SpringBoot+SpringSecurity前后端分离+Jwt的权限认证(改造记录)
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来源:blog.csdn.net/zzzgd_666/article/details/96444829
前言
一般来说,我们用SpringSecurity默认的话是前后端整在一起的,比如thymeleaf或者Freemarker,SpringSecurity还自带login登录页,还让你配置登出页,错误页。
但是现在前后端分离才是正道,前后端分离的话,那就需要将返回的页面换成Json格式交给前端处理了
SpringSecurity默认的是采用Session来判断请求的用户是否登录的,但是不方便分布式的扩展,虽然SpringSecurity也支持采用SpringSession来管理分布式下的用户状态,不过现在分布式的还是无状态的Jwt比较主流。
所以下面说下怎么让SpringSecurity变成前后端分离,采用Jwt来做认证的
一、五个handler一个filter两个User
5个handler,分别是
实现AuthenticationEntryPoint接口,当匿名请求需要登录的接口时,拦截处理
实现AuthenticationSuccessHandler接口,当登录成功后,该处理类的方法被调用
实现AuthenticationFailureHandler接口,当登录失败后,该处理类的方法被调用
实现AccessDeniedHandler接口,当登录后,访问接口没有权限的时候,该处理类的方法被调用
实现LogoutSuccessHandler接口,注销的时候调用
1.1 AuthenticationEntryPoint
匿名未登录的时候访问,遇到需要登录认证的时候被调用
/**
* 匿名未登录的时候访问,需要登录的资源的调用类
* @author zzzgd
*/
@Component
public class CustomerAuthenticationEntryPoint implements AuthenticationEntryPoint {
@Override
public void commence(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, AuthenticationException e) throws IOException, ServletException {
//设置response状态码,返回错误信息等
...
ResponseUtil.out(401, ResultUtil.failure(ErrorCodeConstants.REQUIRED_LOGIN_ERROR));
}
}
1.2 AuthenticationSuccessHandler
这里是我们输入的用户名和密码登录成功后,调用的方法
简单的说就是获取用户信息,使用JWT生成token,然后返回token
/**
* 登录成功处理类,登录成功后会调用里面的方法
* @author Exrickx
*/
@Slf4j
@Component
public class CustomerAuthenticationSuccessHandler implements AuthenticationSuccessHandler {
@Override
public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException {
//简单的说就是获取当前用户,拿到用户名或者userId,创建token,返回
log.info("登陆成功...");
CustomerUserDetails principal = (CustomerUserDetails) authentication.getPrincipal();
//颁发token
Map<String,Object> emptyMap = new HashMap<>(4);
emptyMap.put(UserConstants.USER_ID,principal.getId());
String token = JwtTokenUtil.generateToken(principal.getUsername(), emptyMap);
ResponseUtil.out(ResultUtil.success(token));
}
}
1.3 AuthenticationFailureHandler
有登陆成功就有登录失败
登录失败的时候调用这个方法,可以在其中做登录错误限制或者其他操作,我这里直接就是设置响应头的状态码为401,返回
/**
* 登录账号密码错误等情况下,会调用的处理类
* @author Exrickx
*/
@Slf4j
@Component
public class CustomerAuthenticationFailHandler implements AuthenticationFailureHandler {
@Override
public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException e) throws IOException, ServletException {
//设置response状态码,返回错误信息等
....
ResponseUtil.out(401, ResultUtil.failure(ErrorCodeConstants.LOGIN_UNMATCH_ERROR));
}
}
1.4 LogoutSuccessHandler
登出注销的时候调用,Jwt有个缺点就是无法主动控制失效,可以采用Jwt+session的方式,比如删除存储在Redis的token
这里需要注意,如果将SpringSecurity的session配置为无状态,或者不保存session,这里authentication为null!!,注意空指针问题。(详情见下面的配置WebSecurityConfigurerAdapter)
/**
* 登出成功的调用类
* @author zzzgd
*/
@Component
public class CustomerLogoutSuccessHandler implements LogoutSuccessHandler {
@Override
public void onLogoutSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException {
ResponseUtil.out(ResultUtil.success("Logout Success!"));
}
}
1.5 AccessDeniedHandler
登录后,访问缺失权限的资源会调用。
/**
* 没有权限,被拒绝访问时的调用类
* @author Exrickx
*/
@Component
@Slf4j
public class CustomerRestAccessDeniedHandler implements AccessDeniedHandler {
@Override
public void handle(HttpServletRequest request, HttpServletResponse response, AccessDeniedException accessDeniedException) {
ResponseUtil.out(403, ResultUtil.failure(ErrorCodeConstants.PERMISSION_DENY));
}
}
1.6 一个过滤器OncePerRequestFilter
这里算是一个小重点。
上面我们在登录成功后,返回了一个token,那怎么使用这个token呢?
