Unsatisfied dependency expressed through constructor argument with index 0 of type

0
votes

I have an error with Spring 4.1.6.RELEASE.

I don't know where the error is coming from. Autowire annotation is suppose to create the bean for me. What other annotation I'm I missing ?

Here the code

Controller class 

@Controller
@RequestMapping("/rest/accounts")
public class AccountController {

private AccountService accountService;

public AccountController() {}
@Autowired
public AccountController(AccountService accountService) {
    this.accountService = accountService;
}

Repository class

@Service
@Transactional
public class AccountServiceImpl implements AccountService {
@Autowired
private AccountRepo accountRepo;

@Autowired
private BlogRepo blogRepo;

@Override
public Account findAccount(Long id) {
    return accountRepo.findAccount(id);
}

Here the error

HTTP Status 500 - Servlet.init() for servlet appServlet threw exception

type Exception report

message Servlet.init() for servlet appServlet threw exception

description The server encountered an internal error that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Servlet.init() for servlet appServlet threw exception org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668) org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1517) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1474) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:745) root cause

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'accountController' defined in file [/Users/Mayor/Documents/workspace/PascalWebStore/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/PascalWeb/WEB-INF/classes/com/sci/pascal/rest/mvc/AccountController.class]: Unsatisfied dependency expressed through constructor argument with index 0 of type [com.sci.pascal.core.services.AccountService]: : No qualifying bean of type [com.sci.pascal.core.services.AccountService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.sci.pascal.core.services.AccountService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {} org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:749) org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:185) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1139) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1042) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:663) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:629) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:677) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:548) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:489) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) javax.servlet.GenericServlet.init(GenericServlet.java:158) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668) org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1517) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1474) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:745) root cause

org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.sci.pascal.core.services.AccountService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {} org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1301) org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1047) org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:942) org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:813) org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:741) org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:185) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1139) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1042) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:663) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:629) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:677) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:548) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:489) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) javax.servlet.GenericServlet.init(GenericServlet.java:158) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668) org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1517) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1474) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:745) note The full stack trace of the root cause is available in the Apache Tomcat/8.0.21 logs.

Any help are appreciated. Thanks.

2
springspring-mvc
"No qualifying bean of type [com.sci.pascal.core.services.AccountService]" - so you need to mark AccountService as a Bean as it is not a Bean at present. Also you have to add in an XML file <context:component-scan base-package="name of package that AccountService class resides" />. – smoggers
AccountService is an interface, i implemented in the AccountServiceImplemetation class. I also used the service annotation on this class so that spring will recognize it as a bean. but i still get this error - No qualifying bean of type [com.sci.pascal.core.services.AccountService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for dependency. – mayorsanmayor

2 Answers

1
votes

Set this property in your spring-servlet.xml file.

<context:component-scan base-package="base package name" />
0
votes

thanks everyone i found the error spring didn't find the configuration file i included 

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring/business-config.xml</param-value>

in my web.xml file.