17、SpringBoot------整合dubbo

SpringBoot整合Dubbo+Zookeaper

1.安装运行zookeeper

（1）下载zookeeper

官网：http://zookeeper.apache.org/

（2）解压缩

（3）修改配置文件

1. 拷贝zoo_sample.cfg重命名为zoo.cfg

2. 修改配置文档

   # The number of milliseconds of each tick
   tickTime=2000
   # The number of ticks that the initial
   # synchronization phase can take
   initLimit=10
   # The number of ticks that can pass between
   # sending a request and getting an acknowledgement
   syncLimit=5
   # the directory where the snapshot is stored.
   # do not use /tmp for storage, /tmp here is just
   # example sakes.
   dataDir=../data
   # the port at which the clients will connect
   clientPort=2181
   # the maximum number of client connections.
   # increase this if you need to handle more clients
   #maxClientCnxns=60
   #
   # Be sure to read the maintenance section of the
   # administrator guide before turning on autopurge.
   #
   # http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
   #
   # The number of snapshots to retain in dataDir
   #autopurge.snapRetainCount=3
   # Purge task interval in hours
   # Set to "0" to disable auto purge feature
   #autopurge.purgeInterval=1
   
   

3. 创建data文件夹

（4）cmd启动zkServer.sh

2.安装dubbo web管理客户端

（1）下载Duboo OPS

下载地址：https://github.com/apache/incubator-dubbo-ops/tree/master

（2）修改配置

#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

server.port=7001
spring.velocity.cache=false
spring.velocity.charset=UTF-8
spring.velocity.layout-url=/templates/default.vm
spring.messages.fallback-to-system-locale=false
spring.messages.basename=i18n/message
spring.root.password=root
spring.guest.password=guest

dubbo.registry.address=zookeeper://127.0.0.1:2181

（3）maven打包dubbo-admin

（4）启动生成jar

（5）访问http://localhost:7001/

3.安装dubbo监控服务中心

（1）maven打包dubbo-monitor-simple

（2）解压dubbo-monitor-simple-2.0.0-assembly.tar.gz

（3）修改配置文件

# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

dubbo.container=log4j,spring,registry,jetty-monitor
dubbo.application.name=simple-monitor
dubbo.application.owner=dubbo
#dubbo.registry.address=multicast://224.5.6.7:1234
dubbo.registry.address=zookeeper://127.0.0.1:2181
#dubbo.registry.address=redis://127.0.0.1:6379
#dubbo.registry.address=dubbo://127.0.0.1:9090
dubbo.protocol.port=7070
dubbo.jetty.port=8080
dubbo.jetty.directory=${user.home}/monitor
dubbo.charts.directory=${user.home}/monitor/charts
dubbo.statistics.directory=${user.home}/monitor/statistics
dubbo.log4j.file=logs/dubbo-monitor-simple.log
dubbo.log4j.level=WARN

（4）启动start.bat

（5）访问http://localhost:8080/

4.整合springboot

（1）新建Maven项目：d_api ：一个公用service的api

1. 新建一个接口：HelloService

   package com.xm.dubbo.service;
   
   public interface HelloService {
   
   	String sayHello();
   
   }
   
   

（2）新建Springboot项目：Hello_Producer

参考链接：https://github.com/apache/incubator-dubbo-spring-boot-project

1. 添加依赖

   <?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.xm.dubbo</groupId>
   	<artifactId>hello_producer</artifactId>
   	<version>0.0.1-SNAPSHOT</version>
   	<packaging>jar</packaging>
   
   	<name>hello_producer</name>
   	<description>This is a Web about springcloud</description>
   
   	<parent>
   		<groupId>org.springframework.boot</groupId>
   		<artifactId>spring-boot-starter-parent</artifactId>
   		<version>2.0.6.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>com.alibaba.boot</groupId>
   		    <artifactId>dubbo-spring-boot-starter</artifactId>
   		    <version>0.2.0</version>
   		</dependency>
   		<dependency>
   			<groupId>org.springframework.boot</groupId>
   			<artifactId>spring-boot-starter</artifactId>
   		</dependency>
   
   		<dependency>
   			<groupId>org.springframework.boot</groupId>
   			<artifactId>spring-boot-starter-test</artifactId>
   			<scope>test</scope>
   		</dependency>
   		<dependency>
   			<groupId>com.xm.dubbo</groupId>
   			<artifactId>d_api</artifactId>
   			<version>0.0.1-SNAPSHOT</version>
   		</dependency>
   	</dependencies>
   
   	<build>
   		<plugins>
   			<plugin>
   				<groupId>org.springframework.boot</groupId>
   				<artifactId>spring-boot-maven-plugin</artifactId>
   			</plugin>
   		</plugins>
   	</build>
   
   </project>
   
   

2. 修改配置文件

   dubbo.application.name=hello_producer
   dubbo.registry.protocol=zookeeper
   dubbo.registry.address=127.0.0.1:2181
   dubbo.scan.base-packages=com.xm.dubbo.service
   dubbo.protocol.name=dubbo
   dubbo.protocol.port=20080
   dubbo.monitor.protocol=registry
   

3. 新建HelloServiceImpl

   package com.xm.dubbo.service.impl;
   
   import org.springframework.stereotype.Component;
   
   import com.alibaba.dubbo.config.annotation.Service;
   import com.xm.dubbo.service.HelloService;
   
   @Service
   @Component
   public class HelloServiceImpl implements HelloService {
   
   	@Override
   	public String sayHello() {
   		System.out.println("生产者已被调用！");
   		return "Hello dubbo!";
   	}
   
   }
   
   

4. 项目入口添加@EnableDubbo注解

   package com.xm.dubbo;
   
   import org.springframework.boot.SpringApplication;
   import org.springframework.boot.autoconfigure.SpringBootApplication;
   
   import com.alibaba.dubbo.config.spring.context.annotation.EnableDubbo;
   
   @EnableDubbo
   @SpringBootApplication
   public class HelloProducerApplication {
   
   	public static void main(String[] args) {
   		SpringApplication.run(HelloProducerApplication.class, args);
   	}
   }
   
   

（3）新建Springboot项目：Hello_Consumer

1. 添加依赖

   <?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.xm.dubbo</groupId>
   	<artifactId>hello_consumer</artifactId>
   	<version>0.0.1-SNAPSHOT</version>
   	<packaging>jar</packaging>
   
   	<name>hello_consumer</name>
   	<description>This is a Web about springcloud</description>
   
   	<parent>
   		<groupId>org.springframework.boot</groupId>
   		<artifactId>spring-boot-starter-parent</artifactId>
   		<version>2.0.6.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>com.alibaba.boot</groupId>
   		    <artifactId>dubbo-spring-boot-starter</artifactId>
   		    <version>0.2.0</version>
   		</dependency>
   		<dependency>
   			<groupId>org.springframework.boot</groupId>
   			<artifactId>spring-boot-starter-web</artifactId>
   		</dependency>
   
   		<dependency>
   			<groupId>org.springframework.boot</groupId>
   			<artifactId>spring-boot-starter-test</artifactId>
   			<scope>test</scope>
   		</dependency>
   		<dependency>
   			<groupId>com.xm.dubbo</groupId>
   			<artifactId>d_api</artifactId>
   			<version>0.0.1-SNAPSHOT</version>
   		</dependency>
   	</dependencies>
   
   	<build>
   		<plugins>
   			<plugin>
   				<groupId>org.springframework.boot</groupId>
   				<artifactId>spring-boot-maven-plugin</artifactId>
   			</plugin>
   		</plugins>
   	</build>
   
   </project>
   
   

2. 修改配置文件

   server.port=8081
   
   dubbo.application.name=hello_consumer
   dubbo.registry.protocol=zookeeper
   dubbo.registry.address=127.0.0.1:2181
   dubbo.monitor.protocol=registry
   

3. 新建HelloController

   package com.xm.dubbo.controller;
   
   import org.springframework.web.bind.annotation.GetMapping;
   import org.springframework.web.bind.annotation.RestController;
   
   import com.alibaba.dubbo.config.annotation.Reference;
   import com.xm.dubbo.service.HelloService;
   
   @RestController
   public class HelloController {
   
   	@Reference
   	private HelloService helloService;
   
   	@GetMapping("/hello")
   	public String sayHello() {
   		return helloService.sayHello();
   	}
   
   }
   
   

4. 项目入口添加@EnableDubbo注解

   package com.xm.dubbo;
   
   import org.springframework.boot.SpringApplication;
   import org.springframework.boot.autoconfigure.SpringBootApplication;
   
   import com.alibaba.dubbo.config.spring.context.annotation.EnableDubbo;
   
   @EnableDubbo
   @SpringBootApplication
   public class HelloConsumerApplication {
   
   	public static void main(String[] args) {
   		SpringApplication.run(HelloConsumerApplication.class, args);
   	}
   }