用junit测试获取spring bean 报No Scope registered for scope 'session'错

spring 配置如下

<bean name="i18nManager" class="com.thams.service.I18nManager" scope="session">
<property name="messageSource" ref="messageSource" />
</bean>

测试类

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"file:WebRoot/WEB-INF/spring/*.xml"})
@TestExecutionListeners({
WebContextTestExecutionListener.class,
DependencyInjectionTestExecutionListener.class,
DirtiesContextTestExecutionListener.class })
public class testi18n {

@Autowired
private I18nManager i18nManager;

@Test
public void test01(){
i18nManager.setLocale(Locale.ENGLISH);
System.out.println(i18nManager.getMessage("title"));;
}
}

注意:需要在测试类头中加入

@TestExecutionListeners({
WebContextTestExecutionListener.class,
DependencyInjectionTestExecutionListener.class,
DirtiesContextTestExecutionListener.class })

 是关键. 

其中的WebContextTestExecutionListener类需要在类路径中自行创建

import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.config.Scope;
import org.springframework.context.support.GenericApplicationContext;
import org.springframework.context.support.SimpleThreadScope;
import org.springframework.test.context.TestContext;
import org.springframework.test.context.support.AbstractTestExecutionListener;

public class WebContextTestExecutionListener extends AbstractTestExecutionListener {
@Override
public void prepareTestInstance(TestContext testContext) throws Exception {

if (testContext.getApplicationContext() instanceof GenericApplicationContext) {
GenericApplicationContext context = (GenericApplicationContext) testContext.getApplicationContext();
ConfigurableListableBeanFactory beanFactory = context.getBeanFactory();
Scope requestScope = new SimpleThreadScope();
beanFactory.registerScope("request", requestScope);
Scope sessionScope = new SimpleThreadScope();
beanFactory.registerScope("session", sessionScope);
}
}
}

ok .这样就可以使用junit 测试 scope 为request 或者 session的bean了

 =========================================================================

如果你没有使用spring-test框架

而是通过 XmlWebApplicationContext   ClassPathXmlApplicationContext  来获取上下文的话.

可以参考下面:

 将下面代码加入到你的获取上下文中

MockHttpServletRequest request = new MockHttpServletRequest();
MockHttpSession session = new MockHttpSession();
request.setSession(session);
RequestContextHolder.setRequestAttributes(new ServletRequestAttributes(request));

会提示少jar.

把spring-mock.jar 加入即可