Java 类javax.servlet.Filter 实例源码

public static Filter general(AuthorizationCodeResourceDetails client, ResourceServerProperties resourceServerProperties, String path, OAuth2ClientContext oauth2ClientContext) {
    OAuth2ClientAuthenticationProcessingFilter oAuth2ClientAuthenticationFilter = new OAuth2ClientAuthenticationProcessingFilter(path){
        protected void successfulAuthentication(HttpServletRequest request, HttpServletResponse response,
                                                FilterChain chain, Authentication authResult) throws IOException, ServletException {
            super.successfulAuthentication(request, response, chain, authResult);
            OAuth2AccessToken accessToken = restTemplate.getAccessToken();
            log.warn(new Gson().toJson(authResult));
            log.warn(new Gson().toJson(accessToken));
        }
    };
    OAuth2RestTemplate oAuth2RestTemplate = new OAuth2RestTemplate(client, oauth2ClientContext);
    oAuth2ClientAuthenticationFilter.setRestTemplate(oAuth2RestTemplate);
    UserInfoTokenServices tokenServices = new UserInfoTokenServices(resourceServerProperties.getUserInfoUri(), client.getClientId());
    tokenServices.setRestTemplate(oAuth2RestTemplate);
    oAuth2ClientAuthenticationFilter.setTokenServices(tokenServices);
    return oAuth2ClientAuthenticationFilter;
}

@Bean
public FilterRegistrationBean correlationIdFilter() {
    return new FilterRegistrationBean(new Filter() {

        @Override
        public void init(FilterConfig filterConfig) throws ServletException {
        }

        @Override
        public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
            chain.doFilter(request, response);
        }

        @Override
        public void destroy() {
        }
    });
}

@Override
public void start(BundleContext context) throws Exception {
    log.info("######################################################");
    log.info("start");
    log.info("######################################################");

    Hashtable<String, String> props = new Hashtable<>();
    props.put("osgi.http.whiteboard.servlet.pattern", "/*");
    props.put("init.message", "Crazy filter!");
    props.put("service.ranking", "1");
    serviceRegistration = context.registerService(Filter.class.getName(), new CrazyFilter(), props);

    final ServiceReference<?> httpRef = context.getServiceReference("org.osgi.service.http.HttpService");
    httpService = (HttpService) context.getService(httpRef);

    httpService.registerServlet("/foo", new FooServlet(), new Hashtable(), httpService.createDefaultHttpContext());
}

/**
 * 对过滤器进行调整
 *
 * @param securityManager
 * @return
 */
@Bean(name = "shiroFilter")
protected ShiroFilterFactoryBean shiroFilterFactoryBean(DefaultWebSecurityManager securityManager, Config config) {
    ShiroFilterFactoryBean filterFactoryBean = super.shiroFilterFactoryBean();
    filterFactoryBean.setSecurityManager(securityManager);

    //过滤器设置
    Map<String, Filter> filters = new HashMap<>();
    SecurityFilter securityFilter = new SecurityFilter();
    securityFilter.setClients("cas,rest,jwt");
    securityFilter.setConfig(config);
    filters.put("casSecurityFilter", securityFilter);

    CallbackFilter callbackFilter = new CallbackFilter();
    callbackFilter.setConfig(config);
    filters.put("callbackFilter", callbackFilter);

    filterFactoryBean.setFilters(filters);


    return filterFactoryBean;
}

/**
 * Notify all lifecycle event listeners that a particular event has
 * occurred for this Container.  The default implementation performs
 * this notification synchronously using the calling thread.
 *
 * @param type Event type
 * @param filter The relevant Filter for this event
 * @param request The servlet request we are processing
 * @param response The servlet response we are processing
 */
public void fireInstanceEvent(String type, Filter filter,
                              ServletRequest request,
                              ServletResponse response) {

    if (listeners.length == 0)
        return;

    InstanceEvent event = new InstanceEvent(wrapper, filter, type,
                                            request, response);
    InstanceListener interested[] = null;
    synchronized (listeners) {
        interested = (InstanceListener[]) listeners.clone();
    }
    for (int i = 0; i < interested.length; i++)
        interested[i].instanceEvent(event);

