org.springframework.web.servlet.config.annotation.CorsRegistration Maven / Gradle / Ivy
/*
* Copyright 2002-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.web.servlet.config.annotation;
import java.util.Arrays;
import org.springframework.web.cors.CorsConfiguration;
/**
* Assists with the creation of a {@link CorsConfiguration} instance for a given
* URL path pattern.
*
* @author Sebastien Deleuze
* @author Rossen Stoyanchev
* @author Sam Brannen
* @since 4.2
* @see CorsConfiguration
* @see CorsRegistry
*/
public class CorsRegistration {
private final String pathPattern;
private final CorsConfiguration config;
public CorsRegistration(String pathPattern) {
this.pathPattern = pathPattern;
// Same implicit default values as the @CrossOrigin annotation + allows simple methods
this.config = new CorsConfiguration().applyPermitDefaultValues();
}
/**
* The list of allowed origins that be specific origins, e.g.
* {@code "https://domain1.com"}, or {@code "*"} for all origins.
* A matched origin is listed in the {@code Access-Control-Allow-Origin}
* response header of preflight actual CORS requests.
*
By default, all origins are allowed.
*
Note: CORS checks use values from "Forwarded"
* (RFC 7239),
* "X-Forwarded-Host", "X-Forwarded-Port", and "X-Forwarded-Proto" headers,
* if present, in order to reflect the client-originated address.
* Consider using the {@code ForwardedHeaderFilter} in order to choose from a
* central place whether to extract and use, or to discard such headers.
* See the Spring Framework reference for more on this filter.
*/
public CorsRegistration allowedOrigins(String... origins) {
this.config.setAllowedOrigins(Arrays.asList(origins));
return this;
}
/**
* Set the HTTP methods to allow, e.g. {@code "GET"}, {@code "POST"}, etc.
*
The special value {@code "*"} allows all methods.
*
By default "simple" methods {@code GET}, {@code HEAD}, and {@code POST}
* are allowed.
*/
public CorsRegistration allowedMethods(String... methods) {
this.config.setAllowedMethods(Arrays.asList(methods));
return this;
}
/**
* Set the list of headers that a pre-flight request can list as allowed
* for use during an actual request.
*
The special value {@code "*"} may be used to allow all headers.
*
A header name is not required to be listed if it is one of:
* {@code Cache-Control}, {@code Content-Language}, {@code Expires},
* {@code Last-Modified}, or {@code Pragma} as per the CORS spec.
*
By default all headers are allowed.
*/
public CorsRegistration allowedHeaders(String... headers) {
this.config.setAllowedHeaders(Arrays.asList(headers));
return this;
}
/**
* Set the list of response headers other than "simple" headers, i.e.
* {@code Cache-Control}, {@code Content-Language}, {@code Content-Type},
* {@code Expires}, {@code Last-Modified}, or {@code Pragma}, that an
* actual response might have and can be exposed.
*
Note that {@code "*"} is not supported on this property.
*
By default this is not set.
*/
public CorsRegistration exposedHeaders(String... headers) {
this.config.setExposedHeaders(Arrays.asList(headers));
return this;
}
/**
* Whether the browser should send credentials, such as cookies along with
* cross domain requests, to the annotated endpoint. The configured value is
* set on the {@code Access-Control-Allow-Credentials} response header of
* preflight requests.
*
NOTE: Be aware that this option establishes a high
* level of trust with the configured domains and also increases the surface
* attack of the web application by exposing sensitive user-specific
* information such as cookies and CSRF tokens.
*
By default this is not set in which case the
* {@code Access-Control-Allow-Credentials} header is also not set and
* credentials are therefore not allowed.
*/
public CorsRegistration allowCredentials(boolean allowCredentials) {
this.config.setAllowCredentials(allowCredentials);
return this;
}
/**
* Configure how long in seconds the response from a pre-flight request
* can be cached by clients.
*
By default this is set to 1800 seconds (30 minutes).
*/
public CorsRegistration maxAge(long maxAge) {
this.config.setMaxAge(maxAge);
return this;
}
protected String getPathPattern() {
return this.pathPattern;
}
protected CorsConfiguration getCorsConfiguration() {
return this.config;
}
}