SpringBoo 2.0 整合Dubbo實踐

端午節趁着假期熟悉一下spring boot 2.0 整合 Dubbo 實現如下：

1.工程的結構如下圖：

工程說明如下：

1.dubbo 工程爲父工程

2.service-api 爲接口定義工程。

3.service-api-imp 爲接口實現工程

4.work-service 爲接口調用工程

Dbubbo工程實現如下：

pom.xml 的實現如下：

<?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>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <groupId>com.hou</groupId>
    <artifactId>dubbo</artifactId>
    <version>1.0.0</version>
    <name>dubbo</name>
    <description>Demo project for Spring Boot</description>

    <modules>
        <module>service-api</module>
        <module>service-api-imp</module>
        <module>work-service</module>
    </modules>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <curator-framework.version>4.0.1</curator-framework.version>
        <zookeeper.version>3.4.13</zookeeper.version>
        <dubbo.starter.version>0.2.1.RELEASE</dubbo.starter.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.boot</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>${dubbo.starter.version}</version>
        </dependency>

        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>${curator-framework.version}</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/com.alibaba/dubbo -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>dubbo</artifactId>
            <version>2.6.6</version>
        </dependency>
        <dependency>
            <groupId>io.netty</groupId>
            <artifactId>netty-all</artifactId>
            <version>4.1.44.Final</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.jboss.netty/netty -->
        <dependency>
            <groupId>org.jboss.netty</groupId>
            <artifactId>netty</artifactId>
            <version>3.2.5.Final</version>
        </dependency>
        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>${zookeeper.version}</version>
        </dependency>
    </dependencies>

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

</project>

2. service-api 工程如下：

1.接口類的實現如下：

package com.hou.service.api.User;

public interface IUserService {

    public String getUserInfo();
}

2.pom.xml 如下：

<?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>4.0.0</modelVersion>
    <parent>
        <groupId>com.hou</groupId>
        <artifactId>dubbo</artifactId>
        <version>1.0.0</version>
    </parent>

    <groupId>com.hou</groupId>
    <artifactId>service-api</artifactId>
    <version>1.0.0</version>
    <name>service-api</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

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

</project>

service-api-imp 工程如下：

1..接口類的實現如下：

package com.hou.api.imp.user;

import com.hou.service.api.User.IUserService;
import com.alibaba.dubbo.config.annotation.Service;


@Service
public class UserService implements IUserService {


    @Override
    public String getUserInfo() {
        return "我是：houxian1103";
    }
}

2.pom.xml的實現如下：

<?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>4.0.0</modelVersion>

    <parent>
        <groupId>com.hou</groupId>
        <artifactId>dubbo</artifactId>
        <version>1.0.0</version>
    </parent>

    <groupId>com.hou</groupId>
    <artifactId>service-api-imp</artifactId>
    <version>1.0.0</version>
    <name>service-api-imp</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>com.hou</groupId>
            <artifactId>service-api</artifactId>
            <version>1.0.0</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

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

</project>

3.application.yml的實現如下：

server:
  port: 8080
dubbo:
  application:
    name: usermgr
  protocol:
    name: dubbo
    port: 20880
  registry:
    address: zookeeper://106.13.99.25:2181
  scan:
    base-packages: com.hou.api.impl
spring:
  main:
    allow-bean-definition-overriding: true

work-service工程如下：

1.接口調用實現：

package com.hou.work.controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.hou.service.api.User.IUserService;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class workController {

    @Reference
    private IUserService userService;

    @RequestMapping("/getUserInfo")
    public String getUserInfo() {
        return userService.getUserInfo();
    }

}

2.pom.xml 的實現如下：

<?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>4.0.0</modelVersion>

    <parent>
        <groupId>com.hou</groupId>
        <artifactId>dubbo</artifactId>
        <version>1.0.0</version>
    </parent>

    <groupId>com.hou</groupId>
    <artifactId>work-service</artifactId>
    <version>1.0.0</version>
    <name>work-service</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.hou</groupId>
            <artifactId>service-api</artifactId>
            <version>1.0.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

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

</project>

3.application.yml的實現如下：

server:
  port: 8081
###dubbo 註冊服務名稱
dubbo:
  application:
    name: work
 ###dubbo服務地址
  registry:
    address: zookeeper://106.13.99.25:2181
  consumer:
    timeout: 5000
spring:
  main:
    allow-bean-definition-overriding: true

上述就是使用zookeeper 實現負載均衡dubbo +spring boot 的整合過程。

其中要幾個要注意的點：

1. service-api-imp 工程中的實現類中，@Service 爲 dubbo中的註解。

import com.alibaba.dubbo.config.annotation.Service;
@Service
public class UserService implements IUserService {
2.yml 配置中，要求引用：

spring:
main:
allow-bean-definition-overriding: true

SpringBoo 2.0 整合Dubbo實踐

1.工程的結構如下圖：

Dbubbo工程實現如下：

2. service-api 工程如下：

service-api-imp 工程如下：

work-service工程如下：

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