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我有一个现有的Spring应用程序，它执行一些服务器端处理。我正在尝试为这个特定的应用程序创建一个webapp，并选择SpringMVC来为我的目的服务。将* -servlet.xml与applicationContext.xml混合使用
我创建了一个显示控制器如下：
@Controller
@RequestMapping("/items")
public class ItemDisplayController {
private static final Logger LOGGER = Logger.getLogger(ItemDisplayController.class);
private static final String ITEMS_REDIRECT = "redirect:/item/items";
@Autowired
private ItemDisplay itemDisplay;
@RequestMapping
public String listItems(ModelMap model) {
if (LOGGER.isInfoEnabled()) {
LOGGER.info("List all items");
}
List<ItemDetail> itemDetails = itemDisplay.getAllItems();
model.addAttribute("itemDetails",itemDetails);
return "items";
}
}
我已经有以下定义一个ApplicationContext文件：
<?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:mvc="http://www.springframework.org/schema/mvc"
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://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<bean id="props" class="org.springframework.beans.factory.config.PropertiesFactoryBean">
<property name="locations">
<array>
<value>classpath:item.properties</value>
<value>file:#{systemEnvironment['ITEM_HOME']}/item.properties</value>
<value>file:#{systemProperties['ITEM_HOME']}/item.properties</value>
</array>
</property>
<property name="ignoreResourceNotFound" value="true"/>
</bean>
<bean id="itemDisplay" class="com.acme.itemDisplayImpl">
<property name="itemDisplayDAO" ref="jdbcItemDisplayDAO"/>
</bean>
<bean id="jdbcItemDisplayDAO" class="com.acme.database.dao.JdbcItemDisplayDAO">
<property name="dataSource" ref = "dataSource"/>
</bean>
<bean id="realDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="#{props['itemds.jdbc.driver']}"/>
<property name="url"><value><![CDATA[#{props['itemds.jdbc.url']}]]></value></property>
<property name="username" value="#{props['itemds.username']}"/>
<property name="password" value="#{props['itemds.password']}"/>
<property name="testOnBorrow" value="#{props['itemds.test.on.borrow']}"/>
<property name="testWhileIdle" value="#{props['itemds.test.while.idle']}"/>
<property name="poolPreparedStatements" value="#{props['itemds.pool.prepared.statements']}"/>
<property name="validationQuery" value="#{props['itemds.validation.query']}"/>
<property name="validationQueryTimeout" value="#{props['itemds.validation.query.timeout']}"/>
<property name="timeBetweenEvictionRunsMillis" value="#{props['itemds.time.between.eviction.runs.millis']}"/>
<property name="maxActive" value="#{props['itemds.max.active']}"/>
<property name="maxIdle" value="#{props['itemds.max.idle']}"/>
<property name="initialSize" value="#{props['itemds.initial.size']}"/>
</bean>
<bean id="dataSource" class="org.springframework.jdbc.datasource.LazyConnectionDataSourceProxy">
<property name="targetDataSource" ref="realDataSource"/>
</bean>
</beans>
在我* servlet.xml中，我已经定义了视图解析器为如下：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
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://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<mvc:annotation-driven/>
<context:annotation-config/>
<context:component-scan base-package="com.acme.item"/>
<bean id="primaryViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
<property name="contentType" value="text/html; charset=UTF-8"/>
<property name="order" value="1"/>
</bean>
</beans>
而在web.xml中，我定义了上下文参数：
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app 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"
version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee">
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>items</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>items</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>
当我运行我的应用程序时，itemDisplay没有连线并且在调试器上显示为空值。
有人可以指出我可能在这里做错了吗？在理想的世界中，我会假设在控制器中使用@Autowired注释itemDisplay将有助于解析接口的实现。
* servlet.xml的全名是什么？ – soulcheck 2012-01-04 15:33:21
日志中有趣的事情？ – Bozho 2012-01-04 15:34:00
@soulcheck - 它是item-servlet.xml – 2012-01-04 15:51:17