dubbo 代码生成 dubbo详细教程

文章目录

• 001-前言
• 002-初始Dubbo
• 003-Dubbo框架

• 3.1 概述
• 3.2 dubbo支持的协议
• 3.3 dubbo的使用——直连方式

• （1）服务的提供者provider
• （2）服务的消费者
• （3）实现

• 3.4 dubbo服务最佳化实践

• 改造直连方式

• 004-注册中心-Zookeeper

• 4.1 介绍
• 4.2 使用注册中心

• 005-dubbo的配置

• 5.1 dubbo版本号的使用

• 006-监控中心

001-前言

002-初始Dubbo

003-Dubbo框架

3.1 概述

dubbo官网

3.2 dubbo支持的协议

3.3 dubbo的使用——直连方式

不使用注册中心

（1）服务的提供者provider

创建空项目 再创建webapp maven模块

<?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.wkcto.dubbo</groupId>
  <artifactId>001-link-userservice-provider</artifactId>
  <version>1.0.0</version>
  <packaging>war</packaging>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>

  <dependencies>
    <!--spring依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>4.3.16.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.16.RELEASE</version>
    </dependency>

    <!--dubbo依赖-->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>dubbo</artifactId>
      <version>2.6.2</version>
    </dependency>
  </dependencies>

</project>

---

---

---

<?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://dubbo.apache.org/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd">

    <!--服务提供者声明名称：必须保证服务名称的唯一性，它的名称是dubbo内部使用的唯一标识-->
    <!--用的是apache的dubbo-->
    <dubbo:application name="001-link-userservice-provider"></dubbo:application>

    <!--访问服务协议的名称及端口号 dubbo官方推荐使用dubbo协议 默认端口号20880-->
    <dubbo:protocol name="dubbo" port="20880"></dubbo:protocol>

    <!--
        暴露服务接口->dubbo:service
        interface:要暴露的服务接口的全限定类名
        ref:接口的实现类在spring容器中的标识
        register:如果不使用注册中心，则值为N/A 直连方式
    -->
    <dubbo:service interface="com.wkcto.dubbo.service.UserService" ref="userService" register="N/A"></dubbo:service>

    <!--将接口的实现类加载到spring容器中-->
    <bean id="userService" class="com.wkcto.dubbo.service.impl.UserServiceImpl"></bean>

</beans>

---

（2）服务的消费者

maven创建web模块

<?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.wkcto.dubbo</groupId>
  <artifactId>002-link-consumer</artifactId>
  <version>1.0.0</version>
  <packaging>war</packaging>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>

  <dependencies>
    <!--spring依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>4.3.16.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.16.RELEASE</version>
    </dependency>

    <!--dubbo依赖-->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>dubbo</artifactId>
      <version>2.6.2</version>
    </dependency>

    <!--依赖服务提供者-->
    <dependency>
      <groupId>com.wkcto.dubbo</groupId>
      <artifactId>001-link-userservice-provider</artifactId>
      <version>1.0.0</version>
    </dependency>
  </dependencies>

</project>

---

<?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://dubbo.apache.org/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd">

    <!--声明服务消费者的名称：保证唯一性-->
    <dubbo:application name="002-link-consumer"></dubbo:application>

    <!--
        引用远程服务接口：
        id:远程服务接口对象名称
        interface:调用远程接口的全限定类名
        url:访问服务接口的地址 固定写法
        registry:不使用注册中心 则值为N/A
    -->
    <dubbo:reference
            id="userService"
            interface="com.wkcto.dubbo.service.UserService"
            url="dubbo://localhost:20880" registry="N/A"></dubbo:reference>


</beans>

---

---

<?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:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--扫描组件-->
    <context:component-scan base-package="com.wkcto.dubbo.controller"></context:component-scan>

    <!--配置注解驱动-->
    <mvc:annotation-driven></mvc:annotation-driven>

    <!--视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
</beans>

---

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
    
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml,classpath:dubbo-consumer.xml</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
</web-app>

---

部署一个新的tomcat

（3）实现

首先修改错误：

还有一个错误就是 将registry 写成了 register

先启动服务提供者tomcat
再启动服务消费者tomcat

---

3.4 dubbo服务最佳化实践

改造直连方式

将接口和实体类 单独放在一个接口工程中

---

首先创建接口工程 使用maven创建一个java模块 不使用archetype

---

使用maven webapp创建服务提供者和服务消费者

---

---

<?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.wkcto.dubbo</groupId>
  <artifactId>004-link-userservice-provider</artifactId>
  <version>1.0.0</version>
  <packaging>war</packaging>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>

