A Spring Boot web application example, using embedded Tomcat + Mustache template engine, and package as an executable JAR file. Technologies used : Spring Boot 1.5.2.RELEASE Spring 4.3.7.RELEASE jmustache 1.13 Thymeleaf 2.1.5.RELEASE Tomcat Embed 8.5.11 Maven 3 Java 8 Note Spring Boot uses jmustache to integrate Mustache as template engine. 1. Project Directory 2. Project […]
In Spring Boot, you can’t configure the embedded Tomcat maxSwallowSize via the common application properties, there is no option like server.tomcat.*.maxSwallowSize Solution To fix it, you need to declare a TomcatEmbeddedServletContainerFactory bean and configure the maxSwallowSize like this : //… import org.apache.coyote.http11.AbstractHttp11Protocol; import org.springframework.boot.context.embedded.tomcat.TomcatConnectorCustomizer; import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory; private int maxUploadSizeInMb = 10 * 1024 * 1024; […]
This article shows you how to run or debug a web application on Tomcat server, using IntelliJ IDEA. Note Unlike Eclipse IDE, there is always a ‘server view’ to configure the add server, IntelliJ do things differently, you need to add an “artifact (war file)” first, then only the “server view” will be displayed at […]
A Spring servlet initializer to configure the file upload limit, 5mb per file and 10mb per request. MyWebInitializer.java public class MyWebInitializer extends AbstractAnnotationConfigDispatcherServletInitializer { private int maxUploadSizeInMb = 5 * 1024 * 1024; // 5 MB //… @Override protected void customizeRegistration(ServletRegistration.Dynamic registration) { // upload temp file will put here File uploadDirectory = new File(System.getProperty("java.io.tmpdir")); […]
In this article, we will show you how to create a Spring Boot traditional WAR file and deploy to a Tomcat servlet container. In Spring Boot, to create a WAR for deployment, we need 3 steps: Extends SpringBootServletInitializer Marked the embedded servlet container as provided. Update packaging to war Tested with Spring Boot 2.1.2.RELEASE Tomcat […]
Default, Spring Boot web application starts embedded web server (Tomcat, Jetty, etc.) in port 8080. And we can configure or change the port using the server.port property. Table of contents 1. application.properties 2. application.yml 3. Command Line 4. Environment Variable 5. WebServerFactoryCustomizer 6. Download Source Code 7. References P.S Tested with Spring Boot 1, 2, […]
A Spring Boot web application example, using embedded Tomcat + JSP template, and package as an executable WAR file. Technologies used : Spring Boot 1.4.2.RELEASE Spring 4.3.4.RELEASE Tomcat Embed 8.5.6 Maven 3 Java 8 1. Project Directory Create the following folders manually : 2. Project Dependencies Maven example. Read comments for self-explanatory. pom.xml <?xml version="1.0" […]
In this tutorial, we will show you how to install Apache Tomcat 8 On Debian, manually. Environment : Debian 7 JDK 1.8 Apache Tomcat 8 P.S Assume the JDK 1.8 is installed in /opt/jdk folder. Refer to this guide to install Oracle JDK 8 on Debian. Note On Debian 7, the Tomcat 8 is not […]
Just upgraded to Java 8, and the Tomcat 7 keeps prompting the following exceptions: Jul 20, 2015 4:06:36 PM org.apache.catalina.startup.ContextConfig processAnnotationsJar SEVERE: Unable to process Jar entry [jdk/nashorn/internal/objects/NativeURIError.class] from Jar [jar:file:/Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home/jre/lib/ext/nashorn.jar!/] for annotations org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 15 at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:131) at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:60) at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:209) at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:119) at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2066) at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:1942) at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1908) […]
By default Eclipse deploys web application to a internal plugin folder called wtpwebapps, which is located in the following directory : {Your_Workspace}/.metadata/.plugins/org.eclipse.wst.server.core/tmp{number}/wtpwebapps #Example 1 – Windows C:\Users\mkyong\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps #Example 2 – Mac OSX /Users/mkyong/Documents/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps How it works In Server view, double clicks on the “Tomcat Server”, the deployment work is defined in the Server Locations To […]
