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last plank Mar 28, 2024, 4:27 PM

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I've been trying to run this local host for a simple website calculator but i get this output:

amber violetBOT Mar 28, 2024, 4:27 PM

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last plank Mar 28, 2024, 4:28 PM

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📎 message.txt

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and here is the result when i try to run with site:run

sharp hound Mar 28, 2024, 4:45 PM

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That's not what deploy and site mean in Maven linguo. Those are goals that work also for library projects. Obviously you're not going to have a library "run" nor "be a website"

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I'm not sure how do you make a servlet run with Maven, it's been a while. Maybe you just need to have it packaged, then you need to copy the package to your tomcat directory and run tomcat as usual. IntelliJ might help with these

last plank Mar 28, 2024, 5:20 PM

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sharp hound That's not what deploy and site mean in Maven linguo. Those are goals that work ...

i worked throuygh it and managed to fix it but i have a new error now

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so the first part of it works

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but now it seems to have a issue with the second half

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when i hit calculate

sharp hound Mar 28, 2024, 5:30 PM

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It seems to be complaining that you designated something for a role for which it has to be a servlet, but it's not a servlet

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We'd be needing the code here

last plank Mar 28, 2024, 5:41 PM

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sharp hound We'd be needing the code here

which part of it?

sharp hound Mar 28, 2024, 5:43 PM

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I'd have guessed everything that has a chance to designate a class that may need to be a servlet, as well as the class itself who'd need to be a servlet and is seen as not one. But I'm not very clear about the need to restrict what you're going to show

last plank Mar 28, 2024, 5:43 PM

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just the limitation with discord on file size

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but let me see

sharp hound Mar 28, 2024, 5:44 PM

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Yeah, for what you're showing that's very much not normal that it intervenes

amber violetBOT Mar 28, 2024, 5:44 PM

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desert forumBOT Mar 28, 2024, 5:44 PM

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//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by FernFlower decompiler)
//

package controller;

import java.io.IOException;

public class CalculationsServlet {
   private static final long serialVersionUID = 1L;

   public CalculationsServlet() {
       throw new Error("Unresolved compilation problems: \n\tThe import javax.servlet cannot be resolved\n\tThe import javax.servlet cannot be resolved\n\tThe import javax.servlet cannot be resolved\n\tThe import javax.servlet cannot be resolved\n\tThe import javax.servlet cannot be resolved\n\tWebServlet cannot be resolved to a type\n\tHttpServlet cannot be resolved to a type\n\tHttpServletRequest cannot be resolved to a type\n\tHttpServletResponse cannot be resolved to a type\n\tServletException cannot be resolved to a type\n\tHttpServletRequest cannot be resolved to a type\n\tHttpServletResponse cannot be resolved to a type\n\tServletException cannot be resolved to a type\n");
   }

   protected void doGet(HttpServletRequest var1, HttpServletResponse var2) throws ServletException, IOException {
       throw new Error("Unresolved compilation problems: \n\tHttpServletRequest cannot be resolved to a type\n\tHttpServletResponse cannot be resolved to a type\n\tServletException cannot be resolved to a type\n");
   }

   protected void doPost(HttpServletRequest var1, HttpServletResponse var2) throws ServletException, IOException {
       throw new Error("Unresolved compilation problems: \n\tHttpServletRequest cannot be resolved to a type\n\tHttpServletResponse cannot be resolved to a type\n\tServletException cannot be resolved to a type\n");
   }
} ```

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last plank Mar 28, 2024, 5:45 PM

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not sure why some of it didnt format but thats my calculationsservlet.class

sharp hound Mar 28, 2024, 5:45 PM

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Could you try maybe a .java instead?

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Also I'd be wary about all the compilation errors

last plank Mar 28, 2024, 5:46 PM

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the file i sent is from the build folder

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but the .java version is under the src

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should i send that instead?

sharp hound Mar 28, 2024, 5:48 PM

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I mean, technically we've established that your project doesn't compile. So we'd need to switch the goal to finding the compilation errors

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They would normally be everywhere

last plank Mar 28, 2024, 5:48 PM

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doesnt it technically compile but stop working halfway through at the specific point?

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or am i looking at things wrong

sharp hound Mar 28, 2024, 5:49 PM

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Usually, "it compiles" is a yes/no question. Either everything compiles, or it doesn't compile. It's not like it's difficult to have a project without any compilation error

last plank Mar 28, 2024, 5:49 PM

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ah alright

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im thinking its the .class file because it says this in the error after clicking the button

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sharp hound Mar 28, 2024, 5:51 PM

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This is a runtime thing. Forget about running stuff, your project doesn't compile. It can't run

last plank Mar 28, 2024, 5:51 PM

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alright

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how do i go about fixing it?

sharp hound Mar 28, 2024, 5:51 PM

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First seeing the compile errors would help

last plank Mar 28, 2024, 5:52 PM

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📎 message.txt

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at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:673)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:344)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:391)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:896)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1736)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63)
at java.base/java.lang.Thread.run(Thread.java:1570)

last plank Mar 28, 2024, 5:52 PM

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last plank

this is the console when running

last plank Mar 28, 2024, 5:53 PM

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last plank at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93) ...

