千峰商城-springboot项目搭建-55-通过Header传递token
前端但凡访问受限资源,都必须携带token发送请求。token可以通过请求行(params)、请求头(header)以及请求体(data)传递,但是习惯性使用header传递。
1.axios通过请求头传值
axios({ method:"get", url:baseUrl+"shopcart/list", headers:{ token:this.token } }).then(function(res){ console.log(res); });
2.在拦截器中放行option请求
@Component public class CheckTokenInterceptor implements HandlerInterceptor { @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { String method = request.getMethod(); if ("OPTIONS".equalsIgnoreCase(method)){ return true;//收到试探数据则放行(三次握手中的第一次试探) } String token = request.getHeader("token"); //System.out.println("---------"+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("q666");//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 Jws<Claims> claimsJwt = parser.parseClaimsJws(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,自重哈", 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(); } }