This tutorial shows you how to configure Nginx as a reverse proxy to redirect the traffics from port 80 to Apache Tomcat on port 8080. Here is the environment in my Linode server : Debian 7.5 Nginx 1.2.1 Tomcat 7.0.28 P.S Both Nginx and Tomcat are installed via apt-get install. 1. Tomcat Configuration Edit server.xml, […]
By default, Tomcat’s manager webapp is able to access via yourapp:8080/manager. It is a good practice to change the default /manager to something else, to avoid potential brute force attack. Environment Tomcat 7 (apt-get install) Debian 7.5 1. Solution This article show you how to change / rename the default manager webapp path from “/manager” […]
The current environment is using Tomcat 7 + JDK 6. How to configure Tomcat to use JDK 7? Environment Tomcat 7 (apt-get install) Debian 7.5 JDK 6 and JDK 7 P.S Tomcat 7 is installed via apt-get Note You may interest at this tutorial – Apache Tomcat 8 + JDK 8 on Debian 1. Solution […]
In this article, we will show you how to find out which JRE / JDK or JAVA_HOME is used by the Tomcat container. Environment : Debian 7.5 Tomcat 7, installed via apt-get JDK 6 and JDK 7 Note To understand how Tomcat pick up which JDK to run, refer to the Tomcat startup script – […]
In this tutorial, we will show you how to use jConsole to remote access a Tomcat instance, for JVM monitoring stuff. Tools and environment used : Ubuntu 13 + Tomcat 7 + 192.168.1.142 Windows 8 + jConsole + 192.168.1.200 1. Tomcat + JMX To connect with jConsole, Tomcat need to enable the JMX options. To […]
In Eclipse IDE, run a Java web application with Tomcat server plugin, but the console prompts Exception in thread "x" java.lang.OutOfMemoryError: Java heap space 1. Solution – Increase Heap Size in Tomcat By default, Tomcat allocated a small amount of heap size. To solve it, you need to increase the Tomcat’s heap size manually. 1.1 […]
Problem Import a Java web project in Eclipse, build with Maven, once create a Tomcat server instance, unable to add the Java web project, and showing Tomcat version 6.0 only supports J2EE 1.2, 1.3, 1.4, and Java EE 5 Web modules Tools used : Eclipse Juno 4.2 Tomcat 6.0.35 JDK 1.6 Solution In project, “.settings” […]
In this tutorial, we will show you how to use Maven-Tomcat plugin to package and deploy a WAR file to Tomcat, both in Tomcat 6 and 7. Libraries used : Maven 3 Tomcat 6.0.37 Tomcat 7.0.53 Tomcat 7 Deploy URL = http://localhost:8080/manager/text Command = mvn tomcat7:deploy Tomcat 6 Deploy URL = http://localhost:8080/manager/ Command = mvn […]
In this article, we show you how to implement container authentication with JAX-WS, under Tomcat 6.0. In this way, the authentication is declarative rather than programmatic like this – application authentication in JAX-WS. And Tomcat implement the container authentication via security realm. At the end of this article, the deployed web service will authenticate user […]
In this article, we show you how to deploy a JAX-WS web service on Tomcat with TLS / SSL or https secure connection enabled. Actually, the answer is quite simple, just deploys it as a normal web service and configured SSL connection on your Tomcat server properly 🙂 Note This article is just a combination […]
Problem Configured Tomcat’s SSL, while starting Tomcat server, it hits following exception : 14 Disember 2010 4:18:31 PM org.apache.tomcat.util.net.jsse.JSSESocketFactory getStore SEVERE: Failed to load keystore type JKS with path c:\keystore due to Keystore was tampered with, or password was incorrect java.io.IOException: Keystore was tampered with, or password was incorrect at sun.security.provider.JavaKeyStore.engineLoad(JavaKeyStore.java:771) at sun.security.provider.JavaKeyStore$JKS.engineLoad(JavaKeyStore.java:38) at java.security.KeyStore.load(KeyStore.java:1185) […]
A guide to show you how to configure Tomcat 6.0 to support SSL or https connection. 1. Generate Keystore First, uses “keytool” command to create a self-signed certificate. During the keystore creation process, you need to assign a password and fill in the certificate’s detail. $Tomcat\bin>keytool -genkey -alias mkyong -keyalg RSA -keystore c:\mkyongkeystore Enter keystore […]
Here’s a guide to show you how to configure MySQL datasource in Tomcat 6. 1. Get MySQL JDBC Driver Get JDBC driver here – http://www.mysql.com/products/connector/ , for example, mysql-connector-java-5.1.9.jar, and copy it to $TOMCAT\lib folder. 2. Create META-INF/context.xml Add a file META-INF/context.xml into the root of your web application folder, which defines database connection detail […]
Here’s a guide to show you how to deploy JAX-WS web services on Tomcat servlet container. See following summary steps of a web service deployment. Create a web service (of course). Create a sun-jaxws.xml, defines web service implementation class. Create a standard web.xml, defines WSServletContextListener, WSServlet and structure of a web project. Build tool to […]
Problem While deploying JSF 2.0 web application to Tomcat 6.0.26, hits the “JSP version of the container is older than 2.1” exception and failed to start the Tomcat server. But the JSP api v2.1 is included in the project class path, why the Tomcat is still saying that JSP version is older than 2.1? <dependency> […]
Problem During the Eclipse debugging session, the “web.xml” will always deploy to a wrong folder. It’s always cause by manual migrated or converted a Java web project to Maven’s project. See the Eclipse’s workspace folder structure, Tomcat in Eclipse is deploy “web.xml” to a wrong folder, and causing the entire web application fail to run. […]
I had encountered following error message while starting my Tomcat server. [2009-01-16 11:22:19] [1343 prunsrv.c] [debug] Procrun log initialized [2009-01-16 11:22:19] [info] Procrun (2.0.4.0) started [2009-01-16 11:22:19] [info] Running Service… [2009-01-16 11:22:19] [1166 prunsrv.c] [debug] Inside ServiceMain… [2009-01-16 11:22:19] [info] Starting service… … [error] The specified module could not be found. [2009-01-16 11:22:19] [994 prunsrv.c] […]
Q : Is there a function in Java to retrieve the Tomcat (Catalina) home directory? A : Yes, Tomcat home directory or Catalina directory is stored at the Java System Property environment. If the Java web application is deployed into Tomcat web server, we can get the Tomcat directory with the following command System.getProperty("catalina.base");
Tomcat by default runs on port number 8080, However there is high chance get a port conflict with others program. Sometime we just need to change the Tomcat port number. Steps of changing the Tomcat Port 1) Locate server.xml in {Tomcat installation folder}\ conf \ 2) Find following similar statement <!– Define a non-SSL HTTP/1.1 […]
Often time, Tomcat may hits the following java.lang.OutOfMemoryError: PermGen space error. java.lang.OutOfMemoryError: PermGen space at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:620) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) It’s usually happened after the Tomcat restarts a few times. 1. Solution By default, Tomcat is assigned a very little PermGen memory for the running process. To fix it, increase the PermGen memory settings […]
This tutorial shows you how to install Tomcat on Ubuntu, with help of the buith-in apt-get command. 1. apt-get install 1.1 Find an available Tomcat package to install $ sudo apt-cache search tomcat //… tomcat7 – Servlet and JSP engine tomcat7-admin – Servlet and JSP engine — admin web applications tomcat7-common – Servlet and JSP […]
Problem As i said in previously post, Tomcat 5.5.25 made a lot of modification in policy file, which may enhance security on web application but it also causing a lot of problem, see another error message : SEVERE: Context initialization failed java.security.AccessControlException: access denied (java.lang.RuntimePermission accessDeclaredMembers) at java.security.AccessControlContext.checkPermission(AccessControlContext.java:323) Solution Policy file issue, vi 04webapps.policy, this […]
To find out the Tomcat version, find this file – version.sh for *nix or version.bat for Windows. This version.sh file is normally located in the Tomcat bin folder. For example : mkyong@hcompass:/usr/share/tomcat7/bin$ ./version.sh Using CATALINA_BASE: /usr/share/tomcat7 Using CATALINA_HOME: /usr/share/tomcat7 Using CATALINA_TMPDIR: /usr/share/tomcat7/temp Using JRE_HOME: /usr Using CLASSPATH: /usr/share/tomcat7/bin/bootstrap.jar:/usr/share/tomcat7/bin/tomcat-juli.jar Server version: Apache Tomcat/7.0.28 Server built: Apr […]
Problem After upgraded to Tomcat version 5.5.25, it starting to hit a lot of errors in security policy : Caused by: java.security.AccessControlException: access denied (java.io.FilePermission /usr/share/tomcat5.5- webapps/jsp-examples/WEB-INF/classes/logging.properties read) Solution Above error is caused by the Tomcat’s policy file, Tomcat 5.5.25 made a lot of modification on policy file. To fix it, you need to make […]
Is there or what is the default administrator user and password for Tomcat? Tested : Tomcat 8.0.30 Tomcat 7.0.67 Tomcat 6.0.44 Article update history Updated 03/02/2016 : Add support for Tomcat 7 and 8. Updated 08/04/2011 : Update article. 1. Tomcat 7 and Tomcat 8 Tomcat users are defined in the file – $TOMCAT_HOME/conf/tomcat-users.xml, by […]
