Re: stupid tomcat/eclipse question
The error clearly indicates that servlet-api.jar is missing from the classpath. It should be located under CATALINA_HOME\lib in case of TC 6. You would think so but it's not the case. NoClassDefFoundErrors are seldom so clear. They do a nice job of hiding the root cause. In this case it was two copies of some totally unrelated class needed by a servlet that caused the error. I posted on the solution yesterday, [EMAIL PROTECTED] wrote: The error clearly indicates that servlet-api.jar is missing from the classpath. It should be located under CATALINA_HOME\lib in case of TC 6. -Original Message- From: Steve Cohen [EMAIL PROTECTED] To: Tomcat Users List users@tomcat.apache.org Sent: Mon, 8 Sep 2008 11:03 pm Subject: stupid tomcat/eclipse question I've had a stable development environment running Tomcat 6.0 within Eclipse 3.3. I did something stupid to configuration and now I can't get away from this error as soon as the server starts. java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java :39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorI mpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) Caused by: java.lang.NoClassDefFoundError: javax/servlet/Servlet at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:620) ... In spite of trying putting everything I can think of onto the runtime classpath I can't make this go away. Where is Tomcat supposed to find javax/servlet/Servlet and why was this so easy before and so difficult now. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] You are invited to Get a Free AOL Email ID. - http://webmail.aol.in - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
stupid tomcat/eclipse question
I've had a stable development environment running Tomcat 6.0 within Eclipse 3.3. I did something stupid to configuration and now I can't get away from this error as soon as the server starts. java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) Caused by: java.lang.NoClassDefFoundError: javax/servlet/Servlet at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:620) ... In spite of trying putting everything I can think of onto the runtime classpath I can't make this go away. Where is Tomcat supposed to find javax/servlet/Servlet and why was this so easy before and so difficult now. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: stupid tomcat/eclipse question
-Original Message- From: Steve Cohen [mailto:[EMAIL PROTECTED] Sent: Monday, September 08, 2008 1:34 PM To: Tomcat Users List Subject: stupid tomcat/eclipse question I've had a stable development environment running Tomcat 6.0 within Eclipse 3.3. I did something stupid to configuration and now I can't get away from this error as soon as the server starts. java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.ja va:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccesso rImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) Caused by: java.lang.NoClassDefFoundError: javax/servlet/Servlet at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:620) ... In spite of trying putting everything I can think of onto the runtime classpath I can't make this go away. The Tomcat batch files deliberately ignore the CLASSPATH environment variable because failing to do so greatly increases the odds of Tomcat not starting. Modifying the runtime classpath in Eclipse is going to have the same effect on your odds of Tomcat starting for the exact same reason. Tomcat 6.0.x only needs bootstrap.jar on the classpath. Some additional jars get added automatically by Java per the Class-Path attribute in the MANIFEST.MF found in bootstrap.jar. With this set of jars, the bootstrap process will use the common.loader property value found in the conf/catalina.properties file to create the common classloader which will contain the javax.servlet classes among many others required by the Tomcat server. Not knowing what your original Tomcat configuration was, it's hard to guess what the original change was that caused Tomcat not to start. Modifying the runtime classpath can easily result in this same symptom. You might try creating a new Tomcat server from the same Tomcat runtime in Eclipse and see if it will start. If not, it suggests you have done something to your Tomcat installation. Cheers, Larry Where is Tomcat supposed to find javax/servlet/Servlet and why was this so easy before and so difficult now. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: stupid tomcat/eclipse question
Thanks! Turned out that the problem was I had put some application jars (which were duplicated in WEB-INF/lib) on the runtime classpath. Your post got me to thinking that maybe these weren't necessary. Not only weren't they necessary but removing them made the problem go away. Addition by subtraction. D'oh! Larry Isaacs wrote: -Original Message- From: Steve Cohen [mailto:[EMAIL PROTECTED] Sent: Monday, September 08, 2008 1:34 PM To: Tomcat Users List Subject: stupid tomcat/eclipse question I've had a stable development environment running Tomcat 6.0 within Eclipse 3.3. I did something stupid to configuration and now I can't get away from this error as soon as the server starts. java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.ja va:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccesso rImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) Caused by: java.lang.NoClassDefFoundError: javax/servlet/Servlet at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:620) ... In spite of trying putting everything I can think of onto the runtime classpath I can't make this go away. The Tomcat batch files deliberately ignore the CLASSPATH environment variable because failing to do so greatly increases the odds of Tomcat not starting. Modifying the runtime classpath in Eclipse is going to have the same effect on your odds of Tomcat starting for the exact same reason. Tomcat 6.0.x only needs bootstrap.jar on the classpath. Some additional jars get added automatically by Java per the Class-Path attribute in the MANIFEST.MF found in bootstrap.jar. With this set of jars, the bootstrap process will use the common.loader property value found in the conf/catalina.properties file to create the common classloader which will contain the javax.servlet classes among many others required by the Tomcat server. Not knowing what your original Tomcat configuration was, it's hard to guess what the original change was that caused Tomcat not to start. Modifying the runtime classpath can easily result in this same symptom. You might try creating a new Tomcat server from the same Tomcat runtime in Eclipse and see if it will start. If not, it suggests you have done something to your Tomcat installation. Cheers, Larry Where is Tomcat supposed to find javax/servlet/Servlet and why was this so easy before and so difficult now. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: stupid tomcat/eclipse question
The error clearly indicates that servlet-api.jar is missing from the classpath. It should be located under CATALINA_HOME\lib in case of TC 6. -Original Message- From: Steve Cohen [EMAIL PROTECTED] To: Tomcat Users List users@tomcat.apache.org Sent: Mon, 8 Sep 2008 11:03 pm Subject: stupid tomcat/eclipse question I've had a stable development environment running Tomcat 6.0 within Eclipse 3.3. I did something stupid to configuration and now I can't get away from this error as soon as the server starts. java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java :39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorI mpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) Caused by: java.lang.NoClassDefFoundError: javax/servlet/Servlet at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:620) ... In spite of trying putting everything I can think of onto the runtime classpath I can't make this go away. Where is Tomcat supposed to find javax/servlet/Servlet and why was this so easy before and so difficult now. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] You are invited to Get a Free AOL Email ID. - http://webmail.aol.in - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
