[Java] [Maven3] Summary of how to use Maven3

Apache Maven Study notes.

About this article

This is a memo that summarizes materials related to Java beginners. The version will be Maven3.

official

Maven – Welcome to Apache Maven

How to read

Apache Maven (Apache Maven / Maven) (At first I thought it was a Marvel-like Marvel of American comics)

Add user settings

Maven – Settings Reference

settings.xml location

Windows Add settings.xml under C: \ Users \ user \ .m2.

Proxy settings

In case of proxy environment Add the following settings to settings.xml.

Proxy setting example

<?xml version="1.0" encoding="UTF-8"?>
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
    <proxies>
        <proxy>
            <id>proxy-http</id>
            <active>true</active>
            <protocol>http</protocol>
            <host>proxy.exsample.com</host>
            <port>8080</port>
            <!--<username></username>-->
            <!--<password></password>-->
        </proxy>
        <proxy>
            <id>proxy-https</id>
            <active>true</active>
            <protocol>https</protocol>
            <host>proxy.exsample.com</host>
            <port>8080</port>
            <!--<username></username>-->
            <!--<password></password>-->
        </proxy>
    </proxies>
</settings>

[java --About maven proxy authentication error in internal environment --Stack overflow](https://ja.stackoverflow.com/questions/22073/%E7%A4%BE%E5%86%85%E7%92%B0 % E5% A2% 83% E3% 81% AB% E3% 81% 8A% E3% 81% 91% E3% 82% 8Bmaven% E3% 81% AE% E3% 83% 97% E3% 83% AD% E3 % 82% AD% E3% 82% B7% E8% AA% 8D% E8% A8% BC% E3% 82% A8% E3% 83% A9% E3% 83% BC% E3% 81% AB% E3% 81 % A4% E3% 81% 84% E3% 81% A6)

Add application server settings

Application server configuration example such as Tomcat

Deployment destination server setting addition example

    <servers>
        <server>
            <id>localhost</id>
            <username>user</username>
            <password>pass</password>
        </server>
    </servers>

[Windows] [IntelliJ] [Java] [Tomcat] Create an environment for Tomcat9 with IntelliJ --Qiita

Generate environment from archetype

Generate a simple configuration (Java Main Class + JUnit configuration)

Basically, I think you should use maven-archetype-quickstart in ʻorg.apache.maven.archetypes`. An archtype that includes the main function and JUnit settings.

However, JUnit is as old as 3.8.1, so it may be better to upgrade to 4.x or 5.x.

Maven Repository: junit » junit

Run on the command line

Maven execution example

$ mvn archetype:generate \
  -DarchetypeGroupId=org.apache.maven.archetypes \
  -DarchetypeArtifactId=maven-archetype-quickstart \
  -DinteractiveMode=false \
  -DgroupId=${groupId} \
  -DartifactId=${artifactId}

Others / plug-ins

Explicitly specify the compiled version of Java

Use maven-compiler-plugin.

pom.xml

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.6.1</version>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
          <encoding>UTF-8</encoding>
        </configuration>
      </plugin>
    </plugins>
  </build>

Apache Maven Compiler Plugin – Introduction Maven Repository: org.apache.maven.plugins » maven-compiler-plugin

How to change Java version for Maven in IntelliJ? - Stack Overflow What to do if Java Compiler is version 1.5 on heroku push and compile error occurs when using lambda expression --Qiita

Run the program from maven

How to run Java program from Maven --Qiita

Add ʻexec: java` to the command line

Combine jar files including libraries into one

If you want to combine externally dependent jars into one jar file, you should use Maven Assembly Plugin.

Collect externally dependent jars with Maven Assembly Plugin --A Memorandum

When using Maven that comes with the IDE

IntelliJ IDEA Windows Maven execution binary exists around the following, so put it in the PATH here.

C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2017.1.2\plugins\maven\lib\maven3\bin

For multi-configuration projects

Run-time options for multi-module configuration projects · Getting started with Maven3

reference

Maven – Welcome to Apache Maven Maven3 Tutorial