spring security 3.0 的 用户详细信息的 session 扩展 (基于rapid framework)

applicationContext-security.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:s="http://www.springframework.org/schema/security"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    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-2.0.4.xsd"
    default-autowire="byType" default-lazy-init="true">

    <description>使用SpringSecurity的安全配置文件</description>

    <!-- http安全配置 -->
    <s:http auto-config="true" access-decision-manager-ref="accessDecisionManager">
        <s:form-login login-page="/pages/Login/login.do" />
        <s:logout logout-success-url="/" />
        <s:remember-me key="ssss" />
    </s:http>
    <!-- 自定义成功和失败处理器,AppSessionSuccessHandler中设置了session -->
    <bean id="appSessionProcessingFilter" class="org.springframework.security.web.authentication.UsernamePasswordAuthenticationProcessingFilter"> 
        <s:custom-filter before="AUTHENTICATION_PROCESSING_FILTER" />
        <property name="authenticationFailureHandler"> 
            <bean class="org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler"> 
                <property name="defaultFailureUrl" value="/pages/Login/login.do?error=true"/> 
            </bean> 
        </property> 
        <property name="authenticationSuccessHandler"> 
            <bean class="javacommon.base.AppSessionSuccessHandler"> 
                <property name="defaultTargetUrl" value="/"/> 
            </bean> 
        </property>
    </bean>   

    <!-- 认证配置 -->
    <s:authentication-provider user-service-ref="userDetailsService">
        <!-- 可设置hash使用sha1或md5散列密码后再存入数据库 -->
        <s:password-encoder hash="plaintext" />
    </s:authentication-provider>

    <!-- 项目实现的用户查询服务 -->
    <bean id="userDetailsService" class="com.awd.service.UserDetailServiceImpl" />

    <!-- 重新定义的FilterSecurityInterceptor,使用databaseDefinitionSource提供的url-授权关系定义 -->
    <bean id="filterSecurityInterceptor" class="org.springframework.security.web.access.intercept.FilterSecurityInterceptor">
        <s:custom-filter before="FILTER_SECURITY_INTERCEPTOR" />
        <property name="accessDecisionManager" ref="accessDecisionManager" />
        <property name="objectDefinitionSource" ref="databaseDefinitionSource" />
    </bean>

    <!-- DefinitionSource工厂,使用resourceDetailService提供的URL-授权关系. -->
    <bean id="databaseDefinitionSource" class="javacommon.base.DefinitionSourceFactoryBean">
        <property name="resourceDetailService" ref="resourceDetailService" />
    </bean>
    
    <!-- 项目实现的URL-授权查询服务 -->
    <bean id="resourceDetailService" class="com.awd.service.ResourceDetailServiceImpl" />

    <!-- 授权判断配置, 将授权名称的默认前缀由ROLE_改为A_. -->
    <bean id="accessDecisionManager" class="org.springframework.security.access.vote.AffirmativeBased">
        <property name="decisionVoters">
            <list>
                <bean class="org.springframework.security.access.vote.RoleVoter">
                    <property name="rolePrefix" value="A_" />
                </bean>
                <bean class="org.springframework.security.access.vote.AuthenticatedVoter" />
            </list>
        </property>
    </bean>
</beans>

AppSessionSuccessHandler:

package javacommon.base;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.web.authentication.SavedRequestAwareAuthenticationSuccessHandler;
import org.springframework.security.web.savedrequest.SavedRequest;
import org.springframework.security.web.util.RedirectUtils;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import com.awd.dao.UsersDao;
import com.awd.model.Users;

@Transactional(readOnly = true)
public class AppSessionSuccessHandler extends
        SavedRequestAwareAuthenticationSuccessHandler {

    @Autowired
    private UsersDao usersDao;

    public void onAuthenticationSuccess(HttpServletRequest request,
            HttpServletResponse response, Authentication authentication)
            throws ServletException, IOException {

        SavedRequest savedRequest = getSavedRequest(request);

        if (savedRequest == null) {
            super.onAuthenticationSuccess(request, response, authentication);

            return;
        }

        if (isAlwaysUseDefaultTargetUrl()
                || StringUtils.hasText(request
                        .getParameter(getTargetUrlParameter()))) {
            removeSavedRequest(request);
            super.onAuthenticationSuccess(request, response, authentication);

            return;
        }

        // 参考Lingo 的Spring security 3.0文档 附录 C. Spring Security-3.0.0.M1

        HttpSession session = request.getSession();
        UserDetails userDetails = (UserDetails) authentication.getPrincipal();
        Users currentUser = usersDao.findByUnique("loginname", userDetails.getUsername().toString());
        session.setAttribute("currentUser", currentUser);

        // Use the SavedRequest URL
        String targetUrl = savedRequest.getFullRequestUrl();
        logger.debug("Redirecting to SavedRequest Url: " + targetUrl);
        RedirectUtils.sendRedirect(request, response, targetUrl,
                isUseRelativeContext());

    }

    private SavedRequest getSavedRequest(HttpServletRequest request) {
        HttpSession session = request.getSession(false);

        if (session != null) {
            return (SavedRequest) session
                    .getAttribute(SavedRequest.SPRING_SECURITY_SAVED_REQUEST_KEY);
        }

        return null;
    }

    private void removeSavedRequest(HttpServletRequest request) {
        HttpSession session = request.getSession(false);

        if (session != null) {
            logger.debug("Removing SavedRequest from session if present");
            session
                    .removeAttribute(SavedRequest.SPRING_SECURITY_SAVED_REQUEST_KEY);
        }
    }
}

UserDetailServiceImpl.java

package com.awd.service;

import java.util.HashSet;
import java.util.Set;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.DataAccessException;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.GrantedAuthorityImpl;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.transaction.annotation.Transactional;

import com.awd.dao.UsersDao;
import com.awd.model.Authorities;
import com.awd.model.Roles;
import com.awd.model.Users;


/**
 * 实现SpringSecurity的UserDetailsService接口,实现获取用户Detail信息的回调函�数.
 * 
 * @author calvin  edit by meetrice
 */
@Transactional(readOnly = true)
public class UserDetailServiceImpl implements UserDetailsService {
    
    
    @Autowired
    private UsersDao usersDao;

    /**
     * 获取用户Detail信息的回调函�数.
     */
    public UserDetails loadUserByUsername(String userName) throws UsernameNotFoundException, DataAccessException {

        Users users = usersDao.findByUnique("loginname", userName);
        if (users == null)
            throw new UsernameNotFoundException("用户" + userName + " 不存在");

        GrantedAuthority[] grantedAuths = obtainGrantedAuthorities(users);
        // 无以下属性,暂时全部设为true.
        boolean enabled = true;
        boolean accountNonExpired = true;
        boolean credentialsNonExpired = true;
        boolean accountNonLocked = true;

        org.springframework.security.core.userdetails.User userdetail = new org.springframework.security.core.userdetails.User(
                users.getLoginname(), users.getPassword(), enabled, accountNonExpired, credentialsNonExpired,
                accountNonLocked, grantedAuths);

        return userdetail;
    }

    /**
     * 获得用户所有角色的权限.
     */
    private GrantedAuthority[] obtainGrantedAuthorities(Users user) {
        Set<GrantedAuthority> authSet = new HashSet<GrantedAuthority>();
        for (Roles role : user.getRoles()) {
            for (Authorities authority : role.getAuthorities()) {
                authSet.add(new GrantedAuthorityImpl(authority.getName()));
            }
        }
        return authSet.toArray(new GrantedAuthority[authSet.size()]);
    }
}