I have compiled the servlet code. I used Java Web Server 2.0 which learning a little bit of servlet. I followed the following steps to execute the porgram: 1. Place the byte code(.class) file in the web server, eg d:\javawedserver2.0\servlets\HelloServlet.class 2. Run the web server ie execute d:\javawebserver2.0\bin\httpd.exe 3. Open the Web Browser and enter the URL "http://localhost:8080/servlet/HelloServlet" Now how can I run the servlet using Jakarta Tomcat 4.0 Beta 6. Thanks in advance. Gautam. ------------------
[This message has been edited by Gautam Sathe (edited July 25, 2001).]
After configuring tomcat, put your servlets(class file) in webapps\WEB-INF\classes directory. Follow the template for the servlets already defined in web.xml to add a new one. Restart the engine and check the servlet in the browser. http://localhost:8080/servlet/HelloWorldServlet Regards Beksy
Gautam Sathe
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Joined: May 24, 2001
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Hello Beksy, Thanks for your help. I could not get the directory webapps\WEB-INF\classes. I have jakarta-tomcat-4.0 Beta6 version of Tomcat. My server is starting up ok, but it shows file not found error when I save the file in this (C:\jakarta-tomcat-4.0-b6\webapps\examples\WEB-INF\classes) dirctory. What do you mean by: Follow the template for the servlets already defined in web.xml to add a new one. Gautam.
Originally posted by Beksy Kurian: After configuring tomcat, put your servlets(class file) in webapps\WEB-INF\classes directory. Follow the template for the servlets already defined in web.xml to add a new one. Restart the engine and check the servlet in the browser. http://localhost:8080/servlet/HelloWorldServlet Regards Beksy
I missed the second question... The following is from the tomcat docs "* In order to define a name and init params for the newly installed servlet you need to also: register the servlet with a <servlet> element in the WEBAPP/WEB-INF/web.xml file you can optionally map your servlet to uri requests relative to the context within it is located by adding a <servlet-mapping> element in the WEBAPP/WEB-INF/web.xml file "
<b> I m also new in servlets, I got these Exceptions</b>
A Servlet Exception Has Occurred Exception Report: javax.servlet.ServletException: Cannot allocate servlet instance for path /examples/servlet/hello at org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:406) at org.apache.catalina.servlets.InvokerServlet.doGet(InvokerServlet.java:180) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193) at filters.ExampleFilter.doFilter(ExampleFilter.java:149) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193) at filters.ExampleFilter.doFilter(ExampleFilter.java:149) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:219) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564) at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2251) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:446) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:163) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:984) at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1074) at java.lang.Thread.run(Thread.java:579) Root Cause: java.lang.IllegalAccessException: Class org.apache.catalina.core.StandardWrapper can not access a member of class hello with modifiers "" at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:50) at java.lang.Class.newInstance0(Class.java:284) at java.lang.Class.newInstance(Class.java:249) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:825) at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:602) at org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:387) at org.apache.catalina.servlets.InvokerServlet.doGet(InvokerServlet.java:180) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193) at filters.ExampleFilter.doFilter(ExampleFilter.java:149) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193) at filters.ExampleFilter.doFilter(ExampleFilter.java:149) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:219) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564) at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2251) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:446) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:163) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:984) at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1074) at java.lang.Thread.run(Thread.java:579)
Take a look at the Java one presentation on my web site. www.samjdalton.com I presented a Bids of a Feather session of web application deplyment which had a full discussion of this topic. Please drop me a line if this is useful Rgds Sam
<a href="http://www.samjdalton.com" target="_blank" rel="nofollow">Sam Dalton</a>,<br />Co-author of [http://www.amazon.com/exec/obidos/tg/detail/-/1590592255/qid=1068633302//ref=sr_8_xs_ap_i0_xgl14/104-4904002-9274339?v=glance&s=books&n=507846]Professional JSP 2.0[/URL] (October 2003)<br />Co-author of <a href="http://www.amazon.com/exec/obidos/ASIN/1861007701/ref=ase_electricporkchop" target="_blank" rel="nofollow">Professional SCWCD Certification</a><br />Co-author of <a href="http://www.amazon.com/exec/obidos/ASIN/186100561X/ref=ase_electricporkchop" target="_blank" rel="nofollow">Professional Java Servlets 2.3</a>
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