Picking up Tomcat's Context.xml parameters via SpEL - spring

Deploying war to Apache Tomcat 8 the following way.
Placing myApp.xml under $CATALINA_HOME/conf/[enginename]/[hostname]/
with the following contents:
<Context>
<Parameter name="myApp_configs" value="file:/the/path/to/configs/folder"
type="java.lang.String" override="false"/>
</Context>
B.t.w. I do not place any kind of Context.xml into war.
Then copying myApp.war to $CATALINA_HOME/webapps
This is my web.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<display-name>service</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>WEB-INF/beans.xml</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<servlet>
<servlet-name>CXFServlet</servlet-name>
<display-name>CXF Servlet</display-name>
<servlet-class>
org.apache.cxf.transport.servlet.CXFServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>CXFServlet</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>
And this way I try loading properties-file in beans.xml (referenced in web.xml above).
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jaxrs="http://cxf.apache.org/jaxrs"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://cxf.apache.org/jaxrs http://cxf.apache.org/schemas/jaxrs.xsd">
<!-- Imported resources for cxf -->
<import resource="classpath:META-INF/cxf/cxf.xml" />
<import resource="classpath:META-INF/cxf/cxf-extension-jaxrs-binding.xml" />
<import resource="classpath:META-INF/cxf/cxf-servlet.xml" />
<bean class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor"/>
<!--context:property-placeholder
location="#{contextParameters['myApp_configs']}/myApp.properties"/-->
<bean id="configurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location"
value="#{contextParameters['myApp_configs']}/myApp.properties"/>
</bean>
...other lines follow here...
</beans>
However I am getting following error upon beans loading:
Field or property 'contextParameters' cannot be found on object of type 'org.springframework.beans.factory.config.BeanExpressionContext'
Could you help me understand the error and propose a fix so that I can access Context-defined parameters?
P.S. I have not put here, but I also have some <Environment>-nodes in Context, and they are successfully accessible via JNDI in other places.

So as we were not able to solve the root cause - why contextParameters bean is not available, the following workaround (using ol' syntax) took place:
<bean id="myConfigsLocation"
class="org.springframework.web.context.support.ServletContextParameterFactoryBean">
<property name="initParamName" value="myApp_configs" />
</bean>
<context:property-placeholder
location="#{myConfigsLocation}/myApp.properties" />
And it worked successfully.

Related

almost identical webapps behave differently in serving static content

I'm having a 'weird' issue in serving static content from my webapp using a Spring-Hibernate setup.
I have a (small) webapp that uses the DispatcherServlet to serve any url like this: /coverpage/* .The default servlet mapping is set to /static/*
Example:
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>/static/*</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/coverpage/*</url-pattern>
</servlet-mapping>
In my jsp's the static content (images/js/css) is written like this:
<spring:url value="/static/styles/js/jquery-1.4.2.min.js" />
I have 4 pages in the webapp: index.jsp, new.jsp, error.jsp and includes.jsp (which isn't an actual page, duh) and a mapping for /process which returns PDF content or validation-errors when entered incorrect data.
This setup seems to work fine in my webapp.
Now for the weird part:
I have deployed the same webapp on another Tomcat instance and changed the ports so they can run simultaneously and now the references to static content are only working half the time. Only the mapping for /new (aka new.jsp) can find the static content. The rest fails to load it.
Differences between the 2 instances
Tomcat version (original runs on 6.0.29, second instance runs on 6.0.33)
Tomcat ports
Database connection (original goes to PROD db, second instance goes to TEST db - both databases are the same)
Here's my web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Coverpage creator</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>/static/*</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/coverpage/*</url-pattern>
</servlet-mapping>
<filter>
<filter-name>SetUTF8EncodingFilter</filter-name>
<filter-class>be.coverpagecreator.filter.SetUTF8EncodingFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>SetUTF8EncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<security-constraint>
<web-resource-collection>
<web-resource-name>Coverpage creator</web-resource-name>
<url-pattern>/coverpage/*</url-pattern>
</web-resource-collection>
<auth-constraint>
<role-name>cpcreator</role-name>
</auth-constraint>
</security-constraint>
<login-config>
<auth-method>BASIC</auth-method>
<realm-name>Coverpage creator</realm-name>
</login-config>
<security-role>
<description>The role that is required to create coverpages</description>
<role-name>cpcreator</role-name>
</security-role>
</web-app>
And dispatcher-servlet config
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<import resource="application-context.xml"/>
<mvc:annotation-driven />
<mvc:interceptors>
<bean name="openSessionInViewInterceptor" class="org.springframework.orm.hibernate3.support.OpenSessionInViewInterceptor">
<property name="sessionFactory" ref="sessionFactory" />
<property name="singleSession" value="false" />
</bean>
</mvc:interceptors>
<context:component-scan base-package="be.coverpagecreator" />
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
<bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
<property name="defaultEncoding" value="UTF-8" />
<property name="useCodeAsDefaultMessage" value="false" />
<property name="basenames">
<list>
<value>/WEB-INF/messages/global</value>
<value>/WEB-INF/messages/messages</value>
</list>
</property>
</bean>
<bean id="localeResolver" class="org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver" />
</beans>
The problem was with the Tomcat version. I tried to run the second instance on a newly downloaded 6.0.29 Tomcat instead 6.0.33 and it seems to work fine. I'm gonna go through the Tomcat changelogs to try and find what caused this... If I find anything, I'll report back here.

