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我正在尝试将我的应用程序核心服务与我的 dispatcherservlet 和具有 @Controller 注释的类分开。我在这里阅读了很多关于 SO 的主题，但没有找到任何适合我的例子，只有关于根子层次结构、组件扫描包等的解释。

正如所有建议所说，在 appicationContext.xml 中我应该扫描除@Controller类之外的所有组件，而在我的 DispatcherServlet-servlet.xml 中我应该只扫描@Controller类。我这样做就像在这个@Service 构造了两次示例中一样。

所以我的应用程序构建成功，但是当我转到它的网页时，在 Chrome 中它告诉我This link appears to be broken.这意味着该页面存在，否则 Tomcat 会告诉我这个The requested resource (/myapp) is not available.

我的配置一定有问题。可能是什么问题？这是我的applicationContext.xml

<beans <!-- omitting namespaces for readability --> >

    <!-- Scans within the base package of the application for @Components to configure as beans -->
    <!-- @Controller, @Service, @Configuration, etc. -->
    <context:component-scan base-package="com.myapp">
        <context:exclude-filter expression="org.springframework.stereotype.Controller" type="annotation"/>
    </context:component-scan>

    <!-- Enables the Spring MVC @Controller programming model -->
    <mvc:annotation-driven />
    <mvc:resources mapping="/static/**" location="/" />
    <mvc:default-servlet-handler />
    <jpa:repositories base-package="com.myapp.repo" />
</beans>

接下来是我的web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app <!-- omitting namespaces for readability -->>

  <display-name>My application</display-name>

  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>
        classpath:applicationContext.xml
        classpath:spring-security.xml
        </param-value>
  </context-param>

  <listener>
    <listener-class>
        org.springframework.web.context.ContextLoaderListener
    </listener-class>
  </listener>

  <listener>
    <listener-class>
        org.springframework.web.context.request.RequestContextListener
    </listener-class>
  </listener>

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

  <servlet-mapping>
    <servlet-name>DispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

  <filter>
    <filter-name>springSecurityFilterChain</filter-name>
    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
  </filter>

  <filter-mapping>
    <filter-name>springSecurityFilterChain</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

    <!-- Ensure UTF-8 encoded pages so that certain characters are displayed and submitted correctly -->
    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>

    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!-- Enables support for DELETE and PUT request methods with web browser clients -->
    <filter>
        <filter-name>hiddenHttpMethodFilter</filter-name>
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>hiddenHttpMethodFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <error-page>
        <error-code>404</error-code>
        <location>/WEB-INF/view/error/404.jsp</location>
    </error-page>
</web-app>

下面是 DispatcherServlet-servlet.xml

<beans <!-- omitting namespaces for readability -->>
    <context:component-scan base-package="com.myapp.mvc" use-default-filters="false">
        <context:include-filter type="annotation"
            expression="org.springframework.stereotype.Controller" />
    </context:component-scan>
</beans>

这是我的配置类

@Configuration
@ImportResource("classpath:applicationContext.xml")
@PropertySource("classpath:images.properties")
public class AppConfig implements InitializingBean {

    @Inject
    ServletContext context;

    // Resolve logical view names to .jsp resources in the /WEB-INF/views directory
    @Bean
    ViewResolver viewResolver() {
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setPrefix("WEB-INF/view/");
        resolver.setSuffix(".jsp");
        return resolver;
    }

    // Configure the multipart resolver
    @Bean
    CommonsMultipartResolver multipartResolver() {
        CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver();
//      multipartResolver.setMaxUploadSize(2_202_009);
        return multipartResolver;
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        File logoImgPreview = new File("resources/img/image_footer_logo_preview.jpg");
        BufferedImage bufImgPreview = ImageIO.read(logoImgPreview);
        context.setAttribute("watermark_preview", bufImgPreview);
    }
}

所以最后这里是我的服务器启动时的日志：

http://pastie.org/private/z8zv7jaddytxsgbh7oggw

我在服务器日志中看到 DispatcherServlet 定义了控制器 bean，但 applicationContext 映射了 RequestMappingHandlers。应该是这样吗？我不太确定整个画面应该如何工作，但根据我到目前为止所阅读的所有内容，这种上下文分离必须是正确的。但是，我的配置中的错误在哪里？

这是我的家庭控制器，非常基本

@Controller
public class HomeController {

    private static Logger log = LoggerFactory.getLogger("com.myapp.mvc.HomeController");

    @RequestMapping("/")
    public String home() {
        log.debug("Requesting index page");
        return "index"; // it returns to index.jsp
    }
}
4

1 回答 1

3

您应该将所有与控制器相关的 bean 定义移动到 Dispatcher-servlet.xml 文件中，您仍然有一些在 applicationContext.xml 文件中 -

<mvc:annotation-driven />
<mvc:resources mapping="/static/**" location="/" />
<mvc:default-servlet-handler />

这可能不是您所看到问题的全部原因，但应该让您更进一步。

于 2012-11-22T04:04:22.460 回答