Problem in Struts Dispatcher

[Alberto Rodriguez]

Hi,

I am new to struts2. I have configured struts2 in Netbeans/Glassfish. Now i am trying to run a simple application. I am getting this error. Please let me know where am i missing.

Find the error that i am getting. Thanks in advance.


HTTP Status 500 - Internal Server Error

type Exception report

messageInternal Server Error

descriptionThe server encountered an internal error that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: The Struts dispatcher cannot be found. This is usually caused by using Struts tags without the associated filter. Struts tags are only usable when the request has passed through its servlet filter, which initializes the Struts dispatcher needed for this tag. - [unknown location]

root cause

The Struts dispatcher cannot be found. This is usually caused by using Struts tags without the associated filter. Struts tags are only usable when the request has passed through its servlet filter, which initializes the Struts dispatcher needed for this tag. - [unknown location]

note The full stack traces of the exception and its root causes are available in the GlassFish Server Open Source Edition 4.1 logs.
GlassFish Server Open Source Edition 4.1



This is my web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
<init-param>
<param-name>struts.ognl.allowStaticMethodAccess</param-name>
<param-value>true</param-value>
</init-param>
</filter>

<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<session-config>
<session-timeout>30</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

And there is my struts.xml

<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
<!-- Configuration for the default package. -->
<package name="DBAF_pract6ognl" extends="struts-default">
<action name="saludo" class="acciones.SaludoAction">
<result>index.jsp</result>
</action>
<action name="stack" class="acciones.StackAction">
<result>stack.jsp</result>
</action>
<action name="datos" class="acciones.DatosAction">
<result>datos.jsp</result>
</action>
<action name="constantes" class="acciones.ConstantesAction">
<result>constantes.jsp</result>
</action>
</package>
</struts>

[A.J. Côté]

Hello,

Make sure struts2-core-X.X.X.jar is available to your application and/or tomcat. web.xml looks OK at first glance.

Look at your server logs when it starts up and when it handles the request, you may find more there.

[Alberto Rodriguez]

A.J. Côté wrote:Hello,

Make sure struts2-core-X.X.X.jar is available to your application and/or tomcat. web.xml looks OK at first glance.

Look at your server logs when it starts up and when it handles the request, you may find more there.

Hi, thanks for you time.
All in my project looks OK; Searching, i commented this line in my jps file <%@taglib uri="/struts-tags" prefix="s" %> and it works, but that isn't what i want, can you help me?

[A.J. Côté]

Alberto Rodriguez wrote:

A.J. Côté wrote:Hello,

Make sure struts2-core-X.X.X.jar is available to your application and/or tomcat. web.xml looks OK at first glance.

Look at your server logs when it starts up and when it handles the request, you may find more there.

Hi, thanks for you time.
All in my project looks OK; Searching, i commented this line in my jps file <%@taglib uri="/struts-tags" prefix="s" %> and it works, but that isn't what i want, can you help me?

Can you confirm struts2-core-X.X.X.jar is available to your application and/or tomcat?

About standard-X.X.X.jar ? (taglibs)

Here is my pom.xml file for a working struts 2 application:

<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>classified</groupId>
	<artifactId>classified</artifactId>
	<packaging>war</packaging>
	<version>0.0.1-SNAPSHOT</version>
	<name>floow2 Maven Webapp</name>
	<url>http://maven.apache.org</url>

	<build>
		<plugins>
			<plugin>
				<groupId>org.mortbay.jetty</groupId>
				<artifactId>maven-jetty-plugin</artifactId>
				<version>6.1.7</version>
				<configuration>
					<connectors>
						<connector implementation="org.mortbay.jetty.nio.SelectChannelConnector">
							<port>8888</port>
							<maxIdleTime>30000</maxIdleTime>
						</connector>
					</connectors>
					<webAppSourceDirectory>${project.build.directory}/${project.artifactId}-${project.version}</webAppSourceDirectory>
					<contextPath>/</contextPath>
				</configuration>
			</plugin>
		</plugins>
	</build>

	<dependencies>
		<dependency>
			<groupId>org.apache.struts</groupId>
			<artifactId>struts2-core</artifactId>
			<version>2.3.24</version>
			<exclusions>
				<exclusion>
					<artifactId>javassist</artifactId>
					<groupId>javassist</groupId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-core</artifactId>
			<version>4.3.8.Final</version>
		</dependency>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-validator</artifactId>
			<version>5.1.3.Final</version>
		</dependency>
		<dependency>
			<groupId>org.hibernate.javax.persistence</groupId>
			<artifactId>hibernate-jpa-2.1-api</artifactId>
			<version>1.0.0.Final</version>
		</dependency>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-c3p0</artifactId>
			<version>4.3.9.Final</version>
		</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.0.5</version>
		</dependency>
		<dependency>
			<groupId>org.apache.xmlrpc</groupId>
			<artifactId>xmlrpc-common</artifactId>
			<version>3.1.3</version>
		</dependency>
		<dependency>
			<groupId>org.apache.xmlrpc</groupId>
			<artifactId>xmlrpc-client</artifactId>
			<version>3.1.3</version>
		</dependency>
		<dependency>
			<groupId>org.apache.xmlrpc</groupId>
			<artifactId>xmlrpc-server</artifactId>
			<version>3.1.3</version>
			<exclusions>
				<exclusion>
					<artifactId>servlet-api</artifactId>
					<groupId>javax.servlet</groupId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>log4j</groupId>
			<artifactId>log4j</artifactId>
			<version>1.2.17</version>
		</dependency>

		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.1.0</version>
		</dependency>

