Spring Cloud 入门 -- 搭建Eureka注册中心实现服务者与消费者的服务调用_eureka 注册中心调用服务

4.0.0@Data//支持链式编程4.0.0server:port: 7001。

2401_87167572

1235人浏览 · 2024-09-17 20:18:03

2401_87167572 · 2024-09-17 20:18:03 发布

<groupId>org.example</groupId>
<artifactId>spring_cloud</artifactId>
<version>1.0-SNAPSHOT</version>
<modules>
    <module>springcloud-api</module>
    <module>springcloud-provider</module>
    <module>springcloud-eureka</module>
    <module>springcloud-consumer</module>
</modules>


<!-- 打包方式为 pom -->
<packaging>pom</packaging>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <junit.version>4.12</junit.version>
    <log4j.version>1.2.17</log4j.version>
    <lombok.version>1.16.18</lombok.version>
</properties>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-alibaba-dependencies</artifactId>
            <version>0.2.0.RELEASE</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        <!--springCloud的依赖-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>Greenwich.SR1</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        <!--SpringBoot-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-dependencies</artifactId>
            <version>2.1.4.RELEASE</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        <!--数据库-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.47</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.10</version>
        </dependency>
        <!--SpringBoot 启动器-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.2</version>
        </dependency>
        <!--日志测试~-->
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-core</artifactId>
            <version>1.2.3</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>${junit.version}</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>${lombok.version}</version>
        </dependency>
    </dependencies>
</dependencyManagement>


#### ⌚实体类模块


**pom.xml**

<?xml version="1.0" encoding="UTF-8"?>

spring_cloud
org.example
1.0-SNAPSHOT

4.0.0

<artifactId>springcloud-api</artifactId>

<properties>
    <maven.compiler.source>8</maven.compiler.source>
    <maven.compiler.target>8</maven.compiler.target>
</properties>

<dependencies>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
    </dependency>
</dependencies>


**Dept实体类**

package com.wanshi.springcloud.entity;

import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.experimental.Accessors;

@Data
@NoArgsConstructor
//支持链式编程
@Accessors(chain = true)
public class Dept {

private Integer dept_noid;

private String dept_name;

private String db_source;

}


#### ⌚注册中心模块


**pom.xml**

<?xml version="1.0" encoding="UTF-8"?>

spring_cloud
org.example
1.0-SNAPSHOT

4.0.0

<artifactId>springcloud-eureka</artifactId>

<dependencies>
    <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-eureka-server -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-eureka-server</artifactId>
        <version>1.4.6.RELEASE</version>
    </dependency>
    <!-- 热部署工具 -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
    </dependency>
</dependencies>


**application.yml**

server:
port: 7001

eureka 配置

eureka:
instance:
hostname: localhost # eureka 服务端的实例名称
client:
register-with-eureka: false # 是否向 eureka 注册自己，不注册自己
fetch-registry: false # fetch-registry 如果为false，表示自己为注册中心
service-url: # 将默认的url去掉，替换为自己的，监控页面
defaultZone: http:// ${eureka.instance.hostname}:$ {server.port}/eureka/


**启动类**

package com.wanshi.springcloud;

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

@SpringBootApplication
// EnableEurekaServer 启动Eureka服务
@EnableEurekaServer
public class EurekaServerMainApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaServerMainApplication.class, args);
}
}


#### ⌚服务提供者模块


**pom.xml**

    <!-- Eureka -->
    <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-eureka -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-eureka</artifactId>
        <version>1.4.6.RELEASE</version>
    </dependency>

    <!-- actuator 监控中心 -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>


    <!-- 引入实体类 -->
    <dependency>
        <groupId>org.example</groupId>
        <artifactId>springcloud-api</artifactId>
        <version>1.0-SNAPSHOT</version>
    </dependency>
    <!-- junit -->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <scope>test</scope>
    </dependency>

    <!-- mysql -->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency>

    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid</artifactId>
    </dependency>

