java - HTTP status 404 error from Tomcat -
i'm new servlet i'm testing first servlet program giving http status 404 error. things have done are:
1> installed java-> c:\program files\java\jdk1.6.0
2> installed tomcat-> c:\apache-tomcat-7.0
3> when type -> localhost:8080 in browser works fine.
4> directory folder created-> c:\apache-tomcat-7.0.23\webapps\examples.
it contains web.xml file , web-inf folder.
inside web-inf, there folder named classes, contains validate.class
the souce code java file 'validate.java' given below-
import javax.servlet.http.*; import javax.servlet.*; import java.io.*; import java.lang.*; public class validate extends httpservlet{ public void service(httpservletrequest req,httpservletresponse res) throws servletexception,ioexception{ string name=req.getparameter("tb"); string pass=req.getparameter("pass"); string name1=getinitparameter("usrnme1"); string pass1=getinitparameter("pswrd1"); cookie c1=new cookie(name1,pass1); res.addcookie(c1); string name2=getinitparameter("usrnme2"); string pass2=getinitparameter("pswrd2"); cookie c2=new cookie(name2,pass2); res.addcookie(c2); string name3=getinitparameter("usrnme3"); string pass3=getinitparameter("pswrd3"); cookie c3=new cookie(name3,pass3); res.addcookie(c3); string name4=getinitparameter("usrnme4"); string pass4=getinitparameter("pswrd4"); cookie c4=new cookie(name4,pass4); res.addcookie(c4); res.setcontenttype("text/html"); printwriter out=res.getwriter(); cookie[] c=req.getcookies(); if(c!=null) { for(int i=0;i<c.length;i++) { if(c[i].getname()==name && c[i].getvalue()==pass) { out.println("<html><body><center>"); out.println("hello"+"<b>c[i].getname()</b>"); out.println("</center></body></html>"); break; } else { out.println("<html><body><center>"); out.println("not valid user"); out.println("</center></body></html>"); break; } } } } } web.xml file code-
<?xml version="1.0"?> <web-app> <servlet> <servlet-name>validate</servlet-name> <servlet-class>validate</servlet-class> </servlet> <init-param> <param-name>usrnme1</param-name> <param-value>user1</param-value> </init-param> <init-param> <param-name>pswrd1</param-name> <param-value>pwd1</param-value> </init-param> <init-param> <param-name>usrnme2</param-name> <param-value>user2</param-value> </init-param> <init-param> <param-name>pswrd2</param-name> <param-value>pwd2</param-value> </init-param> <init-param> <param-name>usrnme3</param-name> <param-value>user3</param-value> </init-param> <init-param> <param-name>pswrd3</param-name> <param-value>pwd3</param-value> </init-param> <init-param> <param-name>usrnme4</param-name> <param-value>user4</param-value> </init-param> <init-param> <param-name>pswrd4</param-name> <param-value>pwds4</param-value> </init-param> <servlet-mapping> <servlet-name>validate></servlet-name> <url-pattern>/validate</url-pattern> </servlet-mapping> </web-app> after reading few suggestions tried changing url /validate.htm (or .html) still same error message.
http status 404 - /examples/validate.html type status report message /examples/validate.html description requested resource (/examples/validate.html) not available. apache tomcat/7.0.27 ****************************************************** log file catalina.2015-04-22 is- apr 22, 2015 9:08:18 pm org.apache.catalina.core.aprlifecyclelistener init info: apr based apache tomcat native library allows optimal performance in production environments not found on java.library.path: c:\program files (x86)\apache software foundation\tomcat 7.0\bin;.;c:\windows\sun\java\bin;c:\windows\system32;c:\windows;c:\programdata\ oracle\java\javapath;c:\windows\system32;c:\windows;c:\windows\system32\wbem;c:\ windows\system32\windowspowershell\v1.0\;c:\program files (x86)\java\jdk1.8.0_31\bin;c:\program files (x86)\java\jre1.8.0_31\bin;c:\turboc++\disk\turboc3\bin;c:\program files (x86)\skype\phone\;c:\program files (x86)\java\jdk1.6.0_25\bin;c:\program files (x86)\java\jre6\bin;c:\program files (x86)\apache software foundation\tomcat 7.0\lib; apr 22, 2015 9:08:18 pm org.apache.coyote.abstractprotocol init info: initializing protocolhandler ["http-bio-8080"] apr 22, 2015 9:08:18 pm org.apache.coyote.abstractprotocol init info: initializing protocolhandler ["ajp-bio-8009"] apr 22, 2015 9:08:18 pm org.apache.catalina.startup.catalina load info: initialization processed in 495 ms apr 22, 2015 9:08:19 pm org.apache.catalina.core.standardservice startinternal info: starting service catalina apr 22, 2015 9:08:19 pm org.apache.catalina.core.standardengine startinternal info: starting servlet engine: apache tomcat/7.0.27 apr 22, 2015 9:08:19 pm org.apache.catalina.startup.hostconfig deploydirectory info: deploying web application directory c:\program files (x86)\apache software foundation\tomcat 7.0\webapps\docs apr 22, 2015 9:08:19 pm org.apache.catalina.startup.hostconfig deploydirectory info: deploying web application directory c:\program files (x86)\apache software foundation\tomcat 7.0\webapps\examples apr 22, 2015 9:08:19 pm org.apache.catalina.startup.hostconfig deploydirectory info: deploying web application directory c:\program files (x86)\apache software foundation\tomcat 7.0\webapps\host-manager apr 22, 2015 9:08:19 pm org.apache.catalina.startup.hostconfig deploydirectory info: deploying web application directory c:\program files (x86)\apache software foundation\tomcat 7.0\webapps\manager apr 22, 2015 9:08:19 pm org.apache.catalina.startup.hostconfig deploydirectory info: deploying web application directory c:\program files (x86)\apache software foundation\tomcat 7.0\webapps\root apr 22, 2015 9:08:19 pm org.apache.coyote.abstractprotocol start info: starting protocolhandler ["http-bio-8080"] apr 22, 2015 9:08:19 pm org.apache.coyote.abstractprotocol start info: starting protocolhandler ["ajp-bio-8009"] apr 22, 2015 9:08:19 pm org.apache.catalina.startup.catalina start info: server startup in 785 ms apr 22, 2015 9:12:20 pm org.apache.catalina.startup.hostconfig checkresources info: reloading context [/examples] apr 22, 2015 9:12:24 pm org.apache.catalina.startup.hostconfig checkresources warning: error during context [/examples] restart org.apache.catalina.lifecycleexception: failed start component [standardengine[catalina].standardhost[localhost].standardcontext[/examples]] @ org.apache.catalina.util.lifecyclebase.start(lifecyclebase.java:154) @ org.apache.catalina.startup.hostconfig.checkresources(hostconfig.java:1366) @ org.apache.catalina.startup.hostconfig.check(hostconfig.java:1454) @ org.apache.catalina.startup.hostconfig.lifecycleevent(hostconfig.java:295) @ org.apache.catalina.util.lifecyclesupport.firelifecycleevent(lifecyclesupport.java:119) @ org.apache.catalina.util.lifecyclebase.firelifecycleevent(lifecyclebase.java:90) @ org.apache.catalina.core.containerbase.backgroundprocess(containerbase.java:1379) @ org.apache.catalina.core.containerbase$containerbackgroundprocessor.processchild ren(containerbase.java:1537) @ org.apache.catalina.core.containerbase$containerbackgroundprocessor.processchild ren(containerbase.java:1547) @ org.apache.catalina.core.containerbase$containerbackgroundprocessor.run(containe rbase.java:1526) @ java.lang.thread.run(unknown source) caused by: java.lang.illegalargumentexception: servlet mapping specifies unknown servlet name hai> @ org.apache.catalina.core.standardcontext.addservletmapping(standardcontext.java: 3204) @ org.apache.catalina.core.standardcontext.addservletmapping(standardcontext.java: 3183) @ org.apache.catalina.deploy.webxml.configurecontext(webxml.java:1302) @ org.apache.catalina.startup.contextconfig.webconfig(contextconfig.java:1294) @ org.apache.catalina.startup.contextconfig.configurestart(contextconfig.java:855) @ org.apache.catalina.startup.contextconfig.lifecycleevent(contextconfig.java:345) @ org.apache.catalina.util.lifecyclesupport.firelifecycleevent(lifecyclesupport.ja va:119) @ org.apache.catalina.util.lifecyclebase.firelifecycleevent(lifecyclebase.java:90) @ org.apache.catalina.core.standardcontext.startinternal(standardcontext.java:5161 ) @ org.apache.catalina.util.lifecyclebase.start(lifecyclebase.java:150) ... 10 more apr 22, 2015 9:37:00 pm org.apache.catalina.startup.hostconfig checkresources info: reloading context [/examples] apr 22, 2015 9:37:04 pm org.apache.catalina.startup.hostconfig checkresources warning: error during context [/examples] restart org.apache.catalina.lifecycleexception: failed start component [standardengine[catalina].standardhost[localhost].standardcontext[/examples]] @ org.apache.catalina.util.lifecyclebase.start(lifecyclebase.java:154) @ org.apache.catalina.startup.hostconfig.checkresources(hostconfig.java:1366) @ org.apache.catalina.startup.hostconfig.check(hostconfig.java:1454) @ org.apache.catalina.startup.hostconfig.lifecycleevent(hostconfig.java:295) @ org.apache.catalina.util.lifecyclesupport.firelifecycleevent(lifecyclesupport.java:119) @ org.apache.catalina.util.lifecyclebase.firelifecycleevent(lifecyclebase.java:90) @ org.apache.catalina.core.containerbase.backgroundprocess(containerbase.java:1379) @ org.apache.catalina.core.containerbase$containerbackgroundprocessor.processchildren(containerbase.java:1537) @ org.apache.catalina.core.containerbase$containerbackgroundprocessor.processchildren(containerbase.java:1547) @ org.apache.catalina.core.containerbase$containerbackgroundprocessor.run(containerbase.java:1526) @ java.lang.thread.run(unknown source) caused by: java.lang.illegalargumentexception: servlet mapping specifies unknown servlet name validate> @ org.apache.catalina.core.standardcontext.addservletmapping(standardcontext.java:3204) @ org.apache.catalina.core.standardcontext.addservletmapping(standardcontext.java: 3183) @ org.apache.catalina.deploy.webxml.configurecontext(webxml.java:1302) @ org.apache.catalina.startup.contextconfig.webconfig(contextconfig.java:1294) @ org.apache.catalina.startup.contextconfig.configurestart(contextconfig.java:855) @ org.apache.catalina.startup.contextconfig.lifecycleevent(contextconfig.java:345) @ org.apache.catalina.util.lifecyclesupport.firelifecycleevent(lifecyclesupport.java:119) @ org.apache.catalina.util.lifecyclebase.firelifecycleevent(lifecyclebase.java:90) @ org.apache.catalina.core.standardcontext.startinternal(standardcontext.java:5161) @ org.apache.catalina.util.lifecyclebase.start(lifecyclebase.java:150) ... 10 more please me out possible. i'll thankful you.
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