微服务分布式云架构-springCloud集成zookeeper

zookeeper是被适用于分手不是应用中的。springboot是一个单体的微服务，多个单体的微服务构成分布式服务。而springcloud是一个服务治理的集成者。
1，创建一个maven工程；
了解springcloud架构可以加求求：三五三六二四七二五九
2:，引入依赖

<?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>

    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.2.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>
        <spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
    </properties>

    <dependencies>
        <!-- 提供zookeeper整合的包 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zookeeper-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
        </dependency>
    
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- 热部署工具 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Camden.SR2</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

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


</project>

说明：注意引入的依赖之间是否冲突。

2，配置文件 application.properties

#系统中用到的参数配置  编码格式
com.interview.question=springboot有哪些配置的注解
logging.level.root=INFO
logging.file=D:/logs/hello.log
server.port=8081
spring.application.name=info     ——————————————必须有该属性配置，否则启动时报空指针异常

配置文件

#spring.cloud.zookeeper.connectString=127.0.0.1:2181
3spring.cloud.zookeeper.discovery.instanceHost=127.0.0.1
#spring.cloud.zookeeper.discovery.instancePort=${server.port}

## 启用zookeeper作为配置中心
spring.cloud.zookeeper.config.enabled = true

## 配置根路径
spring.cloud.zookeeper.config.root = config

## 配置默认上下文
spring.cloud.zookeeper.config.defaultContext = zook

## 配置profile分隔符
spring.cloud.zookeeper.config.profileSeparator = -

3:，启动类

package zookeper;

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

/**
*
* 项目名称：zookeper
* 类名称：App
* 类描述：
* 创建人：john
* 创建时间：2018年7月31日 下午3:36:01
* 修改人：john
* 修改时间：2018年7月31日 下午3:36:01
* 修改备注：
* @version
*
*/
@SpringBootApplication
@EnableDiscoveryClient
public class ZookApp {
   public static void main(String[] args){
       SpringApplication.run(ZookApp.class, args);
       System.out.println("hello springcloud");
   }
}

4，controller

package zookeper.controller;

import java.util.List;
import org.springframework.core.env.Environment;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 *
 * 项目名称：zookeper 类名称：ZookController 类描述： 创建人：john 创建时间：2018年7月31日 下午3:51:56
 * 修改人：john 修改时间：2018年7月31日 下午3:51:56 修改备注：
 * 
 * @version
 *
 */
@RestController
@RequestMapping("/zook")
public class ZookController {
    @Autowired
    private DiscoveryClient client;
    @Autowired
    private Environment environment;

    public String getZook() {
        return "";
    }

    @RequestMapping("/getServices")
    public String discoveryClent() {
        List<String> serviceList = client.getServices();
        System.out.println("注册服务的数量>>>>>>>>>>>>>>>>>" + serviceList.size());
        for (String service : serviceList) {
            System.out.println("注册的服务>>>>>>" + service);
        }
        return "info";
    }

    @GetMapping("/env")
    public String test() {
        String[] profiles = environment.getActiveProfiles();
        System.out.println("profiles>>>>>>>" + profiles.length);
        for (String item : profiles) {
            System.out.println("item>>>>>>>>>>>>>>>" + item);
        }

        String name = environment.getProperty("url");
        System.out.println(name);

        return "Hello," + name;
    }
}

5,验证

浏览器验证

elipse打印

6,添加操作zookeeper的客户端 CuratorFramework（直接注入即可）
package zookeper.controller;

import java.util.List;
import org.springframework.core.env.Environment;
import org.apache.curator.framework.CuratorFramework;
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.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
*

• 项目名称：zookeper 类名称：ZookController 类描述： 创建人：john 创建时间：2018年7月31日 下午3:51:56
• 修改人：john 修改时间：2018年7月31日 下午3:51:56 修改备注：

 * @version
 *
 */
@RestController
@RequestMapping("/zook")
public class ZookController {
    @Autowired
    private DiscoveryClient client;
    @Autowired
    private Environment environment;
    @Autowired
    private CuratorFramework curatorFramework;

    public String getZook() {
        return "";
    }

    @RequestMapping("/getServices")
    public String discoveryClent() {
        List<String> serviceList = client.getServices();
        List<ServiceInstance> list=client.getInstances("info");
         //获取实例化的服务
        StringBuffer sb = new StringBuffer();
        if (list != null && list.size() > 0 ) {
            sb.append(list.get(0).getUri()+",");
            System.out.println(">>>>>>>>>>>>>>>>"+list.get(0).isSecure());
        }
        System.out.println("sb>>>>>"+sb);
        System.out.println("注册服务的数量>>>>>>>>>>>>>>>>>" + serviceList.size());
        for (String service : serviceList) {
            System.out.println("注册的服务>>>>>>" + service);
        }
        return "info";
    }

    @GetMapping("/env")
    public String test() {
        String[] profiles = environment.getActiveProfiles();
        System.out.println("profiles>>>>>>>" + profiles.length);
        for (String item : profiles) {
            System.out.println("item>>>>>>>>>>>>>>>" + item);
        }
        
        String name = environment.getProperty("url");
        
        try {
            List <String> listChildren=curatorFramework.getChildren().forPath("/config/zook");
            for(String child:listChildren ){
                System.out.println("child>>>>>>>"+child);
            }
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
        System.out.println(name);

        return "Hello," + name;
    }
}