CODEWITHSUNDEEP
javamavenspring-boot
Vikram
Vikram

Reputation: 391

Spring boot maven plugin class not found

I have three maven project one is pom package and other 2 are jar packaging here is the admin-aggreagator pom

<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.sounds.bvs</groupId>
    <artifactId>admin-aggregator</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>pom</packaging>


    <modules>
        <module>../admin-lib</module>
        <module>../admin-rest</module>
    </modules>


    <properties>
        <project.build.SourceEncoding>UTF-8</project.build.SourceEncoding>
        <spring-boot-version>2.0.4.RELEASE</spring-boot-version>
        <spring-version>2.0.4.RELEASE</spring-version>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
        <start-class>com.sounds.bvs.AdminRestApp</start-class>
    </properties>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.RELEASE</version>
    </parent>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.sounds.bvs</groupId>
                <artifactId>admin-lib</artifactId>
                <version>${project.version}</version>
            </dependency>
            <dependency>
                <groupId>com.sounds.bvs</groupId>
                <artifactId>admin-rest</artifactId>
                <version>${project.version}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                        <configuration>
                            <classifier>exec</classifier>
                            <mainClass>${start-class}</mainClass>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven.compiler.plugin</artifactId>
                <version>3.8.0</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <showDeprication>true</showDeprication>
                    <showWarnings>true</showWarnings>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <repositories>
        <repository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

    <pluginRepositories>
        <pluginRepository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </pluginRepository>
        <pluginRepository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>

</project>

And the admin-rest pom.xml and its Main class i'm not getting as what i'm missing as the ctrl-click is navigating to respective project and type search is able to find the main class in admin-rest project ctrl+shift+T is also getting still it is showing same,

<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>

    <parent>
        <groupId>com.sounds.bvs</groupId>
        <artifactId>admin-aggregator</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <artifactId>admin-rest</artifactId>

    <dependencies>
        <dependency>
            <groupId>com.sounds.bvs</groupId>
            <artifactId>admin-lib</artifactId>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-jetty -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jetty</artifactId>
        </dependency>


    </dependencies>
</project>

The Main Class AdminRestApp.java and i'm trying to run the admin-aggregator with 

mvn clean spring-boot:run
mvnw.cmd clean spring-boot:run
./mvnw spring-boot:run

but none are working

package com.sounds.bvs;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class AdminRestApp {

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



and the exception i see class not found exception i tried all which were from similar topic none helped, the start-class tag is also place and hard code the full path com.sounds.bvs.AdminRestApp in mainClass still that also did not help,

i have tried changing spring boot version as well as maven compiler plugin version that also dint helped please help is need very badly.

earlier the package path was large com.sounds.bvs.admin.rest that time also same issue changed the package name also dint helped

please let me know what i'm missing thanks in advance.

[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] `enter code here`
[INFO] admin-aggregator
[INFO] admin-lib
[INFO] admin-rest
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building admin-aggregator 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:3.0.0:clean (default-clean) @ admin-aggregator ---
[INFO] 
[INFO] >>> spring-boot-maven-plugin:2.0.4.RELEASE:run (default-cli) > test-compile @ admin-aggregator >>>
[INFO] 
[INFO] <<< spring-boot-maven-plugin:2.0.4.RELEASE:run (default-cli) < test-compile @ admin-aggregator <<<
[INFO] 
[INFO] --- spring-boot-maven-plugin:2.0.4.RELEASE:run (default-cli) @ admin-aggregator ---
[WARNING] 
java.lang.ClassNotFoundException: com.sounds.bvs.AdminRestApp
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run(AbstractRunMojo.java:491)
    at java.lang.Thread.run(Thread.java:745)
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] admin-aggregator ................................... FAILURE [ 42.358 s]
[INFO] admin-lib .......................................... SKIPPED
[INFO] admin-rest ......................................... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 56.280 s
[INFO] Finished at: 2018-08-10T00:43:37+05:30
[INFO] Final Memory: 17M/111M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.0.4.RELEASE:run (default-cli) on project admin-aggregator: An exception occurred while running. com.sounds.bvs.AdminRestApp -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

Upvotes: 27

Views: 79895

Answers (8)

Asror
Asror

Reputation: 31

You need to add the Spring Boot version like so:

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

Upvotes: 2

Eduart Doria
Eduart Doria

Reputation: 111

Only add the version.

<groupId>org.springframework.boot</groupId> 
<artifactId>spring-boot-maven-plugin</artifactId> 
<version>${project.parent.version}</version>

Exception Error

Upvotes: 11

saheel
saheel

Reputation: 138

Adding ${project.parent.version} to the dependency in pom.xml solved the problem for me.

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-maven-plugin</artifactId>
  <version>${project.parent.version}</version>
  <type>maven-plugin</type>
</dependency>

Upvotes: 13

Bharat Kathuria
Bharat Kathuria

Reputation: 941

Adding a spring boot version solved my problem.

    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <version>2.4.1</version>
        </plugin>
    </plugins>

replace with your version of spring boot in Maven Tab ->plugins

Upvotes: 84

Mirrashad Hasanov
Mirrashad Hasanov

Reputation: 339

it worked for me.

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

Upvotes: 33

Marty McAir
Marty McAir

Reputation: 81

I read here https://docs.spring.io/spring-android/docs/2.0.0.M3/reference/html/maven.html. And followed the link: https://search.maven.org/ - typed in the search: spring-boot-maven-plugin..

And get my dependency. And it worked for me.

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-maven-plugin</artifactId>
  <version>2.3.4.RELEASE</version>
  <type>maven-plugin</type>
</dependency>

Upvotes: 4

Michael
Michael

Reputation: 112

I deleted .m2 folder and reinstall pom.xml file and the problem was solved.

Upvotes: 0

davidxxx
davidxxx

Reputation: 131346

You have to execute the mvn spring-boot:run command from the module maven that contains the Spring Boot application (admin-rest), not from the parent module (admin-aggregator).
But you execute it from the parent module.

Upvotes: 1

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