Eclipse 是否可以创建myown接口(带有实现)来扩展neo4j GraphRespository?
我正在尝试创建一个扩展GraphRespository的接口。看来这是不可能的。问题是当我运行冒烟测试时,需要CustomerGraphRepositoryImpl的默认构造函数。有人能帮忙吗?谢谢接口如下:Eclipse 是否可以创建myown接口(带有实现)来扩展neo4j GraphRespository?,eclipse,spring,maven,neo4j,Eclipse,Spring,Maven,Neo4j,我正在尝试创建一个扩展GraphRespository的接口。看来这是不可能的。问题是当我运行冒烟测试时,需要CustomerGraphRepositoryImpl的默认构造函数。有人能帮忙吗?谢谢接口如下: @NoRepositoryBean public interface CustomerGraphRepository<T> extends GraphRepository<T> { public T findNode(Lon
@NoRepositoryBean
public interface CustomerGraphRepository<T> extends GraphRepository<T> {
public T findNode(Long id);
}
实施:
@Repository
public class CustomerGraphRepositoryImpl<T> extends NodeGraphRepositoryImpl<T> implements CustomerGraphRepository<T>{
public CustomerGraphRepositoryImpl(Class<T> clazz, Neo4jTemplate template) {
super(clazz, template);
// TODO Auto-generated constructor stub
}
@Override
public T findNode(Long id) {
try {
return createEntity(getById(id));
} catch (DataRetrievalFailureException e) {
return null;
}
}
protected T createEntity(Node node){
try{
return template.createEntityFromStoredType(node, null);
}
catch(ClassCastException e){
return null;
}
}
}
故障跟踪如下所示:
java.lang.IllegalStateException: Failed to load ApplicationContext
at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContext(CacheAwareContextLoaderDelegate.java:99)
at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:122)
at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:105)
at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:74)
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:312)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:211)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:288)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:284)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:88)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
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:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'customGraphRepositoryImpl' defined in file [pratice/dao/util/CustomGraphRepositoryImpl.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [pratice.dao.util.CustomGraphRepositoryImpl]: No default constructor found; nested exception is java.lang.NoSuchMethodException: pratice.dao.util.CustomGraphRepositoryImpl.<init>()
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1007)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:953)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:487)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:626)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:120)
at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:60)
at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:100)
at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:248)
at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContextInternal(CacheAwareContextLoaderDelegate.java:64)
at org.springframework.test.context.CacheAwareContextLoaderDelegate.loadContext(CacheAwareContextLoaderDelegate.java:91)
... 25 more
Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [pratice.dao.util.CustomGraphRepositoryImpl]: No default constructor found; nested exception is java.lang.NoSuchMethodException: pratice.dao.util.CustomGraphRepositoryImpl.<init>()
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:83)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1000)
... 41 more
Caused by: java.lang.NoSuchMethodException: pratice.dao.util.CustomGraphRepositoryImpl.<init>()
at java.lang.Class.getConstructor0(Class.java:2800)
at java.lang.Class.getDeclaredConstructor(Class.java:2043)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:78)
... 42 more
那么,到底是什么问题?你没有告诉我们哪里出了问题或者哪里出了问题。不要给我们错误的描述。如果您有错误文本,请将其复制到问题中。想想你需要什么来调试这个问题,对于编译器来说,仅仅给出一个简单的英语oops是多么无用,这就打破了。