}

@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain)
        throws ServletException, IOException {

    // Lazily initialize the delegate if necessary.
    Filter delegateToUse = this.delegate;
    if (delegateToUse == null) {
        synchronized (this.delegateMonitor) {
            if (this.delegate == null) {
                WebApplicationContext wac = findWebApplicationContext();
                if (wac == null) {
                    throw new IllegalStateException("No WebApplicationContext found: no ContextLoaderListener registered?");
                }
                this.delegate = initDelegate(wac);
            }
            delegateToUse = this.delegate;
        }
    }

    // Let the delegate perform the actual doFilter operation.
    invokeDelegate(delegateToUse, request, response, filterChain);
}

@Test
public void testMissingHostname() throws Exception {
  ServletRequest request = Mockito.mock(ServletRequest.class);
  Mockito.when(request.getRemoteAddr()).thenReturn(null);

  ServletResponse response = Mockito.mock(ServletResponse.class);

  final AtomicBoolean invoked = new AtomicBoolean();

  FilterChain chain = new FilterChain() {
    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse)
      throws IOException, ServletException {
      assertTrue(HostnameFilter.get().contains("???"));
      invoked.set(true);
    }
  };

  Filter filter = new HostnameFilter();
  filter.init(null);
  assertNull(HostnameFilter.get());
  filter.doFilter(request, response, chain);
  assertTrue(invoked.get());
  assertNull(HostnameFilter.get());
  filter.destroy();
}

/**
 * Perform work as a particular <code>Subject</code>. Here the work will be
 * granted to a <code>null</code> subject.
 *
 * @param methodName
 *            the method to apply the security restriction
 * @param targetObject
 *            the <code>Filter</code> on which the method will be called.
 * @param targetParameterTypes
 *            <code>Class</code> array used to instantiate a
 *            <code>Method</code> object.
 * @param targetParameterValues
 *            <code>Object</code> array contains the runtime parameters
 *            instance.
 * @param principal
 *            the <code>Principal</code> to which the security privilege
 *            apply
 */
public static void doAsPrivilege(final String methodName, final Filter targetObject,
        final Class<?>[] targetParameterTypes, final Object[] targetParameterValues, Principal principal)
        throws java.lang.Exception {

    // CometFilter instances must not be cached as Filter or
    // NoSuchMethodException will be thrown.
    Class<? extends Filter> targetType = targetObject instanceof CometFilter ? CometFilter.class : Filter.class;

    Method method = null;
    Method[] methodsCache = classCache.get(Filter.class);
    if (methodsCache == null) {
        method = createMethodAndCacheIt(methodsCache, targetType, methodName, targetParameterTypes);
    } else {
        method = findMethod(methodsCache, methodName);
        if (method == null) {
            method = createMethodAndCacheIt(methodsCache, targetType, methodName, targetParameterTypes);
        }
    }

    execute(method, targetObject, targetParameterValues, principal);
}

private void test(String method, String operation, String contentType,
                  boolean upload, boolean error) throws Exception {
  HttpServletRequest request = Mockito.mock(HttpServletRequest.class);
  HttpServletResponse response = Mockito.mock(HttpServletResponse.class);
  Mockito.reset(request);
  Mockito.when(request.getMethod()).thenReturn(method);
  Mockito.when(request.getParameter(HttpFSFileSystem.OP_PARAM)).thenReturn(operation);
  Mockito.when(request.getParameter(HttpFSParametersProvider.DataParam.NAME)).
    thenReturn(Boolean.toString(upload));
  Mockito.when(request.getContentType()).thenReturn(contentType);

  FilterChain chain = Mockito.mock(FilterChain.class);

