Maven generating actual jar as .jar.original instead of .jar file

问题

Basically I have a Maven Project and I am trying to generate a jar of my project using mvn clean compile package through spring tool suite using below pom.xml.

After the command is executed, I get 2 jar files generated in my target folder - {project-name}.jar & {project-name}.jar.original

The .jar file contains Spring boot framework class files having this contents while the .jar.original file contains actual class files of my application.

Snapshot of target folder

I also tried using mvn clean install but no luck with it. Moreover, the only 1 file is installed which is useless for me, because it does not contain any class files of my application but contains spring framework classes.

pom.xml

<?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.commonporject</groupId>
    <artifactId>commonporject</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>commonporject</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.0.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>com.ibm.db2.jcc</groupId>
            <artifactId>db2jcc4</artifactId>
            <version>10.1</version>
        </dependency>
        <!-- other dependencies -->
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <compilerVersion>1.8</compilerVersion>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

Console:

[INFO] Scanning for projects...
[INFO] 
[INFO] ----------------------< com.commonporject:commonporject >----------------------
[INFO] Building commonporject 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:3.1.0:clean (default-clean) @ commonporject ---
[INFO] Deleting C:\Users\Aadil\Documents\workspace-spring-tool-suite-4-4.0.0.RELEASE\commonporject\target
[INFO] 
[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) @ commonporject ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO] Copying 0 resource
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.0:compile (default-compile) @ commonporject ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 6 source files to C:\Users\Aadil\Documents\workspace-spring-tool-suite-4-4.0.0.RELEASE\commonporject\target\classes
[INFO] 
[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) @ commonporject ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO] Copying 0 resource
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.0:compile (default-compile) @ commonporject ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] --- maven-resources-plugin:3.1.0:testResources (default-testResources) @ commonporject ---
[INFO] Not copying test resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.0:testCompile (default-testCompile) @ commonporject ---
[INFO] Not compiling test sources
[INFO] 
[INFO] --- maven-surefire-plugin:2.22.1:test (default-test) @ commonporject ---
[INFO] Tests are skipped.
[INFO] 
[INFO] --- maven-jar-plugin:3.1.0:jar (default-jar) @ commonporject ---
[INFO] Building jar: C:\Users\Aadil\Documents\workspace-spring-tool-suite-4-4.0.0.RELEASE\commonporject\target\commonporject-0.0.1-SNAPSHOT.jar
[INFO] 
[INFO] --- spring-boot-maven-plugin:2.1.0.RELEASE:repackage (repackage) @ commonporject ---
[INFO] Replacing main artifact C:\Users\Aadil\Documents\workspace-spring-tool-suite-4-4.0.0.RELEASE\commonporject\target\commonporject-0.0.1-SNAPSHOT.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 7.706 s
[INFO] Finished at: 2018-11-04T12:28:37+05:30
[INFO] ------------------------------------------------------------------------

回答1:

spring-boot-maven plugin by default uses the repackage goal which packages all dependencies mentioned in the pom file. When this happens, your project's classes and resources jar is renamed to "original".

Please refer the below documentation for more details about this plugin.

https://docs.spring.io/spring-boot/docs/current/reference/html/build-tool-plugins-maven-plugin.html

来源：https://stackoverflow.com/questions/53138576/maven-generating-actual-jar-as-jar-original-instead-of-jar-file