SpringCloud初体验：四、API GateWay 服务网关

网关服务很多，比如：Zuul、Kong、spring cloud gateway ……，这里不纠结哪种性能好，本次体验是用的 spring cloud gateway

更多网关比较可以了解这篇文章：微服务网关哪家强？一文看懂Zuul, Nginx, Spring Cloud, Linkerd性能差异

配置网关服务步骤：

1、初始化一个 SpringBoot 应用

2、引入相关依赖

<?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>

    <groupId>com.zjj7</groupId>

    <artifactId>gateway_server</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>jar</packaging>

    <name>gateway_server</name>

    <description>Demo project for Spring Boot</description>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>2.0.4.RELEASE</version>

        <relativePath/> <!-- lookup parent from repository -->

    </parent>

    <properties>

        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

        <java.version>1.8</java.version>

    </properties>

    <!--配置仓库-->

    <repositories>

        <repository>

            <id>aliRepository</id>

            <name>aliRepository</name>

            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>

            <snapshots>

                <enabled>false</enabled>

            </snapshots>

        </repository>

    </repositories>

    <!--cloud 引来-->

    <dependencyManagement>

        <dependencies>

            <dependency>

                <groupId>org.springframework.cloud</groupId>

                <artifactId>spring-cloud-dependencies</artifactId>

                <version>Finchley.RELEASE</version>

                <type>pom</type>

                <scope>import</scope>

            </dependency>

        </dependencies>

    </dependencyManagement>

    <dependencies>

        <!--<dependency>-->

            <!--<groupId>org.springframework.boot</groupId>-->

            <!--<artifactId>spring-boot-starter-web</artifactId>-->

        <!--</dependency>-->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-test</artifactId>

            <scope>test</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-gateway</artifactId>

        </dependency>

    </dependencies>

    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

</project>

pom.xml 的配置代码

3、修改配置文件

spring:

  application:

    name: gateway_server

  cloud:

    gateway:

      default-filters:

      routes:

      - id:  user-server

        # lb代表从注册中心获取服务

        uri: lb://user

        predicates:

        # 转发该路径

        - Path=/user/**

        # 带前缀

        filters:

        - StripPrefix=1

      - id:  publish-server

        uri: lb://publish

        predicates:

        - Path=/publish/**

        filters:

        - StripPrefix=1

#服务注册中心端口号

server:

  port: 6400

#服务注册中心实例的主机名、端口

#是否向服务注册中心注册自己

#是否检索服务

#服务注册中心的配置内容，指定服务注册中心的位置

eureka:

  port:

    6110

  instance:

    hostname: localhost

  client:

    register-with-eureka: true

    fetch-registry: true

    serviceUrl:

      defaultZone: http://${eureka.instance.hostname}:${eureka.port}/eureka/

application.yml 的相关配置

这里和其它服务不同的是：启动类上面除了默认注解，无需添加更多

这时，一个简单的网关服务就搭建完了, 启动后所有的 API 就能以网关服务的地址为入口开始访问了

巴特西

SpringCloud初体验：四、API GateWay 服务网关

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