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大数据课程K13——Spark的距离度量&&相似度度量

补充:

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-login
          uri: lb://service-login
          predicates:
            - 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 {

    @Autowired
    private 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);
    }

}
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