  Filter filter = new CheckUploadContentTypeFilter();

  filter.doFilter(request, response, chain);

  if (error) {
    Mockito.verify(response).sendError(Mockito.eq(HttpServletResponse.SC_BAD_REQUEST),
                                       Mockito.contains("Data upload"));
  }
  else {
    Mockito.verify(chain).doFilter(request, response);
  }
}

public FilterInfo(final String name, final Class<? extends Filter> filterClass) {
    if (name == null) {
        throw UndertowServletMessages.MESSAGES.paramCannotBeNull("name");
    }
    if (filterClass == null) {
        throw UndertowServletMessages.MESSAGES.paramCannotBeNull("filterClass", "Filter", name);
    }
    if (!Filter.class.isAssignableFrom(filterClass)) {
        throw UndertowServletMessages.MESSAGES.filterMustImplementFilter(name, filterClass);
    }
    try {
        final Constructor<Filter> ctor = (Constructor<Filter>) filterClass.getDeclaredConstructor();
        ctor.setAccessible(true);
        this.instanceFactory = new ConstructorInstanceFactory<>(ctor);
        this.name = name;
        this.filterClass = filterClass;
    } catch (NoSuchMethodException e) {
        throw UndertowServletMessages.MESSAGES.componentMustHaveDefaultConstructor("Filter", filterClass);
    }
}

@Bean
public Filter ssoFilter(ClientResources client, String path) {
    MappingJackson2HttpMessageConverter customJsonMessageConverter = new
            MappingJackson2HttpMessageConverter();
    customJsonMessageConverter.setSupportedMediaTypes(Arrays.asList(MediaType.TEXT_PLAIN));
    MyOAuth2ClientAuthenticationProcessingFilter filter = new MyOAuth2ClientAuthenticationProcessingFilter(path);
    filter.setAllowSessionCreation(true);
    MyOAuth2RestTemplate template = new MyOAuth2RestTemplate(client.getClient(), oauth2ClientContext);
    template.setMessageConverters(Arrays.asList(customJsonMessageConverter));
    filter.setRestTemplate(template);
    MyUserInfoTokenServices tokenServices = new MyUserInfoTokenServices(client.getResource().getUserInfoUri(),
            client.getClient().getClientId(),
            userService,
            userWechatService,
            userPrivilegeService,
            privilegeConfigService);
    tokenServices.setRestTemplate(template);
    filter.setTokenServices(tokenServices);
    return filter;
}

@Override
@SuppressWarnings("unchecked") // doPrivileged() returns the correct type
public <T extends Filter> T createFilter(Class<T> c) throws ServletException {
    if (SecurityUtil.isPackageProtectionEnabled()) {
        try {
            return (T) invokeMethod(context, "createFilter", new Object[] { c });
        } catch (Throwable t) {
            ExceptionUtils.handleThrowable(t);
            if (t instanceof ServletException) {
                throw (ServletException) t;
            }
            return null;
        }
    } else {
        return context.createFilter(c);
    }
}

@Override
protected void before() throws Throwable {
    originalConfigLocation = System.getProperty("spring.config.location");
    if (!StringUtils.isEmpty(configurationLocation)) {
        System.setProperty("spring.config.location", configurationLocation);
    }

    app = new SpringApplication(LocalTestDataFlowServer.class);
    configurableApplicationContext = (WebApplicationContext) app.run(new String[]{"--server.port=0"});

    Collection<Filter> filters = configurableApplicationContext.getBeansOfType(Filter.class).values();
    mockMvc = MockMvcBuilders.webAppContextSetup(configurableApplicationContext)
            .addFilters(filters.toArray(new Filter[filters.size()]))
            .build();
    dataflowPort = configurableApplicationContext.getEnvironment().resolvePlaceholders("${server.port}");
}

@Override
protected void before() throws Throwable {

    final SpringApplicationBuilder builder = new SpringApplicationBuilder(LocalTestSkipperServer.class);

    if (this.configLocations  != null && this.configLocations.length > 0) {
        builder.properties(
            String.format("spring.config.location:%s", StringUtils.arrayToCommaDelimitedString(this.configLocations))
        );
    }

    if (this.configNames  != null && this.configNames.length > 0) {
        builder.properties(
            String.format("spring.config.name:%s", StringUtils.arrayToCommaDelimitedString(this.configNames))
        );
    }

    this.app = builder.build();



    configurableApplicationContext = app.run(
        new String[] { "--server.port=0" });

