Dubbo快速入门
文章目录
- 一、Apache Dubbo概述
- 二、服务注册中心Zookeeper
- 三、Dubbo快速入门
-
- 1、安装Zookeeper
-
- 1.1：安装jdk
- 1.2：上传并且解压
- 1.3：创建data文件
- 1.4：修改文件名
- 1.5：修改文件属性
- 1.6:启动、停止zookeeper
- 2、服务方提供开发
-
- 1.1、创建maven工程(pom.xml文件导入)
- 1.2、配置web.xml文件
- 1.3、创建服务接口
- 1.4、创建服务实现类
- 1.5、在resource下创建applicationContext.xml文件
- 1.6、启动服务
- 3、服务消费方开发
-
- 1.1、创建maven工程(pom.xml文件导入)
- 1.2、配置web.xml文件
- 1.3、创建服务接口
- 1.4、编写Controller
- 1.5、在resource下创建applicationContext.xml文件
- 1.6、运行测试
一、Apache Dubbo概述
Apache Dubbo是一款高性能的Java RPC框架。其前身是阿里巴巴公司开源的一个高性能、轻量级的开源Java RPC框架，可以和Spring框架无缝集成。
二、服务注册中心Zookeeper
Zookeeper 是 Apache Hadoop 的子项目，是一个树型的目录服务，支持变更推送，适合作为 Dubbo 服务的注册中心，工业强度较高，可用于生产环境，并推荐使用
三、Dubbo快速入门
1、安装Zookeeper
下载地址：http://archive.apache.org/dist/zookeeper/
本教程使用的版本为3.6.4版本 云盘地址：点我下载 提取码：ob75
1.1：安装jdk
安装 jdk（略）
1.2：上传并且解压
把 zookeeper 的压缩包（zookeeper-3.4.6.tar.gz）上传到 linux 系统，
并且解压压缩包 tar -zxvf zookeeper-3.4.6.tar.gz
1.3：创建data文件
进入zookeeper-3.4.6目录
创建data目录 mkdir data
1.4：修改文件名
进入conf目录 ，把zoo_sample.cfg 改名为zoo.cfg
cd conf
mv zoo_sample.cfg zoo.cfg
1.5：修改文件属性
打开zoo.cfg文件, 修改data属性：dataDir=/root/zookeeper-3.4.6/data
vim zoo.cfg
1.6:启动、停止zookeeper
进入Zookeeper的bin目录，启动服务命令
./zkServer.sh start
停止服务命令
./zkServer.sh stop
查看服务状态：
./zkServer.sh status
此步需要启动zookeeper： ./zkServer.sh start
2、服务方提供开发
使用idea（因为IDEA好使啊！！！）
1.1、创建maven工程(pom.xml文件导入)
<properties>
<project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
<maven.compiler.source>1.8maven.compiler.source>
<maven.compiler.target>1.8maven.compiler.target>
<spring.version>5.0.5.RELEASEspring.version>
properties>
<dependencies>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-contextartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-beansartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webmvcartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-jdbcartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-aspectsartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-jmsartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-context-supportartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>dubboartifactId>
<version>2.6.0version>
dependency>
<dependency>
<groupId>org.apache.zookeepergroupId>
<artifactId>zookeeperartifactId>
<version>3.4.7version>
dependency>
<dependency>
<groupId>com.github.sgroschupfgroupId>
<artifactId>zkclientartifactId>
<version>0.1version>
dependency>
<dependency>
<groupId>javassistgroupId>
<artifactId>javassistartifactId>
<version>3.12.1.GAversion>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>fastjsonartifactId>
<version>1.2.47version>
dependency>
dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-compiler-pluginartifactId>
<version>2.3.2version>
<configuration>
<source>1.8source>
<target>1.8target>
configuration>
plugin>
<plugin>
<groupId>org.apache.tomcat.mavengroupId>
<artifactId>tomcat7-maven-pluginartifactId>
<configuration>
<port>8081port>
<path>/path>
configuration>
plugin>
plugins>
build>
1.2、配置web.xml文件
<web-app>
<display-name>Archetype Created Web Applicationdisplay-name>
<context-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:applicationContext*.xmlparam-value>
context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
listener>
web-app>
1.3、创建服务接口
package com.xiao.service;
public interface HelloService {
public String sayHello(String name);
}
1.4、创建服务实现类
package com.xiao.service.impl;
import com.alibaba.dubbo.config.annotation.Service;
import com.itheima.service.HelloService;
@Service
public class HelloServiceImpl implements HelloService {
public String sayHello(String name) {
return "hello " + name;
