Java Community | Help. Code. Learn.•4w ago

I cant able to run Servlets and fix this error

I created a Maven web project and tried everything, but this error is not going away. However, when I created JSP files, everything worked fine. But when I tried to create a servlet and imported from Jakarta, I got a 404 Not Found error. I also tried importing from javax, but the same error occurred. I checked the Targeted Runtime, and it's set to Apache Tomcat 10.1 with Jakarta 6.1. In Project Facets, I changed the Dynamic Web Module from 2.3 to 5.0. My JDK version is 23, but after these changes, the situation got even worse. Now, I'm getting a Catalina Lifecycle Exception and an Illegal Argument Exception.

29 Replies

JavaBot•4w ago

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dan1st•4w ago

It seems like you are mixing Java EE and Jakarta EE. Maje sure your web.xml is configured for Jakarta EE

WaqarrrrrrOP•4w ago

How can i configured this in my web xml

dan1st•4w ago

Can you show your web.xml? I think you have old Java EE references there

WaqarrrrrrOP•4w ago

Ok wait

WaqarrrrrrOP•4w ago

dan1st•4w ago

yes, line 2 and 3

WaqarrrrrrOP•4w ago

Okayy I need to change them that means

dan1st•4w ago

see https://stackoverflow.com/a/71550451/10871900

Stack Overflow

Updating "web.xml" when transitioning from Java Servlet 4 to Jakart...

I am transitioning a simple Servlet from using Java Servlet 4 to Jakarta Servlet 5. I noticed my web.xml file has references to the 4 spec. <?xml version="1.0" encoding="UTF-8&quo...

dan1st•4w ago

essentially start with

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_6_0.xsd"
         version="6.0">

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_6_0.xsd"
         version="6.0">

or possibly

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_6_1.xsd"
         version="6.1">

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_6_1.xsd"
         version="6.1">

since you said you are actually using 6.1 I think

WaqarrrrrrOP•4w ago

Yess

dan1st•4w ago

Though I think you should use Jakarta Servlet 6.0 with Tomcat 10.1 and Jakarta Servlet 6.1 with Tomcat 11

WaqarrrrrrOP•4w ago

Okayy i changed the jakarta version and the web xml file the red marks from my files are gone but its showing again error

WaqarrrrrrOP•4w ago

dan1st•4w ago

Can you show your new web.xml and also the full output shown in the console tab? btw please don't use screenshots for text but instead use code blocks

WaqarrrrrrOP•4w ago

Okay

WaqarrrrrrOP•4w ago

message.txt

WaqarrrrrrOP•4w ago

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_6_0.xsd"
         version="6.0">
  <display-name>Archetype Created Web Application</display-name>
  <servlet>
      <servlet-name>SaveNoteServlet</servlet-name>
      <servlet-class>com.servlets.SaveNoteServlet</servlet-class>
  </servlet>
  <servlet-mapping>
      <servlet-name>SaveNoteServlet</servlet-name>
      <url-pattern>/SaveNoteServlet</url-pattern>
  </servlet-mapping>
</web-app>

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_6_0.xsd"
         version="6.0">
  <display-name>Archetype Created Web Application</display-name>
  <servlet>
      <servlet-name>SaveNoteServlet</servlet-name>
      <servlet-class>com.servlets.SaveNoteServlet</servlet-class>
  </servlet>
  <servlet-mapping>
      <servlet-name>SaveNoteServlet</servlet-name>
      <url-pattern>/SaveNoteServlet</url-pattern>
  </servlet-mapping>
</web-app>

dan1st•4w ago

The servlets named [SaveNoteServlet] and [com.servlets.SaveNoteServlet] are both mapped to the url-pattern [/SaveNoteServlet] which is not permitted

Do you use annotations for SaveNoteServlet?

WaqarrrrrrOP•4w ago

Yess

dan1st•4w ago

you should only declare these things once either with annotations or in the web.xml so you can just remove the <servlet> and <servlet-mapping> elements from your web.xml

WaqarrrrrrOP•4w ago

Okayy Broo You are geniuss Its totally running fineee

dan1st•4w ago

I have just seen these things before

WaqarrrrrrOP•4w ago

Okayy

ayylmao123xdd•4w ago

daniel loves when people call him 'your sudoness' you should say it to show how grateful you are for solving the problem 😱 purely optional though

dan1st•4w ago

I don't

WaqarrrrrrOP•4w ago

Well i am new to this community so i need to learn things 😭

ayylmao123xdd•4w ago

no worries you can learn along the way

JavaBot•4w ago

Post Closed

This post has been closed by <@1077604975741505716>.

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I cant able to run Servlets and fix this error

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