我试图在实现类（Service）的抽象类中设置受保护属性的属性。我在实现类中使用@Autowired注释并使用了setter注释。我正在用Groovy对此进行编码，如果需要的话，它在后台实现getter和setter。当我尝试运行此代码时，会创建一条错误消息，指示发生了StackOverFlow错误：
""2019-04-02 19:53:57 [restartedMain] ERROR o.s.boot.SpringApplication - Application startup failed
"org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:139)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:124)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
at org.springframework.boot.SpringApplication$run.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:128)
at gov.epa.esml.WarInitializerApplication.main(WarInitializerApplication.groovy:30)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
Caused by: org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.initialize(TomcatEmbeddedServletContainer.java:138)
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.<init>(TomcatEmbeddedServletContainer.java:87)
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getTomcatEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:554)
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:179)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:166)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:136)
... 15 common frames omitted
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'sessionVariableFilter': Unsatisfied dependency expressed through field 'myEmsService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'myEmsService': Injection of autowired dependencies failed; nested exception is java.lang.StackOverflowError
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:586)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:364)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1269)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:551)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:481)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.boot.web.servlet.ServletContextInitializerBeans.getOrderedBeansOfType(ServletContextInitializerBeans.java:234)
at org.springframework.boot.web.servlet.ServletContextInitializerBeans.addAsRegistrationBean(ServletContextInitializerBeans.java:182)
at org.springframework.boot.web.servlet.ServletContextInitializerBeans.addAsRegistrationBean(ServletContextInitializerBeans.java:177)
at org.springframework.boot.web.servlet.ServletContextInitializerBeans.addAdaptableBeans(ServletContextInitializerBeans.java:159)
at org.springframework.boot.web.servlet.ServletContextInitializerBeans.<init>(ServletContextInitializerBeans.java:80)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.getServletContextInitializerBeans(EmbeddedWebApplicationContext.java:252)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.selfInitialize(EmbeddedWebApplicationContext.java:225)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.access$000(EmbeddedWebApplicationContext.java:90)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext$1.onStartup(EmbeddedWebApplicationContext.java:215)
at org.springframework.boot.context.embedded.tomcat.TomcatStarter.onStartup(TomcatStarter.java:55)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5267)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1423)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1413)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'myEmsService': Injection of autowired dependencies failed; nested exception is java.lang.StackOverflowError
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:370)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1269)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:551)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:481)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:208)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1136)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1064)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:583)
... 27 common frames omitted
Caused by: java.lang.StackOverflowError: null
at java.lang.Exception.<init>(Exception.java:102)
at java.lang.ReflectiveOperationException.<init>(ReflectiveOperationException.java:89)
at java.lang.reflect.InvocationTargetException.<init>(InvocationTargetException.java:72)
at sun.reflect.GeneratedMethodAccessor71.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:2726)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:3785)
at gov.epa.esml.table.ARichTableService.setProperty(ARichTableService.groovy)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.setGroovyObjectProperty(ScriptBytecodeAdapter.java:545)
at gov.epa.esml.myEms.service.MyEmsService.setConverter(MyEmsService.groovy:38)
at sun.reflect.GeneratedMethodAccessor71.invoke(Unknown Source)
....
@Service("myEmsService")
class MyEmsService extends ARichTableService implements IMyEmsService {
@Autowired
EmRepository emRepository
@Autowired
void setDataService(IMyEmsDAO dataService) {
this.dataService = dataService
}
@Autowired
@Qualifier("emFieldsRenderer")
void setConverter(AClassFieldsRenderer converter) {
this.converter = converter
}
@Override
TableData getTableData(HttpServletRequest request, Collection<ColumnHeader> headers,
Integer offset, Integer pageSize, Collection<ADataFilter> filters,
Collection<ColSort> orderBy) throws Exception {
Collection<Object> data
try {
data = dataService.getTableData(headers, offset, pageSize, filters, orderBy);
Collection<Object> ems = new ArrayList<Object>()
for (Object d : data) {
ems.add(d)
}
data = ems
} //This happens when subqueries returns empty sets.
catch (SQLGrammarException e) {
data = new ArrayList<Object>()
}
TableData formatedData = new TableData()
formatedData.setHeaders((ArrayList<ColumnHeader>) headers)
for (Object o : data) {
Object d = converter.convert(o, headers)
formatedData.addData((ArrayList<String>) d)
}
return formatedData
}
List<Em> getRelatedIds(Integer myId) {
emRepository.findByParentId(myId)
}
}
abstract class ARichTableService implements IRichTableService {
protected AClassFieldsRenderer converter
protected IRichTableDAO dataService
@Override
TableData getTableData(HttpServletRequest request, Collection<ColumnHeader> headers,
Integer offset, Integer pageSize, Collection<ADataFilter> filters,
Collection<ColSort> orderBy) throws Exception {
Collection<Object> data = null
try {
data = dataService.getTableData(headers, offset, pageSize, filters, orderBy)
}
//This happens when subqueries returns empty sets.
catch (SQLGrammarException e) {
data = new ArrayList<Object>()
}
TableData formatedData = new TableData()
formatedData.headers = (ArrayList<ColumnHeader>) headers
for (Object o : data) {
Object d = converter.convert(o, headers)
formatedData.addData((ArrayList<String>) d)
}
return formatedData
}
Long getTotalRows(Collection<ADataFilter> filters, Integer pageSize) throws Exception {
return (dataService.getTotalRows(filters))
}
}
interface IMyEmsService extends IRichTableService {
List<Em> getRelatedIds(Integer myId)
}
我不确定代码的哪一部分正在创建该代码，或者是否可以这种格式进行注入？
答案 0 :(得分：2)
this.converter =很可能试图在幕后致电this.setConverter。理想的方法是转向构造函数注入（这也消除了对@Autowired的需求），但作为立即解决方案，请尝试使用direct field access代替：
@Autowired
void setConverter(AClassFieldsRenderer converter) {
this.@converter = converter
}