Spring Security 取Session中的值和修改userDetails(zz)

 

1.在session中取得spring security的登录用户名如下

${session.SPRING_SECURITY_CONTEXT.authentication.principal.username}

 

spring security 把SPRING_SECURITY_CONTEXT 放入了session 没有直接把username 放进去。

 下面一段代码主要描述的是session中的存的变量

存跳转时候的URL
session	{SPRING_SECURITY_SAVED_REQUEST_KEY=SavedRequest[http://localhost:8080/AVerPortal/resourceAction/resourceIndex.action]}

存的是登录成功时候session中存的信息
session	{SPRING_SECURITY_CONTEXT=org.springframework.security.context.SecurityContextImpl@87b16984: Authentication: org.springframework.security.providers.cas.CasAuthenticationToken@87b16984: Principal: com.avi.casExtends.UserInfo@ff631d80: Username: test; Password: [PROTECTED]; Enabled: true; AccountNonExpired: true; credentialsNonExpired: true; AccountNonLocked: true; Granted Authorities: ROLE_ADMIN; Password: [PROTECTED]; Authenticated: true; Details: org.springframework.security.ui.WebAuthenticationDetails@12afc: RemoteIpAddress: 127.0.0.1; SessionId: AE56E8925195DFF4C50ABD384574CCEA; Granted Authorities: ROLE_ADMIN Assertion: org.jasig.cas.client.validation.AssertionImpl@661a11 Credentials (Service/Proxy Ticket): ST-3-1lX3acgZ6HNgmhvjXuxB-cas, userId=2, userName=test}

 

2.在页面端用tag获取

<%@ taglib prefix='security' uri='http://www.springframework.org/security/tags'%>

 

<security:authentication property="principal.username"></security:authentication> 

或者

 

<security:authorize ifAllGranted="ROLE_ADMIN">

 <security:authentication property="principal.username"></security:authentication> 

</security:authorize>

 

或者取session中的值

#session.SPRING_SECURITY_CONTEXT.authentication.principal.username等同于

 

3.在后台获取

UserDetails userDetails = (UserDetails) SecurityContextHolder.getContext()
    .getAuthentication()
    .getPrincipal();

 

userDetails.getUsername()

 

想要获取更多的信息得扩展userDetails的默认实现类user类和UserDetailsService接口

由于springsecurity是把整个user信息放入session中的即：session.SPRING_SECURITY_CONTEXT.authentication.principal

这个就是代表着user对象

 

因此我做了扩展增加user里的信息 加上userId

代码如下：扩展user

package com.avi.casExtends;

import org.springframework.security.GrantedAuthority;
import org.springframework.security.userdetails.User;

public class UserInfo extends User{
	private static final long serialVersionUID = 1L;

    private String userId;

    @SuppressWarnings("deprecation")
	public UserInfo(String username, String password, boolean enabled, GrantedAuthority[] authorities)
        throws IllegalArgumentException {
        super(username,password, enabled, authorities);
    }

	public String getUserId() {
		return userId;
	}

	public void setUserId(String userId) {
		this.userId = userId;
	}

	public static long getSerialVersionUID() {
		return serialVersionUID;
	}

  
}

 

实现userDetailsservice接口

package com.avi.casExtends;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.springframework.dao.DataAccessException;
import org.springframework.security.GrantedAuthority;
import org.springframework.security.GrantedAuthorityImpl;
import org.springframework.security.userdetails.UserDetails;
import org.springframework.security.userdetails.UserDetailsService;
import org.springframework.security.userdetails.UsernameNotFoundException;

import com.avi.dao.AccountDao;
import com.avi.data.User;

public class UserInfoService implements UserDetailsService{
	
	private AccountDao accountDao;
	private Map<String, UserInfo> userMap = null;

    public UserInfoService() {
       
        
    }
    public void fillMap(){
    	 userMap = new HashMap<String, UserInfo>();
         List<User> users = accountDao.findAllUsers();
         UserInfo userInfo = null;
         for(User user:users){
         	userInfo = new UserInfo(user.getUserName(),user.getPassword(),true,new GrantedAuthority[]{
         		new GrantedAuthorityImpl(user.getRole()),
         	});
         	userInfo.setUserId(user.getId().toString());
         	
             userMap.put(user.getUserName(), userInfo);
         }
    }
    
    public UserDetails loadUserByUsername(String username)
        throws UsernameNotFoundException, DataAccessException {
    	if(userMap==null)
    		fillMap();
        return userMap.get(username);
    }

	public AccountDao getAccountDao() {
		return accountDao;
	}

	public void setAccountDao(AccountDao accountDao) {
		this.accountDao = accountDao;
	}

	public Map<String, UserInfo> getUserMap() {
		return userMap;
	}

	public void setUserMap(Map<String, UserInfo> userMap) {
		this.userMap = userMap;
	}

}

 

 private AccountDao accountDao;是注入进来的查数据库的类

然后修改XML文件指定所要用到的service

<authentication-provider user-service-ref="userDetailsService"/>

<bean id="userDetailsService" class="com.avi.casExtends.UserInfoService" singleton="false">
		<property name="accountDao" ref="accountDao"/>
</bean>

 

 

${session.SPRING_SECURITY_CONTEXT.authentication.principal.username}

 

http://blog.csdn.net/chenyongsuda/article/details/5327059