    Collection<Filter> filters = configurableApplicationContext.getBeansOfType(Filter.class).values();
    mockMvc = MockMvcBuilders.webAppContextSetup((WebApplicationContext) configurableApplicationContext)
            .addFilters(filters.toArray(new Filter[filters.size()])).build();
    skipperPort = configurableApplicationContext.getEnvironment().resolvePlaceholders("${server.port}");
}

@Bean(name = "shiroFilter")
public ShiroFilterFactoryBean shiroFilterFactoryBean(DefaultWebSecurityManager securityManager, CasConfig casConfig, CasFilter casFilter){
    ShiroFilterFactoryBean factoryBean = new MyShiroFilterFactoryBean();
    factoryBean.setSecurityManager(securityManager);
    factoryBean.setLoginUrl(casConfig.getLocalServerLoginUrl());
    factoryBean.setSuccessUrl("/user");
    factoryBean.setUnauthorizedUrl("/403");
    // 添加casFilter到shiroFilter中
    Map<String, Filter> filterMap = new HashMap<String, Filter>(1);
    filterMap.put(CAS_FILTER, casFilter);
    factoryBean.setFilters(filterMap);

    loadShiroFilterChain(factoryBean, casConfig);
    return factoryBean;
}

@Override
public void doFilter(final ServletRequest request, final ServletResponse response) throws IOException,
        ServletException {
    if (currentPosition == additionalFilters.size()) {
        originalChain.doFilter(request, response);
    } else {
        currentPosition++;
        Filter nextFilter = additionalFilters.get(currentPosition - 1);
        nextFilter.doFilter(request, response, this);
    }
}

/**
 * Web服务过滤器
 *
 * @return
 */
@Override
protected Filter[] getServletFilters() {

    //所有内容按UTF-8编码
    CharacterEncodingFilter encodingFilter = new CharacterEncodingFilter();
    encodingFilter.setEncoding("UTF-8");
    encodingFilter.setForceEncoding(true);

    //跨域访问支持
    Filter corsfilter = new CORSFilter();

    return new Filter[]{encodingFilter, corsfilter};
}

@Bean
public FilterRegistrationBean threadLocalFilter() {
    Filter filter = new MDCServletFilter();
    FilterRegistrationBean registration = new FilterRegistrationBean(filter);
    registration.setOrder(Ordered.HIGHEST_PRECEDENCE);
    registration.setName(MDCServletFilter.class.getSimpleName());
    return registration;
}

@Bean("shiroFilter")
public ShiroFilterFactoryBean shirFilter(SecurityManager securityManager) {
    ShiroFilterFactoryBean shiroFilter = new ShiroFilterFactoryBean();
    shiroFilter.setSecurityManager(securityManager);

    //oauth过滤
    Map<String, Filter> filters = new HashMap<>();
    filters.put("oauth2", new OAuth2Filter());
    shiroFilter.setFilters(filters);

    Map<String, String> filterMap = new LinkedHashMap<>();
    filterMap.put("/webjars/**", "anon");
    filterMap.put("/druid/**", "anon");
    filterMap.put("/api/**", "anon");

    //swagger配置
    filterMap.put("/swagger**", "anon");
    filterMap.put("/v2/api-docs", "anon");
    filterMap.put("/swagger-resources/configuration/ui", "anon");

    filterMap.put("/sys/login", "anon");
    filterMap.put("/**/*.css", "anon");
    filterMap.put("/**/*.js", "anon");
    filterMap.put("/**/*.html", "anon");
    filterMap.put("/fonts/**", "anon");
    filterMap.put("/plugins/**", "anon");
    filterMap.put("/favicon.ico", "anon");
    filterMap.put("/captcha.jpg", "anon");
    filterMap.put("/", "anon");
    filterMap.put("/**", "oauth2");
    shiroFilter.setFilterChainDefinitionMap(filterMap);

    return shiroFilter;
}

@Override
public FilterRegistration.Dynamic addFilter(String filterName,
        Filter filter) {
    if (SecurityUtil.isPackageProtectionEnabled()) {
        return (FilterRegistration.Dynamic) doPrivileged("addFilter",
                new Class[]{String.class, Filter.class},
                new Object[]{filterName, filter});
    } else {
        return context.addFilter(filterName, filter);
    }
}

/**
 * Perform work as a particular <code>Subject</code>. Here the work
 * will be granted to a <code>null</code> subject.
 *
 * @param methodName the method to apply the security restriction
 * @param targetObject the <code>Filter</code> on which the method will
 * be called.
 * @param targetParameterTypes <code>Class</code> array used to instantiate a
 * <code>Method</code> object.
 * @param targetParameterValues <code>Object</code> array contains the
 * runtime parameters instance.
 * @param principal the <code>Principal</code> to which the security
 * privilege apply
 */
public static void doAsPrivilege(final String methodName,
                                 final Filter targetObject,
                                 final Class<?>[] targetParameterTypes,
                                 final Object[] targetParameterValues,
                                 Principal principal)
    throws java.lang.Exception{

    // CometFilter instances must not be cached as Filter or
    // NoSuchMethodException will be thrown.
    Class<? extends Filter> targetType =
            targetObject instanceof CometFilter ? CometFilter.class : Filter.class;

    Method method = null;
    Method[] methodsCache = classCache.get(Filter.class);
    if(methodsCache == null) {
        method = createMethodAndCacheIt(methodsCache,
                                        targetType,
                                        methodName,
                                        targetParameterTypes);
    } else {
        method = findMethod(methodsCache, methodName);
        if (method == null) {
            method = createMethodAndCacheIt(methodsCache,
                                            targetType,
                                            methodName,
                                            targetParameterTypes);
        }
    }

    execute(method, targetObject, targetParameterValues, principal);
}

/**
 * Construct a new InstanceEvent with the specified parameters.  This
 * constructor is used for filter lifecycle events.
 *
 * @param wrapper Wrapper managing this servlet instance
 * @param filter Filter instance for which this event occurred
 * @param type Event type (required)
 * @param exception Exception that occurred
 */
public InstanceEvent(Wrapper wrapper, Filter filter, String type,
                     Throwable exception) {

  super(wrapper);
  this.filter = filter;
  this.servlet = null;
  this.type = type;
  this.exception = exception;

}

/**
 * Construct a new InstanceEvent with the specified parameters.  This
 * constructor is used for filter processing events.
 *
 * @param wrapper Wrapper managing this servlet instance
 * @param filter Filter instance for which this event occurred
 * @param type Event type (required)
 * @param request Servlet request we are processing
 * @param response Servlet response we are processing
 */
public InstanceEvent(Wrapper wrapper, Filter filter, String type,
                     ServletRequest request, ServletResponse response) {

  super(wrapper);
  this.filter = filter;
  this.servlet = null;
  this.type = type;
  this.request = request;
  this.response = response;

}

/**
 * Construct a new InstanceEvent with the specified parameters.  This
 * constructor is used for filter processing events.
 *
 * @param wrapper Wrapper managing this servlet instance
 * @param filter Filter instance for which this event occurred
 * @param type Event type (required)
 * @param request Servlet request we are processing
 * @param response Servlet response we are processing
 * @param exception Exception that occurred
 */
public InstanceEvent(Wrapper wrapper, Filter filter, String type,
                     ServletRequest request, ServletResponse response,
                     Throwable exception) {

  super(wrapper);
  this.filter = filter;
  this.servlet = null;
  this.type = type;
  this.request = request;
  this.response = response;
  this.exception = exception;

