Maven编译Java项目

Spring在线参考文档： http://spring.io/guides/gs/maven/

下载安装

• Downloadand unzip the source repository for this guide, or clone it using Git: git clone https://github.com/spring-guides/gs-maven.git

• cd into gs-maven/initial

• Jump ahead to [initial].

Once you have downloaded the zip file, unzip it to your computer. Then add the bin folder to your path.

检查mvn是否安装成功： mvn -v

Apache Maven 3.3. (bb52d8502b132ec0a5a3f4c09453c07478323dc5; --10T16::+:)
Maven home: /home/dsyer/Programs/apache-maven
Java version: 1.8.0_152, vendor: Azul Systems, Inc.
Java home: /home/dsyer/.sdkman/candidates/java/8u152-zulu/jre
Default locale: en_GB, platform encoding: UTF-
OS name: "linux", version: "4.15.0-36-generic", arch: "amd64", family: "unix"

配置项目文件

mkdir -p src/main/java/hello

src/main/java/hello/HelloWorld.java

package hello;

public class HelloWorld {
    public static void main(String[] args) {
        Greeter greeter = new Greeter();
        System.out.println(greeter.sayHello());
    }
}

src/main/java/hello/Greeter.java

package hello;

public class Greeter {
    public String sayHello() {
        return "Hello world!";
    }
}

pom.xml 与src目录平级

• <modelVersion>. POM model version (always 4.0.0).

• <groupId>. Group or organization that the project belongs to. Often expressed as an inverted domain name.

• <artifactId>. Name to be given to the project’s library artifact (for example, the name of its JAR or WAR file).

• <version>. Version of the project that is being built.

• <packaging> - How the project should be packaged. Defaults to "jar" for JAR file packaging. Use "war" for WAR file packaging.

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.springframework</groupId>
    <artifactId>gs-maven</artifactId>
    <packaging>jar</packaging>
    <version>0.1.0</version>

    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>2.1</version>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <transformers>
                                <transformer
                                    implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                    <mainClass>hello.HelloWorld</mainClass>
                                </transformer>
                            </transformers>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

# This will run Maven, telling it to execute the compile goal

mvn compile

# The package goal will compile your Java code, run any tests, and finish by packaging the code up in a JAR file within the target directory

mvn package

# The install goal will compile, test, and package your project’s code and then copy it into the local dependency repository, ready for another project to reference it as a dependency

mvn install

# run tests unit

mvn test

dependencies 声明依赖关系

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.springframework</groupId>
    <artifactId>gs-maven</artifactId>
    <packaging>jar</packaging>
    <version>0.1.0</version>

    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <dependencies>
        <!-- tag::joda[] -->
        <dependency>
            <groupId>joda-time</groupId>
            <artifactId>joda-time</artifactId>
            <version>2.9.2</version>
        </dependency>
        <!-- end::joda[] -->
        <!-- tag::junit[] -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
        <!-- end::junit[] -->
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>2.1</version>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <transformers>
                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                    <mainClass>hello.HelloWorld</mainClass>
                                </transformer>
                            </transformers>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>