If I do not have web.xml in the aforementioned project
and I have a java class annotated with @WebServlet and also decorated with
urlPattern={"/index.html"}
I am getting a 500 Errors with localhost:8080/
The java class as servlet is published in browser with the url
localhost:8080/index.html
Is there anyway to get this java class as servlet to be picked up
because I feel the servlet should be registered with the servlet container
and should return
on localhost:8080/ same as src/mainwebapp/index.html
src/mainwebapp/index.jsp files.
@WebServlet(name="indexServlet", urlPatterns={"/index.html"})
public class IndexServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse
response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out=response.getWriter();
out.print("<html><body>");
out.print("<h3>Hello Index Servlet</h3>");
out.print("</body></html>");
}
}
HTTP ERROR 500 java.lang.ClassCastException: class [Ljava.lang.Object;
cannot be cast to class [Ljava.lang.String; ([Ljava.lang.Object; and
[Ljava.lang.String; are in module java.base of loader 'bootstrap')
URI: /
STATUS: 500
MESSAGE: java.lang.ClassCastException: class [Ljava.lang.Object; cannot be
cast to class [Ljava.lang.String; ([Ljava.lang.Object; and
[Ljava.lang.String; are in module java.base of loader 'bootstrap')
SERVLET: default
CAUSED BY: java.lang.ClassCastException: class [Ljava.lang.Object; cannot
be cast to class [Ljava.lang.String; ([Ljava.lang.Object; and
[Ljava.lang.String; are in module java.base of loader 'bootstrap')Caused by:
java.lang.ClassCastException: class [Ljava.lang.Object; cannot be cast
to class [Ljava.lang.String; ([Ljava.lang.Object; and
[Ljava.lang.String; are in module java.base of loader 'bootstrap')
at
org.eclipse.jetty.util.resource.ResourceCollection.list(ResourceCollection.java:426)
at
org.eclipse.jetty.util.resource.Resource.getListHTML(Resource.java:479)
at
Regards
<http://www.backbutton.co.uk/>
On Thu, 25 Mar 2021, 01:23 Jan Bartel, <[email protected]> wrote:
> You do not need to add the welcome files clause to your web.xml. Jetty has
> a default web.xml file that sets up jsp for you.
>
> I think the issue is that your web.xml file is not targetted at jetty-11,
> which uses the jakarta.* namespace as Olivier pointed out in a previous
> post.
>
> Jan
>
> On Thu, 25 Mar 2021 at 11:57, Som Lima <[email protected]> wrote:
>
>> Sorry you are right. I got confused.
>> There is a main class which came with the archetype. That works when I
>> ran as java application in eclipse IDE with my hack. I think the main class
>> is
>> invoked for unit tests.
>>
>> So I just ran mvn exec:java I got an error because I don't have a main
>> class declared in the pom.xml. I have no issue with the error.
>>
>> I am running the archetype as
>> mvn jetty:run
>>
>> I tried adding welcome-file tags ( see below) in the existing archetype
>> 's web.xml for index.html to be picked up but I am getting a 404.
>>
>> <?xml version="1.0" encoding="UTF-8"?>
>> <web-app version="3.0" 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_3_0.xsd";>
>> <servlet>
>> <servlet-name>Jersey Web Application</servlet-name>
>> <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-
>> class>
>> <init-param>
>> <param-name>jersey.config.server.provider.packages</param-name>
>> <param-value>com.example</param-value>
>> </init-param>
>> <load-on-startup>1</load-on-startup>
>> </servlet>
>> <servlet-mapping>
>> <servlet-name>Jersey Web Application</servlet-name>
>> <url-pattern>/*</url-pattern>
>> </servlet-mapping>
>>
>> <welcome-file-list>
>> <welcome-file>index.html</welcome-file>
>> </welcome-file-list>
>> </web-app>
>>
>> On Thu, 25 Mar 2021, 00:15 Jan Bartel, <[email protected]> wrote:
>>
>>> Now I'm confused. You say you're using mvn jetty:run BUT you have posted
>>> a java main class where you are configuring and running jetty in embedded
>>> mode. Which is it?
>>>
>>> Using mvn jetty:run will run jetty inside maven, and deploy the webapp
>>> that is your maven project. It does not run your main class.
>>>
>>> Alternatively, you can write a main class to startup up jetty and deploy
>>> your webapp. You then need to ensure that all of the required jetty jars
>>> and other dependencies are on the execution classpath. You'd need to use
>>> something like the maven exec plugin to run it, or run it manually at the
>>> command line in the usual java fashion.
>>>
>>> On Thu, 25 Mar 2021 at 10:46, Som Lima <[email protected]> wrote:
>>>
>>>> I used this archetype.
>>>>
>>>> mvn archetype:generate -DarchetypeArtifactId=jersey-heroku-webapp \
>>>> -DarchetypeGroupId=org.glassfish.jersey.archetypes
>>>> -DinteractiveMode=false \
>>>> -DgroupId=com.example
>>>> -DartifactId=simple-heroku-webapp -Dpackage=com.example \
>>>> -DarchetypeVersion=3.0.1
>>>>
>>>>
>>>>
>>>> running as mvn jetty:run
>>>>
>>>>
>>>> I made this hack by adding a new class
>>>> HelloHandler and commenting out the line server.setHandler(root)
>>>> , which has worked so far but it is just a hack in the existing Main
>>>> class. I was hoping I can just an index.html but seems to be too good to be
>>>> true. I guess I will have to rework the existing Main class.
