问题描述
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我正在用Java构建Web应用程序。试图集成Spring Web MVC 3.0框架。但是我什至不能简单地显示页面。我正在使用NetBeans 7.0和Tomcat 6.0。
这是我所拥有的:
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_2_5.xsd\"
xsi:schemaLocation=\"http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd\"
id=\"WebApp_ID\" version=\"2.5\">
<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>
<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>*.htm</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>redirect.jsp</welcome-file>
</welcome-file-list>
</web-app>
dispatcher-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: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=\"forum.web\" />
<!--
Most controllers will use the ControllerClassNameHandlerMapping above,but
for the index controller we are using ParameterizableViewController,so we must
define an explicit mapping for it.
-->
<bean id=\"urlMapping\" class=\"org.springframework.web.servlet.handler.SimpleUrlHandlerMapping\">
<property name=\"mappings\">
<props>
<prop key=\"index.htm\">indexController</prop>
</props>
</property>
</bean>
<!-- org.springframework.web.servlet.view.InternalResourceViewResolver -->
<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>
<!--
The index controller.
-->
<bean name=\"indexController\"
class=\"org.springframework.web.servlet.mvc.ParameterizableViewController\"
p:viewName=\"index\" />
</beans>
控制器:
package forum.web;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
/**
*
* @author
*/
@Controller
public class RegistrationController
{
@RequestMapping(\"/registration.htm\")
public ModelAndView registrationWindow()
{
return new ModelAndView(\"registration\");
}
}
XHTML页面:
<tr id=\"log_reg\">
<td>
<a href=\"login.htm\"> Log in </a>
</td>
<td></td>
<td>
<a href=\"registration.htm\"> Register </a>
</td>
</tr>
运行此命令,我看到索引页面:
http://localhost:8088/Forum/index.htm
在页面上,我单击链接,打开打开注册页面。但相反,我看到HTTP 404错误。
链接:
http://localhost:8088/Forum/registration.htm
在NetBeans上发现错误:
18-Jun-2011 14:45:19 org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler
INFO: Mapped URL path [/index.htm] onto handler [org.springframework.web.servlet.mvc.ParameterizableViewController@1fb0fc2]
18-Jun-2011 14:45:20 org.springframework.web.servlet.FrameworkServlet initServletBean
INFO: FrameworkServlet \'dispatcher\': initialization completed in 1279 ms
18-Jun-2011 14:45:20 org.apache.catalina.core.StandardContext start
INFO: Container org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/Forum] has already been started
18-Jun-2011 14:45:35 org.springframework.web.servlet.dispatcherServlet noHandlerFound
WARNING: No mapping found for HTTP request with URI [/Forum/registration.htm] in dispatcherServlet with name \'dispatcher\'
18-Jun-2011 14:51:53 org.springframework.web.servlet.dispatcherServlet noHandlerFound
WARNING: No mapping found for HTTP request with URI [/Forum/registration.htm] in dispatcherServlet with name \'dispatcher\'
我无法消除造成这些错误的原因。我认为代码看起来不错。这次我尝试了很多事情。
有什么帮助吗?
最好的祝福
解决方法
可能是因为同时使用了注释映射和SimpleUrlHandlerMapping。
尝试添加bean:
<bean id=\"handlerMapping\" class=\"org.springframework.web.servlet.mvc.annotat ion.DefaultAnnotationHandlerMapping\">
</bean>
并将其作为处理程序添加到您的urlMapping bean中:
<property name=\"interceptors\">
<list>
<ref bean=\"handlerMapping\"/>
</list>
</property>
仅使用其中之一比较容易,尤其是基于注释的控制器。在这种情况下,您必须扔掉urlMapping bean,而不是indexController bean,使用简单的类,例如:
@Controller
class PagesCtrl {
@RequestMapping(\"/index.htm\")
ModelAndView index() {
ModelAndView mav = new ModelAndView(\"index\")
return mav
}
}