Problem with simple spring MVC portlet

[Johannes Hipp, modificado 14 Anos atrás.]

Hello,

I try to deploy a simple spring portlet in ext (I can't use Plugins SDK...).

Edit:

It looks so:


ext-impl/src:
Package: com.robisoft.springsample.controllers

HelloSpringController.java

package com.robisoft.springsample.controllers;

import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;

import org.springframework.web.portlet.ModelAndView;
import org.springframework.web.portlet.mvc.ParameterizableViewController;

public class HelloSpringController extends ParameterizableViewController{	
	@Override
	protected ModelAndView handleRenderRequestInternal(RenderRequest request, RenderResponse response) 
			throws Exception {      
	  return( new ModelAndView(this.getViewName()));
	}
}

ext-lib/portal:
- commons-logging.jar
- spring-webmvc-portlet.jar
- spring-webmvc.jar
- spring.jar

ext-web-docroot-html-portlet-ext-hellospring:

init.jsp

<%@ taglib uri="http://java.sun.com/portlet" prefix="portlet" %>
<portlet:defineobjects />

<style type="text/css">
   <%@ include file="/css/style.css" %>
</style>

view.jsp

<%@ include file="init.jsp" %>

<div class="spring-time">Hello World, from Spring Source<br>
<a href="http://springsource.com" target="_blank"><img src="/images/springSource.png" alt="Spring Source"></a>  
</div> 

ext-web-docroot-WEB-INF/context
applicationContext.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" xsi:schemaLocation="http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans-2.0.xsd" />

hellospring-portlet.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" xsi:schemalocation="http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

	<bean id="HelloSpringController" class="com.robisoft.springsample.controllers.HelloSpringController">	
     	<property name="viewName" value="view" />
    </bean>

	<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="cache" value="true" />
		<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
		<property name="prefix" value="/html/portlet/ext/hellospring/" />
		<property name="suffix" value=".jsp" />
	</bean>

	<bean id="portletModeHandlerMapping" class="org.springframework.web.portlet.handler.PortletModeHandlerMapping">
		<property name="portletModeMap">
			<map>
				<entry key="view"><ref local="HelloSpringController" /></entry>
			</map>
		</property>
	</bean>	
	


    
 </beans>

 

portlet-ext.xml

	<portlet>
		<portlet-name>hellospring</portlet-name>
		<display-name>Hello From Spring</display-name>
		<portlet-class>org.springframework.web.portlet.DispatcherPortlet</portlet-class>
		<init-param>
			<name>contextConfigLocation</name>
			<value>/WEB-INF/context/hellospring-portlet.xml</value>
		</init-param>
		<expiration-cache>0</expiration-cache>
		<supports>
			<mime-type>text/html</mime-type>
		</supports>
		<portlet-info>
			<title>Hello Spring</title>
			<short-title>Hello Spring</short-title>
			<keywords>hello,spring,sample</keywords>
		</portlet-info>
		<security-role-ref>
			<role-name>administrator</role-name>
		</security-role-ref>
		<security-role-ref>
			<role-name>guest</role-name>
		</security-role-ref>
		<security-role-ref>
			<role-name>power-user</role-name>
		</security-role-ref>
		<security-role-ref>
			<role-name>user</role-name>
		</security-role-ref>
	</portlet>

liferay-portlet-ext.xml

	<portlet>
		<portlet-name>hellospring</portlet-name>
		<use-default-template>true</use-default-template>
		<restore-current-view>true</restore-current-view>
		<private-request-attributes>false</private-request-attributes>
		<private-session-attributes>false</private-session-attributes>
		<render-weight>1</render-weight>
	</portlet>

web.xml

<!--?xml version="1.0" encoding="UTF-8"?-->


<web-app>
  
	<!-- Resources bundle base class -->
     <context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>
			/WEB-INF/context/applicationContext.xml
		</param-value>
	</context-param>  
  
  
<!-- Servlets -->  
	<servlet>
		<servlet-name>ViewRendererServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.ViewRendererServlet</servlet-class>
		<load-on-startup>1</load-on-startup>	
	</servlet>

	<servlet-mapping>
		<servlet-name>ViewRendererServlet</servlet-name>
		<url-pattern>/WEB-INF/servlet/view</url-pattern>
	</servlet-mapping>



</web-app>

Thank you!

Best regards,
Johannes

[Sebastian Konkol, modificado 14 Anos atrás.]

Hi Johannes,
Are you deploying portlet or application...???? look at the lines:

<servlet>
    <servlet-name>springmvc</servlet-name>
     <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
     <load-on-startup>1</load-on-startup>
  </servlet>

Best regards
Sebastian Konkol

[Johannes Hipp, modificado 14 Anos atrás.]