    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-core</artifactId>
    </dependency>

    <dependency>
        <groupId>org.mybatis.spring.boot</groupId>
        <artifactId>mybatis-spring-boot-starter</artifactId>
    </dependency>

    <!-- test -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-test</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <!-- jetty -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-jetty</artifactId>
    </dependency>

    <!-- 热部署工具 -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-jdbc</artifactId>
    </dependency>

</dependencies>


**application.yml**

server:
port: 8001
servlet:
context-path: /springcloud-provider-dept/

spring:
application:
name: SpringCloudProviderDept
datasource:
url: jdbc:mysql://localhost:3306/db_spring_cloud01
username: root
password: 111111
driver-class-name: com.mysql.jdbc.Driver

Eureka的配置，服务注册到那里

eureka:
client:
service-url:
defaultZone: http://localhost:7001/eureka/
instance:
instance-id: springcloud-provider-dept8001 # 修改 Eureka上的默认描述信息

info:
app.name: wanshi-springcloud
company.name: blog.wanshi.com


**DeptController**

package com.wanshi.springcloud.controller;

import com.wanshi.springcloud.entity.Dept;
import com.wanshi.springcloud.service.DeptService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping(“/dept/”)
public class DeptController {

@Autowired
private DeptService deptService;

@GetMapping("list")
public List<Dept> list() {
    return deptService.list();
}

@PostMapping("insert")
public Integer insert(@RequestBody Dept param) {
    return deptService.insert(param);
}

@PostMapping("get/{id}")
public Dept get(@PathVariable("id") Integer id) {
    Dept param = new Dept();
    param.setDept\_noid(id);
   return deptService.get(param);
}

}


#### ⌚服务消费者模块


**pom.xml**

    <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-ribbon -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-ribbon</artifactId>
        <version>1.4.6.RELEASE</version>
    </dependency>

    <!-- Eureka -->
    <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-eureka -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-eureka</artifactId>
        <version>1.4.6.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>org.example</groupId>
        <artifactId>springcloud-api</artifactId>
        <version>1.0-SNAPSHOT</version>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <!-- 热部署工具 -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
    </dependency>

</dependencies>


**application.yml**

server:
port: 80

Eureka配置

eureka:
client:
register-with-eureka: false # 不向注册中心注册自己
service-url:
defaultZone: http://localhost:7001/eureka/


**ConfigBean配置**

package com.wanshi.springcloud.config;

import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;

@Configuration
public class ConfigBean {

@Bean
public RestTemplate getRestTemplate() {
    return new RestTemplate();
}

}


**DeptConsumerController**

package com.wanshi.springcloud.controller;

import com.wanshi.springcloud.entity.Dept;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;

import java.util.List;

@RestController
@CrossOrigin
@RequestMapping(“/consumer/dept/”)
public class DeptConsumerController {

@Autowired
private RestTemplate restTemplate;

private static final String REST_URL_PREFIX = "http://localhost:8001/springcloud-provider-dept";

@GetMapping("get/{id}")
public Integer get(@PathVariable("id") Integer id) {
    return restTemplate.getForObject(REST_URL_PREFIX + "/dept/get/" + id, Integer.class);
}

@GetMapping("list")
public List<Dept> list() {
    return restTemplate.getForObject(REST_URL_PREFIX + "/dept/list", List.class);
}

@PostMapping("insert")
public Integer insert(@RequestBody Dept param) {
    return restTemplate.patchForObject(REST_URL_PREFIX + "/dept/insert", param, Integer.class);
}

}


**启动类**

package com.wanshi.springcloud;

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

// Ribbon 和 Eureka 整合以后，客户端可以直接调用，不用关心IP地址和端口号
@SpringBootApplication
@EnableEurekaClient
public class DeptConsumerApplication {

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

}


## 八、源码下载


[Spring Cluod搭建Eureka注册中心实现服务者与消费者的服务调用]( )


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