一、zookeeper配置中心安装
1、下载安装包,zookeeper-3.4.6.tar.gz
2、解压安装包,修改配置文件
参考zookeeper-3.4.6/conf/zoo_sample.cfg文件,同步录下建立zoo.cfg,配置如下:
# The number of milliseconds of each tick
tickTime=
# The number of ticks that the initial
# synchronization phase can take
initLimit=
# The number of ticks that can pass between
# sending a request and getting an acknowledgement
syncLimit=
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just
# example sakes.
dataDir=E:\项目\zookeeper-3.4.\data
# the port at which the clients will connect
clientPort=
# the maximum number of client connections.
# increase this if you need to handle more clients
#maxClientCnxns=
#
# 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=
# Purge task interval in hours
# Set to "" to disable auto purge feature
#autopurge.purgeInterval=
3、启动zk
点击E:\项目\zookeeper-3.4.6\bin\zkServer.cmd
socket connection from /192.168.1.100:
二、dubboadmin监控中心的安装配置(非必须)
1、下载tomcat安装运行
2、下载dubbo-admin-2.5.8.war到tomcat7 \ webapps目录下
3、修改dubbo.properties
重启tomcat、在编译后的文件中找到\WEB-INF文件夹下的dubbo.properties文件,然后进行配置,默认属性配置如下:
dubbo.registry.address=zookeeper://192.168.1.100:2181
dubbo.admin.root.password=root
dubbo.admin.guest.password=guest
4、验证dubbo-admin
重启zk、tomcat、访问:http://192.168.1.100:8080/dubbo-admin-2.5.8 ,进入监控中心的管理界面(默认管理员账户密码为:root,root)
三、dubbo代码示例
1、公共接口service
package com.dubbo.demo.api; public interface DemoRpcService { /**
* 测试方法
* @return
*/
String getUserName(String uid);
}
pom.xml
<?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>dubbo.demo</groupId>
<artifactId>dubbo-api</artifactId>
<version>1.0-SNAPSHOT</version>
</project>
2、生产者代码
package com.dubbo.demo;
import com.dubbo.demo.api.DemoRpcService;
public class DemoRpcServiceImpl implements DemoRpcService { public String getUserName(String uid) {
System.out.println("接收入参:"+uid);
return "小明";
}
}
启动代码:
public static void main(String[] args) throws IOException {
ClassPathXmlApplicationContext context
= new ClassPathXmlApplicationContext("classpath:dubbo-provider.xml");
context.start();
// 阻塞当前进程,否则程序会直接停止
System.in.read();
}
dubbo-provider.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:dubbo="http://code.alibabatech.com/schema/dubbo"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://code.alibabatech.com/schema/dubbo
http://code.alibabatech.com/schema/dubbo/dubbo.xsd"> <!--dubbo应用程序命名-->
<dubbo:application name="dubbo-demo-provider"/> <!--dubbo注册地址-->
<dubbo:registry address="zookeeper://192.168.1.100:2181"/> <!--dubbo协议地址-->
<dubbo:protocol name="dubbo" port="20880"/> <!--接口声明-->
<dubbo:service interface="com.dubbo.demo.api.DemoRpcService" ref="demoRpcService"/>
<bean id="demoRpcService" class="com.dubbo.demo.DemoRpcServiceImpl"/>
</beans>
pom.xml
<?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>dubbo.demo</groupId>
<artifactId>dubbo-provider</artifactId>
<version>1.0-SNAPSHOT</version> <dependencies>
<!-- dubbo -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.6.0</version>
</dependency>
<!-- zookeeper客户端 -->
<dependency>
<groupId>com.101tec</groupId>
<artifactId>zkclient</artifactId>
<version>0.10</version>
</dependency>
<!-- api接口 -->
<dependency>
<groupId>dubbo.demo</groupId>
<artifactId>dubbo-api</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
</dependencies> </project>
3、消费者代码
public static void main(String[] args) throws IOException {
ClassPathXmlApplicationContext context
= new ClassPathXmlApplicationContext("classpath:dubbo-consumer.xml");
context.start(); String useId = "123456";
DemoRpcService demoService = (DemoRpcService) context.getBean("demoRpcService");
System.out.println("收到结果"+demoService.getUserName(useId)); // 阻塞当前进程,否则程序会直接停止
System.in.read();
}
dubbo-consumer.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:dubbo="http://code.alibabatech.com/schema/dubbo"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://code.alibabatech.com/schema/dubbo
http://code.alibabatech.com/schema/dubbo/dubbo.xsd"> <!--dubbo应用程序命名-->
<dubbo:application name="dubbo-demo-provider"/> <!--dubbo注册地址-->
<dubbo:registry address="zookeeper://192.168.1.100:2181"/> <!--接口引用-->
<dubbo:reference interface="com.dubbo.demo.api.DemoRpcService" id="demoRpcService"/>
</beans>
pom.xml
<?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>dubbo.demo</groupId>
<artifactId>dubbo-consumer</artifactId>
<version>1.0-SNAPSHOT</version> <dependencies>
<!-- dubbo -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo</artifactId>
<version>2.6.0</version>
</dependency>
<!-- zookeeper客户端 -->
<dependency>
<groupId>com.101tec</groupId>
<artifactId>zkclient</artifactId>
<version>0.10</version>
</dependency>
<!-- api接口 -->
<dependency>
<groupId>dubbo.demo</groupId>
<artifactId>dubbo-api</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>utf-8</encoding>
</configuration>
</plugin>
</plugins>
</build> </project>
4、运行测试
先启动生产者、再启动消费者
Connected to the target VM, address: '127.0.0.1:52472', transport: 'socket'
log4j:WARN No appenders could be found for logger (org.springframework.core.env.StandardEnvironment).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
接收入参:123456
log4j:WARN No appenders could be found for logger (org.springframework.core.env.StandardEnvironment).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
收到结果小明
5、演示代码下载地址
GitHub:https://github.com/Star-Lordxing/dubbo-demo