分布式项目搭建

Posted 2022-08-02 hoho_12

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：

<?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>
    <modules>
        <module>order</module>
        <module>stock</module>
    </modules>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.11.RELEASE</version>
        <relativePath></relativePath>
    </parent>

    <groupId>com.springcloud.learning</groupId>
    <artifactId>springcloudalibaba</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springcloudalibaba</name>
    <description>Spring Cloud Alibaba</description>
    <packaging>pom</packaging>

    <properties>
        <java.version>1.8</java.version>
    </properties>

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


    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </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

<?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">
    <parent>
        <artifactId>springcloudalibaba</artifactId>
        <groupId>com.springcloud.learning</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>stock</artifactId>


    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </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。

<?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">
    <parent>
        <artifactId>springcloudalibaba</artifactId>
        <groupId>com.springcloud.learning</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>order</artifactId>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </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。