Springclould整合nacos实现服务间调用

   理论就不多说了，个人简单点理解就是，一个项目分成了多个服务模块，相互不影响开发运行，但又能相互调用。

1.1直接上效果

   项目目录结构

   服务与服务之间调用结果

2.1先建父工程

       先建父工程，之后每个模块都继承他就可以了。父工程就只有pom.xml文件

<?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> <artifactId>nacosdemo</artifactId> <groupId>com.tao</groupId> <version>1.0-SNAPSHOT</version> <packaging>pom</packaging> <!-- 所有的springboot的工程都以spring父工程为父工程 --> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.3.2.RELEASE</version> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> <spring-boot.version>2.3.2.RELEASE</spring-boot.version> <spring-cloud.version>Hoxton.SR8</spring-cloud.version> <nacos.version>2.2.5.RELEASE</nacos.version> </properties> <modules> <module>provider</module> <module>consumer</module> <module>consumer1</module> </modules> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-openfeign</artifactId> </dependency> <!-- 集成commons工具类 spring-cloud Hoxton.SR8--> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.4</version> </dependency> <!-- 集成lombok 框架 --> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </dependency> <!-- 集成redis --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId> </dependency> <!-- 集成aop --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-aop</artifactId> </dependency> <!-- 集成web--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- springboot整合activemq --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-activemq</artifactId> </dependency> <!-- 集成发送邮件--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-mail</artifactId> </dependency> <!-- 集成mysql --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.0</version> </dependency> <dependency> <groupId>tk.mybatis</groupId> <artifactId>mapper</artifactId> <version>3.3.7</version> </dependency> <!-- 阿里巴巴数据源 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.14</version> </dependency> <!-- httpclient --> <dependency> <groupId>commons-httpclient</groupId> <artifactId>commons-httpclient</artifactId> <version>3.1</version> </dependency> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.30</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> </dependency> <dependency> <groupId>commons-net</groupId> <artifactId>commons-net</artifactId> <version>3.3</version> </dependency> </dependencies> <dependencyManagement> <dependencies> <!-- nacos --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-dependencies</artifactId> <version>${spring-boot.version}</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-alibaba-dependencies</artifactId> <version>${nacos.version}</version> <type>pom</type> <scope>import</scope> </dependency> <!-- nacos --> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> <repositories> <repository> <id>spring-milestones</id> <name>Spring Milestones</name> <url>https://repo.spring.io/milestone</url> <snapshots> <enabled>false</enabled> </snapshots> </repository> </repositories> </project>

2.2创建被调用者（提供者）provider模块

2.2.1先导pom.xml依赖

<?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>
    <parent>
        <artifactId>nacosdemo</artifactId>
        <groupId>com.tao</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <artifactId>provider</artifactId>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

　　注意要加入上面建的父类依赖哈<parent>**********</parent>

2.2.2 配置application.yml

spring:
  application:
    name: provider
  cloud:
    nacos:
      discovery:
        server-addr: 10.1.107.50:8848
server:
  port: 8001

2.2.3建个Controller，可给别的模块调用

package com.xiaow.test.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class TestController {
    @GetMapping("/testnacos")
    public String test() {
        return  "恭喜你，调用成功8001";
    }
}

2.2.4 建个启动类

 

package com.xiaow.test;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

@SpringBootApplication
@EnableDiscoveryClient
public class Provider8001 {
    public static void main(String[] args){
        SpringApplication.run(Provider8001.class,args);
    }


}

　　好了，一个模块完成，其他模块也大致这样子创建

3.1 创建调用者（消费者）consumer模块(步骤同2)

    3.1先导pom.xml依赖

<?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>nacosdemo</artifactId>
        <groupId>com.tao</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>consumer</artifactId>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
    <dependencies>
    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-openfeign</artifactId>
    </dependency>
    </dependencies>
</project>

　　3.2，配置aplication.yml文件

spring:
  application:
    name: consumer
  cloud:
    nacos:
      discovery:
        server-addr: 10.1.107.50:8848
server:
  port: 9001

　　3.3，创建service,这很关键，能不能调用服务就看他的了

package com.taojunrui.consumer.service;

import com.taojunrui.consumer.service.Impl.TestServiceImpl;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;

@FeignClient(name="provider",fallback = TestServiceImpl.class)
public interface TestService {
    @GetMapping("/testnacos")
    public String test();
}

注意@FeignClient(name="provider"，这个name就是我们想要调用模块的名称，

  @GetMapping("/testnacos")
  public String test()这两个要跟被调用的模块一样的，不然调用不了

       3.4，创建controller

@RestController
public class TestController { @Autowired TestService testService; @GetMapping("/9001test8001") public String consumertest(){ return testService.test(); } }

3.5，创建启动类Consumer9001

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.openfeign.EnableFeignClients;

@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
public class Consumer9001 {
    public static void main(String[] args){
        SpringApplication.run(Consumer9001.class,args);
    }
}

　　4.1启动上面两个模块，在nacos可以看到启动的服务

5.1 测试成功

ok,前提是先装nacos哈