springcloud2 gateway 之二：转发调用eureka客户端服务

一时失言乱红尘 2022-03-09 08:50 262阅读 0赞

gateway不仅能转发api接口请求，也能转发页面请求，返回页面。

springcloud2 gateway 之一：简单样例  
[https://blog.csdn.net/haveqing/article/details/88424598][https_blog.csdn.net_haveqing_article_details_88424598]

springcloud eureka注册中心搭建  
[https://blog.csdn.net/haveqing/article/details/86479813][https_blog.csdn.net_haveqing_article_details_86479813]

eureka 客户端springcloud service  
[https://blog.csdn.net/haveqing/article/details/88427366][https_blog.csdn.net_haveqing_article_details_88427366]

文件结构

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hhdmVxaW5n_size_16_color_FFFFFF_t_70][]

**一、pom.xml**

<?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.0.5.RELEASE</version>
            <relativePath/> 
        </parent>
        <groupId>com.urthink.upfs</groupId>
        <artifactId>springcloud-gateway</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>springcloud-gateway</name>
        <description>springcloud-gateway project for Spring Boot</description>
    
        <properties>
            <java.version>1.8</java.version>
            <spring-cloud.version>Finchley.SR1</spring-cloud.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-gateway</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>
    
        <dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>${spring-cloud.version}</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
        <repositories>
            <repository>
                <id>spring-milestones</id>
                <name>Spring Milestones</name>
                <url>https://repo.spring.io/milestone</url>
            </repository>
        </repositories>
    
    </project>

**二、SpringcloudGatewayApplication.java**

package com.urthink.upfs.springcloudgateway;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    /**
     * http://localhost:8081/demo/test1
     * http://localhost:8080/app1/demo/test1
     * http://localhost:8082/demo/test1
     * http://localhost:8080/app2/demo/test1
     */
    @SpringBootApplication
    public class SpringcloudGatewayApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(SpringcloudGatewayApplication.class, args);
        }
    
    }

**三、application.yml**

server:
      port: 8080
    
    eureka:
      instance:
        prefer-ip-address: true
        #Eureka客户端向服务端发送心跳的时间间隔，单位为秒（客户端告诉服务端自己会按照该规则），默认30
        lease-renewal-interval-in-seconds: 10
        #Eureka服务端在收到最后一次心跳之后等待的时间上限，单位为秒，超过则剔除（客户端告诉服务端按照此规则等待自己），默认90
        lease-expiration-duration-in-seconds: 12
      client:
        registry-fetch-interval-seconds: 10 #eureka client刷新本地缓存时间，默认30
        serviceUrl:
          defaultZone: http://localhost:8761/eureka/
    
    spring:
      application:
        name: gateway
      cloud:
        gateway:
          routes:
            #netty 路由过滤器，http或https开头
          - id: app1-route
            uri: http://localhost:8081
            predicates:
            - Path=/app1/**
            filters:
              #转发请求时去掉1级前缀
            - StripPrefix=1
            #LoadBalancerClient负载均衡过滤器（整合eureka注册中心），lb开头
          - id: app2-route
            uri: lb://springcloud-service
            predicates:
            - Path=/app2/**
            filters:
            #转发请求时去掉1级前缀
            - StripPrefix=1

**四、访问**

http://localhost:8082/demo/test1  
http://localhost:8080/app2/demo/test1

[https_blog.csdn.net_haveqing_article_details_88424598]: https://blog.csdn.net/haveqing/article/details/88424598
[https_blog.csdn.net_haveqing_article_details_86479813]: https://blog.csdn.net/haveqing/article/details/86479813
[https_blog.csdn.net_haveqing_article_details_88427366]: https://blog.csdn.net/haveqing/article/details/88427366
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