SpringBoot has a built-in tomcat, and you can start the app just by executing jar.
I didn't know how to deploy to tomcat built separately, so I looked it up.
Create a template project for verification with "Spring Initializr" with gradle. https://start.spring.io/
Make something like WebAPI in the text.
Create an ordinary controller.
AppController.java
package warapp.app.controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class AppController {
@GetMapping("/")
public String index() {
return "Hello World!";
}
@GetMapping("/hoge")
public String hoge() {
return "hogehoge";
}
}
Execute the Application class and start Spring Boot. I was able to get the expected results by connecting to "localhost: 8080" and "localhost: 8080 / hoge".
Two conditions must be met in order to place it on Tomcat.
In the state created by Initializr, there is a task to create a jar, but there is no task to create a war. The method was officially written.
Spring Boot Reference Documentation
All you have to do is follow this procedure.
@ SpringBootApplication a subclass of SpringBootServletInitializer.configure method.【Change before】
AppApplication.java
package warapp.app;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class AppApplication {
public static void main(String[] args) {
SpringApplication.run(AppApplication.class, args);
}
}
** [After change] **
AppApplication.java
package warapp.app;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
@SpringBootApplication
public class AppApplication extends SpringBootServletInitializer {
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
return builder.sources(AppApplication.class);
}
public static void main(String[] args) {
SpringApplication.run(AppApplication.class, args);
}
}
Add the war plugin to build.gradle.
build.gradle
plugins {
id 'org.springframework.boot' version '2.2.4.RELEASE'
id 'io.spring.dependency-management' version '1.0.9.RELEASE'
id 'java'
}
group = 'war-app'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'
configurations {
developmentOnly
runtimeClasspath {
extendsFrom developmentOnly
}
compileOnly {
extendsFrom annotationProcessor
}
}
repositories {
mavenCentral()
}
//Add one line below
apply plugin: 'war'
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-web'
compileOnly 'org.projectlombok:lombok'
developmentOnly 'org.springframework.boot:spring-boot-devtools'
annotationProcessor 'org.projectlombok:lombok'
testImplementation('org.springframework.boot:spring-boot-starter-test') {
exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
}
}
test {
useJUnitPlatform()
}
Add the following settings to dependencies.
build.gradle
plugins {
id 'org.springframework.boot' version '2.2.4.RELEASE'
id 'io.spring.dependency-management' version '1.0.9.RELEASE'
id 'java'
}
group = 'war-app'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'
configurations {
developmentOnly
runtimeClasspath {
extendsFrom developmentOnly
}
compileOnly {
extendsFrom annotationProcessor
}
}
repositories {
mavenCentral()
}
apply plugin: 'war'
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-web'
compileOnly 'org.projectlombok:lombok'
developmentOnly 'org.springframework.boot:spring-boot-devtools'
annotationProcessor 'org.projectlombok:lombok'
testImplementation('org.springframework.boot:spring-boot-starter-test') {
exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
}
//Add the following
providedRuntime 'org.springframework.boot:spring-boot-starter-tomcat'
}
test {
useJUnitPlatform()
}
Now you can build the war file.
【Execution result】
22:31:35: Executing task 'bootWar'...
> Task :compileJava UP-TO-DATE
> Task :processResources UP-TO-DATE
> Task :classes UP-TO-DATE
> Task :bootWar
BUILD SUCCESSFUL in 1s
3 actionable tasks: 1 executed, 2 up-to-date
22:31:37: Task execution finished 'bootWar'.
A file called "~ -0.0.1-SNAPSHOT.war" is created under <project root> / build / libs.
「～-0.0.1-SNAPSHOT.war」→「～.war」 ex. 「app-0.0.1-SNAPSHOT.war」→「app.war」
Place "~ .war" in Tomcat's webapps directory. Since I am using xampp this time, I placed it in "xampp \ tomcat \ webapps".
Start tomcat from the xampp control panel. When started, the war file is expanded.
You should see the following error in "xampp \ tomcat \ logs \ catalina.yyyy-mm-dd.log".
console:catalina.2020-02-24.log
information:Web application archive C:\xampp\tomcat\webapps\app.Deploy war
2 24, 2020 10:43:45 pm org.apache.catalina.startup.TldConfig execute
information: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
2 24, 2020 10:43:49 pm org.apache.catalina.core.ContainerBase addChildInternal
Serious: ContainerBase.addChild: start:
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/app]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:1018)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:994)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:662)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1127)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:2020)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'defaultValidator' defined in class path resource [org/springframework/boot/autoconfigure/validation/ValidationAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.validation.beanvalidation.LocalValidatorFactoryBean]: Factory method 'defaultValidator' threw exception; nested exception is java.lang.NoClassDefFoundError: javax/el/ELManager
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:656)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:484)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1338)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:879)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:152)
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:132)
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:92)
at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:172)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5709)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
... 10 more
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.validation.beanvalidation.LocalValidatorFactoryBean]: Factory method 'defaultValidator' threw exception; nested exception is java.lang.NoClassDefFoundError: javax/el/ELManager
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185)
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:651)
... 32 more
Caused by: java.lang.NoClassDefFoundError: javax/el/ELManager
at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.buildExpressionFactory(ResourceBundleMessageInterpolator.java:88)
at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.<init>(ResourceBundleMessageInterpolator.java:47)
at org.hibernate.validator.internal.engine.ConfigurationImpl.getDefaultMessageInterpolator(ConfigurationImpl.java:474)
at org.springframework.boot.validation.MessageInterpolatorFactory.getObject(MessageInterpolatorFactory.java:53)
at org.springframework.boot.autoconfigure.validation.ValidationAutoConfiguration.defaultValidator(ValidationAutoConfiguration.java:57)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
... 33 more
2 24, 2020 10:43:49 pm org.apache.catalina.startup.HostConfig deployWAR
Serious:Web application archive C:\xampp\tomcat\webapps\app.Error deploying war
java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/app]]
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:1022)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:994)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:662)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1127)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:2020)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
It seems that the error is caused by the old javax / el / library on the tomcat side.
The version is 2.2, but it needs to be raised to 3.0 or higher.
Download the 3.0 jar from the link below and place it under "xampp \ tomcat \ libs". At this time, the old version of the jar may be deleted.
After placing the jar, restart Tomcat (STOP → START).
After starting up, check the log, and if there is no stack trace, there is no problem.
Make sure it is deployed in your browser.
Connect to "localhost: 8080 / app" with a browser → Check "Hello World!" Connect to "localhost: 8080 / app / hoge" with a browser → Check "hogehoge"
It was confirmed that it was deployed normally.
I've been indebted to Tomcat so far, but it was a good study because I had never deployed it myself. Rest assured that you can now handle it yourself without using the built-in tomcat of eclipse and the built-in tomcat of Spring Boot. I will try installing and deploying to the Linux environment in the future.
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