  <dependencies>
    <!--spring依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>4.3.16.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.16.RELEASE</version>
    </dependency>

    <!--dubbo依赖-->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>dubbo</artifactId>
      <version>2.6.2</version>
    </dependency>

    <!--接口工程-->
    <dependency>
      <groupId>com.wkcto.dubbo</groupId>
      <artifactId>003-link-interface</artifactId>
      <version>1.0.0</version>
    </dependency>
    
  </dependencies>
</project>

<?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://dubbo.apache.org/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd">

    <!--声明dubbo服务提供者的名称：保证唯一性-->
    <dubbo:application name="004-link-userservice-provider"></dubbo:application>

    <!--设置dubbo使用的协议和端口号-->
    <dubbo:protocol name="dubbo" port="20880"></dubbo:protocol>

    <!--暴露服务接口-->
    <dubbo:service interface="com.wkcto.dubbo.service.UserService" ref="userService" registry="N/A"></dubbo:service>

    <!--加载业务接口实现类到spring容器中-->
    <bean id="userService" class="com.wkcto.dubbo.service.impl.UserServiceImpl"></bean>
</beans>

---

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">

    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml,classpath:dubbo-consumer.xml</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

---

先启动004服务提供者 再启动005服务消费者

004-注册中心-Zookeeper

4.1 介绍

使用注册中心 不使用直连方式

---

按照视频安装

4.2 使用注册中心

首先创建接口工程 maven java 模块

然后创建maven webapp 服务提供者和服务消费者

---

---

<?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.bjpowernode.dubbo</groupId>
  <artifactId>007-zk-userservice-provider</artifactId>
  <version>1.0.0</version>
  <packaging>war</packaging>


  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>

  <dependencies>
  <!--spring依赖-->
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>4.3.16.RELEASE</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>4.3.16.RELEASE</version>
  </dependency>

  <!--dubbo依赖-->
  <dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>dubbo</artifactId>
    <version>2.6.2</version>
  </dependency>

  <!--接口工程-->
    <dependency>
      <groupId>com.bjpowernode.dubbo</groupId>
      <artifactId>006-zk-interface</artifactId>
      <version>1.0.0</version>
    </dependency>

    <!--zookeeper依赖-->
    <dependency>
      <groupId>org.apache.curator</groupId>
      <artifactId>curator-framework</artifactId>
      <version>4.1.0</version>
    </dependency>

  </dependencies>
</project>

<?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://dubbo.apache.org/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd">

    <!--声明dubbo服务提供者的名称：保证唯一性-->
    <dubbo:application name="007-zk-userservice-provider"></dubbo:application>

    <!--设置dubbo使用的协议和端口号-->
    <dubbo:protocol name="dubbo" port="20880"></dubbo:protocol>

    <!--现在要使用zookeeper注册中心-->
    <!--指定注册中心地址和端口号-->
    <dubbo:registry address="zookeeper://localhost:2181"></dubbo:registry>

    <!--暴露服务接口-->
    <dubbo:service interface="com.bjpowernode.dubbo.service.UserService" ref="userServiceImpl"></dubbo:service>

    <!--加载业务接口实现类到spring容器中-->
    <bean id="userServiceImpl" class="com.bjpowernode.dubbo.service.impl.UserServiceImpl"></bean>
</beans>

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:dubbo-zk-userservice-provider.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
</web-app>

---

<?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://dubbo.apache.org/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd">

    <!--声明dubbo服务消费者的名称：保证唯一性-->
    <dubbo:application name="008-zk-comsumer"></dubbo:application>

    <!--指定注册中心地址和端口号-->
    <dubbo:registry address="zookeeper://localhost:2181"></dubbo:registry>

    <!--引用远程接口服务-->
    <dubbo:reference id="userService" interface="com.bjpowernode.dubbo.service.UserService"></dubbo:reference>
</beans>

<?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:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--扫描组件-->
    <context:component-scan base-package="com.bjpowernode.dubbo.controller"></context:component-scan>

    <!--配置注解驱动-->
    <mvc:annotation-driven></mvc:annotation-driven>

    <!--视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
</beans>

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">

    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml,classpath:dubbo-zk-consumer.xml</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

---

先启动zookeeper

然后先启动服务提供者 再启动服务消费者

005-dubbo的配置

5.1 dubbo版本号的使用

如果同一个接口有多个实现类 需要通过版本号还来区分

不管是否一个接口有多个实现类，只要服务提供者暴露服务接口的时候指定了版本号
消费者引用远程接口服务的时候就必须指定版本号

006-监控中心