在外部TOMCAT中启动后，Spring Boot Application立即关闭

Question

Spring boot immediately shuts down after starting in external TOMCAT. But in Eclipse this runs well and JAR with embed too.

I use Tomcat 7 and JAVA 8. I read a lot of webs and documentation which do not exist.

My Eclipse POM is:

http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4.0.0

<groupId>com.suez.demo</groupId>
<artifactId>Myapp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>

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

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.6.RELEASE</version>
    <relativePath/>
</parent>
<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
    <start-class>com.suez.demo.SuezApplication</start-class>
</properties>
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>       
    <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
    </dependency>
    <dependency>
        <groupId>javax.mail</groupId>
        <artifactId>mail</artifactId>
        <version>1.4.7</version>
    </dependency>       
    <dependency>
        <groupId>org.json</groupId>
        <artifactId>json</artifactId>
    </dependency>       
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web-services</artifactId>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
      </dependency>
    <dependency>
        <groupId>org.apache.xmlbeans</groupId>
        <artifactId>xmlbeans</artifactId>
         <version>2.3.0</version>
    </dependency>   
    <dependency>
        <groupId>com.notnoop.apns</groupId>
        <artifactId>apns</artifactId>
         <version>1.0.0.Beta6</version>
    </dependency>
 <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-config</artifactId>
    </dependency>
     <dependency>
        <groupId>io.jsonwebtoken</groupId>
        <artifactId>jjwt</artifactId>
         <version>0.7.0</version>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
             <version>2.0.0.RELEASE</version>
        </plugin>           
          <plugin>
            <groupId>org.jvnet.jaxb2.maven2</groupId>
            <artifactId>maven-jaxb2-plugin</artifactId>
            <version>0.13.3</version>
            <executions>
                <execution>
                    <goals>
                        <goal>generate</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
                <generatePackage>com.suez.demo.ws</generatePackage>
                <generateDirectory>${project.basedir}/src/main/java</generateDirectory>
                <schemaDirectory>${project.basedir}/src/main/resources</schemaDirectory>
                <schemaIncludes>
                    <include>*.wsdl</include>
                </schemaIncludes>
            </configuration>
        </plugin> 

    </plugins>
</build>

Tomcat output log last lines are:

2018-06-29 10:27:37.874  INFO 640 --- [ost-startStop-3] com.suez.demo.SuezApplication            : Started SuezApplication in 29.104 seconds (JVM running for 91.714)
2018-06-29 10:27:37.905  INFO 640 --- [ost-startStop-3] ationConfigEmbeddedWebApplicationContext : Closing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@75e8c829: startup date [Fri Jun 29 10:27:11 CEST 2018]; root of context hierarchy
2018-06-29 10:27:37.936  INFO 640 --- [ost-startStop-3] o.s.j.e.a.AnnotationMBeanExporter        : Unregistering JMX-exposed beans on shutdown
2018-06-29 10:27:37.952  INFO 640 --- [ost-startStop-3] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'

Can someone help me please?

Answer 1

It's hard to say out of the information you've provided, but what looks suspicious to me is that you're using spring-boot-starter-web which in turn brings tomcat starter transitively.

I see that the packaging of this module is WAR, so its intended to run in an external web container, but on the other hand, you say that it runs fine in "JAR with embed too". So it's a little bit confusing.

I've never by myself deployed spring boot application as a WAR file, but I believe you can go to Start.spring.io and generate a sample application that will package itself into WAR. This option is not shown by default, so you'll have to click on "switch to the full version" link