我已经在这个问题上挣扎了几天了,希望能得到一些指导。
我正在使用Spring Boot,并试图将我的项目构建到一个我可以运行的jar中。有一些嵌套依赖项(OpenCV)需要我将它们全部包含到一个Jar文件中。
在我添加这些依赖项之前,我能够成功地构建一个工作正常的Jar文件;直到我开始尝试构建一个组合的jar文件,事情才开始成为一个问题。
我面临的问题是:如何成功地构建一个Jar文件,将所有的Spring文件、嵌套依赖项和源代码都包含到一个fat Jar文件中?
下面是我的POM文件,其中省略了一些依赖项。
<?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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.myapp</groupId>
<artifactId>mytestproject</artifactId>
<packaging>jar</packaging>
<!--Change the above to a war instead of jar if you need a war file-->
<name>Spring OSGi Bundle</name>
<version>0.1</version>
<url>http://www.springframework.org/osgi</url>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.1.RELEASE</version>
</parent>
<properties>
<spring.osgi.version>1.2.1</spring.osgi.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<java.version>1.8</java.version>
</properties>
<!-- ================================================ -->
<!-- Repository Configuration -->
<!-- ================================================ -->
<!-- Repos -->
<repositories>
<!-- Apache imaging https://commons.apache.org/proper/commons-imaging/index.html -->
<repository>
<id>apache.snapshots</id>
<name>Apache Development Snapshot Repository</name>
<url>https://repository.apache.org/content/repositories/snapshots/</url>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
<repository>
<id>jitpack.io</id>
<url>https://jitpack.io</url>
</repository>
<repository>
<id>i21-s3-osgi-repo</id>
<name>i21 osgi artifacts repo</name>
<snapshots>
<enabled>true</enabled>
</snapshots>
<url>http://maven.springframework.org/osgi</url>
</repository>
<repository>
<id>com.springsource.repository.bundles.external</id>
<name>SpringSource Enterprise Bundle Repository - External Bundle Releases</name>
<url>http://repository.springsource.com/maven/bundles/external</url>
</repository>
<repository>
<id>com.springsource.repository.bundles.release</id>
<name>SpringSource Enterprise Bundle Repository - SpringSource Bundle Releases</name>
<url>http://repository.springsource.com/maven/bundles/release</url>
</repository>
<repository>
<id>com.springsource.repository.bundles.milestone</id>
<name>SpringSource Enterprise Bundle Repository - SpringSource Milestone Releases</name>
<url>http://repository.springsource.com/maven/bundles/milestone</url>
</repository>
<repository>
<id>spring-release</id>
<name>Spring Portfolio Release Repository</name>
<url>http://maven.springframework.org/release</url>
</repository>
<repository>
<id>eclipse-repository</id>
<name>Eclipse Repository</name>
<url>http://repo1.maven.org/eclipse/</url>
</repository>
<repository>
<id>spring-ext</id>
<name>Spring External Dependencies Repository</name>
<url>
https://springframework.svn.sourceforge.net/svnroot/springframework/repos/repo-ext/
</url>
</repository>
</repositories>
<!-- Plugin Repos -->
<pluginRepositories>
<pluginRepository>
<id>maven-repo</id>
<name>maven repo</name>
<url>http://repo1.maven.org/maven2/</url>
</pluginRepository>
<pluginRepository>
<id>com.springsource.repository.bundles.milestone</id>
<name>SpringSource Enterprise Bundle Repository - SpringSource Milestone Releases</name>
<url>http://repository.springsource.com/maven/bundles/milestone</url>
</pluginRepository>
</pluginRepositories>
<!-- Dependencies -->
<dependencies>
<!-- Local Jar File for open.cv -->
<dependency>
<groupId>org.openpnp</groupId>
<artifactId>opencv</artifactId>
<scope>system</scope>
<version>3.2.0</version>
<systemPath>${basedir}/src/main/libs/opencv-320.jar</systemPath>
</dependency>
<!-- OSGI -->
<dependency>
<groupId>org.springframework.osgi</groupId>
<artifactId>spring-osgi-test</artifactId>
<version>${spring.osgi.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.osgi</groupId>
<artifactId>spring-osgi-annotation</artifactId>
<version>${spring.osgi.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<!-- Build Tag -->
<build>
<sourceDirectory>${basedir}/src/main/java</sourceDirectory>
<resources>
<!-- standard Maven folder -->
<resource>
<directory>src/main/resources</directory>
</resource>
<!-- plus root folder -->
<resource>
<directory>.</directory>
<includes>
<include>plugin.xml</include>
<include>META-INF/*</include>
</includes>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<!--<classifier>sources</classifier>-->
<!--<classifier>spring-boot</classifier>-->
<mainClass>com.myapp.internal.MainLauncher</mainClass>
<addResources>true</addResources>
<!--<executable>true</executable>-->
</configuration>
<executions>
<execution>
<id>attach-sources</id>
<!--<phase>compile</phase>-->
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<archive>
<manifest>
<!--<classpath>.</classpath>-->
<addClasspath>true</addClasspath>
<mainClass>com.myapp.internal.MainLauncher</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
<executions>
<!--<execution>-->
<!--<id>attach-sources</id>-->
<!--<phase>compile</phase>-->
<!--<goals>-->
<!--<goal>single</goal>-->
<!--</goals>-->
<!--</execution>-->
<execution>
<id>assemble-all</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
在Intellij IDE的终端上,我尝试使用3个不同的命令进行编译:
1) mvn清洁封装
2) mvn全新安装
3) mvn清洁编译程序集:single
这3个命令与更改build标记内的注释代码相结合,总是会产生以下两个结果之一:
要么我得到一个大的jar文件,其中除了我的源代码不在基目录中(它位于BOOT-INF目录下,并且在运行时找不到它),而且每当我使用java -jar {MyJar}.jar运行它时,我都会得到标准的“找不到MainLauncher”错误。
或
我得到了两个jar文件,其中“带依赖项的jar”版本包含我的源代码和其他库,但其中没有Spring库。
因此,这两个jars都不能工作,因为我需要它们的一些组合。
到目前为止我已经尝试过的东西:
1) Packaging spring sub-projects into one jar
2) No source jar attached with maven-assembly-plugin
3) Include spring xml in jar by maven-assembly-plugin packaging
4) How do I create an an executable jar in Spring Boot?
5) https://www.mkyong.com/maven/create-a-fat-jar-file-maven-assembly-plugin/
为了用我的源代码、spring文件和嵌套依赖项实现一个jar文件的目标,我错过了什么?
发布于 2018-05-28 13:18:46
好吧,花了相当多的研究,但简短的答案是,你不能做我希望你能用某些外部库做的事情。
更详细的解释是:
首先,根据this answer,您需要删除二级gradle程序集依赖项,才能使您的POM文件看起来像这样:
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<mainClass>com.myapp.internal.MainLauncher</mainClass>
<addResources>true</addResources>
</configuration>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
然后使用以下命令进行构建:
mvn clean install
其次,根据this sample,您需要将库(在我的示例中为OpenCV)和相应的文件放在路径/类路径中。Here's the link介绍了如何使用Java实现这一点。
一旦这些步骤完成,您就可以使用标准的
java -jar YOUR_JAR_HERE.jar
它应该能正常工作。
https://stackoverflow.com/questions/50553132
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