SpringBoot no main manifest attribute (maven)

Question

When running my jar file: java -jar target/places-1.0-SNAPSHOT.jar

I'm getting the next error :

no main manifest attribute, in target/places-1.0-SNAPSHOT.jar

The pom.xml contains the spring-boot-maven-plugin:

<plugin>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
    <configuration>
        <mainClass>com.places.Main</mainClass>
    </configuration>
</plugin>

I also tried to create a MANIFEST.MF file and specifying the class, but it didnt help.

In addition, I also tried:

<properties>
      <!-- The main class to start by executing "java -jar" -->
      <start-class>com.places.Main</start-class>
</properties>

Main class:

@SpringBootApplication
public class Main {
    public static void main(String[] args) throws InterruptedException {
        SpringApplication.run(Main.class,args);
    }
}

Any idea what else can I try?

Of course, inside the Main class. I put in in the original post — JeyJ, Feb 25 '19 at 13:42
can you specify more info, spring-boot version & maven version. — Laksitha Ranasingha, Feb 25 '19 at 13:43
Possible duplicate of [Failed to load Main-Class manifest attribute while running java -jar](https://stackoverflow.com/questions/19620342/failed-to-load-main-class-manifest-attribute-while-running-java-jar) — tmarwen, Feb 25 '19 at 14:20

score 126 · Accepted Answer · edited Mar 14 '22 at 21:22

126

Try adding repackage goal to execution goals.

Otherwise you would need to call the plugin explicitly as mvn package spring-boot:repackage.

With the goal added, you have to call only mvn package.

<plugin>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
    <configuration>
        <mainClass>com.places.Main</mainClass>
    </configuration>

    <executions>
        <execution>
            <goals>
                <goal>repackage</goal>
            </goals>
        </execution>
    </executions>
</plugin>

edited Mar 14 '22 at 21:22

ℛɑƒæĿᴿᴹᴿ

4,983
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answered Feb 25 '19 at 13:57

Matej

6,004
2
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3

It helped ! Can you explain why I need to package it ? – JeyJ Feb 25 '19 at 14:02
11

If you have `spring-boot-starter-parent` in you pom, you don't need to define `repackage` goal in the plugin. Official doc: https://docs.spring.io/spring-boot/docs/2.3.0.RELEASE/maven-plugin/reference/html/#repackage – Bandham Manikanta Jun 17 '20 at 17:42
3

The reason for this is that you are no using spring as parent I assume you have it set on dependencyManagement, then you have to explicit define which goal to be hooked for spring-boot-maven-plugin ir order to get an executable jar file. In this case repackage. – Kevin Valdez Jul 02 '20 at 04:11
similar issue with multi module: https://stackoverflow.com/questions/70833195/spring-boot-multi-module-spring-boot-maven-plugin-compilation-failure – emoleumassi Jan 24 '22 at 13:37

tmarwen · Answer 2 · 2020-05-24T14:17:43.583

During the Maven package lifecycle phase, the jar archive is enhanced by Spring Boot Maven Plugin and the original jar file (that should have been built using the standard maven-jar-plugin) is replaced with an enhanced executable jar.

Hence you have either to issue the spring-boot:repackage goal yourself when building your module:

mvn package spring-boot:repackage

Or add the goal explicitly within the plugin configuration:

<plugin>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
    <configuration>
        <mainClass>com.places.Main</mainClass>
    </configuration>
    <executions>
        <execution>
            <goals>
                <goal>repackage</goal>
            </goals>
        </execution>
    </executions>
</plugin>

You can find more details about the Spring Boot Maven Plugin repackage goal within the official documentation.

https://github.com/ajeetkumarv/healthlog I tried both repackage and plugin but did not work. main method is in application module — Ajeetkumar, Sep 23 '20 at 11:19
Hi @Ajeetkumar, could you report a new question with your build configuration and point it out. I will be glad to help. — tmarwen, Sep 24 '20 at 13:49

score 24 · Answer 3 · answered Nov 15 '19 at 22:39

3 things:
- You have the parent entry in your pom.
- Verify that your plugin is in the build portion of the pom.
- You have a class with the @SpringBootApplicaion annotation.

pom.xml:

...  
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.8.RELEASE</version>
  </parent>

   <build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
    </plugins>
  </build>
...

And a class that looks something like this:

@SpringBootApplication
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

}

score 4 · Answer 4 · edited Mar 15 '22 at 16:42

4

You can specify a parent POM e.g. :

<parent>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-parent</artifactId>
   <version>2.1.4.RELEASE</version>
</parent>

During the package goal, the repackage goal will be executed and you'll then get an executable jar.

edited Mar 15 '22 at 16:42

pringi

3,987
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answered May 02 '19 at 03:50

laurentJ

41
1

score 4 · Answer 5 · edited Mar 15 '22 at 16:46

Reback your jar or war using the following command:

mvn package spring-boot:repackage

Add the plugin in plugins parent node like below in pom.xml:

<plugin>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-maven-plugin</artifactId>
   <configuration>                   
      <mainClass>com.sify.scdm.solutionconfigurator.ScdmApplication</mainClass>
   </configuration>
   <executions>
      <execution>
      <goals>
         <goal>repackage</goal>
      </goals>
      </execution>
   </executions>
</plugin>

score 3 · Answer 6 · answered Nov 03 '21 at 05:05

added build tag in pom.xml as below solved issue for me.

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

score 0 · Answer 7 · edited Jul 13 '21 at 15:45

Add the plugin below.This worked for me

 <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-shade-plugin</artifactId>
      <version>1.6</version>
      <executions>
           <!-- Run shade goal on package phase -->
           <execution>
                <phase>package</phase>
                <goals>
                     <goal>shade</goal>
                </goals>
                <configuration>
                     <transformers>
                          <!-- add Main-Class to manifest file -->
                          <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                               <mainClass>MainClass</mainClass>
                               <manifestEntries>
                                    <Class-Path>.</Class-Path>
                                </manifestEntries>
                          </transformer>
                          <transformer
                                 implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                                 <resource>META-INF/spring.handlers</resource>
                          </transformer>
                          <transformer
                                 implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                                 <resource>META-INF/spring.schemas</resource>
                          </transformer>
                     </transformers>
                </configuration>
           </execution>
      </executions>
</plugin>

score 0 · Answer 8 · answered Aug 06 '23 at 12:48

0

Add this in pom.xml

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

answered Aug 06 '23 at 12:48

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SpringBoot no main manifest attribute (maven)

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