Re: Tomcat error at run-time.

[noel joseph]

Hey Chris,

This is my code...

package com.TomCat.EmbTC;

import java.io.File;
import javax.servlet.ServletException;
import org.apache.catalina.LifecycleException;
import org.apache.catalina.startup.Tomcat;

public class App {
 public static void main(String[] args) throws LifecycleException,
InterruptedException,
 ServletException {
  String docBase = "src/main/webapp/";

  Tomcat tomcat = new Tomcat();
  String webPort = System.getenv("PORT");
        if(webPort == null || webPort.isEmpty()) {
            webPort = "8111";
        }
        tomcat.setPort(Integer.valueOf(webPort));

  tomcat.addWebapp("/", new File(docBase).getAbsolutePath());
   System.out.println("configuring app with basedir: " + new File("./" +
docBase).getAbsolutePath());

  tomcat.start();
  tomcat.getServer().await();

 }
}

and this is my pom.xml file....
<project xmlns="http://maven.apache.org/POM/4.0.0"; xmlns:xsi="
http://www.w3.org/2001/XMLSchema-instance";
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/maven-v4_0_0.xsd";>
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.TomCat</groupId>
  <artifactId>EmbTC</artifactId>
  <packaging>jar</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>EmbTC Maven Webapp</name>
  <url>http://maven.apache.org</url>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <tomcat.version>8.5.5</tomcat.version>
    </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>

<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-core</artifactId>
            <version>${tomcat.version}</version>
        </dependency>

        <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-jasper</artifactId>
            <version>${tomcat.version}</version>
        </dependency>

        <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-jasper-el</artifactId>
            <version>${tomcat.version}</version>
        </dependency>

        <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-jsp-api</artifactId>
            <version>${tomcat.version}</version>
        </dependency>
  </dependencies>
  <build>
     <finalName>EmbTC</finalName>
  </build>
</project>


I am not making use of a web.xml file.
This codes running perfectly on eclipse when run, depolying a tomcat server
as expected.
But when i convert into a jar and run it as a jnlp file i get the error...

org.apache.catalina.LifecycleException: A child container failed during
start
at
org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:947)
at
org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at
org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at
org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:793)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.startup.Tomcat.start(Tomcat.java:344)
at com.TomCat.EmbTC.App.main(App.java:23)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.javaws.Launcher.executeApplication(Unknown Source)
at com.sun.javaws.Launcher.executeMainClass(Unknown Source)
at com.sun.javaws.Launcher.doLaunchApp(Unknown Source)
at com.sun.javaws.Launcher.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

Please let me know what's the problem with my code.

Thanks,
Noel