maven打可执行jar包的几种build写法

1、指定Main方法，依赖jar放进另一个文件夹中，并将该文件夹设为classpath

<build>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>2.3.2</version>
                <configuration>
                    <archive>
                        <manifest>
                            <!--change addClasspath to true if daks is desktop version-->
                            <addClasspath>true</addClasspath>
                            <classpathPrefix>lib/</classpathPrefix>
                            <mainClass>com.liuyx.Main</mainClass>
                            <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
                            <addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
                        </manifest>
                        <manifestEntries>
                            <Class-Path>.</Class-Path>
                            <!--<Permissions>${Permissions}</Permissions>
                            <Caller-Allowable-Codebase>${Caller-Allowable-Codebase}</Caller-Allowable-Codebase>-->
                        </manifestEntries>
                    </archive>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <version>2.3</version>
                <executions>
                    <execution>
                        <id>copy-dependencies</id>
                        <phase>package</phase>
                        <configuration>
                            <overWriteReleases>false</overWriteReleases>
                            <overWriteSnapshots>false</overWriteSnapshots>
                            <overWriteIfNewer>true</overWriteIfNewer>
                            <outputDirectory>
                                ${project.build.directory}/lib
                            </outputDirectory>
                        </configuration>
                        <goals>
                            <goal>copy-dependencies</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

命令：

mvn package

结果会将所有依赖jar包放进lib目录下。

MANIFEST.MF内容(示例)：

Manifest-Version: 1.0
Archiver-Version: Plexus Archiver
Created-By: Apache Maven
Built-By: Voldemort
Build-Jdk: 1.8.0_144
Specification-Title: refreshIp
Specification-Version: 1.0-SNAPSHOT
Implementation-Title: refreshIp
Implementation-Version: 1.0-SNAPSHOT
Implementation-Vendor-Id: com.liuyx
Main-Class: com.liuyx.Main
Class-Path: . lib/httpclient-4.5.2.jar lib/httpcore-4.4.4.jar lib/comm
 ons-logging-1.2.jar lib/commons-codec-1.9.jar lib/fastjson-1.2.29.jar

2、将所有内容放到一个jar包里

<build>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>3.0.0</version>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>com.liuyx.Main</mainClass>
                        </manifest>
                    </archive>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id> <!-- this is used for inheritance merges -->
                        <phase>package</phase> <!-- bind to the packaging phase -->
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <!--(end) for package jar with dependencies -->
        </plugins>
    </build>

命令：

mvn package

结果会将所有依赖jar包打进：xxx-jar-with-dependencies.jar