		<dependency>
			<groupId>javax.servlet.jsp.jstl</groupId>
			<artifactId>javax.servlet.jsp.jstl-api</artifactId>
			<version>1.2.1</version>
		</dependency>
		<dependency>
			<groupId>taglibs</groupId>
			<artifactId>standard</artifactId>
			<version>1.1.2</version>
		</dependency>

		<dependency>
			<groupId>commons-httpclient</groupId>
			<artifactId>commons-httpclient</artifactId>
			<version>3.1</version>
		</dependency>

		<dependency>
			<groupId>org.webjars</groupId>
			<artifactId>bootstrap</artifactId>
			<version>3.3.4</version>
		</dependency>

		<dependency>
			<groupId>org.webjars</groupId>
			<artifactId>jquery</artifactId>
			<version>2.1.3</version>
		</dependency>

		<dependency>
			<groupId>org.webjars</groupId>
			<artifactId>webjars-locator</artifactId>
			<version>0.21</version>
		</dependency>

		<dependency>
			<groupId>com.jgeppert.struts2.bootstrap</groupId>
			<artifactId>struts2-bootstrap-plugin</artifactId>
			<version>2.0.1</version>
		</dependency>

		<dependency>
			<groupId>javax.mail</groupId>
			<artifactId>javax.mail-api</artifactId>
			<version>1.5.2</version>
		</dependency>
		<dependency>
			<groupId>javax.activation</groupId>
			<artifactId>activation</artifactId>
			<version>1.1.1</version>
		</dependency>
		<dependency>
			<groupId>com.sun.mail</groupId>
			<artifactId>javax.mail</artifactId>
			<version>1.5.2</version>
		</dependency>

		<dependency>
			<groupId>org.apache.struts</groupId>
			<artifactId>struts2-json-plugin</artifactId>
			<version>2.3.20</version>
		</dependency>

		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-api</artifactId>
			<version>1.7.12</version>
		</dependency>

		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-simple</artifactId>
			<version>1.7.12</version>
		</dependency>
	</dependencies>

</project>

Here are the jar files in my WEB-INF/lib. Of course, you don't need all of them for your specific project:

activation-1.1.1.jar                           javax.servlet.jsp.jstl-api-1.2.1.jar
antlr-2.7.7.jar                                jboss-logging-3.1.3.GA.jar
asm-5.0.2.jar                                  jboss-logging-annotations-1.2.0.Beta1.jar
asm-commons-5.0.2.jar                          jboss-transaction-api_1.2_spec-1.0.0.Final.jar
asm-tree-5.0.2.jar                             jquery-2.1.3.jar
bootstrap-3.3.4.jar                            junit-3.8.1.jar
bootstrap-datepicker-1.4.0.jar                 log4j-1.2.17.jar
c3p0-0.9.2.1.jar                               mchange-commons-java-0.2.3.4.jar
classmate-1.0.0.jar                            merchantsdk-2.13.117.jar
commons-codec-1.2.jar                          mysql-connector-java-5.0.5.jar
commons-collections-3.1.jar                    ognl-3.0.6.jar
commons-fileupload-1.3.1.jar                   oro-2.0.8.jar
commons-httpclient-3.1.jar                     paypal-core-1.6.9.jar
commons-io-2.2.jar                             poi-3.11.jar
commons-lang-2.1.jar                           poi-ooxml-3.11.jar
commons-lang3-3.2.jar                          poi-ooxml-schemas-3.11.jar
commons-logging-1.1.jar                        slf4j-api-1.7.12.jar
dom4j-1.6.1.jar                                slf4j-simple-1.7.12.jar
freemarker-2.3.19.jar                          standard-1.1.2.jar
gson-2.2.2.jar                                 stax-api-1.0.1.jar
hibernate-c3p0-4.3.9.Final.jar                 struts2-bootstrap-plugin-2.0.1.jar
hibernate-commons-annotations-4.0.5.Final.jar  struts2-core-2.3.20.jar
hibernate-core-4.3.8.Final.jar                 struts2-json-plugin-2.3.20.jar
hibernate-jpa-2.1-api-1.0.0.Final.jar          validation-api-1.1.0.Final.jar
hibernate-validator-5.1.3.Final.jar            velocity-1.5.jar
imgscalr-lib-4.2.jar                           webjars-locator-0.21.jar
jackson-annotations-2.3.0.jar                  ws-commons-util-1.0.2.jar
jackson-core-2.3.3.jar                         xml-apis-1.0.b2.jar
jackson-databind-2.3.3.jar                     xmlbeans-2.6.0.jar
jandex-1.1.0.Final.jar                         xmlrpc-client-3.1.3.jar
javassist-3.18.1-GA.jar                        xmlrpc-common-3.1.3.jar
javax.mail-1.5.2.jar                           xmlrpc-server-3.1.3.jar
javax.mail-api-1.5.2.jar                       xwork-core-2.3.20.jar
javax.servlet-api-3.1.0.jar

I use maven to manage dependencies, struts core seems to need other jar files as well, mainly asm*.jar, commons-lang3*.jar, freemaker and ognl although I can't tell you for sure...

[Joe Ess]

A.J. Côté wrote:
I use maven to manage dependencies, struts core seems to need other jar files as well, mainly asm*.jar, commons-lang3*.jar, freemaker and ognl although I can't tell you for sure...

If one does not use Maven, the best way to find the correct Struts dependencies is here.

i commented this line in my jps file <%@taglib uri="/struts-tags" prefix="s" %> and it works,

How does this work unless you are not using Struts tags? If you comment out this line and you are using struts tags, you should get an error that the JSP could not be compiled.