Application normally runs on Tomcat embedded in Spring Boot and does not run on Tomcat on my Server

Question

good afternoon. I’m having a problem with an application using Spring Boot 2. Basically it is a Restapi with some "scheduled methods".

In the Spring Boot embedded Tomcat it works normally, runs the scheduled methods and responds to HTTP requests.

I made the "War" Deploy on my production Tomcat server, the status of the application is "Running", but when I make an HTTP request the context is not found and I get error 404. I also noticed that on the Spring Boot embedded server the logs I put using the LOGGER class so that I could follow when a scheduled method was executed are displayed normally, already in my production Tomcat these logs do not appear.

Someone came across something similar?

Below the POM file of my application

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<properties>
    <java.version>1.8</java.version>
</properties>

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

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

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

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-configuration-processor</artifactId>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>com.oracle</groupId>
        <artifactId>ojdbc8</artifactId>
        <version>12.1.0.2</version>
    </dependency>

</dependencies>

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

Answer 1

To run on external Tomcat you have to do two things:

1 - Include dependency in your pom.xml - Already done in your case

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

2 - Change application class to inherit from SpringBootServletInitializer

@SpringBootApplication
public class SpringBootTomcatApplication extends SpringBootServletInitializer {

} 

When I needed to run my application on an external Tomcat I changed these two items and everything went perfect.