java - spring 从函数调用 Controller 方法

Question

嗨，我有一个 Controller :-

@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{
  }
}

我还有另一个GenericFilterBean类。这是为了执行一些安全功能，例如验证 token 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方法，我如何调用 Controller 方法login

这个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入获取请求中。

其次，如果您希望过滤器验证登录，您可以将其用作中间件/作为方面/或者仅在服务类中编写验证方法并使用它。

如果您确实想通过过滤器调用端点，可以尝试使用其余模板。

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);