Spring security ---Filter的使用

原文链接： http://www.spring4all.com/article/422

类名称	Namespace Element or Attribute
ChannelProcessingFilter	http/intercept-url@requires-channel
SecurityContextPersistenceFilter	http
ConcurrentSessionFilter	session-management/concurrency-control
HeaderWriterFilter	http/headers
CsrfFilter	http/csrf
LogoutFilter	http/logout
XAuthenticationFilter	http/X509
AbstractPerAuthenticatedProcessingFilter	N/A
CasAuthenticationFilter	N/A
UsernamePasswordAuthenticationFilter	http/from-login
BasicAuthenticationFIlter	http/from-basic
SecurityContextHolderAwareRequestFilter	http/@servlet-api-provision
JaasAoilntegrationFilter	http/@jaas-api-provision
RememberMeAuthenticationFilter	http/remeber-me
AnonymousAuthenticationFilter	http/anonymous
SessionManagementFilter	session-management
ExceptionTranslationFilter	http
FilterSecurityInterceptor	http
SwitchUserFIlter	N/A

*****************过滤器的顺序从上到下

自定义过滤器方法：

public class BeforLoginFilter extends GenericFilterBean{

    public void doFilter(ServletRequest servletRequest,ServletResponse servletResponse,FilterChain filterChain) throws IOException ServletException{
        //调用Filter 链  .....
        filter.doFilter(servletRequest,servletResponse);
    }
            
}

配置自定义过滤器Filter在Spring Security 过滤链中的位置

protected void configure(HttpSecurity http) throws Exception {
        http
                .authorizeRequests()
                .antMatchers("/").permitAll()
                .antMatchers("/user/**").hasRole("USER")
                .and()
                .formLogin().loginPage("/login").defaultSuccessUrl("/user")
                .and()
                .logout().logoutUrl("/logout").logoutSuccessUrl("/login");

        // 在 UsernamePasswordAuthenticationFilter 前添加 BeforeLoginFilter
        http.addFilterBefore(new BeforeLoginFilter(), UsernamePasswordAuthenticationFilter.class);

        // 在 CsrfFilter 后添加 AfterCsrfFilter
        http.addFilterAfter(new AfterCsrfFilter(), CsrfFilter.class);
    }

HttpSecurity有三个常用方法来定义Filter 

•    addFilterBefore(Filter filter,CLass beforeFilter) 在beforeFilter之前添加filter
• addFilterAfter(Filter filter,Class afterFilter) 在 afterFilter 之后添加filter
• addFilterAt(Filter filter, Class atFilter) 在atFilter相同的位置添加FIlter ，此Filter 不覆盖Filter