Question

我的项目结构是下面的屏幕截图。实际上，虽然文件存在但我找不到文件错误，我将在下面添加错误。我是Intellej的新手，这是我的第一个项目，我试图通过使用mysql连接到数据库来建立音乐商店。我的applicaiton-context.xml在下面，dispatcher和web.xml是正确的。

application-context.xml

project structure

我的日志文件是

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1095)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)

引起：java.io.FileNotFoundException：类路径资源[com / emusicstore / Dao / ProductDao.class]无法打开，因为它不存在在org.springframework.core.io.ClassPathResource.getInputStream（ClassPathResource.java:172）在org.springframework.core.type.classreading.SimpleMetadataReader。（SimpleMetadataReader.java:50）在org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader（SimpleMetadataReaderFactory.java:98）在org.springframework.core.type.classreading.CachingMetadataReaderFactory.getMetadataReader（CachingMetadataReaderFactory.java:102）在org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader（SimpleMetadataReaderFactory.java:93）在org.springframework.context.annotation.ConfigurationClassParser.asSourceClass（ConfigurationClassParser.java:621）在org.springframework.context.annotation.ConfigurationClassParser $ SourceClass.getInterfaces（ConfigurationClassParser.java:797）在org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass（ConfigurationClassParser.java:298）在org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass（ConfigurationClassParser.java:232）在org.springframework.context.annotation.ConfigurationClassParser.parse（ConfigurationClassParser.java:199）在org.springframework.context.annotation.ConfigurationClassParser.parse（ConfigurationClassParser.java:168） ......还有32个

2016年3月18日10：37：15.310严重[http-nio-8080-exec-1] org.apache.catalina.core.StandardWrapperValve.invoke为servlet调度程序分配异常 java.io.FileNotFoundException：类路径资源[com / emusicstore / Dao / ProductDao.class]无法打开，因为它不存在在org.springframework.core.io.ClassPathResource.getInputStream（ClassPathResource.java:172）在org.springframework.core.type.classreading.SimpleMetadataReader。（SimpleMetadataReader.java:50）在org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader（SimpleMetadataReaderFactory.java:98）在org.springframework.core.type.classreading.CachingMetadataReaderFactory.getMetadataReader（CachingMetadataReaderFactory.java:102）在org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader（SimpleMetadataReaderFactory.java:93）在org.springframework.context.annotation.ConfigurationClassParser.asSourceClass（ConfigurationClassParser.java:621）在org.springframework.context.annotation.ConfigurationClassParser $ SourceClass.getInterfaces（ConfigurationClassParser.java:797）在org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass（ConfigurationClassParser.java:298）在org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass（ConfigurationClassParser.java:232）在org.springframework.context.annotation.ConfigurationClassParser.parse（ConfigurationClassParser.java:199）在org.springframework.context.annotation.ConfigurationClassParser.parse（ConfigurationClassParser.java:168）在org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions（ConfigurationClassPostProcessor.java:321）在org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry（ConfigurationClassPostProcessor.java:243）在org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors（PostProcessorRegistrationDelegate.java:273）在org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors（PostProcessorRegistrationDelegate.java:98）在org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors（AbstractApplicationContext.java:678）在org.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:520）在org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext（FrameworkServlet.java:667）在org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext（FrameworkServlet.java:633）在org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext（FrameworkServlet.java:681）在org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext（FrameworkServlet.java:552）在org.springframework.web.servlet.FrameworkServlet.initServletBean（FrameworkServlet.java:493）在org.springframework.web.servlet.HttpServletBean.init（HttpServletBean.java:136）在javax.servlet.GenericServlet.init（GenericServlet.java:158）在org.apache.catalina.core.StandardWrapper.initServlet（StandardWrapper.java:1238）在org.apache.catalina.core.StandardWrapper.loadServlet（StandardWrapper.java:1151）在org.apache.catalina.core.StandardWrapper.allocate（StandardWrapper.java:828）在org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:135）在org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:106）在org.apache.catalina.authenticator.AuthenticatorBase.invoke（AuthenticatorBase.java:502） at org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:141） at org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:79）在org.apache.catalina.valves.AbstractAccessLogValve.invoke（AbstractAccessLogValve.java:616）在org.apache.catalina.core.StandardEngineValve.invoke（StandardEngineValve.java:88）在org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:522）在org.apache.coyote.http11.AbstractHttp11Processor.process（AbstractHttp11Processor.java:1095） at org.apache.coyote.AbstractProtocol $ AbstractConnectionHandler.process（AbstractProtocol.java:672）在org.apache.tomcat.util.net.NioEndpoint $ SocketProcessor.doRun（NioEndpoint.java:1500）在org.apache.tomcat.util.net.NioEndpoint $ SocketProcessor.run（NioEndpoint.java:1456）在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1142） at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:617） at org.apache.tomcat.util.threads.TaskThread $ WrappingRunnable.run（TaskThread.java:61）在java.lang.Thread.run（Thread.java:745）

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1095)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)

