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1跨域问题解决
package com.win.credit.point.gateway.config;
import java.time.Duration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.reactive.CorsWebFilter;
import org.springframework.web.cors.reactive.UrlBasedCorsConfigurationSource;
import org.springframework.web.util.pattern.PathPatternParser;
/**
?*/
@Configuration
public class CorsConfig {
? ? @Bean
? ? public CorsWebFilter corsFilter() {
? ? ? ? CorsConfiguration config = new CorsConfiguration();
? ? ? ? config.addAllowedMethod("*");;
? ? ? ? config.addAllowedOrigin("*");
? ? ? ? config.addAllowedHeader("*");
? ? ? ? config.setMaxAge(Duration.ofHours(24));//options重复请求cache优化
? ? ? ? UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource(new PathPatternParser());
? ? ? ? source.registerCorsConfiguration("/**", config);
? ? ? ? return new CorsWebFilter(source);
? ? }
}
2有网关一层，网关会转发一次，重复跨域
package com.win.credit.point.gateway.filter;
import java.util.Arrays;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.cloud.gateway.filter.NettyWriteResponseFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpHeaders;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
/**
?* 重复跨域，去重
?*/
@Component("corsResponseHeaderFilter")
public class ResponseCorsHeaderFilter implements GlobalFilter, Ordered {
?? ?private static final Logger logger = LoggerFactory.getLogger(ResponseCorsHeaderFilter.class);
?? ?
? ? @Override
? ? public int getOrder() {
? ? ? ? // 指定此过滤器位于NettyWriteResponseFilter之后
? ? ? ? // 即待处理完响应体后接着处理响应头
? ? ? ? return NettyWriteResponseFilter.WRITE_RESPONSE_FILTER_ORDER + 1000;
? ? }
? ? /**
? ? ?* Process the Web request and (optionally) delegate to the next {@code WebFilter}
? ? ?* through the given {@link GatewayFilterChain}.
? ? ?*
? ? ?* @param exchange the current server exchange
? ? ?* @param chain ? ?provides a way to delegate to the next filter
? ? ?* @return {@code Mono<Void>} to indicate when request processing is complete
? ? ?*/
? ? @Override
? ? public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
? ? ? ? return chain.filter(exchange).then(Mono.fromRunnable(() -> {
? ? ? ? ?? ?exchange.getResponse().getHeaders().entrySet().stream()
? ? ? ? ? ? .filter(kv -> (kv.getValue() != null && kv.getValue().size() > 1))
? ? ? ? ? ? .filter(kv -> (kv.getKey().equals(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN)
? ? ? ? ? ? ? ? ? ? || kv.getKey().equals(HttpHeaders.ACCESS_CONTROL_ALLOW_CREDENTIALS)))
? ? ? ? ? ? .forEach(kv -> {
? ? ? ? ? ? ? ? kv.setValue(Arrays.asList(kv.getValue().get(1)));
? ? ? ? ? ? });
? ? ? ? }));
? ? }
}
?
本文只给解决方式，仅供参考。
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