this is the localhost log from tomcat

sharp hound Mar 28, 2024, 5:53 PM

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That's not a compiling command. Also you have an IDE. Look at the errors in the IDE

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Leave tomcat alone and compile first

last plank Mar 28, 2024, 5:54 PM

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alright

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wait im a bit confused now how should i compile it

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sorry im a bit new to this so i might have some stupid questions

sharp hound Mar 28, 2024, 5:55 PM

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You shouldn't. You want to see the errors. For that you open your files. Your IDE will show the error obtained in attempts to compile the files

last plank Mar 28, 2024, 5:56 PM

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the ide itself doesnt seem to show any issues

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sharp hound Mar 28, 2024, 5:56 PM

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Admittedly that's weird, but I don't see you opening any files regardless

last plank Mar 28, 2024, 5:58 PM

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do you mean opening files like this?

sharp hound Mar 28, 2024, 6:00 PM

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Yes. But that looks fine. No idea how did you obtain that .class file

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I guess run mvn clean install and let's see if something changes

last plank Mar 28, 2024, 6:01 PM

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alright done

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still is the same

sharp hound Mar 28, 2024, 6:02 PM

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Then just mvn clean for now

last plank Mar 28, 2024, 6:02 PM

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should i run after mvn clean?

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but seems to be the same

sharp hound Mar 28, 2024, 6:03 PM

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mvn clean is supposed to clean .class files, they're supposed to not exist anymore afterwards

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Though I'm not entirely sure where does maven keep the class files.

last plank Mar 28, 2024, 6:03 PM

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oh yeah it did remove the class files

sharp hound Mar 28, 2024, 6:04 PM

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And the build directory?

last plank Mar 28, 2024, 6:04 PM

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yes

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wait no

sharp hound Mar 28, 2024, 6:04 PM

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And when you run mvn install they come back?

last plank Mar 28, 2024, 6:04 PM

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it didnt remove from build directory

sharp hound Mar 28, 2024, 6:05 PM

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Look, remove everything that is a .class or called build or target. If mvn clean doesn't remove it then delete it yourself

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Then we try again

last plank Mar 28, 2024, 6:06 PM

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alright

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says this when i try to delete it

sharp hound Mar 28, 2024, 6:07 PM

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Mmmh. But you weren't trying to modify it. I guess close the IDE, delete them, and reopen the IDE

last plank Mar 28, 2024, 6:07 PM

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alright

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removed the .class files

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there was one under target as well

sharp hound Mar 28, 2024, 6:10 PM

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I'm surprised mvn clean left both, but fine

last plank Mar 28, 2024, 6:11 PM

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errors seem to look the same

sharp hound Mar 28, 2024, 6:12 PM

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Errors after you do what? Last time I checked, we had deleted all .class files

last plank Mar 28, 2024, 6:12 PM

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i tried running it

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am i not supposed to?

sharp hound Mar 28, 2024, 6:13 PM

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Well, usually one would only run something that exists. Not something that was deleted. But eh, creativity

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Anyway, let's mvn install and see whether there are .class files somewhere.

last plank Mar 28, 2024, 6:13 PM

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im just getting a bit carried away with checking for changes

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[INFO] --- war:3.4.0:war (default-war) @ slab-calculations ---
[INFO] Packaging webapp
[INFO] Assembling webapp [slab-calculations] in [/Users/sushantpotu/Downloads/trial/target/slab-calculations]
[INFO] Processing war project
[INFO] Copying webapp resources [/Users/sushantpotu/Downloads/trial/src/main/webapp]
[INFO] Building war: /Users/sushantpotu/Downloads/trial/target/slab-calculations.war
[INFO]
[INFO] --- install:3.1.1:install (default-install) @ slab-calculations ---
[INFO] Installing /Users/sushantpotu/Downloads/trial/pom.xml to /Users/sushantpotu/.m2/repository/org/example/slab-calculations/1.0-SNAPSHOT/slab-calculations-1.0-SNAPSHOT.pom
[INFO] Installing /Users/sushantpotu/Downloads/trial/target/slab-calculations.war to /Users/sushantpotu/.m2/repository/org/example/slab-calculations/1.0-SNAPSHOT/slab-calculations-1.0-SNAPSHOT.war
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.846 s
[INFO] Finished at: 2024-03-28T14:13:46-04:00
[INFO] --------------------------------------------------

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this is what it says

sharp hound Mar 28, 2024, 6:14 PM

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Any .class file somewhere?

last plank Mar 28, 2024, 6:15 PM

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two under target

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the goldish colored part

sharp hound Mar 28, 2024, 6:16 PM

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What does it look like opening them?

last plank Mar 28, 2024, 6:18 PM

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sharp hound Mar 28, 2024, 6:19 PM

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That's more like it.

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Not far from them, under target, you should find a .war file. Try and run that in tomcat

last plank Mar 28, 2024, 6:20 PM

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is it this one?

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it doesnt let me open it or anything

sharp hound Mar 28, 2024, 6:27 PM

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Not a problem. It's just what you're supposed to give tomcat to run

last plank Mar 28, 2024, 6:28 PM

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How do I make tomcat run it?

last plank Mar 28, 2024, 10:04 PM

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tried putting the war file in the webapps folder but didnt work, logs folder was empty

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not sure what to do now

#java servlets issues