Shulou(Shulou.com)06/03 Report--

This article mainly introduces "how to understand and use Maven". In daily operation, I believe many people have doubts about how to understand and use Maven. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about "how to understand and use Maven"! Next, please follow the editor to study!

First of all, what can Maven do? it probably has the following functions:

1. Good management of package dependencies in the project.

2, can also achieve the hot deployment of the project (can publish the project directly to the remote server).

3. Realize the packaging and deployment of the project.

4. You can also run all the test cases.

5. Realize the multi-module construction of the project.

In this article, I will take you to set up a project to systematically summarize the knowledge and practical ideas of Maven. I hope it will be helpful to you. The content is divided into the following parts:

The use of Maven

Use the command to create a java project

Analysis of engineering catalogue

Packing

Build a web project

The usage of Maven on MyEclipse/eclipse

Create a JAVA project for Maven on Eclipse

Create a Web project for Maven in Eclipse

The use of IDEA

The skills of using IDEA

01 use of Maven

1. Download the MAVEN package

Extract to the specified directory G:/maven 's directory

2. To use the command, you must first configure the environment variable.

M2_HOME=G:\ maven\ apache-maven-3.6.0 makes a reference to% M2roomHOME%\ bin in path

3. Testing

On the command line, enter mvn-version Apache Maven 3.5.0 (ff8f5e7444045639af65f6095c62210b5713f426; 2017-04-04T03:39:06+08:00) Maven home: G:\ maven\ apache-maven-3.5.0\ bin\.. Java version: 1.8.0mm 101, vendor: Oracle Corporation Java home: C:\ Program Files (x86)\ Java\ jdk1.8.0_101\ jre Default locale: zh_CN, platform encoding: GBK OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"

4. It indicates that the configuration is successful.

02 use commands to create a java project

1. First create a directory where the project is stored

C:\ Users\ apple\ Desktop\ maven-project

2. Use the command to enter this directory

Cd / DC:\ Users\ apple\ Desktop\ maven-project

3. Use the following command

Mvn archetype:generate-> get the template of the created maven project. At this time, more than 2300 templates for the construction project will appear. Template No. 1311 selected by default (template for creating JAVA project) directly enter version number of selected template-> default groupId: group id this is generally consistent with the main package artifactId: select the project name of this general write project. Choose version number:-> generally default is easy to write package name-> default is consistent with groupId default to confirm: y

4. If you look at this directory at this time, you will have one more project folder.

03 analysis of project catalogue

The directory is resolved as follows:

-src / / mainly contains JAVA resource test files-- main / / JAVA files and running configuration files- -- java / / this is the configuration file for JAVA-- test / / contains the test files and resources needed for testing-- -java / / tested JAVA code-POM / / the project's own coordinate constants, the project's dependency package project dependent components

Project coordinates:

Dependency of the com.qy.shopping MAVEN_01 1.0-SNAPSHOT jar MAVEN_01 http://www.example.com library: the name of the group's id junit project the version number of the junit project 4.11 when this library is currently valid test library: local library remote library

04 packing

1. First use the command to enter the root directory of the project

C:\ Users\ apple\ Desktop\ maven-project\ MAVEN_01\ mvn package-- > generate the target file

2. Enter the target file

The Java-jar MAVEN_01-1.0-SNAPSHOT.jar main class runs through the full path.

05 steps of building a web project

1. Enter the directory where the project is stored

Cd / DC:\ Users\ apple\ Desktop\ maven-project

2. Get all the templates

Mvn archetype:generate

3. Select template 1316

Enter 1316-> the following is the same as before

4. Analysis of engineering catalogue

-src-main- -java stores java files-webapp stores external shared resources- -pom

Note:

Each different type of project corresponds to a different template in maven.

Java project has the template of java project.

Web project has the template of web project.

Suite project has a template for suite project (used as a father project)

The usage of 06 Maven in MyEclipse/eclipse

1. Download the plug-in package of MAVEN on Eclipse

2. Enter window----perfrence---- and enter maven

3. Installations----add add the root path of the local maven

4. Set the location of the local warehouse and the location of the setting file

Note: the location of the setting.xml file is in the root path of the local warehouse, and there is a setting.xml configuration file. In fact, this configuration file is not here in the conf directory under maven's pressurized road strength, so copy this file to the root path of the library. Note: the location of the library is in the .m2 file under the user directory of disk c by default. This path can be changed.

07 create the JAVA project of maven on Eclipse

1. Right-> New

Maven Project-> Create a simple project---- > enter project coordinates (id of the group, project name, packaging method (jar), dependent version)-> complete

2. Catalog resolution of the project

Rc/main/java: where the JAVA code is written src/main/resource: this is where the configuration files are stored src/test/java: where the test files are stored src/test/resoucre: where the test files store resources target: this is the place where the packaged files and resources are stored Pom: (project coordinates, dependent packages, dependent components, various configurations)

3. Write the project and test it

08 create the Web project of maven on Eclipse

1. Right-> New

Maven Project-> next- > maven archetype webapp (template)-> next (enter project coordinates)-> finish (complete)

2. Directory parsing

-- java Resource-src/main/resource: where the resource file is written -src/man/java: where the JAVA code is written-- src/main-- -webapp: this directory is equivalent to the previous Web-content/Web app directory

3. Import the common packages needed by the web project

Javax.servlet javax.servlet-api 3.1.0 provided javax.servlet.jsp.jstl javax.servlet.jsp.jstl-api 1.2.1 javax.servlet jsp-api 2.0 provided org.apache.taglibs taglibs-standard-impl 1.2.5 junit junit 4.12 test

4. Create our jsp file

Insert title here this is index jsp page

5. Test (right-click-> run on server)

Note:

The project created by default has no place to write JAVA code, so you need to create it manually

Right-click on the src/main below-> new folder---- > name java and it will run automatically.

The use of 09 IDEA

1. Description of the home menu

Create new project: create a new project Import project: import a project (IDEA's project) Open: open a project Check out from version control: indicates that a project is checked out from the repository of the version control tool

2. Create a java project

Create new project-Select maven-, select create from archetype-next-, fill in the project coordinates

Skills of using 10 IDEA

1. Set the shortcut key to the shortcut key of Eclipse

File-setting-keymap- > Select Eclipse

2. Setting of encoding

File-setting- enter encoding File encoding-> Select global code and project code

3. Font setting

File-setting- enter font- to find the right side of font- and you can set the font size

4. Customization of shortcut keys

File-setting-Editor----live templates- > +-> add Group (bobo1)-> complete +-> live template-> enter the abbreviation of the prompt in the input box-> enter the content to be expressed in template text and select create. Good template-> right Change Context- > Select java (indicates prompt in java code)-OK

5. Change the theme

On the right side of File- setting-Appearance-, there is a choice of theme (choose a theme that suits you)

6. How to install maven for IDEA

Enter maven- > right side of File-setting- to configure

7. Installation of Tomcat

Run-Edit configrations- upper left corner +-> find Tomcat server- > Local- > Application server (later browsing)-> Configration- > find the root directory of Tomcat-> this is done, the study on "how to understand and use Maven" is over, hoping to solve everyone's doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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