前端发起请求的时候将token放在请求头中,在过滤器中对请求头进行解析。
如果有accessToken的请求头(可以自已定义名字),取出token,解析token,解析成功说明token正确,将解析出来的用户信息放到SpringSecurity的上下文中
如果有accessToken的请求头,解析token失败(无效token,或者过期失效),取不到用户信息,放行
没有accessToken的请求头,放行
这里可能有人会疑惑,为什么token失效都要放行呢?
这是因为SpringSecurity会自己去做登录的认证和权限的校验,靠的就是我们放在SpringSecurity上下文中的SecurityContextHolder.getContext().setAuthentication(authentication);
,没有拿到authentication,放行了,SpringSecurity还是会走到认证和校验,这个时候就会发现没有登录没有权限。
旧版本, 最新在底部
package com.zgd.shop.web.config.auth.filter;
import com.zgd.shop.common.constants.SecurityConstants;
import com.zgd.shop.common.util.jwt.JwtTokenUtil;
import com.zgd.shop.web.config.auth.user.CustomerUserDetailService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
* 过滤器,在请求过来的时候,解析请求头中的token,再解析token得到用户信息,再存到SecurityContextHolder中
* @author zzzgd
*/
@Component
@Slf4j
public class CustomerJwtAuthenticationTokenFilter extends OncePerRequestFilter {
@Autowired
CustomerUserDetailService customerUserDetailService;
@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws ServletException, IOException {
//请求头为 accessToken
//请求体为 Bearer token
String authHeader = request.getHeader(SecurityConstants.HEADER);
if (authHeader != null && authHeader.startsWith(SecurityConstants.TOKEN_SPLIT)) {
final String authToken = authHeader.substring(SecurityConstants.TOKEN_SPLIT.length());
String username = JwtTokenUtil.parseTokenGetUsername(authToken);
if (username != null && SecurityContextHolder.getContext().getAuthentication() == null) {
UserDetails userDetails = customerUserDetailService.loadUserByUsername(username);
if (userDetails != null) {
UsernamePasswordAuthenticationToken authentication =
new UsernamePasswordAuthenticationToken(userDetails, userDetails.getPassword(), userDetails.getAuthorities());
authentication.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
SecurityContextHolder.getContext().setAuthentication(authentication);
}
}
}
chain.doFilter(request, response);
}
}
1.7 实现UserDetails扩充字段
这个接口表示的用户信息,SpringSecurity默认实现了一个User,不过字段寥寥无几,只有username,password这些,而且后面获取用户信息的时候也是获取的UserDetail。学习资料:Java进阶视频资源
于是我们将自己的数据库的User作为拓展,自己实现这个接口。继承的是数据库对应的User,而不是SpringSecurity的User
package com.zgd.shop.web.config.auth.user;
import com.zgd.shop.common.constants.UserConstants;
import com.zgd.shop.dao.entity.model.User;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import java.util.Collection;
/**
* CustomerUserDetails
*
* @author zgd
* @date 2019/7/17 15:29
*/
public class CustomerUserDetails extends User implements UserDetails {
private Collection<? extends GrantedAuthority> authorities;
public CustomerUserDetails(User user){
this.setId(user.getId());
this.setUsername(user.getUsername());
this.setPassword(user.getPassword());
this.setRoles(user.getRoles());
this.setStatus(user.getStatus());
}
public void setAuthorities(Collection<? extends GrantedAuthority> authorities) {
this.authorities = authorities;
}
/**
* 添加用户拥有的权限和角色
* @return
*/
@Override
public Collection<? extends GrantedAuthority> getAuthorities() {
return this.authorities;
}
/**
* 账户是否过期
* @return
*/
@Override
public boolean isAccountNonExpired() {
return true;
}
/**
* 是否禁用
* @return
*/
@Override
public boolean isAccountNonLocked() {
return true;
}
/**
* 密码是否过期
* @return
*/
@Override
public boolean isCredentialsNonExpired() {
return true;
}
/**
* 是否启用
* @return
*/
@Override
public boolean isEnabled() {
return UserConstants.USER_STATUS_NORMAL.equals(this.getStatus());
}
}
1.8 实现UserDetailsService
SpringSecurity在登录的时候,回去数据库(或其他来源),根据username获取正确的user信息,就会根据这个service类,拿到用户的信息和权限。我们自己实现
package com.zgd.shop.web.config.auth.user;
import com.alibaba.fastjson.JSON;
import com.zgd.shop.dao.entity.model.User;
import com.zgd.shop.service.IUserService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.collections.CollectionUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;
import java.util.ArrayList;
import java.util.List;
/**
* @author zgd
* @date 2019/1/16 16:27
* @description 自己实现UserDetailService,用与SpringSecurity获取用户信息
*/
@Service
@Slf4j
public class CustomerUserDetailService implements UserDetailsService {
@Autowired
private IUserService userService;
/**
* 获取用户信息,然后交给spring去校验权限
* @param username
* @return
* @throws UsernameNotFoundException
*/
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
//获取用户信息
User user = userService.getUserRoleByUserName(username);
if(user == null){
throw new UsernameNotFoundException("用户名不存在");
}
CustomerUserDetails customerUserDetails = new CustomerUserDetails(user);
List<SimpleGrantedAuthority> authorities = new ArrayList<>();
//用于添加用户的权限。只要把用户权限添加到authorities 就万事大吉。
if (CollectionUtils.isNotEmpty(user.getRoles())){
user.getRoles().forEach(r -> authorities.add(new SimpleGrantedAuthority("ROLE_"+r.getRoleName())));
}
customerUserDetails.setAuthorities(authorities);
log.info("authorities:{}", JSON.toJSONString(authorities));
//这里返回的是我们自己定义的UserDetail
return customerUserDetails;
}
}
二、配置WebSecurityConfigurerAdapter
我们需要将上面定义的handler和filter,注册到SpringSecurity。同时配置一些放行的url
这里有一点需要注意:如果配置了下面的SessionCreationPolicy.STATELESS,则SpringSecurity不会保存session会话,在/logout登出的时候会拿不到用户实体对象。
http.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);
如果登出注销不依赖SpringSecurity,并且session交给redis的token来管理的话,可以按上面的配置。
package com.zgd.shop.web.config;
import com.zgd.shop.web.config.auth.encoder.MyAesPasswordEncoder;
import com.zgd.shop.web.config.auth.encoder.MyEmptyPasswordEncoder;
import com.zgd.shop.web.config.auth.handler.*;
import com.zgd.shop.web.config.auth.filter.CustomerJwtAuthenticationTokenFilter;
import com.zgd.shop.web.config.auth.user.CustomerUserDetailService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.builders.WebSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
/**
* @Author: zgd
* @Date: 2019/1/15 17:42
* @Description:
*/
@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(securedEnabled = true, prePostEnabled = true)// 控制@Secured权限注解
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
/**
* 这里需要交给spring注入,而不是直接new
*/
@Autowired
private PasswordEncoder passwordEncoder;
@Autowired
private CustomerUserDetailService customerUserDetailService;
@Autowired
private CustomerAuthenticationFailHandler customerAuthenticationFailHandler;
@Autowired
private CustomerAuthenticationSuccessHandler customerAuthenticationSuccessHandler;
@Autowired
private CustomerJwtAuthenticationTokenFilter customerJwtAuthenticationTokenFilter;
@Autowired
private CustomerRestAccessDeniedHandler customerRestAccessDeniedHandler;
@Autowired
private CustomerLogoutSuccessHandler customerLogoutSuccessHandler;
@Autowired
private CustomerAuthenticationEntryPoint customerAuthenticationEntryPoint;
/**
* 该方法定义认证用户信息获取的来源、密码校验的规则
*
* @param auth
* @throws Exception
*/
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
//auth.authenticationProvider(myauthenticationProvider) 自定义密码校验的规则
//如果需要改变认证的用户信息来源,我们可以实现UserDetailsService
auth.userDetailsService(customerUserDetailService).passwordEncoder(passwordEncoder);
}
@Override
protected void configure(HttpSecurity http) throws Exception {
/**
* antMatchers: ant的通配符规则
* ? 匹配任何单字符
* * 匹配0或者任意数量的字符,不包含"/"
* ** 匹配0或者更多的目录,包含"/"
*/
http
.headers()
.frameOptions().disable();
http
//登录后,访问没有权限处理类
.exceptionHandling().accessDeniedHandler(customerRestAccessDeniedHandler)
//匿名访问,没有权限的处理类
.authenticationEntryPoint(customerAuthenticationEntryPoint)
;
//使用jwt的Authentication,来解析过来的请求是否有token
http
.addFilterBefore(customerJwtAuthenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
http
.authorizeRequests()
//这里表示"/any"和"/ignore"不需要权限校验
.antMatchers("/ignore/**", "/login", "/**/register/**").permitAll()
.anyRequest().authenticated()
// 这里表示任何请求都需要校验认证(上面配置的放行)
.and()
//配置登录,检测到用户未登录时跳转的url地址,登录放行
.formLogin()
//需要跟前端表单的action地址一致
.loginProcessingUrl("/login")
.successHandler(customerAuthenticationSuccessHandler)
.failureHandler(customerAuthenticationFailHandler)
.permitAll()
//配置取消session管理,又Jwt来获取用户状态,否则即使token无效,也会有session信息,依旧判断用户为登录状态
.and()
.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
//配置登出,登出放行
.and()
.logout()
.logoutSuccessHandler(customerLogoutSuccessHandler)
.permitAll()
.and()
.csrf().disable()
;
}
}
三、其他
大概到这就差不多了,启动,localhost:8080/login
,使用postman,采用form-data,post提交,参数是username和password,调用,返回token。
将token放在header中,请求接口。学习资料:Java进阶视频资源
3.1 不足之处
上面是最简单的处理,还有很多优化的地方。比如
控制token销毁?
使用redis+token组合,不仅解析token,还判断redis是否有这个token。注销和主动失效token:删除redis的key
控制token过期时间?如果用户在token过期前1秒还在操作,下1秒就需要重新登录,肯定不好
1、考虑加入refreshToken,过期时间比token长,前端在拿到token的同时获取过期时间,在过期前一分钟用refreshToken调用refresh接口,重新获取新的token。
2、 将返回的jwtToken设置短一点的过期时间,redis再存这个token,过期时间设置长一点。如果请求过来token过期,查询redis,如果redis还存在,返回新的token。(为什么redis的过期时间大于token的?因为redis的过期是可控的,手动可删除,以redis的为准)
每次请求都会被OncePerRequestFilter 拦截,每次都会被UserDetailService中的获取用户数据请求数据库
可以考虑做缓存,还是用redis或者直接保存内存中
3.2 解决
这是针对上面的2.2说的,也就是redis时间久一点,jwt过期后如果redis没过期,颁发新的jwt。
不过更推荐的是前端判断过期时间,在过期之前调用refresh接口拿到新的jwt。
为什么这样?
如果redis过期时间是一周,jwt是一个小时,那么一个小时后,拿着这个过期的jwt去调,就可以想创建多少个新的jwt就创建,只要没过redis的过期时间。当然这是在没对过期的jwt做限制的情况下,如果要考虑做限制,比如对redis的value加一个字段,保存当前jwt,刷新后就用新的jwt覆盖,refresh接口判断当前的过期jwt是不是和redis这个一样。
总之还需要判断刷新token的时候,过期jwt是否合法的问题。总不能去年的过期token也拿来刷新吧。
而在过期前去刷新token的话,至少不会发生这种事情
不过我这里自己写demo,采用的还是2.2的方式,也就是过期后给个新的,思路如下:
登录后颁发token,token有个时间戳,同时以username拼装作为key,保存这个时间戳到缓存(redis,cache)
请求来了,过滤器解析token,没过期的话,还需要比较缓存中的时间戳和token的时间戳是不是一样 ,如果时间戳不一样,说明该token不能刷新。无视
注销,清除缓存数据
这样就可以避免token过期后,我还能拿到这个token无限制的refresh。
不过这个还是有细节方面问题,并发下同时刷新token这些并没有考虑,部分代码如下
旧版本, 最新在底部
package com.zgd.shop.web.auth.filter;
import com.zgd.shop.common.constants.SecurityConstants;
import com.zgd.shop.common.util.jwt.JwtTokenUtil;
import com.zgd.shop.web.auth.user.CustomerUserDetailService;
import com.zgd.shop.web.auth.user.CustomerUserDetails;
import com.zgd.shop.web.auth.user.UserSessionService;
import com.zgd.shop.web.auth.user.UserTokenManager;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.ExpiredJwtException;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
* 过滤器,在请求过来的时候,解析请求头中的token,再解析token得到用户信息,再存到SecurityContextHolder中
* @author zzzgd
*/
@Component
@Slf4j
public class CustomerJwtAuthenticationTokenFilter extends OncePerRequestFilter {
@Autowired
CustomerUserDetailService customerUserDetailService;
@Autowired
UserSessionService userSessionService;
@Autowired
UserTokenManager userTokenManager;
@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws ServletException, IOException {
//请求头为 accessToken
//请求体为 Bearer token