Hi Sebastian,

thanks for reply! I'm deploying a portlet, so this should be right or?

[Sebastian Konkol, modificado 14 Anos atrás.]

Hi Johannes,
You might consider modifying following web.xml:

<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/j2ee/web-app_2_4.xsd" xsi:schemalocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">

	<display-name>w2i-certificates</display-name> 
         <context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>
			/WEB-INF/context/applicationContext.xml
		</param-value>
	</context-param>

	<!-- Listeners -->
	<listener>
		<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
	</listener>
	<listener>
		<listener-class>
			org.springframework.web.context.ContextLoaderListener
		</listener-class>
	</listener> 
	<listener>
		<listener-class>
			com.liferay.portal.kernel.servlet.PortletContextListener
		</listener-class>
	</listener>
	<listener>
		<listener-class>flex.messaging.HttpFlexSession
		</listener-class>
	</listener>
	


	<!-- Servlets -->
	<servlet>
		<servlet-name>ViewRendererServlet</servlet-name>
		<servlet-class>
			org.springframework.web.servlet.ViewRendererServlet
		</servlet-class>

	</servlet>
 
	<servlet>
		<servlet-name>myprog</servlet-name>
		<servlet-class>com.liferay.portal.kernel.servlet.PortletServlet
		</servlet-class>
		<init-param>
			<param-name>portlet-class</param-name>
			<param-value>org.springframework.web.portlet.DispatcherPortlet
			</param-value>
		</init-param>
	</servlet>
	 

	<servlet-mapping>
		<servlet-name>ViewRendererServlet</servlet-name>
		<url-pattern>/WEB-INF/servlet/view</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name> myprog</servlet-name>
		<url-pattern>/w2icertificates/*</url-pattern>
	</servlet-mapping> 
	  
	 
	 
	 
</web-app>

At least check differences to see what is wrong ;-)

Best regards
Sebastian Konkol

[Johannes Hipp, modificado 14 Anos atrás.]

Hi Sebastian,

thanks again

Now I've got another problem, seems there is a problem with my listener...

following error:

Error creating bean with name 'com.liferay.portal.kernel.captcha.CaptchaUtil' 
defined in class path resource [META-INF/util-spring.xml]: Cannot create inner bean 'com.liferay.portal
.captcha.CaptchaImpl#79e328' of type [com.liferay.portal.captcha.CaptchaImpl] while setting bean property 'captcha'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.liferay.por
tal.captcha.CaptchaImpl#79e328' defined in class path resource [META-INF/util-spring.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.liferay
.portal.captcha.CaptchaImpl]: Constructor threw exception; nested exception is java.lang.NullPointerException

any ideas?

[Sebastian Konkol, modificado 14 Anos atrás.]

Hi Johannes,
Looks like constructor of class: com.liferay.portal.captcha.CaptchaImpl is throwing NullPointerException. Don't have idea why - how are you initializing this bean?

Best regards
Sebastian Konkol

[Johannes Hipp, modificado 14 Anos atrás.]

Hmm good question, I don't know why he's initializing this bean... I don't need this bean...

[Sebastian Konkol, modificado 14 Anos atrás.]

Hi Johannes,
Can you pack your portlet source and attach it so I can check what could that be?

Best regards
Sebastian Konkol

[Johannes Hipp, modificado 14 Anos atrás.]

Hi Sebastion,

that's very nice! I am developing in ext, so I hope I haven't forgotten something...

Thank you very much in advance!

Best regards,
Johannes

[Thomas Berg, modificado 14 Anos atrás.]

Hi Johannes,

Controller:
I see nothing wrong with your controller class.

Libraries:
Looks like you've got the required libs.

In portlet-ext.xml you need to add the following (within <portlet></portlet>):

<init-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/springmvc-servlet.xml</param-value>
</init-param>

or you can rename the file to "springmvc-portlet.xml"

By default, Spring will look for a file named [portlet-name]-portlet.xml in the WEB-INF folder of your webapp. But if you explicitly define it like above, the name and location can be anything you like.

