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Posts Tagged ‘apache’

I’m developing a web application using Apache Tapestry, SpringFramework and Hibernate. I’m new to all these technologies.

I was having a problem accessing database because whenever I tried to use my DAO classes I got a NullPointerException. The reason was that the sessionFactory variable was null.

I searched lot’s of thread forums and they always pointed to the configuration of the application, something the I reviewed over and over again using provided examples. It took me 2 days of work to find out why this was happening. That’s the price you pay for being a newbie.

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Apache Maven
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In order to generate WTP Eclipse configuration files using Apache Maven execute the following Maven statement.

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Cannot forget that when using Maven Build Number Plugin (http://mojo.codehaus.org/buildnumber-maven-plugin/), to prevent it from failing when compiling and there are locally modified files (under development) use the -Dmaven.buildNumber.doCheck=false switch.

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