String authHeader = request.getHeader(SecurityConstants.HEADER);
if (authHeader != null && authHeader.startsWith(SecurityConstants.TOKEN_SPLIT)) {
final String authToken = authHeader.substring(SecurityConstants.TOKEN_SPLIT.length());
String username;
Claims claims;
try {
claims = JwtTokenUtil.parseToken(authToken);
username = claims.getSubject();
} catch (ExpiredJwtException e) {
//token过期
claims = e.getClaims();
username = claims.getSubject();
CustomerUserDetails userDetails = userSessionService.getSessionByUsername(username);
if (userDetails != null){
//session未过期,比对时间戳是否一致,是则重新颁发token
if (isSameTimestampToken(username,e.getClaims())){
userTokenManager.awardAccessToken(userDetails,true);
}
}
}
//避免每次请求都请求数据库查询用户信息,从缓存中查询
CustomerUserDetails userDetails = userSessionService.getSessionByUsername(username);
if (username != null && SecurityContextHolder.getContext().getAuthentication() == null) {
// UserDetails userDetails = customerUserDetailService.loadUserByUsername(username);
if (userDetails != null) {
if(isSameTimestampToken(username,claims)){
//必须token解析的时间戳和session保存的一致
UsernamePasswordAuthenticationToken authentication =
new UsernamePasswordAuthenticationToken(userDetails, userDetails.getPassword(), userDetails.getAuthorities());
authentication.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
SecurityContextHolder.getContext().setAuthentication(authentication);
}
}
}
}
chain.doFilter(request, response);
}
/**
* 判断是否同一个时间戳
* @param username
* @param claims
* @return
*/
private boolean isSameTimestampToken(String username, Claims claims){
Long timestamp = userSessionService.getTokenTimestamp(username);
Long jwtTimestamp = (Long) claims.get(SecurityConstants.TIME_STAMP);
return timestamp.equals(jwtTimestamp);
}
}
package com.zgd.shop.web.auth.user;
import com.google.common.collect.Maps;
import com.zgd.shop.common.constants.SecurityConstants;
import com.zgd.shop.common.constants.UserConstants;
import com.zgd.shop.common.util.ResponseUtil;
import com.zgd.shop.common.util.jwt.JwtTokenUtil;
import com.zgd.shop.core.result.ResultUtil;
import com.zgd.shop.web.config.auth.UserAuthProperties;
import org.apache.commons.collections.MapUtils;
import org.checkerframework.checker.units.qual.A;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
import java.util.HashMap;
import java.util.Map;
/**
* UserTokenManager
* token管理
*
* @author zgd
* @date 2019/7/19 15:25
*/
@Component
public class UserTokenManager {
@Autowired
private UserAuthProperties userAuthProperties;
@Autowired
private UserSessionService userSessionService;
/**
* 颁发token
* @param principal
* @author zgd
* @date 2019/7/19 15:34
* @return void
*/
public void awardAccessToken(CustomerUserDetails principal,boolean isRefresh) {
//颁发token 确定时间戳,保存在session中和token中
long mill = System.currentTimeMillis();
userSessionService.saveSession(principal);
userSessionService.saveTokenTimestamp(principal.getUsername(),mill);
Map<String,Object> param = new HashMap<>(4);
param.put(UserConstants.USER_ID,principal.getId());
param.put(SecurityConstants.TIME_STAMP,mill);
String token = JwtTokenUtil.generateToken(principal.getUsername(), param,userAuthProperties.getJwtExpirationTime());
HashMap<String, String> map = Maps.newHashMapWithExpectedSize(1);
map.put(SecurityConstants.HEADER,token);
int code = isRefresh ? 201 : 200;
ResponseUtil.outWithHeader(code,ResultUtil.success(),map);
}
}
针对token解析的过滤器做了优化:
如果redis的session没过期, 但是请求头的token过期了, 判断时间戳一致后, 颁发新token并返回
