HTTP Status 404 - Not Found

Question

filter

import java.io.IOException;  
import java.io.PrintWriter;  

import javax.servlet.*;  

public class MyFilter implements Filter{  

@Override
public void init(FilterConfig arg0) throws ServletException {}  

@Override
public void doFilter(ServletRequest req, ServletResponse resp,  
    FilterChain chain) throws IOException, ServletException {  

    PrintWriter out=resp.getWriter();  
    out.print("filter is invoked before");  

    chain.doFilter(req, resp);//sends request to next resource  

    out.print("filter is invoked after");  
    }  
    public void destroy() {}  
}

servlet

import java.io.IOException;  
import java.io.PrintWriter;  

import javax.servlet.ServletException;  
import javax.servlet.http.*;  

public class HelloServlet extends HttpServlet {  
    @Override
    public void doGet(HttpServletRequest request, HttpServletResponse response)  
            throws ServletException, IOException {  

        response.setContentType("text/html");  
        PrintWriter out = response.getWriter();  

        out.print("<br>welcome to servlet<br>");  

    }  

}

web.xml

<web-app>  

<servlet>  
 <servlet-name>HelloServlet</servlet-name>  
 <servlet-class>HelloServlet</servlet-class>  
</servlet>  

<servlet-mapping>  
 <servlet-name>HelloServlet</servlet-name>  
 <url-pattern>/HelloServlet</url-pattern>  
</servlet-mapping>  

<filter>  
 <filter-name>MyFilter</filter-name>  
 <filter-class>MyFilter</filter-class>  
</filter>  

<filter-mapping>  
 <filter-name>MyFilter</filter-name>  
 <url-pattern>/servlet1</url-pattern>  
</filter-mapping>  


</web-app>

index.html

     <a href="servlet1">click here</a>

error is :

HTTP Status 404 - Not Found

type Status report

messageNot Found

descriptionThe requested resource is not available. GlassFish Server Open Source Edition 4.0

I have given entire code plz help me find my error in am new to sevlet question may sound dumb but plz help me

score 0 · Answer 1 · answered Dec 22 '15 at 12:19

HTTP Status 404 - Not Found

because your servlet is mapped to /HelloServlet and your filter is trying to intercept servlet1 . since there is no servlet at servlet1 , container says no resource found.

change your filter mapping to /HelloServlet and <a href="/HelloServlet">click here</a>.

score 0 · Answer 2 · answered Dec 22 '15 at 12:26

0

Try to change this:

   <a href="/servlet1">click here</a>

With:

  <a href="/HelloServlet">click here</a>

answered Dec 22 '15 at 12:26

Abdelhak

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filter mapping is changed to /* and click here – Eiman Sadath Assadi Dec 22 '15 at 17:40
Why the apostrophes? – Abdelhak Dec 22 '15 at 17:42
sorry click here – Eiman Sadath Assadi Dec 22 '15 at 17:54
i got output with above mentioned corrections thank u – Eiman Sadath Assadi Dec 22 '15 at 18:24
it's working or not? – Abdelhak Dec 22 '15 at 18:25
yes it working it fine – Eiman Sadath Assadi Feb 20 '16 at 16:18

HTTP Status 404 - Not Found

2 Answers2