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NullPointerException when using Mapper
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Javier Domingo  
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 More options Apr 23 2012, 7:00 am
From: Javier Domingo <javier...@gmail.com>
Date: Mon, 23 Apr 2012 13:00:25 +0200
Local: Mon, Apr 23 2012 7:00 am
Subject: NullPointerException when using Mapper
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Hi,

I have been doing a webapp (a CRUD interface for a db) and I am using as
guideline the jpetstore, with the exception that:

   1. I am also using the mybatis-generator's code.
   2. Services. I don't want to have services as a separate part. I want to
   use the Mappers directly on the Action bean
   3. I have all mappers.xml, mappers.java, example.java and entities.java
   (all the generator's code) in one folder (org.lmb97.data)

And I am encountering a NullPointerException when I try to use a mapper. I
checked all I could, but still not getting to the solution. I don't know
which is the problem. Everything has been said... but no idea. I think it
is something with the configuration. I have checked various bugs in the bug
tracker that seemed to be related but none was.

I am attaching apache tomcat's log and the normal log. log4j is configured
in ALL. And the repo is here[1], I am putting the exact commit, so that if
I work with the repo, you can see the actual state.

The netbeans project is configured so that if you clone it, you have all
libraries included with it, with no external dependencies.

I will be waiting for your reply, and don't hesitate mailing me to ask for
more data,

Sincerely,

Javier Domingo

[1]:
https://github.com/txomon/Universidad/tree/eb7753e32a2eccbf4e5e81e815...

  mybatis-mail.7z
30K Download

 
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Javier Domingo  
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 More options Apr 22 2012, 7:37 pm
From: Javier Domingo <javier...@gmail.com>
Date: Mon, 23 Apr 2012 01:37:12 +0200
Local: Sun, Apr 22 2012 7:37 pm
Subject: NullPointerException when using Mapper
Print | Individual message | Show original | Report this message | Find messages by this author

Hi,

I have been doing a webapp (a CRUD interface for a db) and I am using as
guideline the jpetstore, with the exception that:

   1. I am also using the mybatis-generator's code.
   2. Services. I don't want to have services as a separate part. I want to
   use the Mappers directly on the Action bean
   3. I have all mappers.xml, mappers.java, example.java and entities.java
   (all the generator's code) in one folder (org.lmb97.data)

And I am encountering a NullPointerException when I try to use a mapper. I
checked all I could, but still not getting to the solution. I don't know
which is the problem. Everything has been said... but no idea. I think it
is something with the configuration. I have checked various bugs in the bug
tracker that seemed to be related but none was.

I am attaching apache tomcat's log and the normal log. log4j is configured
in ALL. And the repo is here[1], I am putting the exact commit, so that if
I work with the repo, you can see the actual state.

The netbeans project is configured so that if you clone it, you have all
libraries included with it, with no external dependencies.

I will be waiting for your reply, and don't hesitate mailing me to ask for
more data,

Sincerely,

Javier Domingo

[1]:
https://github.com/txomon/Universidad/tree/eb7753e32a2eccbf4e5e81e815...

  mybatis-mail.7z
30K Download

 
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Eduardo Macarron  
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 More options Apr 23 2012, 11:45 am
From: Eduardo Macarron <eduardo.macar...@gmail.com>
Date: Mon, 23 Apr 2012 17:45:01 +0200
Local: Mon, Apr 23 2012 11:45 am
Subject: Re: NullPointerException when using Mapper
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Hola Javier,

basePackage property is a package name, so this:
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="org.lmb97.data.*Mapper" />
 </bean>

should be:
 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="org.lmb97.data" />
 </bean>


 
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Javier Domingo  
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 More options Apr 23 2012, 5:50 pm
From: Javier Domingo <javier...@gmail.com>
Date: Mon, 23 Apr 2012 23:50:18 +0200
Local: Mon, Apr 23 2012 5:50 pm
Subject: Re: NullPointerException when using Mapper
Print | Individual message | Show original | Report this message | Find messages by this author

Hola, gracias!

Yes that was a problem, but the one that was giving problems was that
@Autowire is used in Spring managed ones, for Stripes ones, I have to use
@SpringBean. Doing both solved the problems.

The related StackOverflow question is this:

http://stackoverflow.com/questions/10280004/nullpointerexception-usin...

I didn't have any real mybatis problems still :D

Cheers
El 23/04/2012 17:45, "Eduardo Macarron" <eduardo.macar...@gmail.com>
escribió:


 
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