SpringCloud - 微服务之多模块化(一)-阿里云开发者社区

多模块

product-server 所有业务逻辑 controller、service……

product-client 对外暴露的接口、商品列表、扣库存。

product-common 公用的对象，既能被外部服务调用，也能被内部其他模块使用。

Ps：多模块最重要的难点就是 pom.xml 配置的问题。

Product 微服务项目

All Pom.xml

<?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>com.imooc</groupId>
  <artifactId>product</artifactId>
  <version>0.0.1-SNAPSHOT</version>
    <modules>
        <module>common</module>
        <module>server</module>
        <module>client</module>
    </modules>
    <packaging>pom</packaging>
  <name>product</name>
  <description>Demo project for Spring Boot</description>
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.0.M3</version>
    <relativePath/> <!-- lookup parent from repository -->
  </parent>
  <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.M2</spring-cloud.version>
        <product-common.version>0.0.1-SNAPSHOT</product-common.version>
  </properties>
  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-dependencies</artifactId>
        <version>${spring-cloud.version}</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
            <dependency>
                <groupId>com.imooc</groupId>
                <artifactId>product-common</artifactId>
                <version>${product-common.version}</version>
            </dependency>
      <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-openfeign</artifactId>
        <version>2.0.0.M3</version>
      </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>

Server

Pom.xml

<?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>product</artifactId>
        <groupId>com.imooc</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>product-server</artifactId>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <!-- 为了获取 common 的类 -->
        <dependency>
            <groupId>com.imooc</groupId>
            <artifactId>product-common</artifactId>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

package com.imooc.product.controller;
import com.imooc.product.VO.ProductInfoVO;
import com.imooc.product.VO.ProductVO;
import com.imooc.product.VO.ResultVO;
import com.imooc.product.dataobject.ProductCategory;
import com.imooc.product.dataobject.ProductInfo;
import com.imooc.product.service.CategoryService;
import com.imooc.product.service.ProductService;
import com.imooc.product.utils.ResultVOUtil;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
import com.imooc.product.common.DecreaseStockInput;
import com.imooc.product.common.ProductInfoOutput;
/**
 * 商品
 */
@RestController
@RequestMapping("/product")
public class ProductController {
    @Autowired
    private ProductService productService;
    @Autowired
    private CategoryService categoryService;
    /**
     * 1. 查询所有在架的商品
     * 2. 获取类目type列表
     * 3. 查询类目
     * 4. 构造数据
     */
    @GetMapping("/list")
    public ResultVO<ProductVO> list() {
        //1. 查询所有在架的商品
        List<ProductInfo> productInfoList = productService.findUpAll();
        //2. 获取类目type列表
        List<Integer> categoryTypeList = productInfoList.stream()
                .map(ProductInfo::getCategoryType)
                .collect(Collectors.toList());
        //3. 从数据库查询类目
        List<ProductCategory> categoryList = categoryService.findByCategoryTypeIn(categoryTypeList);
        //4. 构造数据
        List<ProductVO> productVOList = new ArrayList<>();
        for (ProductCategory productCategory: categoryList) {
            ProductVO productVO = new ProductVO();
            productVO.setCategoryName(productCategory.getCategoryName());
            productVO.setCategoryType(productCategory.getCategoryType());
            List<ProductInfoVO> productInfoVOList = new ArrayList<>();
            for (ProductInfo productInfo: productInfoList) {
                if (productInfo.getCategoryType().equals(productCategory.getCategoryType())) {
                    ProductInfoVO productInfoVO = new ProductInfoVO();
                    BeanUtils.copyProperties(productInfo, productInfoVO);
                    productInfoVOList.add(productInfoVO);
                }
            }
            productVO.setProductInfoVOList(productInfoVOList);
            productVOList.add(productVO);
        }
        return ResultVOUtil.success(productVOList);
    }
    /**
     * 获取商品列表(给订单服务用的)
     * @param productIdList
     * @return
     */
    @PostMapping("/listForOrder")
    public List<ProductInfoOutput> listForOrder(@RequestBody List<String> productIdList) {
        return productService.findList(productIdList);
    }
    @PostMapping("/decreaseStock")
    public void decreaseStock(@RequestBody List<DecreaseStockInput> decreaseStockInputList) {
        productService.decreaseStock(decreaseStockInputList);
    }
}

这里能拿到 common 模块的类，是因为在 pom.xml 里引入了 common。

package com.imooc.product;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@SpringBootApplication
@EnableDiscoveryClient
public class ProductApplication {
  public static void main(String[] args) {
    SpringApplication.run(ProductApplication.class, args);
  }
}

SpringCloud - 微服务之多模块化(一)

Product 微服务项目

Server

微服务

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