1、添加依赖
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.9.1</version>
</dependency>
2、配置文件
1)、配置文件
#使用服务发现路由
spring.cloud.gateway.discovery.locator.enabled=true
#服务路由名小写
spring.cloud.gateway.discovery.locator.lower-case-service-id=true
#设置路由id
spring.cloud.gateway.routes[0].id=SERVER-SHOP-USER
spring.cloud.gateway.routes[0].uri=lb://SERVER-SHOP-USER
spring.cloud.gateway.routes[0].predicates[0]=Path=/user/**
spring.cloud.gateway.routes[0].filters=StripPrefix=1
# CORS
spring.cloud.gateway.globalcors.cors-configurations.[/**].allowed-origins=*
spring.cloud.gateway.globalcors.cors-configurations.[/**].allowedHeaders=*
spring.cloud.gateway.globalcors.cors-configurations.[/**].allowedMethods=*
2)、配置类
@Configuration
public class RoutesConfiguration {
@Bean
public RouteLocator customRouteLocator(RouteLocatorBuilder builder) {
return builder.routes().route(predicateSpec ->
predicateSpec.path("/auth/**").uri("lb://auth-service").id("auth-service")
).build();
}
}
3、过滤器
package com.shenmazong.demoservergateway.filter;
import org.apache.commons.lang.StringUtils;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
import java.nio.charset.StandardCharsets;
@Configuration
public class GatewayFilter implements GlobalFilter, Ordered {
/**
* 全局过滤
* @param exchange
* @param chain
* @return
*/
@Override
public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
// 获取Request、Response对象
ServerHttpRequest request = exchange.getRequest();
ServerHttpResponse response = exchange.getResponse();
// 解决中文乱码问题
HttpHeaders headers = response.getHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
// 打印输出URI
String requestUrl = exchange.getRequest().getURI().getRawPath();
System.out.println(requestUrl);
System.out.println(request.getURI());
// lanjie
String token = request.getHeaders().getFirst("token");
if(StringUtils.isEmpty(token)) {
String msg = "{name:'david'}";
DataBuffer dataBuffer = response.bufferFactory().wrap(msg.getBytes(StandardCharsets.UTF_8));
return response.writeWith(Mono.just(dataBuffer));
}
// 放行
return chain.filter(exchange);
}
/**
* 排序,越小越先执行
* @return
*/
@Override
public int getOrder() {
return 0;
}
}
参考文章