java - 无法更改 spring-boot 过滤器映射

Question

我有以下类(class)

@Configuration
public class WebConfiguration {

    @Bean
    public ServletRegistrationBean slspServlet() {
        ServletRegistrationBean testServlet = new ServletRegistrationBean(new TestServlet());
        testServlet.addUrlMappings("/*");
        testServlet.setAsyncSupported(true);
        return TestServlet;
    }

    @Bean
    public ServletRegistrationBean aliveServlet() {
        ServletRegistrationBean aliveServlet = new ServletRegistrationBean(new AliveServlet());
        aliveServlet.addUrlMappings("/alive/*");
        aliveServlet.setLoadOnStartup(3);
        return aliveServlet;
    }

    @Bean
    public ServletRegistrationBean templateDownloaderServlet(){
        ServletRegistrationBean templateDownloader = new ServletRegistrationBean(new TemplateDownloaderServlet());
        templateDownloader.addUrlMappings("/template/download/*");
        templateDownloader.setLoadOnStartup(2);
        return templateDownloader;
    }

    @Bean
    public ServletRegistrationBean endOfGenerationThreadServlet(){
        ServletRegistrationBean endOfGenerationThread = new ServletRegistrationBean(new EndOfGenerationThreadServlet());
        endOfGenerationThread.addUrlMappings("/endofgenerationthread/*");
        endOfGenerationThread.setLoadOnStartup(1);
        return endOfGenerationThread;
    }

    @Bean
    public ServletRegistrationBean dispatcherServlet(){
        ServletRegistrationBean dispatcherServlet = new ServletRegistrationBean(new DispatcherServlet());
        dispatcherServlet.setName("dispatcherServlet");
        dispatcherServlet.addUrlMappings("/dispatcher/*");
        return dispatcherServlet;
    }

    @Bean
    public FilterRegistrationBean errorPageFilter(){
        FilterRegistrationBean errorPageFilter = new FilterRegistrationBean(new ErrorPageFilter(), dispatcherServlet());
        errorPageFilter.addUrlPatterns("/test/*");
        return errorPageFilter;
    }

    @Bean
    public FilterRegistrationBean characterEncodingFilter(){
        FilterRegistrationBean characterEncodingFilter = new FilterRegistrationBean(new CharacterEncodingFilter(), dispatcherServlet());
        characterEncodingFilter.addUrlPatterns("/test/*");
        return characterEncodingFilter;
    }

    @Bean
    public FilterRegistrationBean hiddenHttpMethodFilter(){
        FilterRegistrationBean hiddenHttpMethodFilter = new FilterRegistrationBean(new HiddenHttpMethodFilter(), dispatcherServlet());
        hiddenHttpMethodFilter.addUrlPatterns("/test/*");
        return hiddenHttpMethodFilter;
    }


}

我想要做的是更改hiddenHttpMethodFilter、characterEncodingFilter、errorPageFilter 的过滤器映射，以便我有映射/test/*。 当我启动应用程序时，我可以看到它默认为“/*”

Mapping servlet: 'testServlet' to [/*]
Mapping servlet: 'aliveServlet' to [/alive/*]
Mapping servlet: 'templateDownloaderServlet' to [/template/download/*]
Mapping servlet: 'endOfGenerationThreadServlet' to [/endofgenerationthread/*]
Mapping servlet: 'dispatcherServlet' to [/dispatcher/*]
Mapping filter: 'errorPageFilter' to: [/*]
Mapping filter: 'characterEncodingFilter' to: [/*]
Mapping filter: 'hiddenHttpMethodFilter' to: [/*]

我缺少什么或者我的配置有什么问题？我使用的是 spring-boot 1.2.5。

过滤器还有另一个问题(我认为是在过滤器中)。当我想访问 testServlet 中的 request.getInputstream() 时，它已经被读取。我还读过this question并尝试实现RequestWrapper，但在我的testServlet中包装请求为时已晚，因为输入流已被读取。那么有人可以帮我解决这个问题吗？

谢谢

Answer 1

您的FilterRegistrationBean名为 hiddenHttpMethodFilter 的 bean被 OrderedHiddenHttpMethodFilter 覆盖由 Spring Boot 自动配置创建的同名 bean。有一条日志消息告诉您正在发生这种情况:

2015-08-27 16:13:54.268  INFO 70942 --- [           main] o.s.b.f.s.DefaultListableBeanFactory     : Overriding bean definition for bean 'hiddenHttpMethodFilter' with a different definition: replacing [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=sampleWebFreeMarkerApplication; factoryMethodName=hiddenHttpMethodFilter; initMethodName=null; destroyMethodName=(inferred); defined in sample.freemarker.SampleWebFreeMarkerApplication] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration; factoryMethodName=hiddenHttpMethodFilter; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/WebMvcAutoConfiguration.class]]

您需要重命名您的 hiddenHttpMethodFilter方法。另外，如果您想配置 Filter 的注册或Servlet引导自动配置，无需创建 Filter或Servlet你自己。相反，您应该将现有的注入(inject)到 @Bean 中。方法:

@Bean
public FilterRegistrationBean hiddenHttpMethodFilterRegistration(
        HiddenHttpMethodFilter filter) {
    FilterRegistrationBean registration = new FilterRegistrationBean(filter);
    registration.setFilter(filter);
    registration.addUrlPatterns("/test/*");
    return registration;
}

您可能还需要考虑设置 server.servlet-path属性(property) application.properties作为配置调度程序 servlet 映射的更简单方法。