Spring Web MVC Java配置 - 默認Servlet名稱

Question

我在春天寫了一個小應用程序來學習java配置，因為我已經被同行嘮叨了一段時間來升級我們的應用程序;-)，一個簡單的todo列表應用程序，它具有安全性和web mvc配置，JPA用於持久性，所有通過java配置。 我在嘗試運行應用程序時遇到了問題。 scurity配置和JPA等工作正常但在成功攔截受保護的URL后我得到一個空視圖

主Web應用程序初始化程序類擴展了AbstractAnnotationConfigDispatcherServletInitializer

public class WiggleWebApplicationInitializer extends
        AbstractAnnotationConfigDispatcherServletInitializer {

    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class<?>[] { WiggleApplicationConfig.class };
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {

        return new Class<?>[] { WiggleWebAppConfig.class };
    }

    @Override
    protected String[] getServletMappings() {
        return new String[] { "/" };
    }

    @Override
    protected void registerDispatcherServlet(ServletContext servletContext) {
        super.registerDispatcherServlet(servletContext);

        servletContext.addListener(new HttpSessionEventPublisher());

    }

    @Override
    protected Filter[] getServletFilters() {
        CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();
        characterEncodingFilter.setEncoding("UTF-8");
        characterEncodingFilter.setForceEncoding(true);

        return new Filter[] { characterEncodingFilter };
    }
}

WiggleApplicationConfig導入安全性，JPA和社交

@Configuration
@ComponentScan(basePackages = { "wiggle.app.services.*" })
@Import({ WigglePersistenceConfig.class, WiggleSecurityConfig.class,
        WiggleSocialConfig.class })
public class WiggleApplicationConfig {

    @Bean
    public DateFormat dateFormat() {
        return new SimpleDateFormat("dd-MM-yyyy");
    }

}

然后，Web配置添加默認處理程序等

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = { "wiggle.app.controllers.*" })
public class WiggleWebAppConfig extends WebMvcConfigurerAdapter {

    private static final String VIEW_RESOLVER_PREFIX = "/WEB-INF/jsp/";
    private static final String VIEW_RESOLVER_SUFFIX = ".jsp";

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/static/**").addResourceLocations(
                "/static/");
    }

    @Override
    public void configureDefaultServletHandling(
            DefaultServletHandlerConfigurer configurer) {
        configurer.enable();
    }

    @Bean
    public SimpleMappingExceptionResolver exceptionResolver() {
        SimpleMappingExceptionResolver exceptionResolver = new SimpleMappingExceptionResolver();

        Properties exceptionMappings = new Properties();

        exceptionMappings.put("java.lang.Exception", "error/error");
        exceptionMappings.put("java.lang.RuntimeException", "error/error");

        exceptionResolver.setExceptionMappings(exceptionMappings);

        Properties statusCodes = new Properties();

        statusCodes.put("error/404", "404");
        statusCodes.put("error/error", "500");

        exceptionResolver.setStatusCodes(statusCodes);

        return exceptionResolver;
    }

    @Bean
    public ViewResolver viewResolver() {
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();

        viewResolver.setViewClass(JstlView.class);
        viewResolver.setPrefix(VIEW_RESOLVER_PREFIX);
        viewResolver.setSuffix(VIEW_RESOLVER_SUFFIX);

        return viewResolver;
    }

}

所有這些都在wiggle.app.config包中，我的配置/**受保護，應該重定向到/ login，這對所有人開放，安全過濾器鏈確實可行，我看到Access Denied之后有重定向到/ wiggle / login當我訪問主頁時，如果我獲得404以后的日志條目，即http://localhost:8080/wiggle/

Previously Authenticated: org.springframework.security.authentication.AnonymousAuthenticationToken@6faeba70: Principal: anonymousUser; Credentials: [PROTECTED]; Authenticated: true; Details: org.springframework.security.web.authentication.WebAuthenticationDetails@fffbcba8: RemoteIpAddress: 0:0:0:0:0:0:0:1; SessionId: 8A7C29831E56336A6FDF1A0E19200E70; Granted Authorities: ROLE_ANONYMOUS 
Voter: org.springframework.security.web.access.expression.WebExpressionVoter@c01ac1b, returned: 1 
Authorization successful 
RunAsManager did not change Authentication object 
/login reached end of additional filter chain; proceeding with original chain 
DispatcherServlet with name 'dispatcher' processing GET request for [/wiggle/login] 
Looking up handler method for path /login 
Did not find handler method for [/login] 
Matching patterns for request [/login] are [/**] 
URI Template variables for request [/login] are {} 
Mapping [/login] to HandlerExecutionChain with handler [org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler@688a42b5] and 1 interceptor 
Last-Modified value for [/wiggle/login] is: -1 
SecurityContext is empty or contents are anonymous - context will not be stored in HttpSession. 
Null ModelAndView returned to DispatcherServlet with name 'dispatcher': assuming HandlerAdapter completed request handling 
Successfully completed request 
Chain processed normally 
SecurityContextHolder now cleared, as request processing completed 

我通常會將以下內容放在XML中來處理映射

<beans:bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
<!-- Enables annotated POJO @Controllers -->
<beans:bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">

和

 <!-- Scans within the base package of the application for @Components to configure as beans -->
 <context:component-scan base-package="com.code.controller" />

我無法找到我缺少的東西，以啟用Java配置的類似行為。

Answer 1

原來我錯過了這個配置的重要文檔， 16.16.8 mvc： Spring Framework Docs中的 default-servlet-handler

覆蓋“/”Servlet映射的警告是，必須通過名稱而不是路徑來檢索默認Servlet的RequestDispatcher。 DefaultServletHttpRequestHandler將嘗試使用大多數主要Servlet容器（包括Tomcat，Jetty，GlassFish，JBoss，Resin，WebLogic和WebSphere）的已知名稱列表，在啟動時自動檢測容器的默認Servlet。 如果使用不同的名稱自定義配置了默認Servlet，或者在默認Servlet名稱未知的情況下使用了不同的Servlet容器，則必須顯式提供默認的Servlet名稱，如下例所示：

@Configuration
@EnableWebMvc
public class WebConfig extends WebMvcConfigurerAdapter {

    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable("myCustomDefaultServlet");
   }

}

因此我改變了這一點

@Override
public void configureDefaultServletHandling(
        DefaultServletHandlerConfigurer configurer) {
    configurer.enable("wiggleServlet");
}

還有另一個錯誤配置

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = { "wiggle.app.controllers.*" })
public class WiggleWebAppConfig extends WebMvcConfigurerAdapter {

應該

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = { "wiggle.app.controllers" })
public class WiggleWebAppConfig extends WebMvcConfigurerAdapter {