Spring config null constructor-arg

SqlSessionTemplate has also a constructor that takes an ExecutorType as an argument. Note that this configuration style only needs to be used if the desired execution method differs from the default set for the SqlSessionFactory.

The caveat to this form is that there cannot be an existing transaction running with a different ExecutorType when this method is called. Either ensure that calls to SqlSessionTemplate s with different executor types run in a separate transaction e.

Here a sample to load application context in "common" standalone Java application:. And here another example using an application context inside a JUnit System Test:. We can load bean definitions is from files which located in: the class path the local file system an environment-relative resource path. And it's also possible to load from multiple files. Now, we partition above configuration into separated files: spring-tx-config. From the example above, we can import resources from another XML using import resource.

Previously, we have test configuration that only importing to spring-config. ApplicationContext implementations have default resource loading rules. Liked this Tutorial?

Share it on Social media! Let us move on to the Accounting service. Notice here that we did not need to add the Autowired annotation on neither the constructor nor the field. As we perform constructor injection, we do not need to add the Autowired annotation on the field. Since we use Spring 5. Let us see how this all comes together in the Java configuration class:.

Let us discuss the two declarations. The first declaration starts up our CalculationService bean. In the bean declaration, we simply use the default constructor to start up the bean.

The second declaration uses the constructor we defined in the AccountingServiceBean. Let us test our Spring configuration in a simple test class. If our configuration is correct, we should get the result of the addition of two numbers. In order to import our Java configuration, we should declare it using the Import annotation in our test class. Since we annotated our test with the SpringBootTest annotation, our test will attempt to start a full application context, with the configuration classes that are imported using the Import annotation.

Here, we imported the AccountingSpringConfig class that we just defined. When we run the test, we will get the following log statements:.