Spring Security中怎么自定义Filter操作,针对这个问题,这篇文章详细介绍了相对应的分析和解答,希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
别名 | 类名称 | Namespace Element or Attribute |
---|---|---|
CHANNEL_FILTER | ChannelProcessingFilter | http/intercept-url@requires-channel |
SECURITY_CONTEXT_FILTER | SecurityContextPersistenceFilter | http |
CONCURRENT_SESSION_FILTER | ConcurrentSessionFilter | session-management/concurrency-control |
HEADERS_FILTER | HeaderWriterFilter | http/headers |
CSRF_FILTER | CsrfFilter | http/csrf |
LOGOUT_FILTER | LogoutFilter | http/logout |
X509_FILTER | X509AuthenticationFilter | http/x509 |
PRE_AUTH_FILTER | AbstractPreAuthenticatedProcessingFilter( Subclasses) | N/A |
CAS_FILTER | CasAuthenticationFilter | N/A |
FORM_LOGIN_FILTER | UsernamePasswordAuthenticationFilter | http/form-login |
BASIC_AUTH_FILTER | BasicAuthenticationFilter | http/http-basic |
SERVLET_API_SUPPORT_FILTER | SecurityContextHolderAwareRequestFilter | http/@servlet-api-provision |
JAAS_API_SUPPORT_FILTER | JaasApiIntegrationFilter | http/@jaas-api-provision |
REMEMBER_ME_FILTER | RememberMeAuthenticationFilter | http/remember-me |
ANONYMOUS_FILTER | AnonymousAuthenticationFilter | http/anonymous |
SESSION_MANAGEMENT_FILTER | SessionManagementFilter | session-management |
EXCEPTION_TRANSLATION_FILTER | ExceptionTranslationFilter | http |
FILTER_SECURITY_INTERCEPTOR | FilterSecurityInterceptor | http |
SWITCH_USER_FILTER | SwitchUserFilter | N/A |
过滤器顺序从上到下
自定义的 Filter 建议继承 GenericFilterBean,本文示例:
package com.example.filter; import org.springframework.web.filter.GenericFilterBean; import javax.servlet.FilterChain; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import java.io.IOException; /** * @author 咸鱼 * @date 2019-05-26 18:02 */ public class BeforeLoginFilter extends GenericFilterBean { @Override public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { System.out.println("在 UsernamePasswordAuthenticationFilter 前调用"); chain.doFilter(request, response); } }
配置很简单,本文示例:
@Override protected void configure(HttpSecurity http) throws Exception { http .authorizeRequests() .antMatchers("/").permitAll() .antMatchers("/user/**").hasAuthority("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); }
说明:
HttpSecurity 有三个常用方法来配置:
addFilterBefore(Filter filter, Class<? extends Filter> beforeFilter)
在 beforeFilter 之前添加 filter
addFilterAfter(Filter filter, Class<? extends Filter> afterFilter)
在 afterFilter 之后添加 filter
addFilterAt(Filter filter, Class<? extends Filter> atFilter)
在 atFilter 相同位置添加 filter, 此 filter 不覆盖 filter
通过在不同 Filter 的 doFilter() 方法中加断点调试,可以判断哪个 filter 先执行,从而判断 filter 的执行顺序 。
1、定义自己的过滤器
2、指定位置,通过HttpSecurity的方法指定
package com.qiudaozhang.springsecurity.filter; import javax.servlet.*; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; public class RequestHeadCheckFilter implements Filter { @Override public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException { var httpRequest = (HttpServletRequest) servletRequest; var httpResponse = (HttpServletResponse) servletResponse; String requestId = httpRequest.getHeader("Request-id"); if(requestId == null || requestId.isBlank()) { httpResponse.setStatus(HttpServletResponse.SC_BAD_REQUEST); return; } filterChain.doFilter(servletRequest,servletResponse); } }
package com.qiudaozhang.springsecurity.filter; import javax.servlet.*; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; public class RequestParamCheckFilter implements Filter { @Override public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException { var httpRequest = (HttpServletRequest) servletRequest; var httpResponse = (HttpServletResponse) servletResponse; String timestamp = httpRequest.getParameter("timestamp"); if(timestamp == null || timestamp.isBlank()) { httpResponse.setStatus(HttpServletResponse.SC_FORBIDDEN); return; } filterChain.doFilter(servletRequest,servletResponse); } }
HttpSecurity中有两个方法,指定过滤器的位置,一个指定在谁前面,一个指定在谁后面。
public HttpSecurity addFilterAfter(Filter filter, Class<? extends Filter> afterFilter) { this.comparator.registerAfter(filter.getClass(), afterFilter); return this.addFilter(filter); } public HttpSecurity addFilterBefore(Filter filter, Class<? extends Filter> beforeFilter) { this.comparator.registerBefore(filter.getClass(), beforeFilter); return this.addFilter(filter); }
package com.qiudaozhang.springsecurity.config; import com.qiudaozhang.springsecurity.filter.RequestHeadCheckFilter; import com.qiudaozhang.springsecurity.filter.RequestParamCheckFilter; import org.springframework.context.annotation.Configuration; import org.springframework.security.config.annotation.web.builders.HttpSecurity; import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter; import org.springframework.security.web.authentication.www.BasicAuthenticationFilter; @Configuration public class ProjectConfig extends WebSecurityConfigurerAdapter { @Override protected void configure(HttpSecurity http) throws Exception { http.addFilterBefore( new RequestHeadCheckFilter(), BasicAuthenticationFilter.class ) .addFilterAfter(new RequestParamCheckFilter(),BasicAuthenticationFilter.class) .authorizeRequests() .anyRequest() .permitAll(); } }
准备一个端点测试
package com.qiudaozhang.springsecurity.controller; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class HelloController { @GetMapping("hello") public String hello () { return "hello"; } }
当前没有传递timestamp参数,所以参照约定,过滤器直接给出403.
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