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服务器之家 - 编程语言 - Java教程 - Spring Boot 集成Dubbo框架实例

Spring Boot 集成Dubbo框架实例

2020-10-05 12:36成立_ChengLi Java教程

本篇文章主要介绍了Spring Boot 集成Dubbo框架实例,小编觉得挺不错的,现在分享给大家,也给大家做个参考。一起跟随小编过来看看吧

使用Spring Boot 与Dubbo集成,这里我之前尝试了使用注解的方式,简单的使用注解注册服务其实是没有问题的,但是当你涉及到使用注解的时候在服务里面引用事务,注入其他对象的时候,会有一些问题。于是我就果断放弃了注解了,使用的是XML,这里可能介绍的是Dubbo,但是如果使用Dubbox的话,基本上是兼容的。接下来,将说说使用XML的方式与Spring Boot在一起开发。

1.创建工程在pom.xml中加入依赖

创建工程名为:

(1)springboot-dubbo-provide

(2)springboot-dubbo-api

(3)springboot-dubbo-consume

springboot-dubbo-api工程主要是放一些service接口,用于提供给消费者使用 。springboot-dubbo-provide工程用于提供服务。  springboot-dubbo-consume工程为消费者。在springboot-dubbo-provide工程中打开pom.xml加入以下依赖,完整代码如下:

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<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.chengli</groupId>
  <artifactId>springboot-dubbo-provide</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>
  <name>springboot-dubbo-provide</name>
  <url>http://maven.apache.org</url>
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.4.3.RELEASE</version>
  </parent>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <java.version>1.8</java.version>
    <com.alibaba.dubbo.version>2.5.3</com.alibaba.dubbo.version>
    <org.apache.zookeeper.version>3.4.6</org.apache.zookeeper.version>
    <com.github.sgroschupf.zkclient.version>0.1</com.github.sgroschupf.zkclient.version>
  </properties>
  <dependencies>
    <dependency>
      <groupId>com.chengli</groupId>
      <artifactId>springboot-dubbo-api</artifactId>
      <version>0.0.1-SNAPSHOT</version>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter</artifactId>
    </dependency>
    <!-- dubbo -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>dubbo</artifactId>
      <exclusions>
        <exclusion>
          <groupId>org.springframework</groupId>
          <artifactId>spring</artifactId>
        </exclusion>
      </exclusions>
      <version>${com.alibaba.dubbo.version}</version>
    </dependency>
    <dependency>
      <groupId>org.apache.zookeeper</groupId>
      <artifactId>zookeeper</artifactId>
      <version>${org.apache.zookeeper.version}</version>
    </dependency>
    <dependency>
      <groupId>com.github.sgroschupf</groupId>
      <artifactId>zkclient</artifactId>
      <version>${com.github.sgroschupf.zkclient.version}</version>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
    </plugins>
  </build>
</project>

打开springboot-dubbo-consume工程,在pom.xml中加入以下依赖,完整代码如下:

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<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.chengli</groupId>
  <artifactId>springboot-dubbo-consume</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>
  <name>springboot-dubbo-consume</name>
  <url>http://maven.apache.org</url>
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.4.3.RELEASE</version>
  </parent>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <java.version>1.8</java.version>
    <com.alibaba.dubbo.version>2.5.3</com.alibaba.dubbo.version>
    <org.apache.zookeeper.version>3.4.6</org.apache.zookeeper.version>
    <com.github.sgroschupf.zkclient.version>0.1</com.github.sgroschupf.zkclient.version>
  </properties>
  <dependencies>
    <dependency>
      <groupId>com.chengli</groupId>
      <artifactId>springboot-dubbo-api</artifactId>
      <version>0.0.1-SNAPSHOT</version>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <!-- dubbo -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>dubbo</artifactId>
      <exclusions>
        <exclusion>
          <groupId>org.springframework</groupId>
          <artifactId>spring</artifactId>
        </exclusion>
      </exclusions>
      <version>${com.alibaba.dubbo.version}</version>
    </dependency>
    <dependency>
      <groupId>org.apache.zookeeper</groupId>
      <artifactId>zookeeper</artifactId>
      <version>${org.apache.zookeeper.version}</version>
    </dependency>
    <dependency>
      <groupId>com.github.sgroschupf</groupId>
      <artifactId>zkclient</artifactId>
      <version>${com.github.sgroschupf.zkclient.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-configuration-processor</artifactId>
      <optional>true</optional>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
    </plugins>
  </build>
</project>

2.Dubbo配置

2.1springboot-dubbo-provide服务提供者

(1)在springboot-dubbo-provide项目中创建入口启动类MainConfig,完整代码如下:

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package com.chengli.springboot;
 
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
 
@SpringBootApplication
public class MainConfig {
  public static void main(String[] args) {
    SpringApplication.run(MainConfig.class, args);
    try {
      System.in.read();
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
}

(2)创建Dubbo配置类

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package com.chengli.springboot.dubbo;
 
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportResource;
import org.springframework.context.annotation.PropertySource;
 
@Configuration
@PropertySource("classpath:dubbo/dubbo.properties")
@ImportResource({ "classpath:dubbo/*.xml" })
public class DubboConfig {
 
}

(3)创建Dubbo配置文件

在src/main/resources下新建文件夹dubbo,并加入以下配置:

dubbo-provider.xml内容如下:

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<?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">
 
  <!-- 提供方应用信息,用于计算依赖关系 -->
  <dubbo:application name="${dubbo.application.name}" />
 
  <!-- 注册中心暴露服务地址 -->
  <!-- <dubbo:registry address="multicast://224.5.6.7:1234" /> -->
   
  <!-- <dubbo:registry protocol="zookeeper" address="10.170.219.98:2181,10.173.55.173:2181" /> -->
  <dubbo:registry protocol="${dubbo.registry.protocol}" address="${dubbo.registry.address}" />
 
  <!-- 暴露服务 -->
  <dubbo:protocol name="${dubbo.protocol.name}" port="${dubbo.protocol.port}" />
   
  <dubbo:service interface="com.chengli.springboot.example.service.ExampleService"
    ref="exampleServiceImpl" retries="0" timeout="6000" />
</beans>

注意:这里我发布的example服务是示例,具体的根据实际修改

(4)创建dubbo.properties

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#应用名称
dubbo.application.name=example-provider
#注册中心类型
dubbo.registry.protocol=zookeeper
#注册中心地址
dubbo.registry.address=127.0.0.1:2181
#暴露服务方式
dubbo.protocol.name=dubbo
#暴露服务端口
dubbo.protocol.port=20880

2.2springboot-dubbo-consume服务消费者

(1)创建入口启动类MainConfig

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package com.chengli.springboot;
 
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
 
@SpringBootApplication
public class MainConfig {
  public static void main(String[] args) {
    SpringApplication.run(MainConfig.class, args);
  }
}

(2)创建Dubbo配置类

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package com.chengli.springboot.dubbo;
 
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportResource;
import org.springframework.context.annotation.PropertySource;
 
@Configuration
@PropertySource("classpath:dubbo/dubbo.properties")
@ImportResource({ "classpath:dubbo/*.xml" })
public class DubboConfig {
 
}

(3)创建Dubbo配置文件

在src/main/resources下新建文件夹dubbo,并加入以下配置:

dubbo-consume.xml内容如下:

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<?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">
 
  <!-- 提供方应用信息,用于计算依赖关系 -->
  <dubbo:application name="${dubbo.application.name}" />
 
  <!-- 注册中心暴露服务地址 -->
  <dubbo:registry protocol="${dubbo.registry.protocol}" address="${dubbo.registry.address}" />
   
  <dubbo:reference id="axempleService" interface="com.chengli.springboot.example.service.ExampleService" />
</beans>

(4)创建dubbo.properties

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#应用名称
dubbo.application.name=example-consume
#注册中心类型
dubbo.registry.protocol=zookeeper
#注册中心地址
dubbo.registry.address=127.0.0.1:2181

到这里基本上就已经可以了,不过测试类的代码我就不贴上来了。只要在API中定义接口实现即可。使用Spring Boot 与Dubbo集成的时候,需要注意的是,不要使用Spring Boot提供的devtools热启动,因为devtools提供了两个ClassLoader,加载策略问题导致出现错误,无法启动。如果开发中需要热加载,那么使用Spring 提供的springloaded。

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。

原文链接:http://blog.csdn.net/cl_andywin/article/details/54318903

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