网关

配置网关以及解决跨域问题

​ 1、首先在前端页面，把基础请求路由给网关

  // api接口请求地址
  window.SITE_CONFIG['baseUrl'] = 'http://localhost:88/api';

​ 2、在网关中首先引入依赖

		<dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>
		<dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            <version>2.1.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
            <version>2.1.0.RELEASE</version>
        </dependency>

​ 3、将网关注册到nacos

//spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
//spring.application.name=container-gateway
//server.port=88
@EnableDiscoveryClient
@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})
public class ContainerGatewayApplication {
    public static void main(String[] args) {
        SpringApplication.run(ContainerGatewayApplication.class, args);
    }

}

​ 4、在application.yml文件中配置路由

spring:
  cloud:
    gateway:
      routes:
        - id: admin_route
          uri: lb://renren-fast
          predicates:
            - Path=/api/**
            #这里是指以/api开头的所有请求全部进行拦截
          filters:
            - RewritePath=/api/(?<segment>.*),/renren-fast/$\{segment}
            #对路径进行重写

​ 5、编写配置类，对跨域问题进行处理

@Configuration
public class ContainerOrgConfiguration {
    @Bean
    public CorsWebFilter corsWebFilter(){
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        CorsConfiguration corsConfiguration=new CorsConfiguration();
//        1、配置跨域
        corsConfiguration.addAllowedHeader("*");
        corsConfiguration.addAllowedMethod("*");
        corsConfiguration.addAllowedOrigin("*");
        corsConfiguration.setAllowCredentials(true);
        source.registerCorsConfiguration("/**",corsConfiguration);
        return new CorsWebFilter(source);
    }
}

​