Why spring can't find my bean?
java, spring
Solution
It's because `@Transactional` places the bean is behind a jdk proxy implementing `UserService` interface, after that the bean is only available as `UserService` and not `DefaultUserService`. See https://stackoverflow.com/a/18875681/241986.
You can try setting the table name with a property placeholder `@Value("${someprop}")` and define that property in test context, or create another interface that will expose `setTableName()`, and autowire that helper interface into the test case.
I'm not sure there are any easy solutions of the problem, I think this task can be subsumed under the problem of bean redefinition in Spring test-context framework Spring beans redefinition in unit test environment
Problem
I created an interface and a class: ``` public interface UserService { List<User> listAll(); } @Transactional public class DefaultUserService implements UserService { private String tableName; public List<User> listAll() { someDao.listAllFromTable(tableName); } public void setTableName(String tableName) { this.tableName = tableName; } } ``` Also in my application context xml file `context.xml`, I defined: ``` <bean id="userService" class="mypackage.DefaultUserService"> <property name="tableName" value="myusers" /> </bean> ``` Then I want to test the `DefaultUserService`: ``` @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = {"classpath:context-test.xml"}) @TransactionConfiguration(transactionManager = "testTransactionManager") @Transactional public class UserServiceTest { @Autowired private DefaultUserService userService; @Before public void setup() { userService.setTableName("mytesttable"); } @Test public void test() { // test with userService; userService.listAll(); } } ``` Notice it uses `context-test.xml`, which imported the original `context.xml`: ``` <import resource="classpath:context.xml"/> ``` Unfortunately, when the test starts, spring throws exception: ``` org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mypackage.UserServiceTest': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private mypackage.DefaultUserService mypackage.userService nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [mypackage.DefaultUserService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} ``` I'm not sure where is wrong, why spring can't find the bean `DefaultUserService` I defined?