如果redis的session没过期, 但是请求头的token过期了, 时间戳不一致, 说明当前请求的token无法刷新token, 设置响应码为401返回
如果请求头的token过期了, 但是redis的session失效或未找到, 直接放行, 交给后面的权限校验处理(也就是没有给上下文SecurityContextHolder设置登录信息, 后面如果判断这个请求缺少权限会自行处理)
package com.zgd.shop.web.auth.filter;
import com.zgd.shop.common.constants.SecurityConstants;
import com.zgd.shop.common.util.ResponseUtil;
import com.zgd.shop.common.util.jwt.JwtTokenUtil;
import com.zgd.shop.core.error.ErrorCodeConstants;
import com.zgd.shop.core.result.ResultUtil;
import com.zgd.shop.web.auth.user.CustomerUserDetailService;
import com.zgd.shop.web.auth.user.CustomerUserDetails;
import com.zgd.shop.web.auth.user.UserSessionService;
import com.zgd.shop.web.auth.user.UserTokenManager;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.ExpiredJwtException;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
* 过滤器,在请求过来的时候,解析请求头中的token,再解析token得到用户信息,再存到SecurityContextHolder中
* @author zzzgd
*/
@Component
@Slf4j
public class CustomerJwtAuthenticationTokenFilter extends OncePerRequestFilter {
@Autowired
CustomerUserDetailService customerUserDetailService;
@Autowired
UserSessionService userSessionService;
@Autowired
UserTokenManager userTokenManager;
@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws ServletException, IOException {
//请求头为 accessToken
//请求体为 Bearer token
String authHeader = request.getHeader(SecurityConstants.HEADER);
if (authHeader != null && authHeader.startsWith(SecurityConstants.TOKEN_SPLIT)) {
//请求头有token
final String authToken = authHeader.substring(SecurityConstants.TOKEN_SPLIT.length());
String username;
Claims claims;
try {
claims = JwtTokenUtil.parseToken(authToken);
username = claims.getSubject();
} catch (ExpiredJwtException e) {
//token过期
claims = e.getClaims();
username = claims.getSubject();
CustomerUserDetails userDetails = userSessionService.getSessionByUsername(username);
if (userDetails != null){
//session未过期,比对时间戳是否一致,是则重新颁发token
if (isSameTimestampToken(username,e.getClaims())){
userTokenManager.awardAccessToken(userDetails,true);
//直接设置响应码为201,直接返回
return;
}else{
//时间戳不一致.无效token,无法刷新token,响应码401,前端跳转登录页
ResponseUtil.out(HttpStatus.UNAUTHORIZED.value(),ResultUtil.failure(ErrorCodeConstants.REQUIRED_LOGIN_ERROR));
return;
}
}else{
//直接放行,交给后面的handler处理,如果当前请求是需要访问权限,则会由CustomerRestAccessDeniedHandler处理
chain.doFilter(request, response);
return;
}
}
//避免每次请求都请求数据库查询用户信息,从缓存中查询
CustomerUserDetails userDetails = userSessionService.getSessionByUsername(username);
if (username != null && SecurityContextHolder.getContext().getAuthentication() == null) {
// UserDetails userDetails = customerUserDetailService.loadUserByUsername(username);
if (userDetails != null) {
if(isSameTimestampToken(username,claims)){
//必须token解析的时间戳和session保存的一致
UsernamePasswordAuthenticationToken authentication =
new UsernamePasswordAuthenticationToken(userDetails, userDetails.getPassword(), userDetails.getAuthorities());
authentication.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
SecurityContextHolder.getContext().setAuthentication(authentication);
}
}
}
}
chain.doFilter(request, response);
}
/**
* 判断是否同一个时间戳
* @param username
* @param claims
* @return
*/
private boolean isSameTimestampToken(String username, Claims claims){
Long timestamp = userSessionService.getTokenTimestamp(username);
Long jwtTimestamp = (Long) claims.get(SecurityConstants.TIME_STAMP);
return timestamp.equals(jwtTimestamp);
}
}
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