spring cloud整合spring boot，整合nacos、gateway、open-feign等组件

补充：

想看具体详情的可以看我的github链接：codeking01/platform-parent: spring cloud整合spring boot、nacos、gateway、open feign等组件 (github.com)

由于我升级了jdk17，所以用上了spring boot 3.0.2了。

踩坑无数，一堆无用文章，写来写去，本文主要是提供给有基础的开发者再次快速搭建使用（确定版本）

如果你是要使用spring官方的一套，本文不太适用，参考这个：https://start.spring.io/

如果是 阿里巴巴那一套，本文是可以的，记住两个很重要的网址： 

1.版本说明 · alibaba/spring-cloud-alibaba Wiki (github.com)

2.Cloud Native App Initializer (aliyun.com)

推荐从第二个进去，需要什么就选择什么，然后再将里面的版本号复制出来就行。

我目前搭建的版本是：

spring boot 2.6.13

<spring-boot.version>2.6.13</spring-boot.version>
<spring-cloud-alibaba.version>2021.0.5.0</spring-cloud-alibaba.version>
<spring-cloud.version>2021.0.5</spring-cloud.version>

几个需要注意的点，如果是想要配置网关的时候，需要使用使用 `lb:服务名称`

比如：

      routes:- id: service-loginuri: lb://service-loginpredicates:- Path=/admin/**

那么需要记得引入：

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

整体的pom文件如下：

<?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>outfox.ead</groupId><artifactId>platform</artifactId><version>1.0-SNAPSHOT</version><packaging>pom</packaging><modules><module>service</module><module>server-gateway</module><module>service-client</module></modules><properties><java.version>1.8</java.version><maven.compiler.source>8</maven.compiler.source><maven.compiler.target>8</maven.compiler.target><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><spring-boot.version>2.6.13</spring-boot.version><spring-cloud-alibaba.version>2021.0.5.0</spring-cloud-alibaba.version><spring-cloud.version>2021.0.5</spring-cloud.version></properties><dependencies><!--<dependency>--><!--    <groupId>org.springframework.boot</groupId>--><!--    <artifactId>spring-boot-starter-jdbc</artifactId>--><!--</dependency>--><!--<dependency>--><!--    <groupId>org.springframework.boot</groupId>--><!--    <artifactId>spring-boot-starter-web</artifactId>--><!--</dependency>--><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-gateway</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-openfeign</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-loadbalancer</artifactId></dependency><!--<dependency>--><!--    <groupId>com.mysql</groupId>--><!--    <artifactId>mysql-connector-j</artifactId>--><!--    <scope>runtime</scope>--><!--</dependency>--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-configuration-processor</artifactId><optional>true</optional></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies><dependencyManagement><dependencies><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.83_noneautotype</version></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-dependencies</artifactId><version>${spring-boot.version}</version><type>pom</type><scope>import</scope></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-alibaba-dependencies</artifactId><version>${spring-cloud-alibaba.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>3.8.1</version><configuration><source>1.8</source><target>1.8</target><encoding>UTF-8</encoding></configuration></plugin><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><version>${spring-boot.version}</version><configuration><mainClass>com.example.demo.DemoApplication</mainClass><skip>true</skip></configuration><executions><execution><id>repackage</id><goals><goal>repackage</goal></goals></execution></executions></plugin></plugins></build>
</project>

需要注意： 

这个远程调用的时候，需要使用异步非阻塞，我写的如下：

两种都可以

package outfox.ead.controller;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import outfox.ead.LoginFeignClient;import java.util.concurrent.CompletableFuture;@RestController
@RequestMapping("/kolPlatform")
public class userController {@Autowiredprivate LoginFeignClient loginFeignClient;@RequestMapping("/kol-platform/login")public void getLogin(){//loginFeignClient.getLogin();System.out.println("kol-platform Login~~~~~~~~~~~");//CompletableFuture.supplyAsync(() -> {//    loginFeignClient.getLogin();//    return null;//});CompletableFuture.runAsync(loginFeignClient::getLogin);}}