Installation and usage skills of idea

IDEA Installation and use skills of

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Installation and use

idea Official website ：https://www.jetbrains.com/idea

Download... On the official website , I use 2019.3 This version .

Related documents , In my personal blog （ Excellent face ） see .

Blog address ：http://goodysr.cn

First , We download the corresponding version on the official website IDEA, Double-click on the run , Click on Nest, Installation .

Select the directory to install , Be careful not to have Chinese , Existence of Chinese characters .

next step , Make the basic configuration .

Then install , Wait patiently .

Download complete , Click on finish. After that, we will have IDEA The icon , The installation is complete . We double-click to start IDEA Software , Conduct permanent use operation . Open software , choice Do not import settings.

If you come up, you need to register , Choose trial （Evaluate for free） Get into IDEA, And then click Evaluate, Get into .

Click on what you want to register IDEA menu ："Configure" or "Help" -> "Edit Custom VM Options ..."
Add at the end of the open window ：jetbrains-agent.jar Path location of the package , This package can be obtained from my official account. . Choose according to different operating systems , I'm aiming at windows system operation .

Then restart your IDEA, Click on IDE menu “Help” -> “Register…” or “Configure” -> “Manage License…”. choice Activation code,

hold Code Copy the code on it , It can be used for a long time .

After the above operations are successful , open IDEA The appearance of ：

IDEA Directory structure description ：

After successful installation , stay IDEA Installation directory , find bin In the catalog idea64.exe.vmoptions file . This is 64 Bit IDEA Configuration information ,

Open this file , If you develop large projects , modify IDEA Default configuration .

If your computer is memory 16G, You can modify these values , Improve development efficiency . If it is 8G, Modification is not recommended .

First set the initial number of memory （ promote IDED The opening speed of ） Modifiable 500m

The second largest number of contents （ Reduce the frequency of garbage collection ） Modifiable 1500m

Size of the third reserved cache code Modifiable 500m

IDEA Common settings for :

Set the theme , The skin

menu bar - find - File - Setting Find the following position here , Modify the desired theme . If you choose more topics , You can go to IDEA Download... On the official website , Import corresponding jar, You can use .

Set the mouse hover prompt

When we look at the code , Hover the mouse over a class , Display the prompt information and description of this class .

Settings cancelled Tabs Single line labels

When too many files are opened ,Tab The label also displays an ellipsis … , Cancel this , Multiple lines of file labels are displayed .

Set file size

stay Font Set in the , File size and line spacing .

Set the document comment information of the class header

Creating a class , The document information of this class will be displayed .

Set the project file encoding

Set the point saving mode

This setting is generally not required , Will affect development efficiency . The code check is turned off , Tips .

### Plug in settings

Debug Set up

Shared memory yes Windows A unique property , Generally in Windows This setting is recommended under the system , Memory footprint is relatively small .

Maven Set up

Configure the relevant address

stay Importing Next Import Maven projects automatically To check , When pom File change auto import package .

### Cache and index cleanup stay File Next , find Invalidate ..., After entering Invalidate After button , Just recompile the index , Clean cache .

however , We have connections GIT, The history of our submission will also be cleared , Path in

C:\Users\ My own computer .IntelliJIdea2019.3\system\LocalHistory

If you don't want to be cleared , This directory needs to be backed up , Then after cleaning up , Just put it back .

Cancel IDEA Automatic update of

IDEA Shortcut key settings :

Shortcut key settings , You can select a shortcut key for a software .

IDEA Common shortcut keys ：

Universal solution / Production return variable Alt + enter

Code prompt completion Alt + /

Return to the previous edit page Alt + Left

Return to the next edit page Alt + Right

The left window shows the structure of the current file Alt + 7

Find all references to your functions or variables or classes Alt + F7

View method parameters Ctrl+P

view classes 、 Method 、 Attribute note Ctrl+Q

Find the class Ctrl + N

Replace text with current window Ctrl + R

Select the code Ctrl + W

Delete row Ctrl + X

Copy line Ctrl + D

Display class structure chart Ctrl + H

Rewriting methods Ctrl + O

Implementation method Ctrl + I

Recently changed code Ctrl + E

Declaration of the current method Ctrl + Q

try Shortcut key Ctrl + Alt + T

formatting code Ctrl + Alt + L

toggle case Ctrl + Shift + U

Full text search Ctrl + Shift + F

Warning quick fix Shift + F2

View breakpoints Ctrl + Shift + F8

Stepping into F7

Smart walk in Shift + F7

Forced entry Alt + Shift + F7

Step over F8

Step out Shift + F8

Force to step over Alt + Shift + F8

Run to cursor Alt + F9

Force to cursor Ctrl + Alt + F9

Recovery procedure F9

Go to breakpoint Alt + F10

IDEA To configure tomcat:

Click on Run—EDit Configurations…

Click on the left side of the “+” Number , find Tomcat Server—Local

stay Tomcat Server -> Unnamed -> Server -> Application server Under the project , Click on Configuration , Find the local Tomcat The server , Click again OK Button .

Configuration complete , Just add the project to start .

If it is SpringBoot project , The development environment is started through built-in services , become involved war package , Need to get rid of it. springboot Built in tomcat package .

step 1：pom.xml file Import package ;

<!-- hit war package + -->
<dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-tomcat</artifactId>
   <scope>provided</scope>
</dependency>

step 2：pom.xml Change to war;

<packaging>war</packaging>

step 3： Start class Inherit SpringBootServletInitializer class , rewrite configure Method ;

@SpringBootApplication
public class WechatApplication extends SpringBootServletInitializer {

   public static void main(String[] args) {
      SpringApplication.run(WechatApplication.class, args);
   }

   @Override
   protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
      return builder.sources(WechatApplication.class);
   }
   
}

IDEA Configuration database :

In the main interface , Click on... In the right sidebar Database , Click on + Corresponding database

fill Database Database name , In the input User and Password , Click on Test Connection

The initial connection will download some packages , Wait a while and you can connect to the database .

IDEA Generate Javadoc:

Tools Next Generated JavaDoc , Click to enter ;

Then fill in the exported path and coding information , Click on OK, You can generate doc.