java - 我的 Spring MVC 配置有什么问题？

Question

我正在尝试设置和学习如何使用 Spring MVC 开发 Web 应用程序。我一直在尝试遵循许多教程，但我的应用程序似乎不想工作。

环境：Eclipse、m2e-wtp、spring、整个shebang

上下文根是 BidApp。

我有一个控制器：

@Controller
public class AuctionController {    
    @RequestMapping("/hello")
    public ModelAndView helloWorld() {
        String message = "Hello World, Spring 3.0!";
        return new ModelAndView("hello", "message", message);
    }
}

我在 WEB-INF 中的 web.xml：

<!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>BidApp</display-name>
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet
        </servlet-class>
        <load-on-startup>1</load-on-startup>
         <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/spring-servlet.xml</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>*.*</url-pattern>
    </servlet-mapping>
</web-app>

我的 spring-servlet.xml 也在 WEB-INF

<?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:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
        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">

    <!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->

    <!-- Scans within the base package of the application for @Components to configure as beans -->
    <!-- @Controller, @Service, @Configuration, etc. -->
    <context:component-scan base-package="com.bidapp.controllers" />

    <!-- Enables the Spring MVC @Controller programming model -->
    <mvc:annotation-driven />
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>
</beans>

我启动应用程序并导航到http://localhost:8080/BidApp/hello，它给了我一个 404。我的 xml 文件是在错误的位置还是我缺少一些配置参数？有没有一个好地方可以让我查看配置 Spring 应用程序的所有可用参数。spring 框架参考，除非我读错了，没有帮助。

编辑：

Tomcat logs:
Nov 18, 2012 10:07:35 PM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jre7\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\php\;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;c:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\;c:\Program Files (x86)\Microsoft SQL Server\100\DTS\Binn\;C:\Program Files\MATLAB\R2010b\runtime\win64;C:\Program Files\MATLAB\R2010b\bin;C:\Users\Soto\Desktop\android-sdk-windows\tools;C:\Program Files (x86)\Common Files\Teleca Shared;C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\;C:\Program Files\TortoiseSVN\bin;C:\Program Files (x86)\QuickTime\QTSystem\;C:\Program Files\TortoiseHg\;C:\Program Files\MySQL\MySQL Server 5.5\bin;C:\MinGW\bin;C:\Program Files\nodejs\;C:\Ruby193\bin;C:\Program Files (x86)\SSH Communications Security\SSH Secure Shell;C:\Users\Soto\Desktop\android-sdk-windows\tools;C:\MinGW\bin;C:\Users\Soto\AppData\Roaming\npm\;C:\apache-maven-3.0.4\bin;C:\Program Files\Java\jdk1.7.0_02\bin;;.
Nov 18, 2012 10:07:35 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.j2ee.server:BidApp' did not find a matching property.
Nov 18, 2012 10:07:35 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-bio-8080"]
Nov 18, 2012 10:07:35 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
Nov 18, 2012 10:07:35 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 594 ms
Nov 18, 2012 10:07:36 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
Nov 18, 2012 10:07:36 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.22
Nov 18, 2012 10:07:36 PM org.apache.catalina.core.StandardContext checkUnusualURLPattern
INFO: Suspicious url pattern: "*.*" in context [/BidApp] - see section SRV.11.2 of the Servlet specification
Nov 18, 2012 10:07:36 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring FrameworkServlet 'dispatcher'
Nov 18, 2012 10:07:36 PM org.springframework.web.servlet.FrameworkServlet initServletBean
INFO: FrameworkServlet 'dispatcher': initialization started
Nov 18, 2012 10:07:36 PM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing WebApplicationContext for namespace 'dispatcher-servlet': startup date [Sun Nov 18 22:07:36 EST 2012]; root of context hierarchy
Nov 18, 2012 10:07:36 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from ServletContext resource [/WEB-INF/spring-servlet.xml]
Nov 18, 2012 10:07:36 PM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@6ad89088: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping#0,org.springframework.format.support.FormattingConversionServiceFactoryBean#0,org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter#0,org.springframework.web.servlet.handler.MappedInterceptor#0,org.springframework.web.servlet.view.InternalResourceViewResolver#0]; root of factory hierarchy
Nov 18, 2012 10:07:37 PM org.springframework.web.servlet.FrameworkServlet initServletBean
INFO: FrameworkServlet 'dispatcher': initialization completed in 739 ms
Nov 18, 2012 10:07:37 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-8080"]
Nov 18, 2012 10:07:37 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-bio-8009"]
Nov 18, 2012 10:07:37 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 1395 ms

Answer 1

您必须像这样使用 url 模式

<url-pattern>/</url-pattern>

当您添加<mvc:annotation-driven />到配置中时，它会替换默认的一组处理程序映射和处理程序适配器，而这些默认值就是处理旧式控制器的那些。

我认为您应该了解组件扫描和注释配置之间的区别。如果您使用扫描，那么您不需要使用配置。 <context:annotation-config> 与 <context:component-scan> 之间的区别

请使用您的旧代码执行并删除<mvc:annotation-driven />

（通常）/ 即使没有 mvcdefault servlethandler 也可以工作

Answer 2

调度程序的映射无效。只接受 1 个通配符。

因此，将匹配 url 的调度程序更改为类似/*

如此/*.do或/*.htm *.html但不是/*.jsp因为tomcat已经映射了.jsps

如果你想要一些 REST url，我可以建议使用UrlRewriteFilter吗？它使用起来非常简单，并且可以以与使用 apache 重写过滤器的方式非常相似的方式使用。

Answer 3

将 url-pattern 更改为<url-pattern>/</url-pattern>是不够的。在我的 spring-servlet.xml 文件中，我缺少一些元素：

<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
<!-- This tag allows for mapping the DispatcherServlet to "/" (all extensions etc)-->
<mvc:default-servlet-handler/>


<!-- Enables many annotations and searches for @Controller annotated methods etc.. -->
<context:annotation-config />

一旦添加了这些，就会找到合适的控制器（基于注释）并在正确的 URI 处执行，从/.