Stacktrace sau đây là những gì tôi nhận được khi tôi cố gắng truy cập một servlet, mà dường như chạy tốt từ người quản lý Tomcat.Servlet: SEVERE: Phân bổ ngoại lệ cho servlet
11 Sep, 2012 11:50:12 AM org.apache.catalina.core.ApplicationContext log
INFO: Marking servlet LoginServlet as unavailable
11 Sep, 2012 11:50:12 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Allocate exception for servlet LoginServlet
java.lang.Error: Unresolved compilation problems:
The import javax.servlet cannot be resolved
The import javax.servlet cannot be resolved
The import javax.servlet cannot be resolved
The import javax.servlet cannot be resolved
The import javax.servlet cannot be resolved
The import javax.servlet cannot be resolved
HttpServlet cannot be resolved to a type
ServletConfig cannot be resolved to a type
ServletException cannot be resolved to a type
HttpServlet cannot be resolved to a type
ServletContext cannot be resolved to a type
ServletException cannot be resolved to a type
HttpServletRequest cannot be resolved to a type
HttpServletResponse cannot be resolved to a type
ServletException cannot be resolved to a type
request cannot be resolved
The method getLoggedin() from the type LoginHandler refers to the missing type ServletException
The method destroy() of type LoginManager must override or implement a supertype method
HttpServlet cannot be resolved to a type
at com.login.servlets.LoginManager.<init>(LoginManager.java:5)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1149)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:827)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:129)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:877)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:594)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1675)
at java.lang.Thread.run(Unknown Source)
11 Sep, 2012 12:05:12 PM org.apache.catalina.core.ApplicationContext log
INFO: Marking servlet Log4JInitServlet as unavailable
11 Sep, 2012 12:05:12 PM org.apache.catalina.core.StandardContext loadOnStartup
SEVERE: Servlet /logintest threw load() exception
java.lang.Error: Unresolved compilation problems:
The import javax.servlet cannot be resolved
The import javax.servlet cannot be resolved
The import javax.servlet cannot be resolved
The import javax.servlet cannot be resolved
The import org.apache cannot be resolved
The import org.apache cannot be resolved
HttpServlet cannot be resolved to a type
ServletConfig cannot be resolved to a type
ServletException cannot be resolved to a type
ServletContext cannot be resolved to a type
BasicConfigurator cannot be resolved
PropertyConfigurator cannot be resolved
BasicConfigurator cannot be resolved
at com.logger.WebLogger.<init>(WebLogger.java:5)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1149)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1026)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4421)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4734)
at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3461)
at org.apache.catalina.manager.ManagerServlet.reload(ManagerServlet.java:943)
at org.apache.catalina.manager.HTMLManagerServlet.reload(HTMLManagerServlet.java:557)
at org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java:121)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.filters.CsrfPreventionFilter.doFilter(CsrfPreventionFilter.java:186)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:563)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:877)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:594)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1675)
at java.lang.Thread.run(Unknown Source)
Tất cả các lọ được sử dụng bên trong đường dẫn eclipse đều có trong thư mục lib Tomcat. Các webapp là nhận được triển khai với ra bất kỳ bản ghi lỗi, nhưng khi tôi cố gắng truy cập vào một servlet, ngoại lệ này xảy ra, và tôi nhận được nó đăng nhập vào các bản ghi tomcat. Bất cứ ai có thể giúp đỡ với điều này?
The package names are proper inside 'classes', also, the web.xml is proper.
Tôi không biết tại sao điều này xảy ra. Có một số ứng dụng web khác, hầu như sử dụng cùng một libs chạy tốt. Mong đợi một số ai có thể giúp tôi với điều này ..
Cảm ơn
Liệu nó xảy ra khi chạy trong Eclipse hoặc trong một Tomcat độc lập? – Tarlog
Kiểm tra http://stackoverflow.com/questions/4076601/how-do-i-import-the-javax-servlet-api-in-my-eclipse-project –