我希望每个请求都能收到一些信息,所以我认为不是为每个请求设置一个函数,而是单独从请求中获取这些信息,最好有一个过滤器。
因此,每个请求都应通过该过滤器,我获得了我想要的东西。
问题是:如何编写自定义过滤器?
假设它不像任何预定义的弹簧安全过滤器,它是全新的。
答案 0 :(得分:45)
您可以使用标准Java过滤器。只需将它放在web.xml中的身份验证过滤器之后(这意味着它将在稍后的过滤器链中进行,并将在安全过滤器链之后调用)。
public class CustomFilter implements Filter{
@Override
public void destroy() {
// Do nothing
}
@Override
public void doFilter(ServletRequest req, ServletResponse res,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) req;
Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
Set<String> roles = AuthorityUtils.authorityListToSet(authentication.getAuthorities());
if (roles.contains("ROLE_USER")) {
request.getSession().setAttribute("myVale", "myvalue");
}
chain.doFilter(req, res);
}
@Override
public void init(FilterConfig arg0) throws ServletException {
// Do nothing
}
}
web.xml的片段:
<!-- The Spring Security Filter Chain -->
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- Your filter definition -->
<filter>
<filter-name>customFilter</filter-name>
<filter-class>com.yourcompany.test.CustomFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>customFilter</filter-name>
<url-pattern>/VacationsManager.jsp</url-pattern>
</filter-mapping>
此外,您可以添加将在成功登录后调用的处理程序(您需要扩展 SavedRequestAwareAuthenticationSuccessHandler )。 Look here如何做到这一点。我认为这是更好的主意。
更新:
或者您可以在安全过滤器的末尾使用此过滤器,如下所示:
<security:filter-chain-map>
<sec:filter-chain pattern="/**"
filters="
ConcurrentSessionFilterAdmin,
securityContextPersistenceFilter,
logoutFilterAdmin,
usernamePasswordAuthenticationFilterAdmin,
basicAuthenticationFilterAdmin,
requestCacheAwareFilter,
securityContextHolderAwareRequestFilter,
anonymousAuthenticationFilter,
sessionManagementFilterAdmin,
exceptionTranslationFilter,
filterSecurityInterceptorAdmin,
MonitoringFilter"/> <!-- Your Filter at the End -->
</security:filter-chain-map>
要使用过滤器,您可以使用:
public class MonitoringFilter extends GenericFilterBean{
@Override
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
//Implement this Function to have your filter working
}
答案 1 :(得分:15)
把它扔进混合物中;如何在custom-filter
元素中使用http
:
<security:http auto-config="false" ...>
...
<security:custom-filter position="FORM_LOGIN_FILTER" ref="MyCustomFilter" />
</security:http>