多个CORS标头'Access-Control-Allow-Origin'不允许/CORS标头'Access-Control-Allow-Origin'丢失）

Question

@Component
public class CorsFilter extends OncePerRequestFilter {

    @Override
    protected void doFilterInternal(final HttpServletRequest request, final HttpServletResponse response,
                                    final FilterChain filterChain) throws ServletException, IOException {
        response.addHeader("Access-Control-Allow-Origin", "*");
        response.addHeader("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT, PATCH, HEAD");
        response.setHeader("Access-Control-Allow-Headers", "X-Requested-With, Authorization, Content-Type");
        response.addIntHeader("Access-Control-Max-Age", 3600);

        if ("OPTIONS".equalsIgnoreCase(request.getMethod())) 
        {
            response.setStatus(HttpServletResponse.SC_OK);
        } 
        else 
        {
            filterChain.doFilter(request, response);
        }
    }
}

    @Override
    protected void configure(HttpSecurity http) throws Exception 
    {
        http.addFilterBefore(corsFilter(), SessionManagementFilter.class);
        http.csrf().disable().
            authorizeRequests()
                .antMatchers("/api/auth/**","/api/MentorCalendar","/api/user/role/**").permitAll()
                .anyRequest().authenticated()
                .and()
                .exceptionHandling().authenticationEntryPoint(unauthorizedHandler).and()
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);

        http.addFilterBefore(authenticationJwtTokenFilter(), UsernamePasswordAuthenticationFilter.class);
    }

@Component
public class CorsFilter extends OncePerRequestFilter {

    @Override
    protected void doFilterInternal(final HttpServletRequest request, final HttpServletResponse response,
                                    final FilterChain filterChain) throws ServletException, IOException {
//        response.addHeader("Access-Control-Allow-Origin", "*");
        response.addHeader("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT, PATCH, HEAD");
        response.setHeader("Access-Control-Allow-Headers", "X-Requested-With, Authorization, Content-Type");
        response.addIntHeader("Access-Control-Max-Age", 3600);

        if ("OPTIONS".equalsIgnoreCase(request.getMethod())) 
        {
            response.setStatus(HttpServletResponse.SC_OK);
        } 
        else 
        {
            filterChain.doFilter(request, response);
        }
    }
}

export class LoginComponent {
  constructor(private LoginService: LoginService, private router: Router) {}

  login(inputUsername, inputPassword){
    this.LoginService.login({username: inputUsername, password: inputPassword})
        .subscribe(data => {
        localStorage.setItem("jwtToken", data.accessToken);

const httpOptions = {
  headers: new HttpHeaders({
    'Content-Type':  'application/json'
  })
};

@Injectable()
export class LoginService {
  loginUrl = "http://localhost:8924/api/auth/signin";

  constructor( private http: HttpClient ) {}

  login(loginCreds: any): Observable<any> {
  return this.http.post<any>(this.loginUrl, loginCreds, httpOptions);
  }
}

Response.AddHeader（“Access-Control-Allow-Origin”，“*”）是如何实现的；行设置多个标题时，包括，但没有当我删除它？

Answer 1

您是否尝试在springboot控制器中启用@CrossOrigin()。下面是基本的代码片段。

@CrossOrigin(origins = "http://localhost:9000")
@GetMapping("/greeting")
public Greeting greeting(@RequestParam(required=false, defaultValue="World") String name) {
    System.out.println("==== in greeting ====");
    return new Greeting(counter.incrementAndGet(), String.format(template, name));
}

有关更多信息，请访问启用CORS

我也有同样的问题。用上述方法解决了该问题。在使用Internet Explorer时，您一定不会出现CORS问题。