实操 Spring Cloud GateWay 在业务系统中的应用

近期，公司要将几条老的产品线进行架构改造，基于微服务机制融合成一个平台产品。同时计划进行前后端分离改造。正好借此机会重新梳理一下微服务网关的使用。

网关服务启动

第一步啥也不用想，先把网关服务搭起来再说！
建立一个Maven项目

POM 文件

<?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>cn.seanzhao</groupId>
    <artifactId>gateway</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <spring-cloud.version>Finchley.RC2</spring-cloud.version>
        <spring-boot.version>2.0.2.RELEASE</spring-boot.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring-boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    
    
    
    <repositories>
        <repository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

    <pluginRepositories>
        <pluginRepository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </pluginRepository>
        <pluginRepository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>
</project>

写一个启动类 GatewayApplication.class

package cn.seanzhao;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

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

项目文件结构

D:\code\testProject\gateway>tree /F /a
卷 Data 的文件夹 PATH 列表
卷序列号为 A06A-A21F
D:.
|   gateway.iml
|   pom.xml
|
+---.idea
|   |   $CACHE_FILE$
|   |   .gitignore
|   |   compiler.xml
|   |   encodings.xml
|   |   jarRepositories.xml
|   |   misc.xml
|   |   workspace.xml
|   |
|   \---inspectionProfiles
|           Project_Default.xml
|
+---src
|   +---main
|   |   +---java
|   |   |   \---cn
|   |   |       \---seanzhao
|   |   |               GatewayApplication.java
|   |   |
|   |   \---resources
|   \---test
|       \---java
\---target
    +---classes
    |   \---cn
    |       \---seanzhao
    |               GatewayApplication.class
    |
    \---generated-sources
        \---annotations

D:\code\testProject\gateway>

启动