springboot+dubbo

　　使用springboot搭建dubbo服务，首先封装出springboot-dubbo的项目，引入在服务上加直接@Service直接使用，方便于拆封统一管理。

package hello.dubbo.configuration;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;

import com.alibaba.dubbo.config.ApplicationConfig;
import com.alibaba.dubbo.config.ProtocolConfig;
import com.alibaba.dubbo.config.ProviderConfig;
import com.alibaba.dubbo.config.RegistryConfig;
import com.alibaba.dubbo.config.spring.AnnotationBean;
import com.alibaba.dubbo.rpc.Exporter;

@Configuration
@ConditionalOnClass(Exporter.class)
@PropertySource(value = "classpath:/dubbo.properties")
public class DubboConfiguration {

    @Value("${dubbo.application.name}")
    private String applicationName;

    @Value("${spring.redis.host}")
    private String logger;

    @Value("${dubbo.registr.protocol}")
    private String protocol;

    @Value("${dubbo.registry.address}")
    private String registryAddress;

    @Value("${dubbo.protocol.name}")
    private String protocolName;

    @Value("${dubbo.protocol.port}")
    private int protocolPort;

    @Value("${dubbo.provider.timeout}")
    private int timeout;

    @Value("${dubbo.provider.retries}")
    private int retries;

    @Value("${dubbo.provider.delay}")
    private int delay;

    /**
     * 设置dubbo扫描包
     * @param packageName
     * @return
     */
    @Bean
    public static AnnotationBean annotationBean(@Value("${dubbo.annotation.package}") String packageName) {
        AnnotationBean annotationBean = new AnnotationBean();
        annotationBean.setPackage(packageName);
        return annotationBean;
    }

    /**
     * 注入dubbo上下文
     *
     * @return
     */
    @Bean
    public ApplicationConfig applicationConfig() {
        // 当前应用配置
        ApplicationConfig applicationConfig = new ApplicationConfig();
        applicationConfig.setName(this.applicationName);
        return applicationConfig;
    }

    /**
     * 注入dubbo注册中心配置,基于zookeeper
     *
     * @return
     */
    @Bean
    public RegistryConfig registryConfig() {
        // 连接注册中心配置
        RegistryConfig registry = new RegistryConfig();
        registry.setProtocol(protocol);
        registry.setAddress(registryAddress);
        return registry;
    }

    /**
     * 默认基于dubbo协议提供服务
     *
     * @return
     */
    @Bean
    public ProtocolConfig protocolConfig() {
        // 服务提供者协议配置
        ProtocolConfig protocolConfig = new ProtocolConfig();
        protocolConfig.setName(protocolName);
        protocolConfig.setPort(protocolPort);
        protocolConfig.setThreads(200);
        System.out.println("默认protocolConfig：" + protocolConfig.hashCode());
        return protocolConfig;
    }

    /**
     * dubbo服务提供
     *
     * @param applicationConfig
     * @param registryConfig
     * @param protocolConfig
     * @return
     */
    @Bean(name="defaultProvider")
    public ProviderConfig providerConfig(ApplicationConfig applicationConfig, RegistryConfig registryConfig, ProtocolConfig protocolConfig) {
        ProviderConfig providerConfig = new ProviderConfig();
        providerConfig.setTimeout(timeout);
        providerConfig.setRetries(retries);
        providerConfig.setDelay(delay);
        providerConfig.setApplication(applicationConfig);
        providerConfig.setRegistry(registryConfig);
        providerConfig.setProtocol(protocolConfig);
        return providerConfig;
    }

    public String getApplicationName() {
        return applicationName;
    }

    public void setApplicationName(String applicationName) {
        this.applicationName = applicationName;
    }

    public String getLogger() {
        return logger;
    }

    public void setLogger(String logger) {
        this.logger = logger;
    }

    public String getProtocol() {
        return protocol;
    }

    public void setProtocol(String protocol) {
        this.protocol = protocol;
    }

    public String getRegistryAddress() {
        return registryAddress;
    }

    public void setRegistryAddress(String registryAddress) {
        this.registryAddress = registryAddress;
    }

    public String getProtocolName() {
        return protocolName;
    }

    public void setProtocolName(String protocolName) {
        this.protocolName = protocolName;
    }

    public int getProtocolPort() {
        return protocolPort;
    }

    public void setProtocolPort(int protocolPort) {
        this.protocolPort = protocolPort;
    }

    public int getTimeout() {
        return timeout;
    }

    public void setTimeout(int timeout) {
        this.timeout = timeout;
    }

    public int getRetries() {
        return retries;
    }

    public void setRetries(int retries) {
        this.retries = retries;
    }

    public int getDelay() {
        return delay;
    }

    public void setDelay(int delay) {
        this.delay = delay;
    }

}

　　代码启动读取dubbo.properties资源文件，也可以把配置信息存在application.properties。

　　maven依赖配置文件pom.xml

<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.jon-spring</groupId>
    <artifactId>jon-spirng-boot-starter-dubbo</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.0.BUILD-SNAPSHOT</version>
    </parent>

    <dependencies>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- dubbo依赖 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>dubbo</artifactId>
            <version>2.5.3</version>
            <exclusions>
                <exclusion>
                    <artifactId>spring</artifactId>
                    <groupId>org.springframework</groupId>
                </exclusion>
            </exclusions>
        </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>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>

            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                    <encoding>UTF-8</encoding>
                    <compilerArguments>
                        <extdirs>src/main/webapp/WEB-INF/lib</extdirs>
                    </compilerArguments>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

　　基础dubbo服务项目配置成功！

　　dubbo服务项目依赖基础dubbo服务项目，即可使用dubbo服务

　　dubbo.properties文件

dubbo.application.name=application_
dubbo.application.logger=slf4j

dubbo.annotation.package=hello.dubbo

dubbo.protocol.name=dubbo
dubbo.protocol.port=20880
dubbo.protocol.accessLog=true

dubbo.provider.timeout=3000

dubbo.provider.retries=1
dubbo.provider.delay=-1

dubbo.registr.protocol=zookeeper

dubbo.registry.address=127.0.0.1:2181
dubbo.registry.register=true
dubbo.registry.subscribe=true

　　服务提供类

package hello.dubbo;

import com.alibaba.dubbo.config.annotation.Service;
import com.jon.show.service.IDubboDemoService;

@Service(version="1.0.0")
public class DubboDemoServiceImpl implements IDubboDemoService{

    @Override
    public String sayHello(String name) {
        return "hello " + name;
    }

    @Override
    public String sayYourAge(int age) {
        return null;
    }

}

　　　　application启动类

package hello;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.orm.jpa.vendor.HibernateJpaSessionFactoryBean;

@SpringBootApplication
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

    /**
     * 注入sessionfatory
     * @return
     */
    @Bean
    public HibernateJpaSessionFactoryBean sessionFactory() {
        return new HibernateJpaSessionFactoryBean();
    }
}

　　dubbo服务配置成功！即可使用。