Spring请求数据

网站登录nacos:

数据库创表nacos   utf-8

网页输入:localhost:8848/nacos(先打开nacos再登录)

文件结构

 步骤：

1.在pom.xml文件中分别配置Maven依赖

    <parent>
        <artifactId>spring-boot-starter-parent</artifactId>
        <groupId>org.springframework.boot</groupId>
        <version>2.3.2.RELEASE</version>
    </parent>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>2.2.6.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Hoxton.SR9</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>


    <dependencies>
        <!--        springboot启动依赖-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>


        <!--        服务的注册与发现的场景依赖-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

        <!--        端点监控-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
    </dependencies>

2.在resources文件夹下创建application.yml

spring:
  application:
    name: cloud-goods(文件名)
  cloud:
    nacos:
      discovery:
        server-addr: localhost:8848
        username: nacos
        password: nacos
--server：    //分类端口
	port：9001

3.将接口放入controlller下接口类

import java.util.HashMap;
import java.util.Map;
@RestController
@RequestMapping("/goods")
public class GoodsAppController {
@RequestMapping("/findById/{spuId}")
    public Map findById(@PathVariable String spuId){
        return new HashMap(){{
            put("name","小米");
            put("price","199");
        }};
    }

}

注册:

GoodsApp

package com.ldl;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

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

OrderApp

package com.ldl;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;

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

    @Bean
    @LoadBalanced
    public RestTemplate restTemplate(){
        return new RestTemplate() ;
    }
}

实现:

OderController

package com.ldl.com.ldl.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.util.Map;

@RestController
@RequestMapping("/order")
public class OderController {
    @Autowired
    private RestTemplate restTemplate ;
    @RequestMapping("/save")
    public Map save(){
        String url = "http://cloud-goods/goods/findById/1" ;
        Map goodsInfo = restTemplate.getForObject(url,Map.class) ;
        System.out.println(goodsInfo);
        return goodsInfo;
    }
}

idea启动GoodsApp和Order

网页输入localhost:9001/order/save(按自己取的名字输入)