Question

我是JUnit的新手，我为Service（业务层）和数据库层（Hibernate Layer）编写了测试用例。当我为支持bean写作时，我遇到了一个我无法解决的错误。看看附加的片段，帮助我摆脱这种挫败感。我觉得我没有从服务（业务）层获取数据。但是在我的Bean中我可以打印列表，因为在Junit测试用例中我得到NULL。

RepricingBeanTest.java

中的

方法

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={
"file:src/main/resources/config/spring/beans/HibernateSessionFactory.xml",
    "file:src/main/resources/config/spring/beans/DataSourceTest.xml",
"file:src/main/resources/com/dynaprice/customer/spring/CustomerBean.xml"})
public class RepricingBeanTest {

RepricingBean beanrep = new RepricingBean();

@BeforeClass
public static void initialise() {

}
@Test
public void testGetRepricingRules() {
    int iSize = beanrep.getRepricingRules().size();
    assertNotNull(iSize);
}

Repricingbean.java

中的

方法

public List<Repricing> getRepricingRules(){
    return repricingBoimpl.getRepricingRules();
}

RepricingBoimpl.java

中的

方法

@Override
public List<Repricing> getRepricingRules() {
    return repricingDaoimpl.getRepricingRules();
}

repricingDaoimpl.java

中的

方法

public List<Repricing> getRepricingRules() {
        getHibernateTemplate().find("from Rule");
        @SuppressWarnings("unchecked")
        List<Repricing>repricingdata=getHibernateTemplate().find("from Repricing");
        System.out.println(repricingdata);
        return repricingdata;
    }

我收到错误

java.lang.NullPointerException
at com.dynaprice.RepricingBean.getRepricingRules(RepricingBean.java:364)
at com.dynaprice.beans.test.RepricingBeanTest.testGetRepricingRules(RepricingBeanTest.java:65)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:82)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:240)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:180)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

Answer 1

RepricingBean beanrep = new RepricingBean();

你似乎完全在这里跳过Spring，这意味着......

return repricingBoimpl.getRepricingRules();

...可能只是没有设置repricingBoimpl（因为Spring没有机会与这个bean进行交互，所以实例实际上并不是一个Spring托管bean，只是一些随机对象）解释NPE。尝试...

@Autowired
private RepricingBean beanrep;

...在您的测试课程中。如果这不起作用，请将RepricingBean设置为repricingBoimpl的部分发布。

Junit测试用例获取空点异常并且无法从服务层检索数据

1 个答案: