java.lang.UnsupportedClassVersionError-jdk版本
我在Eclipse中使用JDK1.7.003在Windows7平台上开发了一个API。在其他Windows 7系统上部署时,它可以正常工作 在使用jdk 1.6在Windows 8系统上部署时,出现以下异常:java.lang.UnsupportedClassVersionError-jdk版本,java,eclipse,Java,Eclipse,我在Eclipse中使用JDK1.7.003在Windows7平台上开发了一个API。在其他Windows 7系统上部署时,它可以正常工作 在使用jdk 1.6在Windows 8系统上部署时,出现以下异常: HTTP Status 500 - Servlet.init() for servlet MediaPlayer-Backend-API threw exception type Exception report message Servlet.init() for servlet M
HTTP Status 500 - Servlet.init() for servlet MediaPlayer-Backend-API threw exception
type Exception report
message Servlet.init() for servlet MediaPlayer-Backend-API threw exception
description The server encountered an internal error that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Servlet.init() for servlet MediaPlayer-Backend-API threw exception
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:931)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1822)
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
java.lang.Thread.run(Thread.java:662)
root cause
java.lang.UnsupportedClassVersionError: favorite/api/VideoManager : Unsupported major.minor version 51.0 (unable to load class favorite.api.VideoManager)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2908)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1173)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1681)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Class.java:247)
com.sun.jersey.core.reflection.ReflectionHelper$3.run(ReflectionHelper.java:284)
com.sun.jersey.core.reflection.ReflectionHelper$3.run(ReflectionHelper.java:279)
java.security.AccessController.doPrivileged(Native Method)
com.sun.jersey.spi.scanning.AnnotationScannerListener$AnnotatedClassVisitor.getClassForName(AnnotationScannerListener.java:224)
com.sun.jersey.spi.scanning.AnnotationScannerListener$AnnotatedClassVisitor.visitEnd(AnnotationScannerListener.java:188)
org.objectweb.asm.ClassReader.accept(Unknown Source)
org.objectweb.asm.ClassReader.accept(Unknown Source)
com.sun.jersey.spi.scanning.AnnotationScannerListener.onProcess(AnnotationScannerListener.java:138)
com.sun.jersey.core.spi.scanning.uri.FileSchemeScanner$1.f(FileSchemeScanner.java:86)
com.sun.jersey.core.util.Closing.f(Closing.java:71)
com.sun.jersey.core.spi.scanning.uri.FileSchemeScanner.scanDirectory(FileSchemeScanner.java:83)
com.sun.jersey.core.spi.scanning.uri.FileSchemeScanner.scan(FileSchemeScanner.java:71)
com.sun.jersey.core.spi.scanning.PackageNamesScanner.scan(PackageNamesScanner.java:226)
com.sun.jersey.core.spi.scanning.PackageNamesScanner.scan(PackageNamesScanner.java:142)
com.sun.jersey.api.core.ScanningResourceConfig.init(ScanningResourceConfig.java:80)
com.sun.jersey.api.core.PackagesResourceConfig.init(PackagesResourceConfig.java:104)
com.sun.jersey.api.core.PackagesResourceConfig.<init>(PackagesResourceConfig.java:78)
com.sun.jersey.api.core.PackagesResourceConfig.<init>(PackagesResourceConfig.java:89)
com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:696)
com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:674)
com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:205)
com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:376)
com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:559)
javax.servlet.GenericServlet.init(GenericServlet.java:160)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:931)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1822)
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
java.lang.Thread.run(Thread.java:662)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.33 logs.
Apache Tomcat/7.0.33
Servlet MediaPlayer后端API的HTTP状态500-Servlet.init()引发异常
类型异常报告
Servlet MediaPlayer后端API的消息Servlet.init()引发异常
说明服务器遇到内部错误,无法满足此请求。
例外
servlet.ServletException:servlet MediaPlayer后端API的servlet.init()引发异常
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:931)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
org.apache.tomcat.util.net.aprependpoint$SocketProcessor.run(aprependpoint.java:1822)
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
run(Thread.java:662)
根本原因
java.lang.UnsupportedClassVersionError:favorite/api/VideoManager:Unsupported major.minor版本51.0(无法加载类favorite.api.VideoManager)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2908)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1173)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1681)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
java.lang.Class.forName0(本机方法)
java.lang.Class.forName(Class.java:247)
com.sun.jersey.core.reflection.ReflectionHelper$3.run(ReflectionHelper.java:284)
com.sun.jersey.core.reflection.ReflectionHelper$3.run(ReflectionHelper.java:279)
java.security.AccessController.doPrivileged(本机方法)
com.sun.jersey.spi.scanning.AnnotationScannerListener$AnnotatedClassVisitor.getClassForName(AnnotationScannerListener.java:224)
com.sun.jersey.spi.scanning.AnnotationScannerListener$AnnotatedClassVisitor.visitEnd(AnnotationScannerListener.java:188)
org.objectweb.asm.ClassReader.accept(未知源)
org.objectweb.asm.ClassReader.accept(未知源)
com.sun.jersey.spi.scanning.AnnotationScannerListener.onProcess(AnnotationScannerListener.java:138)
com.sun.jersey.core.spi.scanning.uri.FileSchemeScanner$1.f(FileSchemeScanner.java:86)
com.sun.jersey.core.util.Closing.f(Closing.java:71)
com.sun.jersey.core.spi.scanning.uri.FileSchemeScanner.scanddirectory(FileSchemeScanner.java:83)
com.sun.jersey.core.spi.scanning.uri.FileSchemeScanner.scan(FileSchemeScanner.java:71)
com.sun.jersey.core.spi.scanning.PackageNamesScanner.scan(PackageNamesScanner.java:226)
com.sun.jersey.core.spi.scanning.PackageNamesScanner.scan(PackageNamesScanner.java:142)
com.sun.jersey.api.core.ScanningResourceConfig.init(ScanningResourceConfig.java:80)
com.sun.jersey.api.core.PackagesResourceConfig.init(PackagesResourceConfig.java:104)
com.sun.jersey.api.core.PackagesResourceConfig.(PackagesResourceConfig.java:78)
com.sun.jersey.api.core.PackagesResourceConfig.(PackagesResourceConfig.java:89)
com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:696)
com.sun.jersey.spi.container.servlet.WebComponent.createResourceConfig(WebComponent.java:674)
com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:205)
com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:376)
com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:559)
init(GenericServlet.java:160)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:931)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
org.apache.tomcat.util.net.aprependpoint$SocketProcessor.run(aprependpoint.java:1822)
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
run(Thread.java:662)
注意,根本原因的完整堆栈跟踪可在Apache Tomcat/7.0.33日志中找到。
ApacheTomcat/7.0.33
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