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org.springframework.beans.factory. UnsatisfiedDependencyException when autowiring

 
Greenhorn
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I am having an issue when publishing my project to my server, I have tried several solutions and I couldn't make it work, I have all annotations in place and the XML configuration done correctly as well.

UserController.java

   

UserServiceImpl.java

 

UserDAOImpl.java

   

UserDetailsServiceImpl.java

   

db-config.xml

   

dispatcher-servlet.xml

   
 
 
Paul Herrerias
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web.xml

   

The exception I get:

     
 
Ranch Hand
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It says in the error log:

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.prh.tracking.dao.iface.UserDAOIface' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations:
{@org.springframework.beans.factory.annotation.Autowired(required=true), @org.springframework.beans.factory.annotation.Qualifier(value=userDAO)}
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1506)
 
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The problem might be because of the qualifier names.
 
Al Hobbs
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Also you didn't post the code for UserDAOIface.  Does that even exist?
 
Paul Herrerias
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This is the code:



And why would the qualifier names be the issue?
 
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You require the injected UserDAOIface to have name userDAO, but you never give the actual bean that name. That's why the autowiring fails. There are two solutions:
1) Remove the @Qualifier annotation.
2) Specify the name in the @Repository annotation.
 
Paul Herrerias
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I use the Qualifier name because I autowire UserDAOIface twice and therefore I get this:



And I do not know how to specify the name in the @Repository annotation.
 
Al Hobbs
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You don't need to even use qualifier unless you have more than one bean of the same type.
 
Paul Herrerias
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Al Hobbs wrote:You don't need to even use qualifier unless you have more than one bean of the same type.



I know, and I autowire 2 beans of the same type UserDAOIface that's why I am using Qualifier besides I already tried to remove them and I showed what I get.
 
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Paul,

Here is a series of steps that will fix your problem:

1. Use a better naming convention; ie, stick to camel-case.  Rename your interfaces to: UserDao, UserService.
2. Even though you are autowiring UserDao twice, you still use the singleton instance created by the Spring container.
3. Remove @Qualifier annotation; it is not needed.
4. Remove line 41 from db-config.xml, since Component scanning will create this bean anyway.
5. In Web.xml remove lines 38-41.  You've already created a ContextLoaderListener in lines 20-23
 
Paul Herrerias
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Tim Nachreiner wrote:Paul,

Here is a series of steps that will fix your problem:

1. Use a better naming convention; ie, stick to camel-case.  Rename your interfaces to: UserDao, UserService.
2. Even though you are autowiring UserDao twice, you still use the singleton instance created by the Spring container.
3. Remove @Qualifier annotation; it is not needed.
4. Remove line 41 from db-config.xml, since Component scanning will create this bean anyway.
5. In Web.xml remove lines 38-41.  You've already created a ContextLoaderListener in lines 20-23



This worked but now I am getting a whole different error, if this can be replied here please, help me if not, I will create a new topic, I must say this is the first time I am working with Hibernate therefore there are some concepts I miss:


 
Tim Nachreiner
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I'm guessing it's something in the UserController.
Line 11 looks suspicious; it doesn't return anything.
Try this:
comment out line 11
change line 12 to model.addAttribute("user", userService.getUser(authentication.getPrincipal.getName()));
 
Tim Nachreiner
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I forgot the braces on the getPrincipal function.....

model.addAttribute("user", userService.getUser(authentication.getPrincipal().getName()));
 
Tim Nachreiner
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Here's a better solution:

 
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