Java 获取内部类Spring/Hibernate的访问权限
我要做的是调用一个内部类中的方法,当我试图从其他类调用它时,问题就开始了。假设我有一个类DlgSendSAP,它有一个名为LongTask的内部类,其中我有另一个名为ActualTask的内部类,它有我想要调用的方法。这里有什么问题? 我读了很多关于Hibernate和Spring的书,我知道基本知识,但这让我发疯,我不知道这是否是IoC的问题。任何帮助都将不胜感激 类DlgSendSAPJava 获取内部类Spring/Hibernate的访问权限,java,spring,hibernate,inner-classes,Java,Spring,Hibernate,Inner Classes,我要做的是调用一个内部类中的方法,当我试图从其他类调用它时,问题就开始了。假设我有一个类DlgSendSAP,它有一个名为LongTask的内部类,其中我有另一个名为ActualTask的内部类,它有我想要调用的方法。这里有什么问题? 我读了很多关于Hibernate和Spring的书,我知道基本知识,但这让我发疯,我不知道这是否是IoC的问题。任何帮助都将不胜感激 类DlgSendSAP public class DlgSendSAP { ... dlgCargarTxt = ((Dl
public class DlgSendSAP {
...
dlgCargarTxt = ((DlgCargarTxt) SpringContext.getContext().getBean(DlgCargarTxt.class));
try {
dlgCargarTxt.ejecutarTask();
} catch (Exception ex) {
ex.printStackTrace();
}
}
类DlgCargarTxt
public class DlgCargarTxt {
private LongTask.ActualTask actualTask;
...
public void ejecutarTask() throws FileNotFoundException, IOException {
actualTask = ((LongTask.ActualTask) SpringContext.getContext().getBean(LongTask.ActualTask.class));
actualTask.executeTask();
}
class LongTask {
...
class ActualTask {
...
public void executeTask() {
...
}
}
}
}
调用内部类ActualTask中的bean时出错
org.springframework.beans.factory.NoSuchBeanDefinitionException: No unique bean of type [dunosusa.pos.view.LongTask] is defined: expected single bean but found 0:
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:271)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1083)
at dunosusa.pos.view.DlgCargarTxt.ejecutarTask(DlgCargarTxt.java:135)
at dunosusa.pos.view.admin.DlgSendSAP.escogerArchivos(DlgSendSAP.java:63)
at dunosusa.pos.view.admin.DlgSendSAP.<init>(DlgSendSAP.java:49)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:126)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:74)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:958)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:911)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:312)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:196)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:265)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1083)
at dunosusa.pos.controller.AccionController$ActionPerformed.actionPerformed(AccionController.java:392)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1223)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1264)
at java.awt.Component.processMouseEvent(Component.java:6263)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
at java.awt.Component.processEvent(Component.java:6028)
at java.awt.Container.processEvent(Container.java:2041)
at java.awt.Component.dispatchEventImpl(Component.java:4630)
at java.awt.Container.dispatchEventImpl(Container.java:2099)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4574)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
at java.awt.Container.dispatchEventImpl(Container.java:2085)
at java.awt.Window.dispatchEventImpl(Window.java:2478)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
org.springframework.beans.factory.nosuchbean定义异常:未定义类型为[dunosusa.pos.view.longstask]的唯一bean:应为单个bean,但找到0:
位于org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:271)
位于org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1083)
位于dunosusa.pos.view.DlgCargarTxt.ejecutarTask(DlgCargarTxt.java:135)
位于dunosusa.pos.view.admin.DlgSendSAP.escogerachivos(DlgSendSAP.java:63)
位于dunosusa.pos.view.admin.DlgSendSAP.(DlgSendSAP.java:49)
位于sun.reflect.NativeConstructorAccessorImpl.newInstance0(本机方法)
位于sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
在sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
位于java.lang.reflect.Constructor.newInstance(Constructor.java:513)
位于org.springframework.beans.BeanUtils.InstanceClass(BeanUtils.java:126)
位于org.springframework.beans.factory.support.SimpleInstallationStrategy.instantiate(SimpleInstallationStrategy.java:74)
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.InstanceBean(AbstractAutowireCapableBeanFactory.java:958)
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:911)
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
位于org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:312)
位于org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:196)
位于org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:265)
位于org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1083)
在dunosusa.pos.controller.AccionController$ActionPerformed.ActionPerformed(AccionController.java:392)
在javax.swing.AbstractButton.fireActionPerformed上(AbstractButton.java:1995)
位于javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
在javax.swing.DefaultButtonModel.fireActionPerformed上(DefaultButtonModel.java:387)
在javax.swing.DefaultButtonModel.setPressed中(DefaultButtonModel.java:242)
位于javax.swing.AbstractButton.doClick(AbstractButton.java:357)
位于javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1223)
位于javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1264)
位于java.awt.Component.ProcessMouseeEvent(Component.java:6263)
位于javax.swing.JComponent.ProcessMouseeEvent(JComponent.java:3267)
位于java.awt.Component.processEvent(Component.java:6028)
位于java.awt.Container.processEvent(Container.java:2041)
位于java.awt.Component.dispatchEventImpl(Component.java:4630)
位于java.awt.Container.dispatchEventImpl(Container.java:2099)
位于java.awt.Component.dispatchEvent(Component.java:4460)
位于java.awt.LightweightDispatcher.RetargetMouseeEvent(Container.java:4574)
位于java.awt.LightweightDispatcher.ProcessMouseeEvent(Container.java:4238)
位于java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
位于java.awt.Container.dispatchEventImpl(Container.java:2085)
位于java.awt.Window.dispatchEventImpl(Window.java:2478)
位于java.awt.Component.dispatchEvent(Component.java:4460)
位于java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
位于java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
位于java.awt.EventDispatchThread.PumpeEventsforFilter(EventDispatchThread.java:184)
位于java.awt.EventDispatchThread.PumpeEventsforHierarchy(EventDispatchThread.java:174)
位于java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
位于java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
在java.awt.EventDispatchThread.run处(EventDispatchThread.java:122)
通过使用SpringContext.getContext().getBean()-您正在搜索Spring的bean池以获得您要查找的类。为了使bean位于Spring的bean池中,还必须将内部类定义为bean
我看到您正在使用XML进行配置。您应该这样配置内部类:
<bean id="inner" class="innerbeans.Outer$Inner">
但是,同样,这不是很好的做法。为什么不提取类并使它们成为自己的类?首先,如果您需要一个三层类,您需要重新考虑项目的体系结构。这不是很好的做法。其次,请给出bean配置的xml。我发现您没有在bean配置中使用注释——为什么不呢?问题是我不能创建新类,至少没有新类来分离模块,因为这会影响许多模块,所以重新构建整个庞大的项目将是一个问题。我很抱歉对春天和冬眠一无所知,但我