千峰商城-springboot项目搭建-54-拦截器校验Token

@Component
public class CheckTokenInterceptor implements HandlerInterceptor { @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { String token = request.getParameter("token"); if (token == null) { ResultVO resultVO = new ResultVO(ResStatus.NO, "请先登录", null); //提示请先登录  doResponse(response,resultVO); return false; } else { try { //验证token JwtParser parser = Jwts.parser(); parser.setSigningKey("QIANfeng6666");//解析token时的SigningKey必须与设置token时设置的密码一致 //如果token正确(密码正确，有效期内)则正常执行，否则抛出异常 Jwt claimsJwt = parser.parseClaimsJwt(token); return true; } catch (ExpiredJwtException e) { ResultVO resultVO = new ResultVO(ResStatus.NO, "登陆过期", null); doResponse(response,resultVO); } catch (UnsupportedJwtException e) { ResultVO resultVO = new ResultVO(ResStatus.NO, "token不合法", null); doResponse(response,resultVO); } catch (Exception e) { ResultVO resultVO = new ResultVO(ResStatus.NO, "请先登录", null); doResponse(response,resultVO); } return false; } } private void doResponse(HttpServletResponse response,ResultVO resultVO) throws IOException { response.setContentType("application/json"); response.setCharacterEncoding("utf-8"); PrintWriter out = response.getWriter(); String s = new ObjectMapper().writeValueAsString(resultVO); out.println(s); out.flush(); out.close(); } }

 2.配置拦截器

@Configuration
public class InterceptorConfig implements WebMvcConfigurer { @Autowired private CheckTokenInterceptor checkTokenInterceptor; @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(checkTokenInterceptor) .addPathPatterns("/**") .excludePathPatterns("/user/**"); } }