SpringBoot 使用jwt进行身份验证

这里只供参考，比较使用jwt方式进行身份验证感觉不好，最不行的就是不能退出

登陆时设定多长过期时间，只能等这个时间过了以后才算退出，服务端只能验证请求过来的token是否通过验证

Code:

/**
 * Created by qhong on 2018/6/7 15:34
 * 标注该注解的，就不需要登录
 **/
@Target({ElementType.METHOD,ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface AuthIgnore {

}

LoginUser:

@Target(ElementType.PARAMETER)
@Retention(RetentionPolicy.RUNTIME)
public @interface LoginUser {

}

JwtUtil:

@ConfigurationProperties(prefix = "jwt")
@Component
public class JwtUtils {
    private Logger logger = LoggerFactory.getLogger(getClass());

    private String secret;
    private long expire;
    private String header;

    /**
     * 生成jwt token
     */
    public String generateToken(long userId) {
        Date nowDate = new Date();
        //过期时间
        Date expireDate = new Date(nowDate.getTime() + expire * );

        return Jwts.builder()
                .setHeaderParam("typ", "JWT")
                .setSubject(userId+"")
                .setIssuedAt(nowDate)
                .setExpiration(expireDate)
                .signWith(io.jsonwebtoken.SignatureAlgorithm.HS512, secret)
                .compact();
    }

    public Claims getClaimByToken(String token) {
        try {
            return Jwts.parser()
                    .setSigningKey(secret)
                    .parseClaimsJws(token)
                    .getBody();
        }catch (Exception e){
            logger.debug("validate is token error ", e);
            return null;
        }
    }

    /**
     * token是否过期
     * @return  true：过期
     */
    public boolean isTokenExpired(Date expiration) {
        return expiration.before(new Date());
    }

    public String getSecret() {
        return secret;
    }

    public void setSecret(String secret) {
        this.secret = secret;
    }

    public long getExpire() {
        return expire;
    }

    public void setExpire(long expire) {
        this.expire = expire;
    }

    public String getHeader() {
        return header;
    }

    public void setHeader(String header) {
        this.header = header;
    }
}

application.properties配置：

# 加密秘钥
jwt.secret=f4e2e52034348f86b67cde581c0f9eb5
# token有效时长，单位秒
jwt.expire=
jwt.header=token

拦截器：

/**
 * Created by qhong on 2018/6/7 15:36
 **/
@Component
public class AuthorizationInterceptor extends HandlerInterceptorAdapter {
    @Autowired
    private JwtUtils jwtUtils;

    public static final String USER_KEY = "userId";

    @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(jwtUtils.getHeader());
        if(StringUtils.isBlank(token)){
            token = request.getParameter(jwtUtils.getHeader());
        }

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

        Claims claims = jwtUtils.getClaimByToken(token);
        if(claims == null || jwtUtils.isTokenExpired(claims.getExpiration())){
            throw new AuthException(jwtUtils.getHeader() + "失效，请重新登录", HttpStatus.UNAUTHORIZED.value());
        }

        //设置userId到request里，后续根据userId，获取用户信息
        request.setAttribute(USER_KEY, Long.parseLong(claims.getSubject()));

        return true;
    }
}

注解拦截：

@Component
public class LoginUserHandlerMethodArgumentResolver implements HandlerMethodArgumentResolver {
    @Autowired
    private UserService userService;

    @Override
    public boolean supportsParameter(MethodParameter parameter) {
        return parameter.getParameterType().isAssignableFrom(User.class) && parameter.hasParameterAnnotation(LoginUser.class);
    }

    @Override
    public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer container,
                                  NativeWebRequest request, WebDataBinderFactory factory) throws Exception {
        //获取用户ID
        Object object = request.getAttribute(AuthorizationInterceptor.USER_KEY, RequestAttributes.SCOPE_REQUEST);
        if(object == null){
            return null;
        }

        //获取用户信息
        User user = userService.selectById((Long)object);

        return user;
    }
}

WebConfig:

@Configuration
public class WebConfig extends WebMvcConfigurerAdapter {

    @Autowired
    private AuthorizationInterceptor authorizationInterceptor;
    @Autowired
    private LoginUserHandlerMethodArgumentResolver loginUserHandlerMethodArgumentResolver;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(authorizationInterceptor).addPathPatterns("/**");
    }

    @Override
    public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {
        argumentResolvers.add(loginUserHandlerMethodArgumentResolver);
    }

}

Login:

    @PostMapping("/login")
    @AuthIgnore
    public R login2(@RequestBody User u){

        //用户登录
        long userId =userService.addUser(u);

        //生成token
        String token = jwtUtils.generateToken(userId);

        Map<String, Object> map = new HashMap<>();
        map.put("token", token);
        map.put("expire", jwtUtils.getExpire());

        return R.ok(map);
    }

LoginUser注解使用：

@RequestMapping(value="/query2",method= RequestMethod.POST)
    public User Query2(@LoginUser User u){
         return u;
    }

https://www.cnblogs.com/xiekeli/p/5607107.html

https://gitee.com/renrenio/renren-fast