文章目錄
dubbox的介紹
-
Dubbox 是一個分佈式服務框架,其前身是阿里巴巴開源項目Dubbo ,被國內電商及互聯網項目中使用,後期阿里巴巴停止了該項目的維護,噹噹網便在Dubbo基礎上進行優化,並繼續維護,爲了與原有的Dubbo區分,故將其命名爲Dubbox。
-
Dubbox 致力於提供高性能和透明化的RPC遠程服務調用方案,以及SOA服務治理方案。簡單的說,dubbox就是個服務框架,如果沒有分佈式的需求,其實是不需要用的,只有在分佈式的時候,纔有dubbox這樣的分佈式服務框架的需求,並且本質上是個服務調用的東東,說白了就是個遠程服務調用的分佈式框架。
節點角色說明:
• Provider: 暴露服務的服務提供方。
• Consumer: 調用遠程服務的服務消費方。
• Registry: 服務註冊與發現的註冊中心。
• Monitor: 統計服務的調用次調和調用時間的監控中心。
• Container: 服務運行容器。
調用關係說明:
• 0. 服務容器負責啓動,加載,運行服務提供者。
• 1. 服務提供者在啓動時,向註冊中心註冊自己提供的服務。
• 2. 服務消費者在啓動時,向註冊中心訂閱自己所需的服務。
• 3. 註冊中心返回服務提供者地址列表給消費者,如果有變更,註冊中心將基於長連接推 送變更數據給消費者。
• 4. 服務消費者,從提供者地址列表中,基於軟負載均衡算法,選一臺提供者進行調用, 如果調用失敗,再選另一臺調用。
• 5. 服務消費者和提供者,在內存中累計調用次數和調用時間,定時每分鐘發送一次統計 數據到監控中心。
註冊中心Zookeeper
介紹
- 官方推薦使用 zookeeper 註冊中心。註冊中心負責服務地址的註冊與查找,相當於目錄服務,服務提供者和消費者只在啓動時與註冊中心交互,註冊中心不轉發請求,壓力較小。
- Zookeeper 是 Apacahe Hadoop 的子項目,是一個樹型的目錄服務,支持變更推送,適合作爲Dubbox 服務的註冊中心,工業強度較高,可用於生產環境。
在Linux系統中安裝
- 參考
https://blog.csdn.net/weixin_43912805/article/details/104143831
入門案例
服務方
創建Maven工程(WAR)dubboxdemo-service ,
- 在pom.xml中引入依賴
<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>cn.itcast.dubboxdemo</groupId>
<artifactId>dubboxdemo-service</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<spring.version>4.2.4.RELEASE</spring.version>
</properties>
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jms</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- dubbo相關 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.8.4</version>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.4.6</version>
</dependency>
<dependency>
<groupId>com.github.sgroschupf</groupId>
<artifactId>zkclient</artifactId>
<version>0.1</version>
</dependency>
<dependency>
<groupId>javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.11.0.GA</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<configuration>
<!-- 指定端口 -->
<port>8081</port>
<!-- 請求路徑 -->
<path>/</path>
</configuration>
</plugin>
</plugins>
</build>
</project>
- 創建applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
</beans>
- 在web.xml中配置監聽器監聽servletContext創建,加載applicationContext.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
<!-- 加載spring容器 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext*.xml</param-value>
</context-param>
<listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
</web-app>
- 創建業務層接口
package cn.lld.dubbodemo.service;
/**
* 業務接口
* @author Administrator
*
*/
public interface UserService {
public String getName();
}
- 創建業務層接口實現類
package cn.lld.dubbodemo.service.impl;
import com.alibaba.dubbo.config.annotation.Service;
import cn.lld.dubbodemo.service.UserService;
@Service
public class UserServiceImpl implements UserService {
public String getName() {
return "1703";
}
}
注意事項:在使用@service註解時,要使用com.alibaba.dubbo.config.annotation.Service裏的@service註解,這樣服務才能被發現
- 配置applicationContext.xml
<dubbo:application name="dubboxdemo-service"/>
<dubbo:registry address="zookeeper://192.168.25.132:2181"/>
<dubbo:annotation package="cn.itcast.dubboxdemo.service" />
消費方
創建Maven工程(WAR)dubboxdemo-web
- 在pom.xml中引入依賴
<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>cn.itcast.dubboxdemo</groupId>
<artifactId>dubboxdemo-service</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<spring.version>4.2.4.RELEASE</spring.version>
</properties>
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jms</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- dubbo相關 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.8.4</version>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.4.6</version>
</dependency>
<dependency>
<groupId>com.github.sgroschupf</groupId>
<artifactId>zkclient</artifactId>
<version>0.1</version>
</dependency>
<dependency>
<groupId>javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.11.0.GA</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<configuration>
<!-- 指定端口 -->
<port>8082</port>
<!-- 請求路徑 -->
<path>/</path>
</configuration>
</plugin>
</plugins>
</build>
</project>
- 創建springmvc.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<!--配置json-->
<mvc:annotation-driven >
<mvc:message-converters register-defaults="false">
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<constructor-arg value="UTF-8" />
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
</beans>
- 在web.xml中配置加載springmvc.xml(跟加載applicationContext.xml相同)
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
<!-- 解決post亂碼 -->
<filter>
<filter-name>CharacterEncodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet>
<servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 指定加載的配置文件 ,通過參數contextConfigLocation加載-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext-web.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
- 編寫controller
package cn.lld.dubboxdemo.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import cn.lld.dubbodemo.service.UserService;
@Controller
@RequestMapping("/user")
public class UserController {
@Reference
private UserService userService;
@RequestMapping("/showName")
@ResponseBody
public String showName(){
return userService.getName();
}
}
注意,在注入service時使用@Reference註解(從遠程注入:不瞭解)
管理端安裝
環境準備
- 在裝Zookeper的Linux系統中裝一個tomcat
鏈接:https://pan.baidu.com/s/1uq8WlQOltYgcHc7tWNrB0w
提取碼:pne5
複製這段內容後打開百度網盤手機App,操作更方便哦
- 將下面網盤的war包拷貝到tomcat中webapps目錄下,啓動tomcat
鏈接:https://pan.baidu.com/s/1NEP5ZX2XuvoaVoNgMqZ_Ug
提取碼:yrq4
複製這段內容後打開百度網盤手機App,操作更方便哦
- 在瀏覽器地址欄輸入:ip地址:tomcat端口號/dubbo-admin,進行登錄,登錄賬號和密碼均爲root