Spring boot war deployment - Failed to start component error

Question

I have a spring boot application. It's working fine locally on my localhost.

Now I want to deploy it to the hosting server. Generated the war file using mvn clean package.

Uploaded the file to the hosting server and started tomcat. Now I'm getting the following error.

Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/appfolder]

How to fix it?

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.5.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    
    <groupId>mygroupid</groupId>
    <artifactId>myartifactid</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>myappname</name>
    <packaging>war</packaging>
    
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>11</java.version>
    </properties>

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>           
            <version>2.0.3.RELEASE</version>
        </dependency>
        
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>           
            <version>2.0.3.RELEASE</version>
        </dependency>
        
        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <version>42.2.12</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-validation</artifactId>
        </dependency>
        
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.8</version>
        </dependency>
        
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-web</artifactId>
            <version>5.0.7.RELEASE</version>
        </dependency>
        
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-config</artifactId>
            <version>5.0.7.RELEASE</version>
        </dependency>
        
        
        <dependency>
            <groupId>org.thymeleaf.extras</groupId>
            <artifactId>thymeleaf-extras-springsecurity4</artifactId>
            <version>2.1.2.RELEASE</version>
        </dependency>
        
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        
        
    </dependencies>

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

</project>

error log

    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1109)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:405)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
    at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:173)
    at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:153)
    at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:95)
    at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:172)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5094)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    ... 38 more
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:275)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
    at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
    at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:176)
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:118)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1224)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1255)
    at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58)
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365)
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:391)
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:378)
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1853)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1790)
    ... 59 more
Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
    at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:100)
    at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:54)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:137)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263)
    ... 76 more

12-Jan-2021 11:19:32.020 GRAVE [main] org.apache.catalina.startup.HostConfig.deployWAR Error deploying web application archive [/home/xar5ryilra4/appservers/apache-tomcat-9.0.4/webapps/myapp-0.0.1-SNAPSHOT.war]
 java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/myapp-0.0.1-SNAPSHOT]]
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:744)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:716)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:703)
    at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:976)
    at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1847)
    at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
    at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:118)
    at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:761)
    at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:431)
    at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1575)
    at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:308)
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
    at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:424)
    at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:367)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:964)
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:839)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1425)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1415)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
    at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:941)
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:671)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:353)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:493)

12-Jan-2021 11:19:32.022 INFORMAÇÕES [main] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive [/home/xar5ryilra4/appservers/apache-tomcat-9.0.4/webapps/myapp-0.0.1-SNAPSHOT.war] has finished in [18,269] ms
12-Jan-2021 11:19:32.023 INFORMAÇÕES [main] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/home/xar5ryilra4/appservers/apache-tomcat-9.0.4/webapps/manager]
12-Jan-2021 11:19:32.142 INFORMAÇÕES [main] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/home/xar5ryilra4/appservers/apache-tomcat-9.0.4/webapps/manager] has finished in [119] ms
12-Jan-2021 11:19:32.142 INFORMAÇÕES [main] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/home/xar5ryilra4/appservers/apache-tomcat-9.0.4/webapps/ROOT]
12-Jan-2021 11:19:32.239 INFORMAÇÕES [main] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/home/xar5ryilra4/appservers/apache-tomcat-9.0.4/webapps/ROOT] has finished in [97] ms
12-Jan-2021 11:19:32.240 INFORMAÇÕES [main] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/home/xar5ryilra4/appservers/apache-tomcat-9.0.4/webapps/host-manager]
12-Jan-2021 11:19:32.355 INFORMAÇÕES [main] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/home/xar5ryilra4/appservers/apache-tomcat-9.0.4/webapps/host-manager] has finished in [115] ms
12-Jan-2021 11:19:32.418 INFORMAÇÕES [main] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/home/xar5ryilra4/appservers/apache-tomcat-9.0.4/webapps/docs]
12-Jan-2021 11:19:32.450 INFORMAÇÕES [main] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/home/xar5ryilra4/appservers/apache-tomcat-9.0.4/webapps/docs] has finished in [94] ms
12-Jan-2021 11:19:32.450 INFORMAÇÕES [main] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/home/xar5ryilra4/appservers/apache-tomcat-9.0.4/webapps/examples]
12-Jan-2021 11:19:32.844 INFORMAÇÕES [main] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/home/xar5ryilra4/appservers/apache-tomcat-9.0.4/webapps/examples] has finished in [394] ms
12-Jan-2021 11:19:32.848 INFORMAÇÕES [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-4453"]
12-Jan-2021 11:19:32.860 INFORMAÇÕES [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-4451"]
12-Jan-2021 11:19:32.921 INFORMAÇÕES [main] org.apache.catalina.startup.Catalina.start Server startup in 19280 ms

Answer 1

To make a spring boot application run in external tomcat, you have to extend it to SpringBootServletInitializer. Modify your code as below

@SpringBootApplication
public class Java3Application extends SpringBootServletInitializer{
    public static void main(String[] args) {
        SpringApplication.run(Java3Application.class, args);

    }
}

Also, below dependency should be present

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