}

/**
 * 对过滤器进行调整
 *
 * @param securityManager
 * @return
 */
@Bean
protected ShiroFilterFactoryBean shiroFilterFactoryBean(SecurityManager securityManager, SubjectFactory subjectFactory,@Qualifier("filters") Map<String, Filter> filters) {
    //把subject对象设为subjectFactory
    ((DefaultSecurityManager) securityManager).setSubjectFactory(subjectFactory);
    ShiroFilterFactoryBean filterFactoryBean = super.shiroFilterFactoryBean();
    filterFactoryBean.setSecurityManager(securityManager);

    filterFactoryBean.setFilters(filters);
    return filterFactoryBean;
}

/**
 * Construct a new InstanceEvent with the specified parameters.  This
 * constructor is used for filter processing events.
 *
 * @param wrapper Wrapper managing this servlet instance
 * @param filter Filter instance for which this event occurred
 * @param type Event type (required)
 * @param request Servlet request we are processing
 * @param response Servlet response we are processing
 */
public InstanceEvent(Wrapper wrapper, Filter filter, String type,
                     ServletRequest request, ServletResponse response) {

  super(wrapper);
  this.filter = filter;
  this.servlet = null;
  this.type = type;
  this.request = request;
  this.response = response;

}

/**
 * Notify all lifecycle event listeners that a particular event has
 * occurred for this Container.  The default implementation performs
 * this notification synchronously using the calling thread.
 *
 * @param type Event type
 * @param filter The relevant Filter for this event
 * @param request The servlet request we are processing
 * @param response The servlet response we are processing
 */
public void fireInstanceEvent(String type, Filter filter,
                              ServletRequest request,
                              ServletResponse response) {

    if (listeners.length == 0)
        return;

    InstanceEvent event = new InstanceEvent(wrapper, filter, type,
                                            request, response);
    InstanceListener interested[] = listeners;
    for (int i = 0; i < interested.length; i++)
        interested[i].instanceEvent(event);

}

LifecyleInterceptorInvocation(List<LifecycleInterceptor> list, FilterInfo filterInfo, Filter filter,  FilterConfig filterConfig) {
    this.list = list;
    this.servlet = null;
    this.servletConfig = null;
    this.filter = filter;
    this.filterConfig = filterConfig;
    this.filterInfo = filterInfo;
    this.servletInfo = null;
    i = list.size();
}

@Override
public FilterRegistration.Dynamic addFilter(String filterName,
        Filter filter) {
    if (SecurityUtil.isPackageProtectionEnabled()) {
        return (FilterRegistration.Dynamic) doPrivileged("addFilter",
                new Class[]{String.class, Filter.class},
                new Object[]{filterName, filter});
    } else {
        return context.addFilter(filterName, filter);
    }
}

@Override
public FilterRegistration.Dynamic addFilter(String filterName,
        Class<? extends Filter> filterClass) {
    if (SecurityUtil.isPackageProtectionEnabled()) {
        return (FilterRegistration.Dynamic) doPrivileged("addFilter",
                new Class[]{String.class, Class.class},
                new Object[]{filterName, filterClass});
    } else {
        return context.addFilter(filterName, filterClass);
    }
}

/**
 * Construct a new InstanceEvent with the specified parameters.  This
 * constructor is used for filter lifecycle events.
 *
 * @param wrapper Wrapper managing this servlet instance
 * @param filter Filter instance for which this event occurred
 * @param type Event type (required)
 * @param exception Exception that occurred
 */
public InstanceEvent(Wrapper wrapper, Filter filter, String type,
                     Throwable exception) {

  super(wrapper);
  this.wrapper = wrapper;
  this.filter = filter;
  this.servlet = null;
  this.type = type;
  this.exception = exception;

}

public void init(
  FilterConfig filterConfig) throws ServletException
{
  ClassLoader loader = Thread.currentThread().getContextClassLoader();
  if (loader == null)
    _LOG.severe("CANNOT_FIND_CONTEXT_CLASS_LOADER");
  else
  {
    try
    {
      Class<?> proxiedClass = loader.loadClass(
                    "org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl");
      _proxied = (Filter) proxiedClass.newInstance();
      _proxied.init(filterConfig);
    }
    catch (ClassNotFoundException cnfe)
    {
      _LOG.severe(cnfe);
    }
    catch (IllegalAccessException iae)
    {
      _LOG.severe(iae);
    }
    catch (InstantiationException ie)
    {
      _LOG.severe(ie);
    }
    catch (RuntimeException e)
    {
      // OC4J was not reporting these errors properly:
      _LOG.severe(e);
      throw e;
    }
  }


