【转】SpringBoot学习笔记(7) SpringBoot整合Dubbo(使用yml配置)

http://blog.csdn.net/a67474506/article/details/61640548

Dubbo是什么东西我这里就不详细介绍了,自己可以去谷歌

SpringBoot整合Dubbo的话我们首先要先对Dubbo的启动这块了解一哈

dubbo源码分析:http://blog.csdn.net/flashflight/article/details/44318447

Dubbo会注册各种解析器,因为我们这边不会在使用XML配置了,所以主要关注的地方就是这块

通过BeanDefinitionParser解析,然后注册到Ioc容器中,而这里我们通过SpringBoot的自动配置,读取yml配置生成SpringBean

基本上我们只有用到 registry,provider, protocol ,application这些

然后暴漏服务和引用服务 通过annotationBean这个东东

因为使用了yml或者properties的方式来配置dubbo,所以我们还需要dubbo的AnnotionBean类,来扫描指定包下面的类.

这里集成dubbo的时候和前面集成其他东西的是差不多的,不过在使用了AnnotionBean类的时候,因为AnnotionBean类实现了BeanFactoryPostProcessor接口.

这里还有一篇资料:

http://blog.csdn.net/u011686226/article/details/53841227

刚开始不知道的时候日志里面提示是这样的

@Bean method DubboAutoConfiguration.annotationBean is non-static and returns an object assignable to Spring's BeanFactoryPostProcessor interface.
This will result in a failure to process annotations such as @Autowired, @Resource and @PostConstruct within the method's declaring @Configuration class.
 Add the 'static' modifier to this method to avoid these container lifecycle issues; see @Bean javadoc for complete details.

解决了这个问题之后,下面的就可以直接按照原先的步骤来搞

dubbo-spring-boot-starter

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.ibigsea</groupId>
    <artifactId>dubbo-spring-boot-starter</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <boot.version>1.3.5.RELEASE</boot.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot</artifactId>
            <version>${boot.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-autoconfigure</artifactId>
            <version>${boot.version}</version>
        </dependency>
        <!-- dubbo -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>dubbo</artifactId>
            <version>2.5.3</version>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.github.sgroschupf</groupId>
            <artifactId>zkclient</artifactId>
            <version>0.1</version>
            <exclusions>
                <exclusion>
                    <artifactId>slf4j-api</artifactId>
                    <groupId>org.slf4j</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>log4j</artifactId>
                    <groupId>log4j</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>slf4j-log4j12</artifactId>
                    <groupId>org.slf4j</groupId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>
</project>

DubboProperties.Java

package com.ibigsea.dubbo.autoconfigure;

import org.springframework.boot.context.properties.ConfigurationProperties;

import com.alibaba.dubbo.config.ApplicationConfig;
import com.alibaba.dubbo.config.ProtocolConfig;
import com.alibaba.dubbo.config.RegistryConfig;

@ConfigurationProperties(prefix = DubboProperties.DUBBO_PREFIX)
public class DubboProperties {

    public static final String DUBBO_PREFIX = "dubbo";

    private String scan;

    private ApplicationConfig application;

    private ProtocolConfig protocol;

    private RegistryConfig registry;


    public String getScan() {
        return scan;
    }

    public void setScan(String scan) {
        this.scan = scan;
    }

    public ApplicationConfig getApplication() {
        return application;
    }

    public void setApplication(ApplicationConfig application) {
        this.application = application;
    }

    public ProtocolConfig getProtocol() {
        return protocol;
    }

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

    public RegistryConfig getRegistry() {
        return registry;
    }

    public void setRegistry(RegistryConfig registry) {
        this.registry = registry;
    }

}

DubboAutoConfiguration.java

package com.ibigsea.dubbo.autoconfigure;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

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


@Configuration
@EnableConfigurationProperties(DubboProperties.class)//开启属性注入,通过@autowired注入
@ConditionalOnClass({AnnotationBean.class,ApplicationConfig.class,ProtocolConfig.class,RegistryConfig.class})
public class DubboAutoConfiguration {

    @Autowired
    private DubboProperties prop;

    @Bean
    @ConditionalOnMissingBean(AnnotationBean.class)//容器中如果没有这个类,那么自动配置这个类
    public static AnnotationBean annotationBean(@Value("${dubbo.packageName}")String packageName) {
        AnnotationBean annotationBean = new AnnotationBean();
        annotationBean.setPackage(packageName);
        return annotationBean;
    }

    @Bean
    @ConditionalOnMissingBean(ApplicationConfig.class)//容器中如果没有这个类,那么自动配置这个类
    public ApplicationConfig applicationConfig() {
        ApplicationConfig applicationConfig = new ApplicationConfig();
        applicationConfig.setName(prop.getApplication().getName());
        return applicationConfig;
    }

    @Bean
    @ConditionalOnMissingBean(ProtocolConfig.class)//容器中如果没有这个类,那么自动配置这个类
    public ProtocolConfig protocolConfig() {
        ProtocolConfig protocolConfig = new ProtocolConfig();
        protocolConfig.setName(prop.getProtocol().getName());
        protocolConfig.setPort(prop.getProtocol().getPort());
        return protocolConfig;
    }

    @Bean
    @ConditionalOnMissingBean(RegistryConfig.class)//容器中如果没有这个类,那么自动配置这个类
    public RegistryConfig registryConfig() {
        RegistryConfig registryConfig = new RegistryConfig();
        registryConfig.setAddress(prop.getRegistry().getAddress());
        return registryConfig;
    }

}

在resource目录下面的META-INF添加spring.factories文件

# Auto Configure
org.springframework.boot.autoconfigure.EnableAutoConfiguration=
com.ibigsea.dubbo.autoconfigure.DubboAutoConfiguration

目录结构

服务提供者dubbo-provider

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.ibigsea</groupId>
    <artifactId>dubbo-provider</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <boot.version>1.3.7.RELEASE</boot.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.ibigsea</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>${boot.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <version>${boot.version}</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

</project>

定义一个接口BaseService.java

为了贪图方便,我就不在重新弄一个jar包,然后服务提供者和服务消费都引用这个jar了

package com.ibigsea.service;

public interface BaseService {

    public String build(String str);

}

HelloService.java

package com.ibigsea.dubbo_provider.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.ibigsea.service.BaseService;

@Service(group="helloService", version="1.0")
public class HelloService implements BaseService {

    @Override
    public String build(String str) {
        return "hello "+str+" !";
    }

}

启动类APP

package com.ibigsea;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RestController;

/**
 * 是Spring Boot项目的核心注解,主要是开启自动配置
 */
@SpringBootApplication // same as @Configuration @EnableAutoConfiguration @ComponentScan
@RestController
public class App {

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

}

application.yml配置

dubbo :
  protocol :
    prot : -1
    name  : dubbo
  application :
    name : hello-world-app
  registry :
    address : zookeeper://127.0.0.1:2181
  packageName : com.ibigsea.dubbo_provider.impl

server :
  port : 8083

目录结构

服务消费者dubbo-consume

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.ibigsea</groupId>
    <artifactId>dubbo-consume</artifactId>
    <version>0.0.1-SNAPSHOT</version>



    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <boot.version>1.3.5.RELEASE</boot.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>${boot.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <version>${boot.version}</version>
            <scope>test</scope>
        </dependency>
        <!-- dubbo -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>dubbo</artifactId>
            <version>2.5.3</version>
            <scope>provided</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.ibigsea</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>


</project>

同样的一个接口BaseService

package com.ibigsea.service;

public interface BaseService {

    public String build(String str);

}

RefService.java

package com.ibigsea.dubbo_consume.reference;

import org.springframework.stereotype.Service;

import com.alibaba.dubbo.config.annotation.Reference;
import com.ibigsea.service.BaseService;

@Service("refService")
public class RefService {

    @Reference(group="helloService", version="1.0")
    private BaseService baseService;

    public String sayHello(String name){
        return baseService.build(name);
    }

}

启动类APP

package com.ibigsea;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.ibigsea.dubbo_consume.reference.RefService;

/**
 * 是Spring Boot项目的核心注解,主要是开启自动配置
 */
@SpringBootApplication // same as @Configuration @EnableAutoConfiguration @ComponentScan
@RestController
public class App {

    @Autowired
    private RefService refService;

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

    @RequestMapping("/say")
    public String sayHello(String name) {
        return refService.sayHello(name);
    }

}

Application.yml

dubbo :
  protocol:
    prot : -1
    name  : dubbo
  application:
    name : hello-world-app
  registry:
    address : zookeeper://127.0.0.1:2181
  packageName : com.ibigsea.dubbo_consume.reference

server :
  port : 8085

项目结构

分别启动dubbo-provider 和 dubbo-consume

我们可以再zookeeper的client里面看到相关信息

这个是服务提供者的信息

这个是服务消费者的信息

这个是访问结果