一.创建项目
项目总体结构
项目结构如下:
其中, order-service为订单服务, pay-service为支付服务.
pay-service做生产者, order-service做消费者, order-service将会调用pay-service服务.
nacos-demo的pom.xml文件内容如下:
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.forest.xs.sfg</groupId>
<artifactId>nacos-demo</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-parent</artifactId>
<version>2.3.1.RELEASE</version>
</parent>
<modules>
<module>order-service</module>
<module>pay-service</module>
</modules>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
<version>2.2.1.RELEASE</version>
</dependency>
</dependencies>
<properties>
<maven.compiler.source>15</maven.compiler.source>
<maven.compiler.target>15</maven.compiler.target>
</properties>
</project>
pay-service支付服务结构和代码(生产者)
结构
pay-service的pom.xml文件内容:
<?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>nacos-demo</artifactId>
<groupId>com.forest.xs.sfg</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>pay-service</artifactId>
<properties>
<maven.compiler.source>15</maven.compiler.source>
<maven.compiler.target>15</maven.compiler.target>
</properties>
</project>
pay-service的application.yml文件内容:
server:
port: 8080
spring:
application:
name: pay-service
cloud:
nacos:
discovery:
server-addr: 148.70.65.31:8848 # 此处写自己的nacos服务ip与端口
namespace: forest-nacos-demo-zhoujl
group: DEMO
pay-service的启动类(PayServiceApplication.java)代码:
package com.forest.xs.sfg;
/**
* @Author:周建林
* @Time:2021/3/7 0:39
* @Description
*/
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class PayServiceApplication {
public static void main(String[] args) {
SpringApplication.run(PayServiceApplication.class, args);
}
}
pay-service的业务类代码(PayController.java):
package com.forest.xs.sfg.payservice;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @Author:周建林
* @Time:2021/3/7 0:39
* @Description
*/
@RestController
@RequestMapping("/payService")
public class PayController {
@GetMapping("/pay/{money}")
public String pay(@PathVariable Double money) {
return String.format("<span style='color: #00F; font-size: 100px;'>I am payService.</br>I am paying...</br>Pay succefully! %s$.</span>", money);
}
}
order-service订单服务结构和代码(消费者)
结构
order-service的pom.xml文件内容:
<?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>nacos-demo</artifactId>
<groupId>com.forest.xs.sfg</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>order-service</artifactId>
<properties>
<maven.compiler.source>15</maven.compiler.source>
<maven.compiler.target>15</maven.compiler.target>
</properties>
</project>
order-service的application.yml文件内容:
server:
port: 9090
spring:
application:
name: order-service
cloud:
nacos:
discovery:
server-addr: 148.70.65.31:8848
namespace: forest-nacos-demo-zhoujl
group: DEMO
order-service的启动类(OrderServiceApplication.java)代码:
package com.forest.xs.sfg;
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;
/**
* @Author:周建林
* @Time:2021/3/7 0:49
* @Description
*/
@SpringBootApplication
public class OrderServiceApplication {
public static void main(String[] args) {
SpringApplication.run(OrderServiceApplication.class, args);
}
@Bean
@LoadBalanced
public RestTemplate getRestTemplate() {
return new RestTemplate();
}
}
order-service的业务类代码(PayController.java):
package com.forest.xs.sfg.orderservice;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
/**
* @Author:周建林
* @Time:2021/3/7 0:48
* @Description
*/
@RestController
@RequestMapping("/orderService")
public class OrderController {
@Autowired
private RestTemplate restTemplate;
private static final String PAY_SERVICE_NAME = "pay-service";
private static final String PAY_URL = "/payService/pay";
@GetMapping("/payOrder/{money}")
public Object payOrder(@PathVariable Double money) {
String url = new StringBuilder("http://").append(PAY_SERVICE_NAME).append(PAY_URL).append("/").append(money).toString();
return restTemplate.getForObject(url, String.class);
}
}
二.启动生产者和消费者
如图所示, 启动成功后, 两个服务都注册到了nacos: