Spring Web MVC Java配置-默认Servlet名称

Question

我写了一个小应用程序来学习java配置在春天，因为我已经被同行唠叨了一段时间，现在升级我们的应用程序;-)，一个简单的待办事项列表应用程序，它有安全和web mvc配置，JPA用于持久化，所有通过java配置。我在尝试运行应用程序时面临一个问题。安全配置和JPA等工作良好，但我得到一个空视图后，成功拦截受保护的url

主web应用程序初始化器类扩展了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导入安全、JPA和社会

@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");
    }
}

web配置然后添加默认处理程序等

@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;
    }
}

所有这些都位于包wiggle.app.config中，通过我的配置/**受到保护，应该重定向到/login，这是对所有人开放的，安全过滤器链确实工作正常，我看到访问被拒绝之后，有重定向到/wiggle/login，之后我如何获得404与以下日志条目，当我访问主页即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 

我通常会在XML中放入以下内容来处理映射

<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" />

我无法找出我正在做什么，以启用Java配置的类似行为。

Answer 1

我发现除了这个配置之外，我还错过了一个重要的文档，来自Spring框架文档

的16.16.8 mvc:default-servlet-handler一节。

重写"/"Servlet映射的警告是，默认Servlet的RequestDispatcher必须按名称而不是按路径检索。DefaultServletHttpRequestHandler将尝试在启动时自动检测容器的默认Servlet，使用大多数主要Servlet容器(包括Tomcat、Jetty、GlassFish、JBoss、Resin、WebLogic和WebSphere)的已知名称列表。如果默认Servlet已经用不同的名称自定义配置，或者如果在默认Servlet名称未知的情况下使用不同的Servlet容器，则必须显式地提供默认Servlet的名称，如下面的示例所示:

@Configuration
@EnableWebMvc
public class WebConfig extends WebMvcConfigurerAdapter {
    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable("myCustomDefaultServlet");
   }

}

因此我改成了这个

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

还有一个配置错误

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

应为

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