spring cloud alibaba之nacos--服務註冊與發現與服務消費（三）

spring cloud alibaba之nacos–服務註冊與發現與服務消費（三）

1.啓動nacos server

2.服務提供者-provider （tsoft-order）

2.0 整體架構工程目錄

2.1 引入依賴 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>tsoft-parent</artifactId>
        <groupId>com.tsoft</groupId>
        <version>1.0-SNAPSHOT</version>
        <relativePath>../pom.xml</relativePath>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>tsoft-order</artifactId>


    <dependencies>


        <!--spring-boot-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>${spring-boot.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
            <version>${spring-boot.version}</version>
        </dependency>
        <!--nacos-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            <version>${spring-cloud-alibaba.version}</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
            <version>${spring-cloud-alibaba.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
            <version>${spring-cloud.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
            <version>${spring-cloud.version}</version>
        </dependency>

        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
            <version>${spring-cloud-alibaba.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>${httpclient-version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpcore</artifactId>
            <version>${httpcore-version}</version>
        </dependency>


    </dependencies>


    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-deploy-plugin</artifactId>
                <version>${maven-deploy-plugin.version}</version>
                <configuration>
                    <skip>true</skip>
                </configuration>
            </plugin>
        </plugins>
    </build>


</project>

2.2 在 application.properties 中配置 Nacos server 的地址：

server.port=8083
spring.application.name=service-order
spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
management.endpoints.web.exposure.include=*

2.3 通過 Spring Cloud 原生註解 @EnableDiscoveryClient 開啓服務註冊發現功能：

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

}

2.4 增加接口和接口實現方法

• OrderService.java 接口

public interface OrderService {
    @PostMapping("getOrderById")
    public OrdOrder getOrderById(@RequestParam(name="id") String id);
}

• OrderServiceImpl.java 接口實現

@RestController
public class OrderServiceImpl implements OrderService {
    @Override
    public OrdOrder getOrderById(String id) {
        OrdOrder order=new OrdOrder();
        order.setId(id);
        order.setOrderCode(id+"--code--");
        order.setOrderDes("你好");
        return order;
    }
}

• OrdOrder.java 實體VO對象

public class OrdOrder implements Serializable {

    private  String id;

    private  String orderCode;

    private  String orderDes;

    public String getOrderDes() {
        return orderDes;
    }

    public void setOrderDes(String orderDes) {
        this.orderDes = orderDes;
    }

    public String getId() {
        return id;
    }

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

    public String getOrderCode() {
        return orderCode;
    }

    public void setOrderCode(String orderCode) {
        this.orderCode = orderCode;
    }

    @Override
    public String toString() {
        return "OrdOrder{" +
                "id='" + id + '\'' +
                ", orderCode='" + orderCode + '\'' +
                ", orderDes='" + orderDes + '\'' +
                '}';
    }
}

2.5 啓動該項目，訪問nocos監控頁面

可以看見，service-order 服務已經註冊進來。

2.6 Postman測試該接口

3.服務消費者-consumer （tsoft-user）

3.0 tsoft-user 作服務提供者也作消費者
3.1 nacos消費服務有兩種方式

第一種是： LoadBalanceClient 和 RestTemolate 結合的方式來訪問（不推薦）
第二種是：使用Feign客戶端來調用（類似於之前的Eurake的調用方式）（推薦）

3.1 引入依賴 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>tsoft-parent</artifactId>
        <groupId>com.tsoft</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>tsoft-user</artifactId>


    <dependencies>

        <!--依賴項目模塊-->
        <dependency>
            <groupId>com.tsoft</groupId>
            <artifactId>tsoft-order</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

        <!--spring-boot-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>${spring-boot.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
            <version>${spring-boot.version}</version>
        </dependency>
        <!--nacos-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            <version>${spring-cloud-alibaba.version}</version>
        </dependency>


        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
            <version>${spring-cloud.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
            <version>${spring-cloud.version}</version>
        </dependency>

        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
            <version>${spring-cloud-alibaba.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>${httpclient-version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpcore</artifactId>
            <version>${httpcore-version}</version>
        </dependency>

    </dependencies>


    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-deploy-plugin</artifactId>
                <version>${maven-deploy-plugin.version}</version>
                <configuration>
                    <skip>true</skip>
                </configuration>
            </plugin>
        </plugins>
    </build>


</project>

3.2 application.properties

spring.application.name=service-user
server.port=8082
#spring.cloud.nacos.discovery.group=GROUP_USER
management.endpoints.web.exposure.include=*
spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
spring.cloud.nacos.server-addr=127.0.0.1:8848

3.3 feign客戶端

@FeignClient(name = "service-order") //被調用的服務
public interface OrderFeign extends OrderService {
}

3.4 測試controller

@RestController
public class UserController {
    @Autowired
    OrderFeign orderFeign;

    @RequestMapping("/getOrderById")
    public OrdOrder getOrderById(){
        OrdOrder orderById = orderFeign.getOrderById("1");
        return  orderById;
    }
}

3.5 使用註解 @EnableFeignClients 發現feign客戶端

@EnableDiscoveryClient
@SpringBootApplication
@EnableFeignClients
public class UserApp {

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

3.6 啓動 UserApp.java,可以看到service-user也註冊進來

3.7 查看消費訂閱情況,可見service-order服務，被service-user訂閱了

3.8 測試調用接口，正確返回值，success

補充：父工程管理版本

    <properties>
        <spring.version>5.0</spring.version>
        <spring-boot.version>2.1.7.RELEASE</spring-boot.version>
        <spring-cloud.version>2.1.3.RELEASE</spring-cloud.version>
        <spring-cloud-alibaba.version>2.1.1.RELEASE</spring-cloud-alibaba.version>
        <httpclient-version>4.5.10</httpclient-version>
        <httpcore-version>4.4.10</httpcore-version>

        <!-- Maven Plugin Versions -->
        <maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
        <maven-deploy-plugin.version>2.8.2</maven-deploy-plugin.version>
        <maven-surefire-plugin.version>2.21.0</maven-surefire-plugin.version>
        <gmavenplus-plugin.version>1.6</gmavenplus-plugin.version>
        <jacoco.version>0.8.3</jacoco.version>
    </properties>

github源碼地址; tag–v0.1.1
https://github.com/liupantao/tsoft-parent/tree/v0.1.1