1.Spring Security 目前支持认证一体化如下认证技术：
HTTP BASIC authentication headers (一个基于IEFT RFC 的标准)
HTTP Digest authentication headers (一个基于IEFT RFC 的标准)
HTTP X.509 client certificate exchange (一个基于IEFT RFC 的标准)
LDAP (一个非常常见的跨平台认证需要做法，特别是在大环境)
Form-based authentication (提供简单用户接口的需求)
OpenID authentication
Computer Associates Siteminder
JA-SIG Central Authentication Service (CAS，这是一个流行的开源单点登录系统)
Transparent authentication context propagation for Remote Method Invocation and HttpInvoker (一个Spring远程调用协议)
2.但是有时不想使用这些认证,需要自定义用户认证
2.1 代码如下:
//从spring容器中获取UserDetailsService(这个从数据库根据用户名查询用户信息,及加载权限的service)
UserDetailsService userDetailsService =
(UserDetailsService)SpringContextUtil.getBean("userDetailsService");
//根据用户名username加载userDetails
UserDetails userDetails = userDetailsService.loadUserByUsername(username);
//根据userDetails构建新的Authentication,这里使用了
//PreAuthenticatedAuthenticationToken当然可以用其他token,如UsernamePasswordAuthenticationToken
PreAuthenticatedAuthenticationToken authentication =
new PreAuthenticatedAuthenticationToken(userDetails, userDetails.getPassword(),userDetails.getAuthorities());
//设置authentication中details
authentication.setDetails(new WebAuthenticationDetails(request));
//存放authentication到SecurityContextHolder
SecurityContextHolder.getContext().setAuthentication(authentication);
HttpSession session = request.getSession(true);
//在session中存放security context,方便同一个session中控制用户的其他操作
session.setAttribute("SPRING_SECURITY_CONTEXT", SecurityContextHolder.getContext());
2.2 方法userDetailsService.loadUserByUsername(username) 如下:
/**
* 获取用户Details信息的回调函数.
*/
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException,DataAccessException {
GeOperator geOperator = geOperatorService.findOperatorByPK(username);
if(geOperator == null){
throw new UsernameNotFoundException("","用户名错误");
}
//加载该用户权限
Set<GrantedAuthority> grantedAuths = obtainGrantedAuthorities(geOperator);
boolean enabled = true;
boolean accountNonExpired = true;
boolean credentialsNonExpired = true;
boolean accountNonLocked = true;
UserDetails userdetails = new MisUser(username, geOperator.getPwd(),
geOperator, enabled, accountNonExpired, credentialsNonExpired, accountNonLocked, grantedAuths);
return userdetails;
}
参考问题:
How to manually set an authenticated user in Spring Security / SpringMVC