1、创建token接口

public interface TokenManager {

    /**
     * 创建token
     * @param userInfo
     * @return
     */
    String getToken(UserInfo userInfo);

    /**
     * 刷新用户
     * @param token
     */
    void refreshUserToken(String token);

    /**
     * 用户退出登陆
     * @param token
     */
    void loginOff(String token);

    /**
     * 获取用户信息
     * @param token
     * @return
     */
    UserInfo getUserInfoByToken(String token);

}

2、token实现类

@Component
public class RedisTokenManager implements TokenManager {

    @Autowired
    private RedisUtils redisUtils;

    @Autowired
    private GlobalConfig globalConfig;

    /**
     * 创建token
     * @param userInfo
     * @return
     */
    public String getToken(UserInfo userInfo){
        //使用uuid作为源token
        String token = UUID.randomUUID().toString().replace("-", "");
        String token_format=String.format(Constants.TOKEN_FORMAT,token);
        redisUtils.set(token_format,userInfo,globalConfig.getTokenExpires());
        return token;
    }

    /**
     * 刷新用户
     * @param token
     */
    public void refreshUserToken(String token){
        token=String.format(Constants.TOKEN_FORMAT,token);
        if(redisUtils.exists(token)){
            redisUtils.setExpireTime(token, globalConfig.getTokenExpires());
        }
    }

    /**
     * 用户退出登陆
     * @param token
     */
    public void loginOff(String token){
         token=String.format(Constants.TOKEN_FORMAT,token);
         redisUtils.remove(token);
    }

    /**
     * 获取用户信息
     * @param token
     * @return
     */
    public UserInfo getUserInfoByToken(String token){
        token=String.format(Constants.TOKEN_FORMAT,token);
        if(redisUtils.exists(token)){
            return (UserInfo)redisUtils.get(token);
        }
        return null;
    }
}

3、对TokenManager进行二次封装，每次操作不需要token参数

@Component
public class AuthManager {

    @Autowired
    private TokenManager tokenManager;

    /**
     * 获取请求体
     * @return
     */
    public HttpServletRequest getRequest(){
        return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
    }

    /**
     * 登录
     * @param userInfo
     * @return
     */
    public String signIn(UserInfo userInfo){
        return tokenManager.getToken(userInfo);
    }

    /**
     * 获取该访问用户信息
     * @return
     */
    public UserInfo getUserInfo(){
        HttpServletRequest request=getRequest();
        String token=request.getAttribute(Constants.USER_TOKEN).toString();
        UserInfo userInfo=tokenManager.getUserInfoByToken(token);
        if(userInfo==null){
            throw new AuthException("该用户已过期", HttpStatus.UNAUTHORIZED.value());
        }
        return userInfo;
    }

    /**
     * 刷新该登录用户，延时
     */
    public void refreshUserInfo(){
        HttpServletRequest request=getRequest();
        String token=request.getAttribute(Constants.USER_TOKEN).toString();
         tokenManager.refreshUserToken(token);
    }

    /**
     * 注销该访问用户
     */
    public void loginOff(){
        HttpServletRequest request=getRequest();
        String token=request.getAttribute(Constants.USER_TOKEN).toString();
        tokenManager.loginOff(token);
    }
}

4、

对用户进行控制，部分接口可以不登陆访问

@Target({ElementType.METHOD,ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface AuthIgnore {

}

5、拦截器：

@Component
public class AuthorizationInterceptor extends HandlerInterceptorAdapter {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        AuthIgnore annotation;
        if(handler instanceof HandlerMethod) {
            annotation = ((HandlerMethod) handler).getMethodAnnotation(AuthIgnore.class);
        }else{
            return true;
        }

        //如果有@AuthIgnore注解，则不验证token
        if(annotation != null){
            return true;
        }

        //获取用户凭证
        String token = request.getHeader(Constants.USER_TOKEN);
        if(StringUtils.isBlank(token)){
            token = request.getParameter(Constants.USER_TOKEN);
        }
        if(StringUtils.isBlank(token)){
            Object obj = request.getAttribute(Constants.USER_TOKEN);
            if(null!=obj){
                token=obj.toString();
            }
        }

        //token凭证为空
        if(StringUtils.isBlank(token)){
            throw new AuthException(Constants.USER_TOKEN + "不能为空", HttpStatus.UNAUTHORIZED.value());
        }

        return true;
    }
}