我最近开始学习Spring Security,今天我介绍了这个基本的(我相信)问题:为什么我无法像Servlet Filter那样访问Servlet Filter中的当前Principal?在下面的类:Spring Security:在servlet中访问当前经过身份验证的用户Filter
package com.acme.test;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContext;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.stereotype.Component;
@Component
public class TestFilter implements Filter {
/*
* (non-Javadoc)
*
* @see javax.servlet.Filter#init(javax.servlet.FilterConfig)
*/
@Override
public void init(FilterConfig filterConfig) throws ServletException {
// TODO Auto-generated method stub
}
/*
* (non-Javadoc)
*
* @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest,
* javax.servlet.ServletResponse, javax.servlet.FilterChain)
*/
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
SecurityContext securityContext = SecurityContextHolder.getContext();
Authentication auth = securityContext.getAuthentication();
// auth is null here
chain.doFilter(request, response);
}
/*
* (non-Javadoc)
*
* @see javax.servlet.Filter#destroy()
*/
@Override
public void destroy() {
// TODO Auto-generated method stub
}
}
认证对象与认证AUTH = securityContext.getAuthentication()取回;为空。在MVC @Controller中使用上面的代码片段工作得很好(如预期的那样)。
这是怎么发生的?
我想看看春季安全过滤器链,覆盖默认的Spring配置,并在适当位置插入过滤器。身份验证可能只能在某个位置http://docs.spring.io/spring-security/site/docs/3.1.x/reference/security-filter-chain.html – jpprade 2014-09-30 20:46:00
@jpprade谢谢。我最感兴趣的是泛型过滤器,所以我不想重写安全过滤器。看起来(从下面的答案),配置过滤器的顺序工作。 – dimi 2014-10-01 08:30:18