微服务基础：SpringCloud-Gateway-创建&测试API网关

 

 

  

<?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 https://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>2.1.8.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.atguigu.gulimall</groupId>
    <artifactId>gulimall-gateway</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>gulimall-gateway</name>
    <description>API网关</description>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Greenwich.SR3</spring-cloud.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.atguigu.gulimall</groupId>
            <artifactId>gulimall-common</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </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>

package com.atguigu.gulimall.gateway;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.context.annotation.Bean;

import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.reactive.CorsWebFilter;
import org.springframework.web.cors.reactive.UrlBasedCorsConfigurationSource;


/**
 * 1、开启服务注册发现
 *  (配置nacos的注册中心地址)
 * 2、编写网关配置文件
 */

@EnableDiscoveryClient
@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})
public class GulimallGatewayApplication {

    public static void main(String[] args) {
        SpringApplication.run(GulimallGatewayApplication.class, args);
    }

}

application.properties（配置了注册中心地址）

spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
spring.application.name=gulimall-gateway
server.port=88

 

bootstrap.properties（配置了配置中心内容）

spring.application.name=gulimall-coupon

spring.cloud.nacos.config.server-addr=127.0.0.1:8848
spring.cloud.nacos.config.namespace=b5d62415-0dea-4747-a65d-874cc6203bf2

运行，测试一下：

 另外：由于网关没有使用数据库，但是公共common导入了mybatis的内容，所以需要在网关中排出掉。可以在pox.xml中设置，也可以在main函数所在类中排除。

新建一个application.yml，在里面写入路由规则，项目上线后可以写入到配置中心

spring:
  cloud:
    gateway:
      routes:
#        - id: test_route
#          uri: https://www.baidu.com
#          predicates:
#            - Query=url,baidu
#
#        - id: qq_route
#          uri: https://www.qq.com
#          predicates:
#            - Query=url,qq

        - id: product_route
          uri: lb://gulimall-product
          predicates:
            - Path=/api/product/**
          filters:
            - RewritePath=/api/(?<segment>.*),/$\{segment}

        - id: third_party_route
          uri: lb://gulimall-third-party
          predicates:
            - Path=/api/thirdparty/**
          filters:
            - RewritePath=/api/thirdparty/(?<segment>.*),/$\{segment}

        - id: member_route
          uri: lb://gulimall-member
          predicates:
            - Path=/api/member/**
          filters:
            - RewritePath=/api/(?<segment>.*),/$\{segment}

        - id: ware_route
          uri: lb://gulimall-ware
          predicates:
            - Path=/api/ware/**
          filters:
            - RewritePath=/api/(?<segment>.*),/$\{segment}

        - id: admin_route
          uri: lb://renren-fast
          predicates:
            - Path=/api/**
          filters:
            - RewritePath=/api/(?<segment>.*),/renren-fast/$\{segment}



  ## 前端项目，/api
## http://localhost:88/api/captcha.jpg   http://localhost:8080/renren-fast/captcha.jpg
## http://localhost:88/api/product/category/list/tree http://localhost:10000/product/category/list/tree