Eclipse User Guide - Java知识

One 、MyEclipse Use guide

1.web Recommended Package Explorer open , Do not use Project Explorer;
Open mode ：Windows--Show View--Other Mid search Package Explorer--open, The default is shown below , Drag it to the upper left corner
2.Eclipse By default, the built-in browser is used to access Servlet, But this internal browser has bug, It's best to use local resources to test ！
Eclipse Modify the default browser ：Window--Web browser--Chrome Google runs by default Servlet
3. add to Servlet Templates
Windows--Perferences--Java--Editor--Templates--New--Pattern Add the template you want to use frequently
4.Eclipse Shortcut key
(1) Auto fill code ,Alt+Shift+L
(2) Set up word prompts ：Windows--Perferences--Java--Editor--Content Assist
--Auto activation trigger for java Add in a-z and A-Z
5. How to import / export --java/web Program to Eclipse
(1) export ：-- Want to send the document to someone else , Copy and paste directly to the desktop to export
(2) Import ：-- Create a new project of the same type , Add... After the name -teacher( It can be different from your own )
Then copy from the directory src and WebContent Just go to the project
Import Import ：Import-General-Existing Projects into Workspace--select root directory
Choose Copy projects into workspace Options ( It will automatically save a copy in the workspace )
6. Too many projects , It's not convenient to find , I want to close the unused project temporarily ：
Right click on the item ,Close Project, Switch to Package Explorer After the view , There's a little arrow down , Click and choose Filters
Check on Close projects You can hide the closed items
7. Click on a , Hold down shift, Click on the last one , You can select everything in the list
8. To write mybatis-config.xml There is no prompt solution ： Refer to the second stage handout 04.md, There are detailed steps
Window-Preferences- Search on the left catalog,, Choose the first one on the right User Specified Entries, Click on Add
Click the first one on the left Catalog Enty, Click on File System, Look for mybatis-3-config.dtd, Click on the open , The path will be displayed above ,
Key Type choice URI,key: hold http:--mybatis.org/dtd/mybatis-3-config.dtd Copy it in this , Click on ok
User Specified Entries The content you just specified will appear in it
9.Alt+Shift+L: Complete the code on the left

Two 、Maven

1. How to integrate maven Configuration to Eclipse in
window Right click --> Preferences --> Click on Maven Options , Check... In the options on the right "Download Artifact Sources"
Click on add --> Install your own Maven added --> Add your own installed Maven( Appoint Maven Installation position )
--> Default maven Switch to your own configuration maven： --> Set up maven Of settings The location of the file ：( choice setting.xml The location of )
Local Repository(From merged user and global setting) The path will change
--> Test whether the configuration is successful ：Winshow-show view-other-->maven( Double-click to open , It's a window )
Find out pom.xml The document will report an error , Solution ： Right click the project name JavaEE Tools--> Generate...
2. adopt Maven Create a Java project
File/new/ Maven Project--> choice --new simple project
Group Id : Company domain name (com.tedu)
Artifact Id : Project name (CGB-MAVEN-JAVA01)
Version : The default is OK Version of the project , The default created project is 0.0.1-SNAPSHOT snapshot , It's also called the informal version , The official version is RELEASE
Packging： choice jar Namely java engineering ,war yes web engineering ,pom: Indicates that the parent project is created ( Of course, there are sub projects ) Or polymerization Engineering

3、 ... and 、Navicat Use of software

1. make new connection ： You can use any connection name , Host name /IP Address , port , The user name is the default , Just type in the password ok
2. When you create a new database , The left column does not show the new database , Right click the connection to refresh
3. When the database inserts data value and values The difference between ：
value Only one piece of data can be inserted ,values Multiple data can be inserted , Separated by commas , The code is as follows ：
insert into emp values(null,' Yu Ying ',' The programmer ',10000),(null,' Li Chuang ',' The programmer ',10000)