}
}
注意：服务实现类上使用的Service注解是Dubbo提供的，用于对外发布服务
1.5、在resource下创建applicationContext.xml文件
<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">
<dubbo:application name="dubbodemo_provider" />
<dubbo:registry address="zookeeper://192.168.1.1:2181"/>
<dubbo:protocol name="dubbo" port="20881">dubbo:protocol>
<dubbo:annotation package="com.xiao.service.impl" />
beans>
1.6、启动服务
因为我们集成了tomcat，并且设置了端口为8081，在右侧的maven工具栏中，双击 tomcat7:run
3、服务消费方开发
开发步骤
1.1、创建maven工程(pom.xml文件导入)
创建maven工程（打包方式为war）dubbodemo_consumer
<properties>
<project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
<maven.compiler.source>1.8maven.compiler.source>
<maven.compiler.target>1.8maven.compiler.target>
<spring.version>5.0.5.RELEASEspring.version>
properties>
<dependencies>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-contextartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-beansartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webmvcartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-jdbcartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-aspectsartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-jmsartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-context-supportartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>dubboartifactId>
<version>2.6.0version>
dependency>
<dependency>
<groupId>org.apache.zookeepergroupId>
<artifactId>zookeeperartifactId>
<version>3.4.7version>
dependency>
<dependency>
<groupId>com.github.sgroschupfgroupId>
<artifactId>zkclientartifactId>
<version>0.1version>
dependency>
<dependency>
<groupId>javassistgroupId>
<artifactId>javassistartifactId>
<version>3.12.1.GAversion>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>fastjsonartifactId>
<version>1.2.47version>
dependency>
dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-compiler-pluginartifactId>
<version>2.3.2version>
<configuration>
<source>1.8source>
<target>1.8target>
configuration>
plugin>
<plugin>
<groupId>org.apache.tomcat.mavengroupId>
<artifactId>tomcat7-maven-pluginartifactId>
<configuration>
<port>8082port>
<path>/path>
configuration>
plugin>
plugins>
build>
1.2、配置web.xml文件
<web-app>
<display-name>Archetype Created Web Applicationdisplay-name>
<servlet>
<servlet-name>springmvcservlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
<init-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:applicationContext.xmlparam-value>
init-param>
<load-on-startup>1load-on-startup>
servlet>
<servlet-mapping>
<servlet-name>springmvcservlet-name>
<url-pattern>*.dourl-pattern>
servlet-mapping>
web-app>
1.3、创建服务接口
package com.xiao.service;
public interface HelloService {
public String sayHello(String name);
}
1.4、编写Controller
ckage com.xiao.controller;
import com.alibaba.dubbo.config.annotation.Reference;
import com.xiao.service.HelloService;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
@RequestMapping("/demo")
public class HelloController {
@Reference
private HelloService helloService;
@RequestMapping("/hello")
@ResponseBody
public String getName(String name){
//远程调用
String result = helloService.sayHello(name);
System.out.println(result);
return result;
}
}
1.5、在resource下创建applicationContext.xml文件
<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">
<dubbo:application name="dubbodemo-consumer" />
<dubbo:registry address="zookeeper://192.168.1.1:2181"/>
<dubbo:annotation package="com.itheima.controller" />
beans>
1.6、运行测试
因为我们集成了tomcat，并且设置了端口为8082，在右侧的maven工具栏中，双击 tomcat7:run
编写完成！
在浏览器输入http://localhost:8082/demo/hello.do?name=Jack，查看浏览器输出结果
提示：该笔记是主要学到了某马的dubbo教程，然后想记录下笔记。