How to check whether the tomcat server is listening on particular port?

Question

I'm trying to run a servlet program with tomcat as server. But the tomcat server is not running. I looked at the services.msc but it's not there. Below is the log created while running the servlet program via intelj

"E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23\bin\catalina.bat" run
[2015-06-12 11:15:57,837] Artifact servlet:war exploded: Server is not connected. Deploy is not available.
Using CATALINA_BASE:   "C:\Users\Van\.IntelliJIdea14\system\tomcat\Tomcat_8_0_23_servlet"
Using CATALINA_HOME:   "E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23"
Using CATALINA_TMPDIR: "E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23\temp"
Using JRE_HOME:        "C:\Program Files\Java\jdk1.8.0_45"
Using CLASSPATH:       "E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23\bin\bootstrap.jar;E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23\bin\tomcat-juli.jar"
12-Jun-2015 11:15:59.582 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version:        Apache Tomcat/8.0.23
12-Jun-2015 11:15:59.584 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built:          May 19 2015 14:58:38 UTC
12-Jun-2015 11:15:59.584 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server number:         8.0.23.0
12-Jun-2015 11:15:59.584 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name:               Windows 8
12-Jun-2015 11:15:59.584 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version:            6.2
12-Jun-2015 11:15:59.584 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture:          amd64
12-Jun-2015 11:15:59.584 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home:             C:\Program Files\Java\jdk1.8.0_45\jre
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version:           1.8.0_45-b15
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor:            Oracle Corporation
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE:         C:\Users\Van\.IntelliJIdea14\system\tomcat\Tomcat_8_0_23_servlet
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME:         E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote=
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote.port=1099
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote.ssl=false
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote.authenticate=false
12-Jun-2015 11:15:59.585 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.rmi.server.hostname=127.0.0.1
12-Jun-2015 11:15:59.586 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=C:\Users\Van\.IntelliJIdea14\system\tomcat\Tomcat_8_0_23_servlet\conf\logging.properties
12-Jun-2015 11:15:59.586 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
12-Jun-2015 11:15:59.586 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.endorsed.dirs=E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23\endorsed
12-Jun-2015 11:15:59.586 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=C:\Users\Vanuston\.IntelliJIdea14\system\tomcat\Tomcat_8_0_23_servlet
12-Jun-2015 11:15:59.586 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23
12-Jun-2015 11:15:59.586 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=E:\Avinash\Avinash\Inteljidea projects\apache-tomcat-8.0.23\temp
12-Jun-2015 11:15:59.586 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent Loaded APR based Apache Tomcat Native library 1.1.33 using APR version 1.5.1.
12-Jun-2015 11:15:59.586 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].
12-Jun-2015 11:16:00.718 INFO [main] org.apache.catalina.core.AprLifecycleListener.initializeSSL OpenSSL successfully initialized (OpenSSL 1.0.1m 19 Mar 2015)
12-Jun-2015 11:16:01.278 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-apr-8080"]
12-Jun-2015 11:16:01.292 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-apr-8009"]
12-Jun-2015 11:16:01.293 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 2252 ms
12-Jun-2015 11:16:01.348 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service Catalina
12-Jun-2015 11:16:01.349 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.0.23
12-Jun-2015 11:16:01.355 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-apr-8080"]
12-Jun-2015 11:16:01.362 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-apr-8009"]
12-Jun-2015 11:16:01.363 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 69 ms
Connected to server
[2015-06-12 11:16:01,503] Artifact servlet:war exploded: Artifact is being deployed, please wait...
[2015-06-12 11:16:02,178] Artifact servlet:war exploded: Artifact is deployed successfully
[2015-06-12 11:16:02,178] Artifact servlet:war exploded: Deploy took 675 milliseconds

It actually opened the webpage but fails to print the message hello world. I think tomcat is not running on the specified port 8080.

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
    <servlet>
        <servlet-name>servlet</servlet-name>
        <servlet-class>Servlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>servlet</servlet-name>
        <url-pattern>/myservlet</url-pattern>
    </servlet-mapping>

</web-app>

Update:

localhost:8080/myservlet displays the hello world page but we need to enter the address manually. But upon running servlet project directly from intelj, it opens localhost:8080 page which gives an empty page.

code:

@WebServlet(name = "Servlet")
public class Servlet extends HttpServlet {
    private String message;
    private String mes;
    public void init() throws ServletException
    {
        // Do required initialization
        message = "Hello World.";
        mes = "Welcome to our new Page..";
    }
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // Set response content type
        response.setContentType("text/html");

        // Actual logic goes here.
        PrintWriter out = response.getWriter();
        out.println("<h1>" + message + "</h1></br>" + "<h2>" + mes + "</h2>");
    }
    public void destroy()
    {
        // do nothing.
    }
}

Lets do this. Download a new tomcat8 from https://tomcat.apache.org/download-80.cgi. After, execute bin/startup.bat. And then try localhost:8080, you should see management app of tomcat. If you do not see we will look for root cause, if you see we will drill down to intellij. — bhdrkn, Jun 12 '15 at 06:39
If you think your app is deployed successfully, then you should be sharing your code (servlet or etc.), servlet mappings or similar to debug the problem. — Himanshu Bhardwaj, Jun 12 '15 at 06:41
@Rajesh but here, server is connected and my webapp is actually deployed. — Avinash Raj, Jun 12 '15 at 06:41
If it is not working in the browser itself as you have mentioned in one of the answers then definitely it is a problem with your `tomcat` windows installation or any other service may be listening to that port `8080`. You could try a fresh installation though — mustangDC, Jun 12 '15 at 06:43
@mustangDC is there any possiblity of port 8080 is used by another application. And i didn't installed tomcat. Just downloaded the tomcat.zip file and then i specify the path in the server configuration. — Avinash Raj, Jun 12 '15 at 06:44
sorry, `http://localhost:8080/myservlet` works.. I failed to specify the path.. Thanks for your time.. I'm going to delete this question, i don't think that this will helpful to the future readers. — Avinash Raj, Jun 12 '15 at 06:48
`wmic process list brief | find /i "tomcat.exe"` try this with Administrative priviledges. It will give you whether the process is used or not — mustangDC, Jun 12 '15 at 06:48
Obviously, `http://localhost:8080/myservlet` is the format you should use. :) — mustangDC, Jun 12 '15 at 06:51

score 3 · Answer 1 · answered Jun 12 '15 at 07:09

Seems the application has deployed successfully. Try to access the application using the machine name and the port.

E.g.:- < pc-name >:8080

Else check in the tomcat server configuration connector details in;

/conf/server.xml

In the server xml look for the connector details as below;

<Connector port="8080" address="localhost"
           maxHttpHeaderSize="8192" maxPostSize="262144"
           maxThreads="250" minSpareThreads="25"
           enableLookups="false" redirectPort="8443" acceptCount="100"
           connectionTimeout="60000" disableUploadTimeout="true" />

There should be a connector which allows your browser listen to port 8080 and address to access the server.

Please try with above details.

score 1 · Answer 2 · answered Jun 12 '15 at 06:48

1

Check your server.xml file for Connector definition. That should tell you what port your server is listening on.

Another way to find out is using TCPView. This tool will list out the TCP ports for a given process.

answered Jun 12 '15 at 06:48

vinay chilakamarri

241
2
8

How to check whether the tomcat server is listening on particular port?

2 Answers2

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