Servlet Mappings Jetty 8

Question

I have a webapp that works with Tomcat 8 and Jetty 8. Recently, we have introduced servlet-mappings

    <servlet>
        <servlet-name>page</servlet-name>
        <jsp-file>/Dashboard.html</jsp-file>
        <load-on-startup>1</load-on-startup>
    </servlet>

   <servlet-mapping>
        <servlet-name>page</servlet-name>
        <url-pattern>/editjob</url-pattern>
    </servlet-mapping>

When you put an url with "http://localhost:8080/app/editjob", in tomcat is redirected to "http://localhost:8080/app/Dashboard.html". But when we deploy it using embed Jetty, a 404 Not Found it is being returned. It seems that the servlet-mapping is not working.

HTTP ERROR 404
Problem accessing /app/page. Reason:
Not Found
Powered by Jetty://

I can enter in the app by using directly http://localhost:8080/app/Dashboard.html. Without mappings, we have no problem with jetty This is the code for embedding Jetty:

final Server server = new Server();
SocketConnector connector = new SocketConnector();
connector.setMaxIdleTime(-1);
connector.setSoLingerTime(-1);
connector.setPort(8080);
server.setConnectors(new Connector[]{connector});
final WebAppContext context = new WebAppContext();
context.setServer(server);
context.setContextPath("app");
context.setWar(location.toExternalForm());
server.setHandler(context);
context.start();  
server.join();

This is the web.xml with the mappings.

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<display-name>app</display-name>
<servlet>
    <servlet-name>ServletAdaptor</servlet-name>
    <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>

    <init-param>
        <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
        <param-value>true</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>ServletAdaptor</servlet-name>
    <url-pattern>/webresources/*</url-pattern>
</servlet-mapping>
     <servlet>
        <servlet-name>login</servlet-name>
        <jsp-file>/Login.html</jsp-file>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet>
        <servlet-name>page</servlet-name>
        <jsp-file>/Dashboard.html</jsp-file>
        <load-on-startup>1</load-on-startup>
    </servlet>
<session-config>
    <session-timeout>
        30
    </session-timeout>
</session-config>
<servlet>
    <servlet-name>context</servlet-name>
    <servlet-class>
        org.springframework.web.context.ContextLoaderServlet
    </servlet-class>
</servlet> 
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/beans.xml</param-value>
</context-param>
<filter>
    <filter-name>CORS</filter-name>
    <filter-class>com.thetransactioncompany.cors.CORSFilter</filter-class>
    <init-param>
        <param-name>cors.allowGenericHttpRequests</param-name>
        <param-value>true</param-value>
    </init-param>
    <init-param>
        <param-name>cors.allowOrigin</param-name>
        <param-value>*</param-value>
    </init-param>
    <init-param>
        <param-name>cors.allowSubdomains</param-name>
        <param-value>true</param-value>
    </init-param>
    <init-param>
        <param-name>cors.supportedMethods</param-name>
        <param-value>GET, POST, HEAD, PUT, DELETE, OPTIONS</param-value>
    </init-param>
    <init-param>
        <param-name>cors.supportedHeaders</param-name>
        <param-value>Origin, Content-Type, X-Requested-With, Access-Control-Allow-Origin</param-value>
    </init-param>
    <init-param>
        <param-name>cors.supportsCredentials</param-name>
        <param-value>false</param-value>
    </init-param>
    <init-param>
        <param-name>cors.maxAge</param-name>
        <param-value>-1</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>CORS</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

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

    <servlet-mapping>
        <servlet-name>page</servlet-name>
        <url-pattern>/home</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>page</servlet-name>
        <url-pattern>/jobs</url-pattern>
    </servlet-mapping>

   <welcome-file-list>
    <welcome-file>Index.html</welcome-file>

</welcome-file-list>
</web-app>

I have tried to define the servlet-mappings when i start the server, but did not work. This mappings are working perfectly with Tomcat, but Jetty...I dont know which could be the problem.

Thanks in advance.

Answer 1

Problem accessing /app/page.

That URL is not mapped anywhere in your pasted web.xml

The servlets with urls patterns (defined in <servlet-mapping> entries) are:

• /webresources/*
• /login
• /home
• /jobs

None of those will match on a request URL of /page, resulting in the DefaultServlet (which is default mapped at /) returning a 404 for that requested resource.

Also, you haven't setup JSP in your embedded-jetty environment, so no JSP is being used.

Copied from prior answer https://stackoverflow.com/a/28483349/775715

If that code snippet represents how you are initializing your webapp, then you are missing a lot of JSP initialization steps.

There's an example project produced by the Jetty Project showing how to use JSP with embedded Jetty at

https://github.com/jetty-project/embedded-jetty-jsp

Pay attention to ...

• The dependencies you need
• The required ClassLoader type
• The scratchDir declaration
• The ServletContainerInitializer setup
• The Jsp Servlet Holder and mappings
• The InstanceManager

(just to name a few big ones)