Although I'm not sure that this is necessary, I think you should place the contents of your current spring-servlet.xml into /WEB-INF/applicationContext.xml. Either way, you have to change the value of the parameters to reflect the location of your jsp's :

<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
    <property name="prefix" value="/html/portlet/springmvc/jsp/" /> <!--
    <property name="suffix" value=".jsp"/>
</bean>
</code></pre><br /><br />If you have more than one portlet in the ext-environment that uses Spring, I guess you need a common folder for the jsp&#39;s that can be defined in the above property.<br /><br />Put the following in your <strong>web.xml</strong> :<br /><br /><pre><code><context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/applicationContext.xml</param-value> <!-- Default location so not necessary -->


<!-- Required for Spring portlets to delegate view rendering. -->
<servlet>
    <servlet-name>ViewRendererServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.ViewRendererServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>ViewRendererServlet</servlet-name>
    <url-pattern>/WEB-INF/servlet/view</url-pattern>
</servlet-mapping></bean>

The following is an example of what could be in your [portlet-name]-portlet.xml file :

<!-- Controllers -->
<bean id="helloWorldController" class="com.ext.portlet.springmvc.HelloWorldController" />

<!-- Handler Mappings -->
<bean id="portletModeHandlerMapping" class="org.springframework.web.portlet.handler.PortletModeHandlerMapping">
    <property name="order" value="20" />
    <property name="portletModeMap">
        <map>
            <entry key="view"><ref bean="helloWorldController" /></entry>
        </map>
    </property>
</bean>

<!-- Exceptions Handlers -->
<bean id="defaultExceptionHandler" parent="defaultExceptionHandlerTemplate" />

I might have forgotten something so feel free to ask again if you still have problems

(Edit: Added the content of [portlet-name]-portlet.xml)

Regards Thomas

[Johannes Hipp, modificado 14 Anos atrás.]

Edit:

Hey, first I wanna thank you both! I removed the listener in the web.xml and changed the things you told me Thomas (see first post).

When do I need a listener in the web.xml?

Best regards,
Johannes

[Michael Toback, modificado 13 Anos atrás.]

Johannes et al,

I have taken your source and, by following the thread got Liferay to come up without errors.

Where I fall down is trying to add the portlet to a page. The new portlet is not getting added to the list of applications in the category.samples category. All I can "see" when I try to add applications are the four applications defined in the portal liferay-display.xml file. I suspect this is some deficiency in the way I am registering the portlets.

Let me ask these questions:

liferay-display.xml - this is essentially the same file as what is in the portal application, with new portlet added as:

	<category name="category.sample">
		<portlet id="hellospring" />
	</category>

portlet-ext.xml - this file contains the definition of the new portlet as:

	<portlet>
		<portlet-name>hellospring</portlet-name>
		<display-name>Hello From Spring</display-name>
		<portlet-class>org.springframework.web.portlet.DispatcherPortlet</portlet-class>
		<init-param>
			<name>contextConfigLocation</name>
			<value>/WEB-INF/context/hellospring-portlet.xml</value>
		</init-param>
		<expiration-cache>0</expiration-cache>
		<supports>
			<mime-type>text/html</mime-type>
		</supports>
		<portlet-info>
			<title>Hello Spring</title>
			<short-title>Hello Spring</short-title>
			<keywords>hello,spring,sample</keywords>
		</portlet-info>
		<security-role-ref>
			<role-name>administrator</role-name>
		</security-role-ref>
		<security-role-ref>
			<role-name>guest</role-name>
		</security-role-ref>
		<security-role-ref>
			<role-name>power-user</role-name>
		</security-role-ref>
		<security-role-ref>
			<role-name>user</role-name>
		</security-role-ref>
	</portlet>

liferay-portlet-ext.xml contains only the custom portlets as:

	<portlet>
		<portlet-name>hellospring</portlet-name>
		<use-default-template>true</use-default-template>
		<restore-current-view>true</restore-current-view>
		<private-request-attributes>false</private-request-attributes>
		<private-session-attributes>false</private-session-attributes>
		<render-weight>1</render-weight>
	</portlet>

finally hellospring-portlet.xml is a file in the context directory that defines the spring context of the portlet:

<!--?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-2.0.xsd">

	<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="cache" value="true" />
		<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
		<property name="prefix" value="/jsp/" />
		<property name="suffix" value=".jsp" />
	</bean>

	<bean id="portletModeHandlerMapping" class="org.springframework.web.portlet.handler.PortletModeHandlerMapping">
		<property name="portletModeMap">
			<map>
				<entry key="view"><ref local="helloSpringController" /></entry>
			</map>
		</property>
	</bean>	
	
    <bean id="helloSpringController" class="com.robisoft.springsample.controllers.HelloSpringController">	
      <property name="viewName" value="view" />
    </bean>
 </beans>

So what am I doing wrong?

Michael Toback

[asif aftab, modificado 8 Anos atrás.]

Thanks, helpful.