Can not access output at localhost page - intellij-idea

Question

package com.example;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
System.out.println("xxxx");
SpringApplication.run(DemoApplication.class, args);
}
}
other class
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
#RestController
public class SampleController {
#RequestMapping("/")
public String index() {
return "Greetings from Spring Boot!";
}
}
I made tomcat working on port 8181, because when I used 8080 and run in intellj, it says 8080 is already in use and can not start it.
So, I use 8181 and after executing, it opens localhost:8181 page but it is a white page, nothing there.
These are logs of output
06-Mar-2016 14:38:16.383 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /opt/tomcat/webapps/manager
06-Mar-2016 14:38:16.977 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /opt/tomcat/webapps/manager has finished in 593 ms
These are catalina log
06-Mar-2016 14:38:05.878 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version: Apache Tomcat/8.0.32
06-Mar-2016 14:38:05.887 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built: Feb 2 2016 19:34:53 UTC
06-Mar-2016 14:38:05.888 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server number: 8.0.32.0
06-Mar-2016 14:38:05.888 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name: Linux
06-Mar-2016 14:38:05.891 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version: 4.2.0-30-generic
06-Mar-2016 14:38:05.892 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture: amd64
06-Mar-2016 14:38:05.893 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home: /usr/lib/jvm/java-8-oracle/jre
06-Mar-2016 14:38:05.893 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version: 1.8.0_74-b02
06-Mar-2016 14:38:05.894 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor: Oracle Corporation
06-Mar-2016 14:38:05.894 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE: /home/caneraydin/.IntelliJIdea16/system/tomcat/Unnamed_Last5
06-Mar-2016 14:38:05.895 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME: /opt/tomcat
06-Mar-2016 14:38:05.896 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=/home/caneraydin/.IntelliJIdea16/system/tomcat/Unnamed_Last5/conf/logging.properties
06-Mar-2016 14:38:05.897 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
06-Mar-2016 14:38:05.898 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote=
06-Mar-2016 14:38:05.899 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote.port=1099
06-Mar-2016 14:38:05.900 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote.ssl=false
06-Mar-2016 14:38:05.900 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcom.sun.management.jmxremote.authenticate=false
06-Mar-2016 14:38:05.901 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.rmi.server.hostname=127.0.0.1
06-Mar-2016 14:38:05.901 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.endorsed.dirs=/opt/tomcat/endorsed
06-Mar-2016 14:38:05.902 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=/home/caneraydin/.IntelliJIdea16/system/tomcat/Unnamed_Last5
06-Mar-2016 14:38:05.905 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=/opt/tomcat
06-Mar-2016 14:38:05.905 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=/opt/tomcat/temp
06-Mar-2016 14:38:05.906 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /home/caneraydin/Downloads/idea-IU-144.4199.23/bin::/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
06-Mar-2016 14:38:06.265 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8181"]
06-Mar-2016 14:38:06.296 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
06-Mar-2016 14:38:06.302 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-nio-34294"]
06-Mar-2016 14:38:06.304 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
06-Mar-2016 14:38:06.305 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 1704 ms
06-Mar-2016 14:38:06.353 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service Catalina
06-Mar-2016 14:38:06.353 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.0.32
06-Mar-2016 14:38:06.370 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8181"]
06-Mar-2016 14:38:06.433 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-34294"]
06-Mar-2016 14:38:06.448 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 142 ms
06-Mar-2016 14:38:16.383 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /opt/tomcat/webapps/manager
06-Mar-2016 14:38:16.977 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /opt/tomcat/webapps/manager has finished in 593 ms
What am i doing wrong?

Answer 1

change the port in application.properties file to 8181 it will be default 8080
Regards,
Nitin