0
完全存档： google drive新泽西宁静异常1
（Tomcat的7.0）
本地测试URL - http://localhost:8080/test/algebra/sum?a=1&b=2
，并得到：
HTTP Status 500 - Resource configuration class edu.algebra could not be loaded.
type Exception report
message Resource configuration class edu.algebra could not be loaded.
description The server encountered an internal error that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Resource configuration class edu.algebra could not be loaded.
org.glassfish.jersey.servlet.WebComponent.createResourceConfig(WebComponent.java:466)
org.glassfish.jersey.servlet.WebComponent.<init>(WebComponent.java:302)
org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:168)
org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:358)
javax.servlet.GenericServlet.init(GenericServlet.java:158)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:748)
root cause
**java.lang.ClassNotFoundException: edu.algebra**
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Class.java:264)
org.glassfish.jersey.internal.util.ReflectionHelper$7.run(ReflectionHelper.java:407)
org.glassfish.jersey.internal.util.ReflectionHelper$7.run(ReflectionHelper.java:397)
java.security.AccessController.doPrivileged(Native Method)
org.glassfish.jersey.servlet.WebComponent.createResourceConfig(WebComponent.java:454)
org.glassfish.jersey.servlet.WebComponent.<init>(WebComponent.java:302)
org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:168)
org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:358)
javax.servlet.GenericServlet.init(GenericServlet.java:158)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:748)
note注意Apache Tomcat/7.0.56日志中提供了根本原因的完整堆栈跟踪。
为什么？