Spring PortletMVC环境搭建

Spring PortletMVC环境搭建

1、在MyEclipse下建立一个web应用

2、导包

从解压后的 spring 文件夹中寻找 jstl.jar、standard.jar、spring.jar、spring-webmvc.jar、spring-webmvc-portlet.jar、commons-logging.jar拷贝到 WEB-INF/lib 目录下。

3、编辑web.xml

在web.xml文件中添加以下代码：

<!-- 设定Spring的根上下文 -->     <context-param>        <param-name>contextConfigLocation</param-name>        <param-value>/WEB-INF/applicationContext.xml</param-value>     </context-param>     <listener>        <listener-class>            org.springframework.web.context.ContextLoaderListener        </listener-class>     </listener>     <!-- 设定ViewRendererServlet -->     <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>         <!-- 设定加载一个Portlet的Servlet, 该配置为Pluto所需-->     <servlet>        <servlet-name>SpringTestPortlet1</servlet-name>        <servlet-class>            org.apache.pluto.container.driver.PortletServlet        </servlet-class>        <init-param>            <param-name>portlet-name</param-name>            <param-value>SpringTestPortlet1</param-value>        </init-param>        <load-on-startup>1</load-on-startup>     </servlet>     <servlet-mapping>        <servlet-name>SpringTestPortlet1</servlet-name>        <url-pattern>/PlutoInvoker/SpringTestPortlet1</url-pattern>     </servlet-mapping>  <jsp-config>        <taglib>            <taglib-uri>http://portals.apache.org/pluto</taglib-uri>            <taglib-location>/WEB-INF/tld/pluto.tld</taglib-location>        </taglib>     </jsp-config>

4、编辑Portlet.xml文件

 

<?xml version="1.0" encoding="UTF-8"?> <portlet-app     xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd"     version="2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd                         http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd">     <portlet>        <portlet-name>SpringTestPortlet1</portlet-name>        <display-name>SpringTestPortlet1</display-name>        <portlet-class>            org.springframework.web.portlet.DispatcherPortlet        </portlet-class>        <init-param>            <name>contextConfigLocation</name>            <value>/WEB-INF/springtest-portlet1.xml</value>        </init-param>        <supports>            <mime-type>text/html</mime-type>            <portlet-mode>view</portlet-mode>            <portlet-mode>edit</portlet-mode>            <portlet-mode>help</portlet-mode>        </supports>        <portlet-info>            <title>SpringTestPortlet1</title>        </portlet-info>     </portlet> </portlet-app>

5、编写相应的Java POJO类、jsp文件、Spring配置文件

Pojo类在此不再敷述，jsp文件中的开始标签部分如下：

 

<%@ page import="javax.portlet.*" contentType="text/html; charset=utf-8" %> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> <%@ taglib prefix="portlet" uri="http://java.sun.com/portlet"%> <%@ taglib prefix="spring" uri="http://www.springframework.org/tags"%> <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%> <portlet:actionURL var="actionURL" />

 

在 WEB-INF 下新建 applicationContext.xml 文件，内容如下：

 

<?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.xsd">     <!-- Default View Resolver -->     <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>     <!-- Default ExceptionHandler -->     <bean id="defaultExceptionHandler"         class="org.springframework.web.portlet.handler.SimpleMappingExceptionResolver">        <property name="order" value="10" />        <property name="defaultErrorView" value="error" />        <property name="exceptionMappings">            <props>               <prop key="javax.portlet.UnavailableException">                   unavailable               </prop>               <prop key="java.lang.Exception">error</prop>            </props>        </property>     </bean> </beans>

 

该配置文件中，定义了两个 Bean。其中第一个 Bean 定义了视图的默认解析方式，使用 JSP 作为视图（View)，到 /WEB-INF/jsp/ 目录下寻找 Jsp 文件，并且视图名称为 jsp 文件名的前缀。

在第二个 Bean 中，定义了异常处理方式。如果发生 javax.portlet.UnavailableException 异常，则呈现 unavailable 视图，即 unavailable.jsp 文件；如果发生其它的 java.lang.Exception 异常，则呈现 error 视图，即 error.jsp 文件。

在 WEB-INF 下新建 PortletSpringTestPortlet1 的 Spring 上下文配置文件 springtest-portlet1.xml 如下：

 

<?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.xsd">     <bean         class="org.springframework.web.portlet.handler.PortletModeHandlerMapping">        <property name="portletModeMap">            <map>               <entry key="view" value-ref="viewController" />            </map>        </property>     </bean>     <bean id="viewController"        class="org.springframework.web.portlet.mvc.SimpleFormController">        <property name="commandClass"            value="springportal.command.AddressBook" />        <property name="commandName" value="addressBook" />        <property name="formView" value="addressInput" />        <property name="successView" value="result" />     </bean> </beans>

 

该上下文根据 Portlet 模式分配控制器，由 Bean 定义可知，仅仅定义了 view 模式的控制器，edit 和 help 模式都没有进行定义。

在 View 模式的控制器 viewController 中，定义了 commandClass 和 commandName 来保存用户输入的表单数据，addressInput 视图（addressInput.jsp）为输入表单，result 视图（result.jsp）呈现表单提交结果。

 

6、遇到的问题

java.lang.ClassCastException:org.springframework.web.servlet.support.JstlUtils$SpringLocalizationContext

I had the same issue with Pluto current bundle distribution 1.1.6. The ClassCastException is actually from Pluto's default theme jsp. It's trying to cast a org/springframework/web/servlet/support/JstlUtils$SpringLocalizationContext into a java/lang/String . This is due to that the JSTL implementation doesn't recognize SpringLocalizationContext as a LocalizationContext instance though SpringLocalizationContext surely implements the interface. The root cause is that two classes are loaded from different classloader thus the instanceof check failed. Solution: move the jstl-1.0.6.jar and standard-1.0.6.jar under pluto-1.1.6"webapps"pluto"WEB-INF"lib into pluto-1.1.6"shared"lib  Note: do not include these 2 jar files in your portlet application (war file). ——引自http://forum.springsource.org/showthread.php?t=57816

解决方法：将pluto-2.0"webapps"pluto"WEB-INF"lib下的jstl.jar和standard.jar移动到pluto-2.0"lib目录下

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