spring 从函数调用控制器方法

Question

我有一个控制器：-@CrossOrigin(origins = "http://localhost", maxAge = 3600)@RestController@RequestMapping("/user")public class UserController {  @RequestMapping(value = "/login", method = RequestMethod.get)    public String login(@RequestBody User login) throws ServletException{  }}我还有另一GenericFilterBean堂课。这是为了执行一些安全功能，例如验证令牌等。public class JwtFilter extends GenericFilterBean {    public void doFilter(final ServletRequest req, final ServletResponse res, final FilterChain chain)            throws IOException, ServletException {     final HttpServletRequest request = (HttpServletRequest) req;    final HttpServletResponse response = (HttpServletResponse) res;    final String authHeader = request.getHeader("authorization");    if ("OPTIONS".equals(request.getMethod())) {        response.setStatus(HttpServletResponse.SC_OK);        chain.doFilter(req, res);    } else {        if (authHeader == null || !authHeader.startsWith("Bearer ")) {            new ModelAndView("user/login");// this way i am trying to call one controller method.             throw new ServletException("Missing or invalid Authorization header"); // this is throws one exception. This is only for the dev purpose.        }else {            final String token = authHeader.substring(7);            try {                final Claims claims = Jwts.parser().setSigningKey("secretkey").parseClaimsJws(token).getBody();                request.setAttribute("claims", claims);            } catch (final SignatureException e) {                throw new ServletException("Invalid token");            }            chain.doFilter(req, res);        }    }   }}我的问题来自于doFilter我如何调用控制器方法的方法login此new ModelAndView("user/login");代码不起作用。所以请建议一些方法来做到这一点。

Answer 1

作为最佳实践，您不应该真正将登录放在获取请求中。

其次，如果您希望您的过滤器验证登录，您可以将它用作中间件/作为方面/或者只在服务类中编写验证方法并使用它。

如果你真的想通过过滤器调用端点，你可以尝试使用 rest 模板。

String fooResourceUrl = "http://localhost:8080/user/login";

User userWithLoginCredentials = new User() //Create your user object

HttpEntity<User> request = new HttpEntity<>(userWithLoginCredentials);

RestTemplate restTemplate = new RestTemplate();

ResponseEntity<Foo> response = restTemplate.exchange(fooResourceUrl, HttpMethod.GET, request, User.class);