springcloud的配置

生产者:提供服务
消费者:消费服务
配置中心:保存了生产者和消费者之间的契约关系
所以,sprngcloud微服务的架构基础 :生产者(client),消费者(client),注册中心/配置中心(server)

废话不多说,先看demo结构:,共需要四个项目

 

一,创建eurekaserver
1.创建maven项目eureka-server,打包方式jar包,

 

2.pom.xml如下,eureka依赖中内置了ribbon包,并且配置了jre版本为1.8,所有导入pom后先update项目,更新jdk为1.8:

<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.jorian</groupId>
<artifactId>sc_eureka-server</artifactId>
<version>0.0.1-SNAPSHOT</version>

<!-- 导入父工程 -->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.RELEASE</version>
<relativePath />
</parent>


<!-- 设置jdk版本等信息 -->
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>

<!-- 导入eureka依赖 -->
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka-server</artifactId>
</dependency>

</dependencies>
<!-- dependency management -->
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Dalston.SR1</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>



</project>
3.创建启动类,用于启动springboot项目,启动类一定创建在父级包目录,否则会 扫描不到某些类

package com.jorian.sc_cloud;

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

@EnableEurekaServer//表示是一个eurekaserver
@SpringBootApplication
public class EurekaServerRunApp {

public static void main(String[] args) {
// TODO Auto-generated method stub
SpringApplication.run(EurekaServerRunApp.class, args);
}

}
4.创建springboot配置文件,名称一定为application.yml,格式为yml,因为在springboot的默认配置中扫描的就是application开头的配置文件,

注意 :yml格式的文件有特殊要求,必须树形结构,不能有tab,具体请百度

 其中的server-port为eureka服务的端口,一般默认8761,不需修改

security:
basic:
enabled: true
user:
name: user
password: password123
server:
port: 8761
eureka:
client:
register-with-eureka: false
fetch-registry: false
service-url:
defaultZone: http://user:password123@localhost:8761/eureka
logging:
level:
5.启动服务:

执行main方法

 

6.在浏览器访问:localhost:8761,查看服务是否启动

启动成功界面

 

二,创建生产者1,


1.新建maven项目provider1,打包方式jar包

修改pom.xml

<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.jorian</groupId>
<artifactId>sc_eureka-provider</artifactId>
<version>0.0.1-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<!--boot eureka-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<!-- boot web-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Dalston.SR1</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>


</project>
2.创建启动类,用于springboot项目启动:

package com.jorian.sc_cloud;

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

@EnableEurekaClient//表示是一个eurekaserver
@SpringBootApplication
public class ProviderRunApp {

public static void main(String[] args) {
// TODO Auto-generated method stub
SpringApplication.run(ProviderRunApp.class, args);
}

}
3.修改application.yml配置文件

port,application都可以自定义,defaultzone和eureka一致

server:
port: 7900
spring:
application:
name: provider-user
eureka:
client:
serviceUrl:
defaultZone: http://user:password123@localhost:8761/eureka
logging:
level:
root: INFO
4.创建controller,提供服务

package com.jorian.sc_cloud.controller;

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

@RestController
public class provider_Controller {
@RequestMapping("/hello")
public String sayhello(){
return "i`m provider1,hello consumer!";
}
}
5.启动项目,不要关闭之前启动的eureka服务。

执行main方法,参考上边

provier1启动后,查看之前的服务中心,刷新页面可以看到有一个provider-user(yml中配置的application-name)已经注册

 

三,创建消费者

1.创建maven项目consumer,打包方式jar包

 

2.修改pom文件

<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.jorian</groupId>
<artifactId>sc_eureka-consumer</artifactId>
<version>0.0.1-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Dalston.SR1</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
</project>
3.创建启动类,用于启动springboot项目:

package com.jorian.sc_cloud;

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

@SpringBootApplication
@EnableEurekaClient
public class ConsumerRunApp {

@Bean
@LoadBalanced //Ribbon负载均衡
public RestTemplate restTemplate(){
return new RestTemplate();
}
public static void main(String[] args) {
// TODO Auto-generated method stub
SpringApplication.run(ConsumerRunApp.class, args);
}

}
4.创建消费类,调用后台的服务

package com.jorian.sc_cloud.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;

@RestController
public class HelloController {
@Autowired
private RestTemplate resttemplate;

@RequestMapping("/hello")
public String hello(){
String url="http://provider-user/hello";

//返回值类型和我们的业务返回值一致
return resttemplate.getForObject(url, String.class);

}
}
5.修改yml文件,

修改port,sapplication-name,不要和其他重复了

server:
port: 7902
spring:
application:
name: consumer-hello
eureka:
client:
serviceUrl:
defaultZone: http://user:password123@localhost:8761/eureka
logging:
level:
root: INFO
6.启动springboot服务,在eureka服务上查看,可以看到消费者已经注册

 

四,测试
在地址栏直接访问消费者地址,localhost:7900(看自己的地址多少),成功!

 

五,开启多个provider实例,

可以采用修改yml文件 中的端口号重复启动实例,也可以另外新建多个provider,修改其中的yml文件,依次启动。

由于eureka配置类ribbon负载均衡策略,消费者的请求会在客户端被决定好发送到哪台服务提供者进行处理。

开启多个实例如下;



posted @ 2019-07-15 21:08  码农飞  阅读(362)  评论(0编辑  收藏  举报