Spring Security：绕过登录表单
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【中文标题】Spring Security：绕过登录表单【英文标题】：Spring Security : Bypass login form 【发布时间】：2011-04-19 08:05:20 【问题描述】：我想在某些场景下绕过 Spring webflow (Spring 2.0.5) 应用程序的登录表单（因此为普通用户呈现登录表单，但当 URL 类似于 http://server.com/myspringapp/fakelogin?username=FakeUser&password=FakePassword 时，不应呈现用户登录表单，但只是根据请求参数在内部进行身份验证，然后带到安全页面）。
所以我不想要 Preauthenticastion，而是在特殊场合（当 URL 如上所述）时进行透明身份验证。我看到了诸如http://forum.springsource.org/showthread.php?t=59108 之类的线程，但没有提到解决方案。我尝试实现 AuthenticationProcessingFilter 但不太确定如何实现 requiresAuthentication() 方法。
以下是我当前的安全 XML：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:security="http://www.springframework.org/schema/security"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-2.0.xsd">
<bean id="customAuthenticationProvider" class="com.myco.jsf.spring.security.MyAuthenticationProvider">
<security:custom-authentication-provider/>
<constructor-arg>
<ref bean="webSessionFactory"/>
</constructor-arg>
<constructor-arg>
<ref bean="authenticationBridge"/>
</constructor-arg>
</bean>
<bean id="myEntryPoint" class="com.myco.web.filter.CustomAuthenticationEntryPoint">
<property name="loginFormUrl" value="/spring/login" />
</bean>
<bean id="myProcessingFilter" class="com.myco.web.filter.CustomAuthenticationProcessingFilter">
<security:custom-filter position="AUTHENTICATION_PROCESSING_FILTER" />
<property name="defaultTargetUrl" value="/spring/secure" />
<property name="authenticationFailureUrl" value="/spring/login" />
<property name="alwaysUseDefaultTargetUrl" value="false" />
<property name="filterProcessesUrl" value="/spring/j_spring_security_check" />
<property name="authenticationManager" ref="authenticationManager" />
<!--
<property name="allowSessionCreation" value="true" />
-->
</bean>
<security:authentication-manager alias="authenticationManager"/>
<security:http auto-config="false" access-denied-page="/spring/notpermitted" entry-point-ref="myEntryPoint">
<security:anonymous/>
<!--
<security:form-login login-page="/spring/login" login-processing-url="/spring/j_spring_security_check" default-target-url="/spring/secure"
always-use-default-target="false" authentication-failure-url="/spring/login" />
-->
<security:logout logout-url="/spring/j_spring_security_logout" logout-success-url="/spring/pages/logout" />
</security:http>
</beans>
以下是我的过滤器类：
public class CustomAuthenticationProcessingFilter extends
AuthenticationProcessingFilter
@Override
protected void successfulAuthentication(HttpServletRequest request,
HttpServletResponse response, Authentication authResult)
throws IOException, ServletException
super.successfulAuthentication(request, response, authResult);
System.out.println("==successful login==");
@Override
protected void unsuccessfulAuthentication(HttpServletRequest request,
HttpServletResponse response, AuthenticationException failed)
throws IOException, ServletException
super.unsuccessfulAuthentication(request, response, failed);
System.out.println("==failed login==");
@Override
protected boolean requiresAuthentication(HttpServletRequest request,
HttpServletResponse response)
boolean retVal = false;
String username = request.getParameter("j_username");
String password = request.getParameter("j_password");
if (username != null && password != null)
Authentication authResult = null;
try
authResult = attemptAuthentication(request);
if (authResult == null)
retVal = false;
catch (AuthenticationException failed)
try
unsuccessfulAuthentication(request, response, failed);
catch (Exception e)
retVal = false;
retVal = false;
try
successfulAuthentication(request, response, authResult);
catch (Exception e)
retVal = false;
return false;
else
retVal = super.requiresAuthentication(request, response);
return retVal;
我能够使用提供的请求参数进行身份验证，并且成功创建了身份验证对象。一旦过滤器继续前进，我就会得到异常：
15:29:08,734 INFO [STDOUT] 53453 ERROR [http-127.0.0.1-8080-2] org.ajax4jsf.webapp.BaseXMLFilter - Exception in the filter chain
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalStateException
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:659)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:552)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:206)
at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388)
at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.myco.jsf.filter.CharsetFilter.doFilter(CharsetFilter.java:38)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378)
at org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
at org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
at org.springframework.security.ui.SessionFixationProtectionFilter.doFilterHttp(SessionFixationProtectionFilter.java:67)
at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
at org.springframework.security.ui.ExceptionTranslationFilter.doFilterHttp(ExceptionTranslationFilter.java:101)
at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
at org.springframework.security.providers.anonymous.AnonymousProcessingFilter.doFilterHttp(AnonymousProcessingFilter.java:105)
at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
at org.springframework.security.wrapper.SecurityContextHolderAwareRequestFilter.doFilterHttp(SecurityContextHolderAwareRequestFilter.java:91)
at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
at org.springframework.security.ui.AbstractProcessingFilter.doFilterHttp(AbstractProcessingFilter.java:278)
at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
at org.springframework.security.ui.logout.LogoutFilter.doFilterHttp(LogoutFilter.java:89)
at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
at org.springframework.security.context.HttpSessionContextIntegrationFilter.doFilterHttp(HttpSessionContextIntegrationFilter.java:235)
at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390)
at org.springframework.security.util.FilterChainProxy.doFilter(FilterChainProxy.java:175)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:393)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.IllegalStateException
at org.apache.catalina.connector.ResponseFacade.sendError(ResponseFacade.java:407)
at javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:108)
at org.springframework.security.context.HttpSessionContextIntegrationFilter$OnRedirectUpdateSessionResponseWrapper.sendError(HttpSessionContextIntegrationFilter.java:498)
at javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:108)
at org.ajax4jsf.webapp.FilterServletResponseWrapper.sendError(FilterServletResponseWrapper.java:655)
at com.sun.facelets.FaceletViewHandler.handleFaceletNotFound(FaceletViewHandler.java:711)
at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:658)
at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100)
at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176)
at org.springframework.faces.mvc.JsfView.renderMergedOutputModel(JsfView.java:83)
at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1060)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:798)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:647)
... 61 more
你能帮我解释一下为什么会出现这个错误吗？我是否使用了正确类型的自定义过滤器？感谢您的帮助。
【问题讨论】：
【参考方案1】：我对 Spring Security 3 做了类似的事情，我认为旧版本也应该可以。我已经修改了我的代码，所以它适合你的情况。您可能需要弄清楚一些细节，但它应该为您提供基本的想法。
您可以使用过滤器来处理它：
public class MyAuthenticationFilter extends DelegatingFilterProxy
public void doFilter ...
String username = request.getParameter("username");
String password = request.getParameter("password");
// build authentication token for user
final Authentication auth = new UsernamePasswordAuthenticationToken(...);
auth.setAuthenticated(true);
// set authentication in context
SecurityContextHolder.getContext().setAuthentication(auth);
在您的 web.xml 中：
<filter>
<filter-name>myAuthenticationFilter</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>myAuthenticationFilter</filter-name>
<url-pattern>/fakelogin*</url-pattern>
</filter-mapping>
在你的 spring.xml 中：
<bean id="myAuthenticationFilter" class=... />
另一种选择是允许所有用户访问 fakeLogin
<intercept-url pattern="/fakelogin/**" access="permitAll" />
并将身份验证放入 Web Flow Action 中的安全上下文中。
【讨论】：
你也可以看看 Spring 的预认证过滤器。以上是关于Spring Security：绕过登录表单的主要内容，如果未能解决你的问题，请参考以下文章
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