eclipse - java.lang.IllegalArgumentException: Invalid <url-pattern> WelcomeServlet in servlet mapping -

this question has answer here:

• java.lang.illegalargumentexception: invalid <url-pattern> in servlet mapping 2 answers

i have installed tomcat server work dynamic web project on eclipse luna. server seems running fine when dont load project file when load project gives error "server tomcat v7.0 server @ localhost failed start." have checked project , there seems no error in it. these server startup messages get:

caused by: java.lang.illegalargumentexception: invalid <url-pattern> welcomeservlet in servlet mapping     @ org.apache.catalina.core.standardcontext.addservletmapping(standardcontext.java:3325)     @ org.apache.catalina.core.standardcontext.addservletmapping(standardcontext.java:3300)     @ org.apache.catalina.deploy.webxml.configurecontext(webxml.java:1438)     @ org.apache.catalina.startup.contextconfig.webconfig(contextconfig.java:1357)     @ org.apache.catalina.startup.contextconfig.configurestart(contextconfig.java:889)     @ org.apache.catalina.startup.contextconfig.lifecycleevent(contextconfig.java:386)     @ org.apache.catalina.util.lifecyclesupport.firelifecycleevent(lifecyclesupport.java:117)     @ org.apache.catalina.util.lifecyclebase.firelifecycleevent(lifecyclebase.java:90)     @ org.apache.catalina.core.standardcontext.startinternal(standardcontext.java:5419)     @ org.apache.catalina.util.lifecyclebase.start(lifecyclebase.java:150)     ... 6 more 

you used incorrect syntax url pattern of welcomeservlet. make <url-pattern>/welcomeservlet</url-pattern>. added / before name of servlet.