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spring-boot整合dubbo启动demo
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参考资料：
https://docs.spring.io/spring-boot/docs/2.1.7.RELEASE/reference/html/
https://github.com/apache/dubbo-spring-boot-project
https://github.com/spring-cloud/spring-cloud-zookeeper/issues/36
1、spring boot配置
https://docs.spring.io/spring-boot/docs/2.1.7.RELEASE/reference/html/getting-started-installing-spring-boot.html#getting-started-maven-installation
maven配置
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.</modelVersion> <groupId>com.example</groupId>
<artifactId>myproject</artifactId>
<version>0.0.-SNAPSHOT</version> <!-- Inherit defaults from Spring Boot -->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1..RELEASE</version>
</parent> <!-- Add typical dependencies for a web application -->
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies> <!-- Package as an executable jar -->
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build></project>
java代码：
https://docs.spring.io/spring-boot/docs/2.1.7.RELEASE/reference/html/getting-started-first-application.html#getting-started-first-application-run
import org.springframework.boot.*;
import org.springframework.boot.autoconfigure.*;
import org.springframework.web.bind.annotation.*;@RestController
@EnableAutoConfiguration
public class Example {@RequestMapping("/")
String home() {
return "Hello World!";
}public static void main(String[] args) {
SpringApplication.run(Example.class, args);
}}
到这里spring-boot的web程序就搭建好了；
2、整合dubbo
2.1、准备zk（zookeeper）环境
官网下载zk：https://zookeeper.apache.org/releases.html
下载后解压到本地目录；
编辑并配置zoo.cfg文件(zk目录下/config/zoo.cfg)
tickTime=2000
initLimit=10
syncLimit=5
dataDir=E:\zk\zookeeper-3.4.9\datas
clientPort=2181
执行 bin/zkServer.cmd 启动zk服务
ps：这里就准备好zk环境了，如果想直观的看到zk的节点及目录信息可以使用工具 https://github.com/DeemOpen/zkui 查看，java实现，mvn package 后通过java -jar执行即可访问；
2.2、dubbo配置
这里使用apache项目下的dubbo项目启动器（alibaba的启动器已经不维护了，不推荐使用）
项目此时maven依赖：
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency> <!-- 解决 java.lang.NoClassDefFoundError: org/apache/curator/framework/recipes/cache/TreeCacheListener 问题 -->
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-recipes</artifactId>
<version>2.8.0</version>
</dependency> <dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-spring-boot-starter</artifactId>
<version>2.7.3</version>
</dependency>
</dependencies>
新增服务及服务实现
package cn.jsu.wyk.service.impl;import cn.jsu.wyk.service.PayService;
import com.alibaba.dubbo.config.annotation.Service;@Service(version = "1.0.0")
public class PayServiceImpl implements PayService { public String pay(){
return "pay success";
}
}
增加应用全局参数 application.properties
server.port=8081## Dubbo 服务提供者配置
spring.application.name=dubbo-spring-boot-starter
dubbo.registry.address=zookeeper://localhost:2181
dubbo.protocol.name=dubbo
dubbo.protocol.port=20880
dubbo.scan.base-packages=cn.jsu.wyk.service
至此配置完毕，启动测试，在zkui中能看到注册服务即大功告成