}

@Override
public FilterRegistration.Dynamic addFilter(String filterName,
        Class<? extends Filter> filterClass) {
    if (SecurityUtil.isPackageProtectionEnabled()) {
        return (FilterRegistration.Dynamic) doPrivileged("addFilter",
                new Class[]{String.class, Class.class},
                new Object[]{filterName, filterClass});
    } else {
        return context.addFilter(filterName, filterClass);
    }
}

@Override
protected Filter[] getServletFilters() {

    final CharacterEncodingFilter encodingFilter = new CharacterEncodingFilter();
    encodingFilter.setEncoding(CHARACTER_ENCODING);
    encodingFilter.setForceEncoding(true);

    return new Filter[]{encodingFilter};
}

private Filter filter(String className) {
  Class clazz = null;
  try {
    clazz = Class.forName(className);
    Object obj = clazz.newInstance();
    return (Filter) obj;
  } catch (Exception e) {
    throw new RuntimeException("instance filter fail", e);
  }

}

private Filter ssoFilter() {
    CompositeFilter filter = new CompositeFilter();
    List<Filter> filters = new ArrayList<>();
    ClientResources github = github();
    filters.add(ssoFilter(github, "/login/github", new OAuth2RestTemplate(github.getClient(), oauth2ClientContext)));

    ClientResources sina = sina();
    filters.add(sinaSsoFilter(sina, new OAuth2RestTemplate(sina.getClient(), oauth2ClientContext)));

    filters.add(qqSsoFilter(qq()));

    filter.setFilters(filters);
    return filter;
}

private Filter qqSsoFilter(ClientResources client) {
    QQOAuth2RestTemplate oAuth2RestTemplate = new QQOAuth2RestTemplate(client.getClient(), oauth2ClientContext);

    OAuth2ClientAuthenticationProcessingFilter oAuth2ClientAuthenticationFilter = new OAuth2ClientAuthenticationProcessingFilter("/login/qq");
    oAuth2ClientAuthenticationFilter.setRestTemplate(oAuth2RestTemplate);

    QQUserInfoTokenServices tokenServices = new QQUserInfoTokenServices(client.getResource().getUserInfoUri(), client.getClient().getClientId());
    tokenServices.setUserService(userService);
    tokenServices.setRestTemplate(oAuth2RestTemplate);
    oAuth2ClientAuthenticationFilter.setTokenServices(tokenServices);
    return oAuth2ClientAuthenticationFilter;
}

private Filter sinaSsoFilter(ClientResources client, OAuth2RestTemplate oAuth2RestTemplate) {

        OAuth2ClientAuthenticationProcessingFilter oAuth2ClientAuthenticationFilter = new OAuth2ClientAuthenticationProcessingFilter("/login/sina");
        oAuth2ClientAuthenticationFilter.setRestTemplate(oAuth2RestTemplate);

        SinaUserInfoTokenServices tokenServices = new SinaUserInfoTokenServices(client.getResource().getUserInfoUri(), client.getClient().getClientId());
        tokenServices.setUserService(userService);
        tokenServices.setRestTemplate(oAuth2RestTemplate);
        oAuth2ClientAuthenticationFilter.setTokenServices(tokenServices);
        return oAuth2ClientAuthenticationFilter;
    }

@Override
public FilterRegistration.Dynamic addFilter(final String filterName, final Filter filter) {
    ensureNotProgramaticListener();
    ensureNotInitialized();

    if (deploymentInfo.getFilters().containsKey(filterName)) {
        return null;
    }
    FilterInfo f = new FilterInfo(filterName, filter.getClass(), new ImmediateInstanceFactory<>(filter));
    deploymentInfo.addFilter(f);
    deployment.getFilters().addFilter(f);
    return new FilterRegistrationImpl(f, deployment, this);

}

LifecyleInterceptorInvocation(List<LifecycleInterceptor> list, FilterInfo filterInfo, Filter filter) {
    this.list = list;
    this.servlet = null;
    this.servletConfig = null;
    this.filter = filter;
    this.filterConfig = null;
    this.filterInfo = filterInfo;
    this.servletInfo = null;
    i = list.size();
}