>>>>
>>>> // server.setHandler(root);
>>>> server.setHandler(new HelloHandler());
>>>>
>>>> public class HelloHandler extends AbstractHandler
>>>> {
>>>> public void handle(String target,Request
>>>> baseRequest,HttpServletRequest request,HttpServletResponse response)
>>>> throws IOException, ServletException
>>>> {
>>>> response.setContentType("text/html;charset=utf-8");
>>>> response.setStatus(HttpServletResponse.SC_OK);
>>>> baseRequest.setHandled(true);
>>>> response.getWriter().println("<h1>Hello World</h1>");
>>>> }
>>>> }
>>>>
>>>>
>>>> public class Main {
>>>>
>>>> public static void main(String[] args) throws Exception{
>>>> // The port that we should run on can be set into an
>>>> environment variable
>>>> // Look for that variable and default to 8080 if it isn't there.
>>>> String webPort = System.getenv("PORT");
>>>> if (webPort == null || webPort.isEmpty()) {
>>>> webPort = "8080";
>>>> }
>>>>
>>>> final Server server = new Server(Integer.valueOf(webPort));
>>>>
>>>> final WebAppContext root = new WebAppContext();
>>>>
>>>> root.setContextPath("/");
>>>> // Parent loader priority is a class loader setting that Jetty
>>>> accepts.
>>>> // By default Jetty will behave like most web containers in
>>>> that it will
>>>> // allow your application to replace non-server libraries that
>>>> are part of the
>>>> // container. Setting parent loader priority to true changes
>>>> this behaviour.
>>>> // Read more here:
>>>> http://wiki.eclipse.org/Jetty/Reference/Jetty_Classloading
>>>> root.setParentLoaderPriority(true);
>>>>
>>>> final String webappDirLocation = "src/main/webapp/";
>>>> root.setDescriptor(webappDirLocation + "/WEB-INF/web.xml");
>>>> root.setResourceBase(webappDirLocation);
>>>>
>>>> // server.setHandler(root);
>>>> server.setHandler(new HelloHandler());
>>>> server.start();
>>>> server.join();
>>>> }
>>>> }
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Wed, 24 Mar 2021, 23:13 Jan Bartel, <[email protected]> wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>> How are you running jetty? Are you running in the
>>>>> distribution/embedded/maven plugin? Do you have jsp and it's dependencies
>>>>> enabled?
>>>>>
>>>>> Making a very simple webapp that is a directory that looks like:
>>>>>
>>>>> /test
>>>>> index.jsp
>>>>>
>>>>> deploys and runs just fine on the jetty-11 distro, so there must be
>>>>> something else going on with your setup.
>>>>>
>>>>> Firstly, I would make sure you're using the latest full release
>>>>> version of jetty-11, which is 11.0.1. Then build up from a simple webapp
>>>>> like the one above gradually adding more of your app in until you can see
>>>>> where the problem lies.
>>>>>
>>>>> regards
>>>>> Jan
>>>>>
>>>>> On Thu, 25 Mar 2021 at 09:19, Som Lima <[email protected]>
>>>>> wrote:
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> I am using working on the heroku archetype webapp for jersey
>>>>>> jax-rs
>>>>>> section 5.1
>>>>>>
>>>>>>
>>>>>> https://eclipse-ee4j.github.io/jersey.github.io/documentation/latest3x/getting-started.html#deploy-it-on-heroku
>>>>>>
>>>>>> It is publishing jax-rs resources.
>>>>>>
>>>>>> https://lit-savannah-55019.herokuapp.com/myresource
>>>>>>
>>>>>> The archetype seem to have everything
>>>>>> to be a webapp also , so I thought I just need to drop jsp in the
>>>>>> src/main/webapp/index.jsp
>>>>>>
>>>>>> Adding welcome-file-list tag and
>>>>>> welcome-file tag with index.jsp.
>>>>>> in the web.xml file.
>>>>>>
>>>>>> That didn't do the trick.
>>>>>>
>>>>>> I got a 404.
>>>>>> running jetty 11.0.0.beta3.
>>>>>>
>>>>>> Can you please tell me what more is needed for the index.jsp to be
>>>>>> published
>>>>>> .
>>>>>>
>>>>>> Regards
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> jetty-users mailing list
>>>>>> [email protected]
>>>>>> To unsubscribe from this list, visit
>>>>>> https://www.eclipse.org/mailman/listinfo/jetty-users
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Jan Bartel <[email protected]>
>>>>> www.webtide.com
>>>>> *Expert assistance from the creators of Jetty and CometD*
>>>>>
>>>>> _______________________________________________
>>>>> jetty-users mailing list
>>>>> [email protected]
>>>>> To unsubscribe from this list, visit
>>>>> https://www.eclipse.org/mailman/listinfo/jetty-users
>>>>>
>>>> _______________________________________________
>>>> jetty-users mailing list
>>>> [email protected]
>>>> To unsubscribe from this list, visit
>>>> https://www.eclipse.org/mailman/listinfo/jetty-users
>>>>
>>>
>>>
>>> --
>>> Jan Bartel <[email protected]>
>>> www.webtide.com
>>> *Expert assistance from the creators of Jetty and CometD*
>>>
>>> _______________________________________________
>>> jetty-users mailing list
>>> [email protected]
>>> To unsubscribe from this list, visit
>>> https://www.eclipse.org/mailman/listinfo/jetty-users
>>>
>> _______________________________________________
>> jetty-users mailing list
>> [email protected]
>> To unsubscribe from this list, visit
>> https://www.eclipse.org/mailman/listinfo/jetty-users
>>
>
>
> --
> Jan Bartel <[email protected]>
> www.webtide.com
> *Expert assistance from the creators of Jetty and CometD*
>
> _______________________________________________
> jetty-users mailing list
> [email protected]
> To unsubscribe from this list, visit
> https://www.eclipse.org/mailman/listinfo/jetty-users
>
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