Apache CXF and Spring but no WSDL (recursive links)

I have written a small sample web service, using Apache CXF (CXFServlet) and Spring (ContextLoaderListener) I have registered the CXFServlet to listen on the / url. And I am declaring my beans in beans.xml.
When I start the web service with tomcat and go to the service url, then I can see the web service definition (e.g. methods, endpoint, wsdl link). But the problem is that when I click on the wsdl link, then I do not get the WSDL file, but instead I am recursively forwarded back to the same page, but each time the name of the web service address is appended:
localhost:8080/Test/accountEndpoint
localhost:8080/Test/accountEndpointaccountEndpoint
localhost:8080/Test/accountEndpointaccountEndpointaccountEndpoint
The service is a "code-first" service which a #WebService annotated java interface and a implementation class.
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<display-name>Test</display-name>
<servlet>
<servlet-name>cxf</servlet-name>
<display-name>cxf</display-name>
<description>Apache CXF Endpoint</description>
<servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>cxf</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>60</session-timeout>
</session-config>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>WEB-INF/beans.xml</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
</web-app>
beans.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jaxws="http://cxf.apache.org/jaxws"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd">
<import resource="classpath:META-INF/cxf/cxf.xml" />
<import resource="classpath:META-INF/cxf/cxf-servlet.xml" />
<import resource="classpath:META-INF/cxf/cxf-extension-soap.xml" />
<bean id="account" class=".....AccountImpl" />
<jaxws:endpoint id="accountEndpoint" implementor="#account"
address="accountEndpoint" />
</beans>
As I understand it, CXF should automatically generate the WSDL file and provide it to me, when I click on the link, so I do not understand why that is not happening.
Specify the address this way, with a leading slash:
<jaxws:endpoint id="accountEndpoint" implementor="#account"
address="/accountEndpoint" />
Sorry, making a change, the above is not correct:
You are right, I am able to replicate the behavior with mapping CXFServlet to the "default" servlet path mapping of /, the fix that I could get to work for myself is to map it to /* instead:
<servlet-mapping>
<servlet-name>cxf</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>

What are the configurations or xml files to run a basic Spring MVC application?

I need to know the basic XML configuration files to put in my Web-inf folder, like web.XML, and where to write view resolver bean.
How do I register the controller?
When I run my application I get the error "could not open servlet context resource". What is servlet context resource and where do I mention it?
My web.xml is:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>
jsp/index.jsp
</welcome-file>
</welcome-file-list>
</web-app>
My springmvc is:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
<bean name="/hello_world.html" class="springmvc.web.HelloWorldController"/>
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
I have these two xml files only.
I know I need a spring configuration file too. I don't know what details I need to put in that.
If you use STS (Spring Tool Suite) then you can create a Spring Template Project.
(New Project/SpringSource Tool Suite/Spring Template Project/-Spring MVC Project)
This contains all the files you need to start.

Java Spring address of page

I am really confused how does the address of my spring application come from.
I followed the tutorial, but now I am trying to change the address, but I can't find the spot.
At the moment address is this : http://localhost:8080/HelloWorld/
Where can I change HelloWorld to something else?
I will provide you with any code you need. I have two conf files : web.xml, spring-servlet.xml, but there is nothing in them that contains HelloWorld.
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="hello.spring3.controller" />
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp" />
</bean>
</beans>
and web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="spring3" version="3.0">
<display-name>Spring display name</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
</web-app>
Actually this is not issue unless you deploy it on production environament.
When you deploy it there you should create new HOST in TOMCAT_HOME/conf/server.xml file
it should look something like:
<Host name="www.mysite.com" appBase="www"
unpackWARs="true" autoDeploy="true"
xmlValidation="false" xmlNamespaceAware="false">
</Host>
Second option is to deploy your war file in ROOT directory, but in my opinion the first option is more suitable.
Update: No problem, If you are using eclipse, please click right mouse button on your project, Select Properties - > Web Project Settings.
and change name of your "HelloWorld" directory.
It's the name of your war file.

Tomcat unable to find jsp in war file

I recently switched one of my static html files to a Spring controller that uses a JSP to render its view. I use jetty to test locally and local testing shows the page rendering fine. Upon deploying to our test server, which uses Tomcat 6.0.26, I get the following exception:
javax.servlet.ServletException: Could not get RequestDispatcher for [/WEB-INF/jsp/index.jsp]: check that this file exists within your WAR
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:219)
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1060)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:798)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
I have confirmed that the JSP exists in the war I deploy and the exploded directory that tomcat creates upon deployment. Here is what my web.xml and front-controller-servlet.xml files look like respectively (web.xml shorted slightly):
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="
http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<!-- Initialize the Spring DispatcherServlet -->
<servlet>
<servlet-name>gwtrpc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- Map the DispatcherServlet to only intercept RPC requests -->
<servlet-mapping>
<servlet-name>gwtrpc</servlet-name>
<url-pattern>*.gwtrpc</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>front-controller</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>front-controller</servlet-name>
<url-pattern>/search.html</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>front-controller</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
front-controller-servlet.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:security="http://www.springframework.org/schema/security"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/security
http://www.springframework.org/schema/security/spring-security-3.0.xsd">
<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="/search.html">indexController</prop>
</props>
</property>
</bean>
<bean id="indexController" class="com.company.search.web.server.controller.IndexController" />
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp"/>
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
</bean>
</beans>
The difference between my dev instance and test instance is that the dev instance is deployed to the root (localhost/search.html) whereas the test instance is deployed to server.com/appname/search.html. Appname is the name of the *.war file I deploy. I have tried adding the full path as the prefix to the jps files (/appname/WEB-INF/jsp/) and a number of other combinations with no luck. I have verified that the jsp-api jars are in the tomcat lib directory. My tomcat install is the basic/default install.
The issue was caused by the default jsp servlet being removed from the default web.xml of the tomcat install. This had been done by a former co-worker and not to my knowledge. Replacing the test server's web.xml with the default web.xml (which included url-patterns/servlets for handling jsp files) corrected the issue.

Resources