 Mar 2016 14:45:25 +0000

JAVA 版本介绍

Java SE
Java EE
Java ME
Java EA

Java SE

Java平台标准版本，又称J2SE。

Java Platform, Standard Edition (Java SE) lets you develop and deploy Java applications on desktops and servers, as well as in today's demanding embedded environments. Java offers the rich user interface, performance, versatility, portability, and security that today's applicationsrequire.

Java EE

Java平台企业版本，又称J2EE。

Java Platform, Enterprise Edition (Java EE) is the standard in community-driven enterprise software. Java EE is developed using the Java Community Process, with contributions from industry experts, commercial and open source organizations, Java User Groups, and countless individuals. Each release integrates new features that align with industry needs, improves application portability, and increases developer productivity.

Java ME

Java平台微小版本，又称J2ME。

Java Platform, Micro Edition (Java ME) provides a robust, flexible environment for applications running on embedded and mobile devices in the Internet of Things: micro-controllers, sensors, gateways, mobile phones, personal digital assistants (PDAs), TV set-top boxes, printers and more. Java ME includes flexible user interfaces, robust security, built-in network protocols, and support for networked and offline applications that can be downloaded dynamically. Applications based on Java ME are portable across many devices, yet leverage each device's native capabilities. 

JAVA EA

java 平台预览版本。EA 代表“提前获取”(Early Access)，也就是说，EA 是软件即将发布的版本的预览版本。

two8g

Vim Cheat Sheet

Vim

Content

Global

Cursor movement

Insert mode

Editing

Marking text (visual mode)

Visual commands

Pwa Aia

Native or Web?

回顾

细说

Progressive Web Apps

讨论

Github Pages

Github Pages

个人/组织站点

项目站点

MQ And Domain Event

消息队列与领域事件

消息队列

两种模式

（非）持久订阅

领域事件

Object

Object的getClass方法

gitlab ci

gitlab-ci尝试

写在前面

gitlab-ci

Runners

Runners 安装

Runners使用

Register

参考

RESTful-API-DOCUMENT

RESTful-API 设计与自动文档生成工具

工具

nexus repository

目录

网页上传jar包

maven发布jar

使用nexus私服

Logstash and ELK

lagstash笔记(1)

download

documents

first tasted

Setting Up an Advanced Logstash Pipeline

Parsing Apache Logs into Elasticsearch

Configuring Logstash for File Input

Parsing Web Logs with the Grok Filter Plugin

Indexing Parsed Data into Elasticsearch

java version

JAVA 版本介绍

Java SE

Java EE

Java ME

JAVA EA