Exception in thread ""http-bio-80"-exec-1" java.lang.OutOfMemoryError: PermGen space
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at org.eclipse.jdt.internal.compiler.ast.TypeReference.internalResolveType(TypeReference.java:113)
at org.eclipse.jdt.internal.compiler.ast.TypeReference.resolveType(TypeReference.java:207)
at org.eclipse.jdt.internal.compiler.ast.TypeReference.resolveSuperType(TypeReference.java:185)
at org.eclipse.jdt.internal.compiler.lookup.ClassScope.findSupertype(ClassScope.java:1194)
at org.eclipse.jdt.internal.compiler.lookup.ClassScope.connectSuperclass(ClassScope.java:888)
at org.eclipse.jdt.internal.compiler.lookup.ClassScope.connectTypeHierarchy(ClassScope.java:1031)
at org.eclipse.jdt.internal.compiler.lookup.CompilationUnitScope.connectTypeHierarchy(CompilationUnitScope.java:299)
at org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.completeTypeBindings(LookupEnvironment.java:191)
at org.eclipse.jdt.internal.compiler.Compiler.internalBeginToCompile(Compiler.java:735)
at org.eclipse.jdt.internal.compiler.Compiler.beginToCompile(Compiler.java:377)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:422)
at org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:447)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:374)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:352)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:339)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:594)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:344)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
------解决方案--------------------
错误信息提示，加载了太多的class。。
解决办法：
http://www.blogjava.net/GEF/archive/2009/03/28/262560.html