Dubbo

1.简介

分为服务提供者、服务消费者、注册中心（使用zookeeper）、监听

2. 代码实现

代码结构：分为服务提供者stu_server 、服务消费者stu_client、公共模块stu_interface
具体实现：

服务提供者--stu_server

applicationContext.xml : web项目，服务端需要集成Spring框架所必须的Spring的配置文件

<?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" xmlns:context="http://www.springframework.org/schema/context"
       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 http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

    <!--配置服务提供方的dubbo的应用名称-->
    <dubbo:application name="stu-server">
        <dubbo:parameter key="qos.prot" value="22222"></dubbo:parameter>
    </dubbo:application>
    <!--配置zookeeper-->
    <dubbo:registry protocol="zookeeper" address="zookeeper://192.168.1.2:2181"/>
    <!--配置dubbo扫描包:将注解所在的包（Service）放到扫描器里面，此处是针对Alibaba-->
    <dubbo:annotation package="com.sutdent.serviceImpl"/>
    <!--配置Spring的包扫描，此处可以免去Spring包扫描的配置，只使用dubbo的就可以-->
    <!--<context:component-scan base-package="com.sutdent.serviceImpl"/>-->

</beans>

Spring Web项目，需要的目录Webapp-->web.xml : 让Spring的配置文件applicationContext.xml被Spring识别到并生效

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

    <!--配置Spring，使用Spring的配置文件，生效-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

</web-app>

ServiceImpl 处理类：

package com.sutdent.serviceImpl;

import org.apache.dubbo.config.annotation.Service;
import service.StudentService;

@Service
//此处的@Service注解是alibaba的（apache），不是Spring的
public class StudentServiceImpl implements StudentService {

    public String addStudet(String name) {

        return name+"Yes";
    }
}

pom.xml

<?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>org.example</groupId>
    <artifactId>stu_server</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <properties>
        <spring.version>5.1.9.RELEASE</spring.version>
        <dubbo.version>2.7.4.1</dubbo.version>
        <zookeeper.version>4.0.0</zookeeper.version>
    </properties>

    <dependencies>
        <!--Servlet3.0规范坐标-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>
        <!--Spring坐标-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--SpringMvc坐标-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--日志-->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.36</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.7</version>
        </dependency>

        <!--dubbo依赖-->
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo</artifactId>
            <version>${dubbo.version}</version>
        </dependency>
        <!--ZookeePer客户端实现-->
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>${zookeeper.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-recipes</artifactId>
            <version>${zookeeper.version}</version>
        </dependency>
        <!--引入公共接口模块，Service调用-->
        <dependency>
            <groupId>org.example</groupId>
            <artifactId>stu_interface</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>
    <!--内置tomcat插件-->
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.1</version>
                <configuration>
                    <port>8090</port>
                    <path>/</path>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

服务消费者（作为SpringMVCM，服务调用端）stu_client

springmvc.xml 配置文件：

<?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" xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       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
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

        <!--让mvc扫描到控制器controller-->
        <mvc:annotation-driven></mvc:annotation-driven>
        <context:component-scan base-package="com.student.controller"></context:component-scan>

        <!--配置服务提供方的dubbo的应用名称-->
        <dubbo:application name="stu-client">
                <dubbo:parameter key="qos.prot" value="33333"></dubbo:parameter>
        </dubbo:application>
        <!--配置zookeeper-->
        <dubbo:registry protocol="zookeeper" address="zookeeper://192.168.1.2:2181"/>
        <!--配置dubbo扫描包:将注解所在的包（Service）放到扫描器里面，此处是针对Alibaba-->
        <dubbo:annotation package="com.student.controller"/>

</beans>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

    <!--配置SpringMVC-->
    <servlet>
        <servlet-name>springMvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    
    <servlet-mapping>
        <servlet-name>springMvc</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
    
</web-app>

处理类：

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import service.StudentService;

@RestController
@RequestMapping("controller")
public class StuController {

    @Reference
    private StudentService studentService;

    @RequestMapping("sayHello")
    public String sayHello(String name) {

        String maky = studentService.addStudet("KittyWith");

        System.out.println(maky);
        return maky;
    }
}

pom.xml

<?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>org.example</groupId>
    <artifactId>stu_client</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <properties>
        <spring.version>5.1.9.RELEASE</spring.version>
        <dubbo.version>2.7.4.1</dubbo.version>
        <zookeeper.version>4.0.0</zookeeper.version>
    </properties>

    <dependencies>
        <!--Servlet3.0规范坐标-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>
        <!--Spring坐标-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--SpringMvc坐标-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--日志-->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.36</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.7</version>
        </dependency>

        <!--dubbo依赖-->
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo</artifactId>
            <version>${dubbo.version}</version>
        </dependency>
        <!--ZookeePer客户端实现-->
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>${zookeeper.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-recipes</artifactId>
            <version>${zookeeper.version}</version>
        </dependency>
        <!--引入公共接口模块，Service调用-->
        <dependency>
            <groupId>org.example</groupId>
            <artifactId>stu_interface</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

    <!--tomcat插件-->
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.1</version>
                <configuration>
                    <port>8088</port>
                    <path>/</path>
                </configuration>
            </plugin>
        </plugins>
    </build>


</project>

公共模块：stu_interface 把接口提成公共的

接口：

package service;

public interface StudentService {

    public String addStudet(String name);
}

其余无特殊配置，该模块为服务提供者、调用者pom中共同引入的公共模块

调用地址：http://localhost:8088/controller/sayHello.do

此处需要注意项目的启动方式：

maven项目启动，在pom中引入tomcat 插件依赖，在idea中配置

依赖：

查看代码

 <build>
        <plugins>
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.1</version>
                <configuration>
                    <port>8090</port>
                    <path>/</path>
                </configuration>
            </plugin>
        </plugins>
</build>

posted @ 2022-10-07 11:31 许君闲乘悦阅读(42) 评论(0) 编辑收藏举报

许君闲乘悦

Dubbo

1.简介

2. 代码实现

公告