Could not exec java with Spring+Maven exit code 1

Question

I am new to Spring/Maven, and am following this tutorial: Serving Web Content with Spring MVC.

Everytime I run mvn spring-boot:run, I get this error:

Answer 1

I made the following changes to make mvn clean spring-boot:run work:

• Move pom.xml to the root directory, which makes the directory hierarchy to be:

Directory hierarchy:

.
├── pom.xml
└── src
    └── main
        ├── java
        │   └── hello
        │       ├── Application.java
        │       └── GreetingController.java
        └── resources
            └── templates
                └── greeting.html

• Commented out the extensions in the following part:

Commented out part:

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <!-- Exclusions to allow SpringBoot execute on HCP -->
        <!--<exclusions>-->
            <!--<exclusion>-->
                <!--<groupId>org.springframework.boot</groupId>-->
                <!--<artifactId>spring-boot-starter-tomcat</artifactId>-->
            <!--</exclusion>-->
            <!--<exclusion>-->
                <!--<groupId>org.apache.tomcat.embed</groupId>-->
                <!--<artifactId>tomcat-embed-el</artifactId>-->
            <!--</exclusion>-->
            <!--<exclusion>-->
                <!--<artifactId>logback-classic</artifactId>-->
                <!--<groupId>ch.qos.logback</groupId>-->
            <!--</exclusion>-->
        <!--</exclusions>-->
    </dependency>

It seems you meant to exclude those dependencies. mvn clean spring-boot:run will just exit successfully if the embed tomcat is excluded, but I think this is the correct behave because there's no container to deploy the application. Anyway, you can try it out and make changes according your requirements.

Answer 2

I've same error as yours and finally I found it was cased by the wrong cooperation version between "spring-boot-starter-parent" and "spring-boot-autoconfigure", thereof making sure with same version. And also check their versions are the newest nor not.

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.5.RELEASE</version>
    <relativePath/>
</parent>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-autoconfigure</artifactId>
        <version>2.1.5.RELEASE</version>
    </dependency>

Answer 3

In my case I just delete "tomcat-embed-el" dependency.

                <exclusion>
                    <groupId>org.apache.tomcat.embed</groupId>
                    <artifactId>tomcat-embed-el</artifactId>
                </exclusion>

And it works.....

Answer 4

In my case I just delete "devtools" dependency.

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <optional>true</optional>
    </dependency>

And it works!

Answer 5

Sometimes the port might just be already in use, make sure you kill all java processes before running an application.