Erro ao executar Servlet

Front-end
#1

Estou tentando executar esse Servlet de teste:

[code]import javax.servlet.;
import javax.servlet.http.;
import java.io.*;

public class WelcomeServlet extends HttpServlet {
// process “get” requests from clients
public void doGet( HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException {
response.setContentType( “text/html” );
PrintWriter out = response.getWriter();
// start XHTML document
out.println( “<?xml version = \"1.0\"?>” );
out.printf( “%s%s%s” , “\n” );
out.println( "<html xmlns = "http://www.w3.org/1999/xhtml">" );
// head section of document
out.println( “” );
out.println( “A Simple Servlet Example” );
out.println( “” );
// body section of document
out.println( “” );
out.println( “

Welcome to Servlets!

” );
out.println( “” );
// end XHTML document
out.println( “” );
out.close(); // close stream to complete the page
} // end method doGet
WelcomeServlet() { 
}

} // end class WelcomeServlet[/code]

mas o tomcat está retornando isso:

[code]type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Error instantiating servlet class WelcomeServlet
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:535)
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:790)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:709)
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:572)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:644)
java.lang.Thread.run(Thread.java:595)

root cause

java.lang.IllegalAccessException: Class org.apache.catalina.core.StandardWrapper can not access a member of class WelcomeServlet with modifiers “”
sun.reflect.Reflection.ensureMemberAccess(Reflection.java:65)
java.lang.Class.newInstance0(Class.java:344)
java.lang.Class.newInstance(Class.java:303)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:535)
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:790)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:709)
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:572)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:644)
java.lang.Thread.run(Thread.java:595)
[/code]

Segue o arquivo web.xml:

[code]<?xml version="1.0" encoding="ISO-8859-1"?>

Welcome to Tomcat Welcome to Tomcat 
<servlet>
    <servlet-name>WelcomeServlet</servlet-name>
    <servlet-class>WelcomeServlet</servlet-class>
</servlet>

<servlet-mapping>
    <servlet-name>WelcomeServlet</servlet-name>
    <url-pattern>/welcome</url-pattern>
 </servlet-mapping>
[/code]

a URI é: http://localhost:8080/central/welcome

Se alguém souber algo, eu agradeço.

#2

neste trecho do código

 out.println( "<h1>Welcome to Servlets!</h1>" );
         out.println( "</body>" );
         // end XHTML document
         out.println( "</html>" );
         out.close();  // close stream to complete the page
 	} // end method doGet
 	WelcomeServlet() {
 		
 	}
 } // end class WelcomeServlet

retire isso:

WelcomeServlet() {
 		
 	}

Assim funciona :slight_smile:

#3

Funcionou. Valew d+

#4