GateWay全局过滤器(Global Filters)配置及跨域请求


系统自带全局过滤器:

 

 

 全局过滤器特点:

局部过滤器和全局过滤器区别: 

局部:局部针对某个路由, 需要在路由中进行配置

全局:针对所有路由请求, 一旦定义就会投入使用
自定义全局过滤器:

实现 GlobalFiter 过滤器:

package com.tulingxueyuan.filters;

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.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;


@Component
public class LogFilter implements GlobalFilter {
    Logger log= LoggerFactory.getLogger(this.getClass());

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

        log.info(exchange.getRequest().getPath().value());
        return chain.filter(exchange);
    }
}
Gateway跨域配置:

第一种方式:

# 跨域配置
spring:
  cloud:
    gateway:
      globalcors:
        cors-configurations:
          '[/**]': # 允许跨域访问的资源
            allowedOrigins: "*" #跨域允许来源, * 代表允许所有的请求进行跨域请求             allowedMethods:
              - GET
              - POST

第二种方式:

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("*");   // 允许的method
        config.addAllowedOrigin("*");   // 允许的来源
        config.addAllowedHeader("*");   // 允许的请求头参数

        // 运行访问的资源
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource(new PathPatternParser());
        source.registerCorsConfiguration("/**", config);

        return new CorsWebFilter(source);
    }
}

 


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