Spring Cloud（2）：搭建Eureka

package org.dreamtech.eureka;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

@SpringBootApplication
@EnableEurekaServer
public class EurekaApplication {

    public static void main(String[] args) {
        SpringApplication.run(EurekaApplication.class, args);
    }

}

server:
  port: 8761
eureka:
  instance:
    hostname: localhost
  client:
    # 声明自己是服务端
    register-with-eureka: false
    fetch-registry: false
    # 注册中心地址
    service-url:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

package org.dreamtech.product.controller;

import org.dreamtech.product.service.ProductService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/product")
public class ProductController {

    private final ProductService productService;

    @Autowired
    public ProductController(ProductService productService) {
        this.productService = productService;
    }

    @RequestMapping("/list")
    public Object list(){
        return productService.getProductList();
    }

    @RequestMapping("/find")
    public Object findById(@RequestParam("id") int id){
        return productService.findById(id);
    }

}

package org.dreamtech.product.service;

import org.dreamtech.product.domain.Product;

import java.util.List;

public interface ProductService {
    List<Product> getProductList();
    Product findById(int id);
}

package org.dreamtech.product.service.impl;

import org.dreamtech.product.domain.Product;
import org.dreamtech.product.service.ProductService;
import org.springframework.stereotype.Service;

import java.util.*;

@Service
public class ProductServiceImpl implements ProductService {
    // 模拟DAO层操作
    private static final Map<Integer, Product> productDao = new HashMap<>();

    static {
        Product p1 = new Product(1, "iPhone1", 1111, 10);
        Product p2 = new Product(2, "iPhone2", 2222, 10);
        Product p3 = new Product(3, "iPhone3", 3333, 10);
        Product p4 = new Product(4, "iPhone4", 4444, 10);
        Product p5 = new Product(5, "iPhone5", 5555, 10);
        Product p6 = new Product(6, "iPhone6", 6666, 10);
        Product p7 = new Product(6, "iPhone7", 7777, 10);
        productDao.put(1, p1);
        productDao.put(2, p2);
        productDao.put(3, p3);
        productDao.put(4, p4);
        productDao.put(5, p5);
        productDao.put(6, p6);
        productDao.put(7, p7);
    }

    @Override
    public List<Product> getProductList() {
        Collection<Product> temp = productDao.values();
        return new ArrayList<>(temp);
    }

    @Override
    public Product findById(int id) {
        return productDao.get(id);
    }
}

package org.dreamtech.product.domain;

import java.io.Serializable;

public class Product implements Serializable {
    //ID
    private int id;
    //商品名称
    private String name;
    //商品价格
    private int price;
    //商品库存
    private int store;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getPrice() {
        return price;
    }

    public void setPrice(int price) {
        this.price = price;
    }

    public int getStore() {
        return store;
    }

    public void setStore(int store) {
        this.store = store;
    }

    public Product(int id, String name, int price, int store) {
        this.id = id;
        this.name = name;
        this.price = price;
        this.store = store;
    }
}

[{
    "id": 1,
    "name": "iPhone1",
    "price": 1111,
    "store": 10
}, {
    "id": 2,
    "name": "iPhone2",
    "price": 2222,
    "store": 10
}, {
    "id": 3,
    "name": "iPhone3",
    "price": 3333,
    "store": 10
}, {
    "id": 4,
    "name": "iPhone4",
    "price": 4444,
    "store": 10
}, {
    "id": 5,
    "name": "iPhone5",
    "price": 5555,
    "store": 10
}, {
    "id": 6,
    "name": "iPhone6",
    "price": 6666,
    "store": 10
}, {
    "id": 6,
    "name": "iPhone7",
    "price": 7777,
    "store": 10
}]

server:
  port: 8771
# 指定注册中心地址
eureka:
  client:
    service-url:
      defaultZone: http://localhost:8761/eureka/
# 服务的名称
spring:
  application:
    name: product-service

  server:
    enable-self-preservation: false