multi-service-demo模板项目创建

<modelVersion>4.0.0</modelVersion>
<groupId>ltd.newbee.cloud</groupId>
<artifactId>spring-cloud-alibaba-multi-service-demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>spring-cloud-alibaba-multi-service-demo</name>
<packaging>pom</packaging>
<description>Spring Cloud Alibaba Demo</description>
<modules>
  <module>goods-service-demo</module>
  <module>shopcart-service-demo</module>
  <module>order-service-demo</module>
</modules>

package ltd.goods.cloud.newbee.controller;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class NewBeeCloudGoodsAPI {

    @Value("${server.port}")
    private String applicationServerPort; // 获取当前应用的启动端口

    @GetMapping("/goods/{goodsId}")
    public String goodsDetail(@PathVariable("goodsId") int goodsId) {
        // 根据id查询商品并返回调用端
        if (goodsId < 1 || goodsId > 100000) {
            return "查询商品为空，当前服务的端口号为：" + applicationServerPort;
        }
        String goodsName = "商品" + goodsId;
        // 返回信息给调用端
        return goodsName + "，当前服务的端口号为：" + applicationServerPort;
    }
}

package ltd.shopcart.cloud.newbee.controller;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class NewBeeCloudShopCartAPI {

    @Value("${server.port}")
    private String applicationServerPort; // 读取当前应用的启动端口

    @GetMapping("/shop-cart/{cartId}")
    public String cartItemDetail(@PathVariable("cartId") int cartId) {
        // 根据id查询商品并返回调用端
        if (cartId < 0 || cartId > 100000) {
            return "查询购物项为空，当前服务的端口号为：" + applicationServerPort;
        }

        String cartItem = "购物项" + cartId;
        // 返回信息给调用端
        return cartItem + ", 当前服务的端口号为：" + applicationServerPort;
    }
}

package ltd.order.cloud.newbee.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;

@RestController
public class NewBeeCloudOrderAPI {

    @Resource
    private RestTemplate restTemplate;

    // 商品服务调用地址
    private final String CLOUD_GOODS_SERVICE_URL =
            "http://newbee-cloud-goods-service";

    // 购物车服务调用地址
    private final String CLOUD_SHOPCART_SERVICE_URL =
            "http://newbee-cloud-shopcart-service";

    @GetMapping("/order/saveOrder")
    public String saveOrder(@RequestParam("cartId") int cartId,
                            @RequestParam("goodsId") int goodsId) {
        // 简单地模拟下单流程，包括服务间的调用流程。后续与 OpenFeign 相关的改造和优化
        // 将基于当前项目

        // 调用商品服务
        String goodsResult = restTemplate.getForObject(CLOUD_GOODS_SERVICE_URL
                + "/goods/" + goodsId, String.class);

        // 调用购物车服务
        String cartResult = restTemplate.getForObject(CLOUD_SHOPCART_SERVICE_URL
                + "/cart/" + cartId, String.class);
        SERVICE_URL + "/shop-cart/" + cartId, String.class);

        // 执行下单逻辑

        return "success! goodsResult={" + goodsResult + "},cartResult={" +
                cartResult + "}";
    }
}

http://localhost:8117/order/saveOrder?cartId=13U&goodsId=2022