分布式项目搭建

使用idea搭建一个基于springboot的分布式项目。

总体项目目录结构：

 父maven项目：添加公共的依赖，pom如下：

<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>4.0.0modelVersion>
    <modules>
        <module>ordermodule>
        <module>stockmodule>
    modules>
 
    <parent>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-parentartifactId>
        <version>2.3.11.RELEASEversion>
        <relativePath>relativePath>
    parent>
 
    <groupId>com.springcloud.learninggroupId>
    <artifactId>springcloudalibabaartifactId>
    <version>0.0.1-SNAPSHOTversion>
    <name>springcloudalibabaname>
    <description>Spring Cloud Alibabadescription>
    <packaging>pompackaging>
 
    <properties>
        <java.version>1.8java.version>
    properties>
 
    <dependencies>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starterartifactId>
        dependency>
    dependencies>
 
 
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.bootgroupId>
                <artifactId>spring-boot-maven-pluginartifactId>
            plugin>
        plugins>
    build>
 
project>

stock : 库存模块

 pom : 依赖于父模块，添加自己所需的web模块

<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">
    <parent>
        <artifactId>springcloudalibabaartifactId>
        <groupId>com.springcloud.learninggroupId>
        <version>0.0.1-SNAPSHOTversion>
    parent>
    <modelVersion>4.0.0modelVersion>
 
    <artifactId>stockartifactId>
 
 
    <dependencies>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>
 
    dependencies>
 
project>

StockController

package com.springcloud.learning.stock.controller;
 
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
 
@RestController
@RequestMapping("/stock")
public class StockController {
 
    @RequestMapping("reduct")
    public String reduct(){
        System.out.println("扣减库存");
        return "扣减库存";
    }
}

StockApplication

package com.springcloud.learning.stock;
 
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
 
@SpringBootApplication
public class StockApplication {
 
    public static void main(String[] args) {
        SpringApplication.run(StockApplication.class,args);
    }
}

application.yml   ：  设置端口

server:
  port: 8011

order：订单模块

pom ： 依赖于父模块，添加自己所需的web模块。

<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">
    <parent>
        <artifactId>springcloudalibabaartifactId>
        <groupId>com.springcloud.learninggroupId>
        <version>0.0.1-SNAPSHOTversion>
    parent>
    <modelVersion>4.0.0modelVersion>
 
    <artifactId>orderartifactId>
 
    <dependencies>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>
    dependencies>
 
 
project>

 OrderController

package com.springcloud.learning.order.controller;
 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
 
@RestController
@RequestMapping("/order")
public class OrderController {
 
    @Autowired
    private RestTemplate restemplate;
 
    @RequestMapping("/add")
    public String add(){
        System.out.println("下单成功！");
        String msg = restemplate.getForObject("http://localhost:8011/stock/reduct", String.class);
        return "Hello World";
    }
}

OrderApplication

package  com.springcloud.learning.order;
 
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;
 
@SpringBootApplication
public class OrderApplication {
 
    public static void main(String[] args) {
        SpringApplication.run(OrderApplication.class,args);
    }
 
    @Bean
    public RestTemplate restTemplate(RestTemplateBuilder builder){
        RestTemplate restTemplate = builder.build();
        return restTemplate;
    }
 
}

application.yml

server:
  port: 8010

idea 开启多服务启动控制面板：

选择 springboot

 如下图，就能控制多个服务的启动与停止：

备注： 项目中的maven依赖在打开idea时，总是会飘红，观察到本地maven配置中的settings.xml中有两个mirror地址。默认会使用第一个，但是第一个地址是公司内网地址，在家里不能访问。此时注释掉第一个地址，然后刷新maven依赖，使用如下功能重启idea。

maven项目给了我们便利的同时，使我们从海量的jar配置中解放出来，但是各种各样的依赖下载问题也总是让我们感觉到头疼。