How to fix BeanInstantiationException? - spring-boot

Question

I'm writing an application with Spring Boot and I have a problem, I tried searching for solutions on the internet but failed. Anyone can help me This is my code, thank you very much.
FTPController.java
#Controller
#RequestMapping("api/files")
public class FTPController {
public FTPController(StorageService _storageService) {
_storageService.init();
}
}
StorageService.java
public interface StorageService {
void init();
}
StorageServiceImpl.java
#Service
public class StorageServiceImpl implements StorageService {
private Path location;
public StorageServiceImpl() {
location = Paths.get(PathUtil.getPathUpload());
}
#Override
public void init() {
try {
Files.createDirectories(location);
} catch (IOException e) {
throw new FileException("Could not initialize storage", e);
}
}
}
PathUtil.java
public class PathUtil {
//private static final String USER_DIR = System.getProperty("user.dir");
private static final String USER_DIR = Constants.getUserDir();
private static final String PATH_RESOURCES = USER_DIR + "/src/main/resources/";
public static String getPathUpload() {
return PATH_RESOURCES + "upload";
}
}
Constants.java
#Configuration
#PropertySource({"classpath:config.properties"})
public class Constants implements EnvironmentAware {
private static Environment env;
#Override
public void setEnvironment(Environment environment) {
Constants.env = environment;
}
#Bean
public static PropertySourcesPlaceholderConfigurer propertyConfigInDev() {
return new PropertySourcesPlaceholderConfigurer();
}
public static String getUserDir() {
return env.getProperty("USER_DIR");
}
}
config.properties
USER_DIR=user.dir
Log
13:53:48.146 [main] ERROR o.s.boot.SpringApplication - Application run failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'FTPController' defined in file [D:\Git\java\Boot\target\classes\com\spring\controller\FTPController.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'storageServiceImpl' defined in file [D:\Git\java\Boot\target\classes\com\spring\service\impl\StorageServiceImpl.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.spring.service.impl.StorageServiceImpl]: Constructor threw exception; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:769)
at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:218)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1325)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1171)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:849)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:316)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248)
at com.spring.BootApplication.main(BootApplication.java:14)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'storageServiceImpl' defined in file [D:\Git\java\Boot\target\classes\com\spring\service\impl\StorageServiceImpl.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.spring.service.impl.StorageServiceImpl]: Constructor threw exception; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:304)
at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:171)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1325)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1171)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:277)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1247)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1167)
at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:857)
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:760)
... 19 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.spring.service.impl.StorageServiceImpl]: Constructor threw exception; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:184)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:117)
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:300)
... 33 common frames omitted
Caused by: java.lang.ExceptionInInitializerError: null
at com.spring.service.impl.StorageServiceImpl.<init>(StorageServiceImpl.java:37)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:172)
... 35 common frames omitted
Caused by: java.lang.NullPointerException: null
at com.spring.util.Constants.getUserDir(Constants.java:52)
at com.spring.util.PathUtil.<clinit>(PathUtil.java:7)
... 41 common frames omitted
Sorry becaue my english is bad.

Answer 1

This is happening because setEnvironment is not getting called.
To fix this either
Option 1: Move Constants.java to com.spring package
OR
Option 2: Add #ComponentScan(basePackages = { "com.spring.util" }) in BootApplication