引起：java.io.FileNotFoundException：类路径资源[com / emusicstore / Dao / ProductDao.class]无法打开，因为它不存在在org.springframework.core.io.ClassPathResource.getInputStream（ClassPathResource.java:172）在org.springframework.core.type.classreading.SimpleMetadataReader。（SimpleMetadataReader.java:50）在org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader（SimpleMetadataReaderFactory.java:98）在org.springframework.core.type.classreading.CachingMetadataReaderFactory.getMetadataReader（CachingMetadataReaderFactory.java:102）在org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader（SimpleMetadataReaderFactory.java:93）在org.springframework.context.annotation.ConfigurationClassParser.asSourceClass（ConfigurationClassParser.java:621）在org.springframework.context.annotation.ConfigurationClassParser $ SourceClass.getInterfaces（ConfigurationClassParser.java:797）在org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass（ConfigurationClassParser.java:298）在org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass（ConfigurationClassParser.java:232）在org.springframework.context.annotation.ConfigurationClassParser.parse（ConfigurationClassParser.java:199）在org.springframework.context.annotation.ConfigurationClassParser.parse（ConfigurationClassParser.java:168） ......还有32个

2016年3月18日10：37：16.340 SEVERE [http-nio-8080-exec-3] org.apache.catalina.core.StandardWrapperValve.invoke为servlet调度程序分配异常 java.io.FileNotFoundException：类路径资源[com / emusicstore / Dao / ProductDao.class]无法打开，因为它不存在在org.springframework.core.io.ClassPathResource.getInputStream（ClassPathResource.java:172）在org.springframework.core.type.classreading.SimpleMetadataReader。（SimpleMetadataReader.java:50）在org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader（SimpleMetadataReaderFactory.java:98）在org.springframework.core.type.classreading.CachingMetadataReaderFactory.getMetadataReader（CachingMetadataReaderFactory.java:102）在org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader（SimpleMetadataReaderFactory.java:93）在org.springframework.context.annotation.ConfigurationClassParser.asSourceClass（ConfigurationClassParser.java:621）在org.springframework.context.annotation.ConfigurationClassParser $ SourceClass.getInterfaces（ConfigurationClassParser.java:797）在org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass（ConfigurationClassParser.java:298）在org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass（ConfigurationClassParser.java:232）在org.springframework.context.annotation.ConfigurationClassParser.parse（ConfigurationClassParser.java:199）在org.springframework.context.annotation.ConfigurationClassParser.parse（ConfigurationClassParser.java:168）在org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions（ConfigurationClassPostProcessor.java:321）在org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry（ConfigurationClassPostProcessor.java:243）在org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors（PostProcessorRegistrationDelegate.java:273）在org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors（PostProcessorRegistrationDelegate.java:98）在org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors（AbstractApplicationContext.java:678）在org.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:520）在org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext（FrameworkServlet.java:667）在org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext（FrameworkServlet.java:633）在org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext（FrameworkServlet.java:681）在org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext（FrameworkServlet.java:552）在org.springframework.web.servlet.FrameworkServlet.initServletBean（FrameworkServlet.java:493）在org.springframework.web.servlet.HttpServletBean.init（HttpServletBean.java:136）在javax.servlet.GenericServlet.init（GenericServlet.java:158）在org.apache.catalina.core.StandardWrapper.initServlet（StandardWrapper.java:1238）在org.apache.catalina.core.StandardWrapper.loadServlet（StandardWrapper.java:1151）在org.apache.catalina.core.StandardWrapper.allocate（StandardWrapper.java:828）在org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:135）在org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:106）在org.apache.catalina.authenticator.AuthenticatorBase.invoke（AuthenticatorBase.java:502） at org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:141） at org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:79）在org.apache.catalina.valves.AbstractAccessLogValve.invoke（AbstractAccessLogValve.java:616）在org.apache.catalina.core.StandardEngineValve.invoke（StandardEngineValve.java:88）在org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:522）在org.apache.coyote.http11.AbstractHttp11Processor.process（AbstractHttp11Processor.java:1095） at org.apache.coyote.AbstractProtocol $ AbstractConnectionHandler.process（AbstractProtocol.java:672）在org.apache.tomcat.util.net.NioEndpoint $ SocketProcessor.doRun（NioEndpoint.java:1500）在org.apache.tomcat.util.net.NioEndpoint $ SocketProcessor.run（NioEndpoint.java:1456）在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1142） at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:617） at org.apache.tomcat.util.threads.TaskThread $ WrappingRunnable.run（TaskThread.java:61）在java.lang.Thread.run（Thread.java:745）

Answer 1

检查目标文件夹并查看ProductDao.class是否存在于那里，如果不是它没有编译它，我认为你有时在Intellij中使用Intellij，目标文件夹自动被排除右键单击目标文件夹并选择取消排除。并确保该类存在于dao包下，并且该类的名称相同。还请检查bean是否配置正确。

我看到您的Target文件夹已被排除，因为它是RED，因此请尝试取消应该有效的排除项，如果没有请说明ProductDao如何配置为bean。

Java.io.FileNotFoundException：无法打开类路径资源[../ProductDao.class]，因为它不存在

1 个答案: