搭建簡單的dubbo案例，並實現對數據庫的增刪改查

時間 2019-12-06

原文原文鏈接

1.建立父工程java

pom文件以下(這裏只添加幾個最簡單的依賴)mysql

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>wyb</groupId>
    <artifactId>springbootDubbo</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>api</module>
        <module>provider</module>
        <module>consumer</module>
    </modules>

    <!-- Spring Boot 啓動父依賴 -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.1.RELEASE</version>
    </parent>

    <properties>
        <dubbo-spring-boot>1.0.0</dubbo-spring-boot>
    </properties>

    <dependencies>

        <!-- Spring Boot Dubbo 依賴 -->
        <dependency>
            <groupId>io.dubbo.springboot</groupId>
            <artifactId>spring-boot-starter-dubbo</artifactId>
            <version>${dubbo-spring-boot}</version>
        </dependency>

        <!-- Spring Boot Web 依賴 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- Spring Boot Test 依賴 -->
        <!--<dependency>-->
        <!--<groupId>org.springframework.boot</groupId>-->
        <!--<artifactId>spring-boot-starter-test</artifactId>-->
        <!--<scope>test</scope>-->
        <!--</dependency>-->

        <!-- Junit -->
        <!--<dependency>-->
        <!--<groupId>junit</groupId>-->
        <!--<artifactId>junit</artifactId>-->
        <!--<version>4.12</version>-->
        <!--</dependency>-->
    </dependencies>

</project>

2.建立子工程api工程(主要是寫一些實體和接口)web

pom文件以下spring

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>springbootDubbo</artifactId>
        <groupId>wyb</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>api</artifactId>
    <dependencies>
        <dependency>
            <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.1-api</artifactId>
            <version>1.0.0.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.1-api</artifactId>
            <version>1.0.0.Final</version>
        </dependency>
        <dependency>
            <groupId>org.apache.kafka</groupId>
            <artifactId>kafka_2.11</artifactId>
            <version>0.10.0.0</version>
            <exclusions>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-log4j12</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.oracle</groupId>
            <artifactId>ojdbc6</artifactId>
            <version>11.2.0.1.0</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.1-api</artifactId>
            <version>1.0.0.Final</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
            <version>1.11.0.RELEASE</version>
        </dependency>
    </dependencies>


</project>

實體以下(Bszn)sql

package org.spring.springboot.domain;

import javax.persistence.*;
import java.io.Serializable;

@Entity
public class Bszn implements Serializable {
    private final static long serialVersionUID = 0l;
    @Id
    @SequenceGenerator(name = "BSZN_ID_GENERATOR", sequenceName = "BSZN$SEQ", allocationSize = 1)
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "BSZN_ID_GENERATOR")
    private Long id;

    @Column(name = "NAME")
    private String name;

    @Column(name = "VERSION")
    private Long version;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Long getVersion() {
        return version;
    }

    public void setVersion(Long version) {
        this.version = version;
    }
}

接口以下數據庫

package org.spring.springboot.dubbo;

import org.spring.springboot.domain.Bszn;

import java.util.List;

public interface BsznDubboService {
    List<Bszn> getBszn();
}

3.建立子工程provider工程(這裏主要寫接口的具體實現)，所以在pom中必須添加api依賴apache

注：這裏不須要再寫實體json

pom文件以下：api

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.jxust</groupId>
    <artifactId>provider</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>provider</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.2.RELEASE</version>
        <relativePath/>
        <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>wyb</groupId>
            <artifactId>api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-rest</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.15</version>
        </dependency>
        <!-- <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency> -->
        <dependency>
            <groupId>com.oracle</groupId>
            <artifactId>ojdbc6</artifactId>
            <version>11.2.0.1.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.2.8</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.2.2</version>
        </dependency>
    </dependencies>

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

</project>

resources文件配置以下：springboot

spring:
  dubbo:
    application:
      name: provider
    registry:
      address: multicast://224.5.6.7:1234（這裏是不須要配置註冊中心，直接使用組播協議，至關於本地使用）
    protocol:
      name: dubbo
      port: 20880
    scan: org.spring.springboot.dubbo
  datasource:
    driver-class-name: oracle.jdbc.OracleDriver
    url: jdbc:oracle:thin:@//***/orcl
    username: cs_test
    password: quickdone
  jpa:
    hibernate:
      ddl-auto: update
    show-sql: true
server:
  port: 8082

