SpringBoot Failed to Start app with error (Failed to parse configuration class) - spring-boot

Question

The spring boot app is running and working fine in local dev area. When I deploy to test environment and try to start the app, I am getting below error. I generated jar file by using gradlew.bat
Any insight on this error? Thanks in advance.
Error:
2021-03-29 23:15:14,283 INFO Version[21] HV000001: Hibernate Validator 6.1.7.Final
2021-03-29 23:15:35,502 WARN AnnotationConfigServletWebServerApplicationContext[590] Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [com.org.SpringBootApplication]; nested exception is java.net.ConnectException: Connection timed out: connect
2021-03-29 23:15:35,564 ERROR SpringApplication[856] Application run failed
org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [com.org.SpringBootApplication]; nested exception is java.net.ConnectException: Connection timed out: connect
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:189)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:330)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:246)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:311)
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:112)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:745)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:563)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:326)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1311)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1300)
at com.org.SpringBootApplication.main(SpringBootApplication.java:13)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:107)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88)
Caused by: java.net.ConnectException: Connection timed out: connect
at java.base/java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.base/java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.base/java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.base/java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.base/java.net.PlainSocketImpl.connect(Unknown Source)
at java.base/java.net.Socket.connect(Unknown Source)
at java.base/sun.net.ftp.impl.FtpClient.doConnect(Unknown Source)
at java.base/sun.net.ftp.impl.FtpClient.tryConnect(Unknown Source)
at java.base/sun.net.ftp.impl.FtpClient.connect(Unknown Source)
at java.base/sun.net.ftp.impl.FtpClient.connect(Unknown Source)
at java.base/sun.net.www.protocol.ftp.FtpURLConnection.connect(Unknown Source)
at java.base/sun.net.www.protocol.ftp.FtpURLConnection.getInputStream(Unknown Source)
at org.springframework.core.io.UrlResource.getInputStream(UrlResource.java:186)
at org.springframework.core.io.support.EncodedResource.getInputStream(EncodedResource.java:159)
at org.springframework.core.io.support.PropertiesLoaderUtils.fillProperties(PropertiesLoaderUtils.java:110)
at org.springframework.core.io.support.PropertiesLoaderUtils.fillProperties(PropertiesLoaderUtils.java:81)
at org.springframework.core.io.support.PropertiesLoaderUtils.loadProperties(PropertiesLoaderUtils.java:67)
at org.springframework.core.io.support.ResourcePropertySource.<init>(ResourcePropertySource.java:67)
at org.springframework.core.io.support.DefaultPropertySourceFactory.createPropertySource(DefaultPropertySourceFactory.java:37)
at org.springframework.context.annotation.ConfigurationClassParser.processPropertySource(ConfigurationClassParser.java:463)
at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:280)
at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:250)
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:199)
at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:304)
at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:250)
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:207)
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:175)
... 22 common frames omitted
Here is build.gradle file:
plugins {
id 'org.springframework.boot' version '2.4.3'
id 'io.spring.dependency-management' version '1.0.11.RELEASE'
id 'org.asciidoctor.convert' version '1.5.8'
id 'java'
}
group = 'abc'
version = '1.0.0'
sourceCompatibility = 10
configurations {
compileOnly {
extendsFrom annotationProcessor
}
}
repositories {
maven { url "https://plugins.gradle.org/m2/" }
maven { url 'https://repo1.maven.org/maven2/' }
}
ext {
set('snippetsDir', file("build/generated-snippets"))
}
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-data-jdbc'
implementation 'org.springframework.boot:spring-boot-starter-jdbc'
implementation 'org.springframework.boot:spring-boot-starter-mail'
implementation 'org.springframework.boot:spring-boot-starter-web'
implementation group: 'org.springframework.boot', name: 'spring-boot-starter-validation', version: spring_boot_starter_validation_version
runtimeOnly 'com.microsoft.sqlserver:mssql-jdbc'
implementation group: 'org.apache.commons', name: 'commons-lang3', version: apache_commons_lang_version
compileOnly 'org.projectlombok:lombok'
annotationProcessor 'org.springframework.boot:spring-boot-configuration-processor'
annotationProcessor 'org.projectlombok:lombok'
testImplementation 'org.springframework.boot:spring-boot-starter-test'
testImplementation 'org.springframework.restdocs:spring-restdocs-mockmvc'
compile 'commons-validator:commons-validator:1.4.1'
}
test {
outputs.dir snippetsDir
useJUnitPlatform()
}
asciidoctor {
inputs.dir snippetsDir
dependsOn test
}
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Answer 1

Error shows that you are having some FTP server related configurations, and those configurations are not working on your test server (or FTP server is not reachable from your test server). Check those configurations, and it will be fine.