代码之家 › 专栏 › 技术社区 › Vinod Kumar

如何在springwebfilter中添加自定义头?

spring-filter httprequest spring

1

Vinod Kumar · 技术社区 · 8 年前

java.lang.UnsupportedOperationException异常:空在java.util.Collections文件$不可修改的Map.ComputeFabSent(收藏.java:1535)~[na:1.8.0«]

public class AuthenticationWebFilter implements WebFilter {
    private static final Logger LOGGER = LoggerFactory.getLogger(AuthenticationWebFilter.class);

    @Autowired
    private TokenServiceRequest tokenServiceRequest;

    @Autowired
    private AuthenticationProvider authenticationProvider;

    public AuthenticationWebFilter(TokenServiceRequest tokenServiceRequest, AuthenticationProvider authenticationProvider) {
        super();
        this.tokenServiceRequest = tokenServiceRequest;
        this.authenticationProvider = authenticationProvider;
    }

    @Override
    public Mono<Void> filter(ServerWebExchange serverWebExchange, WebFilterChain webFilterChain) {
        HttpHeaders requestHeaders = serverWebExchange.getRequest().getHeaders();
        HttpHeaders responseHeaders = serverWebExchange.getResponse().getHeaders();
        LOGGER.info("Response HEADERS: "+responseHeaders);
        LOGGER.info("Request HEADERS: "+serverWebExchange.getRequest().getHeaders());

        tokenServiceRequest.setUsername(serverWebExchange.getRequest().getHeaders().getFirst(CommerceConnectorConstants.USERNAME));
        tokenServiceRequest.setPassword(serverWebExchange.getRequest().getHeaders().getFirst(CommerceConnectorConstants.PASSWORD));
        tokenServiceRequest.setClientId(serverWebExchange.getRequest().getHeaders().getFirst(CommerceConnectorConstants.CLIENT_ID));
        tokenServiceRequest.setSecretClient(serverWebExchange.getRequest().getHeaders().getFirst(CommerceConnectorConstants.SECRET_CLIENT));
        LOGGER.info("Token Received: " + authenticationProvider.getUserAccessToken(tokenServiceRequest).getTokenId());

        //responseHeaders.set(CommerceConnectorConstants.X_AUTH_TOKEN, authenticationProvider.getUserAccessToken(tokenServiceRequest).getTokenId());
        //responseHeaders.add(CommerceConnectorConstants.X_AUTH_TOKEN, authenticationProvider.getUserAccessToken(tokenServiceRequest).getTokenId());

        //This below code is not working
        serverWebExchange.getRequest().getQueryParams().add("test", "value");

        //This below code is not working
        //serverWebExchange.getRequest().getHeaders().add(CommerceConnectorConstants.X_AUTH_TOKEN, authenticationProvider.getUserAccessToken(tokenServiceRequest).getTokenId());
        LOGGER.info("Exiting filter@AuthenticationWebFilter");
        return webFilterChain.filter(serverWebExchange);
    }
    }

在HTTPResponse中,我可以设置自定义头,但我的要求是在HTTPRequest中添加自定义头。请告知。

2 回复 | 直到 8 年前

1

9

Christian tom 8 年前

    @Component 
    public class LogFilter implements GlobalFilter, Ordered {

    private Logger LOG = LoggerFactory.getLogger(LogFilter.class);

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {

        return chain.filter(
                exchange.mutate().request(
                        exchange.getRequest().mutate()
                                .header("customer-header", "customer-header-value")
                                .build())
                        .build());
    }

    @Override
    public int getOrder() {
        return 0;
    } }

    RequestContext.getCurrentContext().addZuulRequestHeader("customer-header", "customer-header-value");

希望对你有帮助。

2

lczapski user12421871 6 年前

    public class CustomTokenFilter implements WebFilter {

    @Override
    public Mono<Void> filter(ServerWebExchange serverWebExchange, WebFilterChain webFilterChain) {
        ServerHttpRequest mutateRequest = serverWebExchange.getRequest().mutate()
                .header("token", "test")
                .build();
        ServerWebExchange mutateServerWebExchange = serverWebExchange.mutate().request(mutateRequest).build();
        return webFilterChain.filter(mutateServerWebExchange);
    }
}

3

0

Marcin Bukowiecki 8 年前

我认为抛出异常是因为安全原因。如果一个过滤器可以添加/修改HTTP请求头,那就太糟糕了。当然,您可以通过创建一系列装饰器来实现这一点:

import org.springframework.http.HttpHeaders;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpRequestDecorator;
import org.springframework.util.MultiValueMap;
import org.springframework.web.server.ServerWebExchange;
import org.springframework.web.server.ServerWebExchangeDecorator;
import org.springframework.web.server.WebFilter;
import org.springframework.web.server.WebFilterChain;
import reactor.core.publisher.Mono;

    public class CustomFilter implements WebFilter {

    public Mono<Void> filter(ServerWebExchange serverWebExchange, WebFilterChain webFilterChain) {

            ServerWebExchangeDecorator decorator = new ServerWebExchangeDecoratorImpl(serverWebExchange);

            //do your stuff using decorator 

            return webFilterChain.filter(decorator);
        }
    }


    class ServerWebExchangeDecoratorImpl extends ServerWebExchangeDecorator {

        private ServerHttpRequestDecorator requestDecorator;

        public ServerWebExchangeDecoratorImpl(ServerWebExchange delegate) {
            super(delegate);
            this.requestDecorator = new ServerHttpRequestDecoratorImpl(delegate.getRequest());
        }

        @Override
        public ServerHttpRequest getRequest() {
            return requestDecorator;
        }

    }

    class ServerHttpRequestDecoratorImpl extends  ServerHttpRequestDecorator {

        // your own query params implementation
        private MultiValueMap queryParams;

        public ServerHttpRequestDecoratorImpl(ServerHttpRequest request) {
            super(request);
            this.queryParams = new HttpHeaders();
            this.queryParams.addAll(request.getQueryParams());
        }

        @Override
        public MultiValueMap<String, String> getQueryParams() {
            return queryParams;
        }

        //override other methods if you want to modify the behavior
    }