啓動類以下

package org.spring.springboot;

import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

import java.util.List;

@SpringBootApplication
public class ServerApplication extends WebMvcConfigurerAdapter {

    public static void main(String[] args) {
        System.out.println("provider start...");
        SpringApplication.run(ServerApplication.class, args);
    }

    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        // TODO Auto-generated method stub
        super.configureMessageConverters(converters);
        //1.須要先定義一個convert轉換消息的對象；
        FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
        //2.添加fastJson的配置信息，好比：是否要格式化返回的json數據；
        FastJsonConfig fastJsonConfig = new FastJsonConfig();
        fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
        //3.在convert中添加配置信息
        fastConverter.setFastJsonConfig(fastJsonConfig);
        //4.將convert添加到converters中
        converters.add(fastConverter);

    }
}

dao層代碼以下(這裏只作簡單的查詢，因此繼承了JpaRepository後無需再寫方法)

package org.spring.springboot.dao;

import org.spring.springboot.domain.Bszn;
import org.springframework.data.jpa.repository.JpaRepository;

public interface BsznRepository extends JpaRepository<Bszn, Integer> {

}

實現類以下(註解必須添加，須要和後面consumer作對應)

package org.spring.springboot.dubbo.impl;

import com.alibaba.dubbo.config.annotation.Service;
import org.spring.springboot.dao.BsznRepository;
import org.spring.springboot.domain.Bszn;
import org.spring.springboot.dubbo.BsznDubboService;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.List;

@Service(version = "1.0.0")
public class BsznServiceImpl implements BsznDubboService{
    @Autowired
    private BsznRepository bsznRepository;
    @Override
    public List<Bszn> getBszn() {
        List<Bszn> list = bsznRepository.findAll();
        return list;
    }
}

最後是建立子工程consumer工程

pom文件以下

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>springbootDubbo</artifactId>
        <groupId>wyb</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>consumer</artifactId>
    <packaging>jar</packaging>

    <dependencies>
        <dependency>
            <groupId>wyb</groupId>
            <artifactId>api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

    <build>
        <resources>
            <!-- 確保webapp和resource資源能被訪問 -->
            <resource>
                <directory>${basedir}/src/main/resources</directory>
                <includes>
                    <include>**/**</include>
                </includes>
            </resource>
        </resources>
        <plugins>
            <!-- 直接運行項目的插件，咱們能夠直接mvn spring-boot:run運行 -->
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

resources配置文件以下這裏必須作到dubbo的註冊地址和provider中的配置相同，否則會找不到)

server:
  port:  8081

spring:
  dubbo:
    application:
      name: consumer
    registry:
      address: multicast://224.5.6.7:1234
    scan: org.spring.springboot.dubbo

啓動類以下

package org.spring.springboot;

import org.spring.springboot.dubbo.BsznDubboConsumerService;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;

@SpringBootApplication
public class ClientApplication {

    public static void main(String[] args) {
        // 程序啓動入口
        // 啓動嵌入式的 Tomcat 並初始化 Spring 環境及其各 Spring 組件
        ConfigurableApplicationContext run = SpringApplication.run(ClientApplication.class, args);

        BsznDubboConsumerService bsznDubboConsumerService = run.getBean(BsznDubboConsumerService.class);
        bsznDubboConsumerService.printBszn();
    }
}

最後控制層以下

package org.spring.springboot.dubbo;

import com.alibaba.dubbo.config.annotation.Reference;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.spring.springboot.domain.Bszn;
import org.springframework.stereotype.Component;

import java.util.List;

@Component
public class BsznDubboConsumerService {
    private static final Logger logger = LoggerFactory.getLogger(BsznDubboConsumerService.class);

    @Reference(version = "1.0.0")
    BsznDubboService bsznDubboService;

    public void printBszn() {
        List<Bszn> list = bsznDubboService.getBszn();
        for (int i = 0; i < list.size(); i++) {
            if (i < 10) {
                System.out.println("id=" + list.get(i).getId() + ",name=" + list.get(i).getName() + ",version=" + list.get(i).getVersion());
            } else {
                break;
            }
        }
    }
}

至此，簡單的dubbo案例就已搭建完成，這裏只寫了經過數據庫進行查詢。。。