Dubbo开发环境及简单Dubbo程序

不念不忘少年蓝@ 2023-10-06 09:02 15阅读 0赞

#### Dubbo开发环境及简单Dubbo程序 ####

*  开发dubbo程序
 *   *  1.准备环境
     *  2.写代码
 *  举例：student-server与student-client
 *   *  student-server
     *  student-client
     *   *  将Controller中的内容 直接打印到 浏览器中

**软件架构经历：**

## 开发dubbo程序 ##

### 1.准备环境 ###

1、在LINUX安装JDK  
2、安装zookeeper

1）下载zookeeper，传到Linux，并且解压
    	2） 重命名zookeeper的配置文件：zoo_sample.cfg改名为zoo.cfg
    	3）	在zoo.cfg中：可以发现 zookeeper的端口号是 clientPort=2181
    	4）在zookeeper文件夹下新建data文件夹，将zoo.cfg中的dataDir=
    	xxxx更改为dataDir=/apps/zookeeper-3.4.14/data

3、启动zookeeper

注意不要在bin目录中启动，而是要退到bin目录的上级目录去启动

启动：  
![在这里插入图片描述][20200517154308672.png]  
停止:  
![在这里插入图片描述][20200517154322464.png]  
查看状态：  
![在这里插入图片描述][20200517154349822.png]

### 2.写代码 ###

## 举例：student-server与student-client ##

首先建立一个maven项目，然后再在webapp下建立WEB-INF 然后建立web.xml  
![在这里插入图片描述][20200518213939144.png]

### student-server ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxMDQwNTU5_size_16_color_FFFFFF_t_70]  
**pom.xml：**

<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.dubbo</groupId>
      <artifactId>student-server</artifactId>
      <version>0.0.1-SNAPSHOT</version>
      <packaging>war</packaging>
       
      <properties>
      	<spring.version>4.3.17.RELEASE</spring.version>
      </properties>
      
      <dependencies>
    	<dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-context</artifactId>
    	    <version>${spring.version}</version>
    	</dependency>
    
    	<dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-beans</artifactId>
    	    <version>${spring.version}</version>
    	</dependency>
    	
    	<dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-webmvc</artifactId>
    	    <version>${spring.version}</version>
    	</dependency>
    	
    	<dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-aspects</artifactId>
    	    <version>${spring.version}</version>
    	</dependency>
    	
    	<dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-jms</artifactId>
    	    <version>${spring.version}</version>
    	</dependency>
    	
    	  <dependency>
    	    <groupId>commons-logging</groupId>
    	    <artifactId>commons-logging</artifactId>
    	    <version>1.1.1</version>
    	</dependency>
    	
    	
    	<dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-context-support</artifactId>
    	    <version>${spring.version}</version>
    	</dependency>
    	
    	
    	<dependency>
    	    <groupId>com.alibaba</groupId>
    	    <artifactId>dubbo</artifactId>
    	    <version>2.5.10</version>
    	</dependency>
    	
    	
    	<dependency>
    	    <groupId>org.apache.zookeeper</groupId>
    	    <artifactId>zookeeper</artifactId>
    	    <version>3.4.12</version>
    	</dependency>
    	
    	
    	<dependency>
    	    <groupId>com.github.sgroschupf</groupId>
    	    <artifactId>zkclient</artifactId>
    	    <version>0.1</version>
    	</dependency>
    	
    	
    	<dependency>
    	    <groupId>org.javassist</groupId>
    	    <artifactId>javassist</artifactId>
    	    <version>3.21.0-GA</version>
    	</dependency>
    	  
      </dependencies>
      
          
     <build>
      <plugins>
    	    <plugin>
    	        <groupId>org.apache.maven.plugins</groupId>
    	        <artifactId>maven-compiler-plugin</artifactId>
    	        <version>3.7.0</version>
    	        <configuration>
    	            <source>1.8</source>
    	            <target>1.8</target>
    	            <encoding>UTF8</encoding>
    	        </configuration>
    	    </plugin>
    	 	
    	 	
    	    <plugin>
    	    <groupId>org.apache.tomcat.maven</groupId>
    	    <artifactId>tomcat7-maven-plugin</artifactId>
    	    <configuration>
    	        <port>8881</port>
    	        <path>/</path>          
    	     </configuration>
    	</plugin> 
    	</plugins>
    	</build>
      
    </project>

**注意：为了模拟在不同电脑上所以服务端和客户端的端口号不能相同。**

**web.xml:**

**applicationContext.xml：**

<?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: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://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
    		http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
    		
    		
    	
    	<dubbo:application name="students-server" />
    	
    	<dubbo:registry protocol="zookeeper" address="zookeeper://192.168.80.27:2181"  />
    	
    	
    	<dubbo:annotation package="org.student.server.impl" />
    
    	
    	<context:component-scan base-package="org.student.server.impl"></context:component-scan>
    
    </beans>

**注意：@Service所在的包要放两次，一次放入IOC容器，一次放入dubbo扫描**

**studentServer:**

package org.student.server;
    
    public interface studentServer {
        
    	
    	public String server(String name);
    }

**studentServerImpl:**

package org.student.server.impl;
    
    import org.student.server.studentServer;
    
    import com.alibaba.dubbo.config.annotation.Service;
    
    @Service//是Alibaba的@service
    public class studentServerImpl implements studentServer{
        
    
    	public String server(String name) {
        
    		
    		return "server进行了对应工作："+name;
    	}
    
    }

**注意：@Service是Alibaba的@service不要导错包**

--------------------

### student-client ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxMDQwNTU5_size_16_color_FFFFFF_t_70 1]

**pom.xml:**

<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.dubbo</groupId>
      <artifactId>student-client</artifactId>
      <version>0.0.1-SNAPSHOT</version>
      <packaging>war</packaging>
      
      
      <properties>
      	<spring.version>4.3.17.RELEASE</spring.version>
      </properties>
      
      <dependencies>
    	<dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-context</artifactId>
    	    <version>${spring.version}</version>
    	</dependency>
    
    	<dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-beans</artifactId>
    	    <version>${spring.version}</version>
    	</dependency>
    	
    	<dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-webmvc</artifactId>
    	    <version>${spring.version}</version>
    	</dependency>
    	
    	<dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-aspects</artifactId>
    	    <version>${spring.version}</version>
    	</dependency>
    	
    	<dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-jms</artifactId>
    	    <version>${spring.version}</version>
    	</dependency>
    	
    	  <dependency>
    	    <groupId>commons-logging</groupId>
    	    <artifactId>commons-logging</artifactId>
    	    <version>1.1.1</version>
    	</dependency>
    	
    	
    	<dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-context-support</artifactId>
    	    <version>${spring.version}</version>
    	</dependency>
    	
    	
    	<dependency>
    	    <groupId>com.alibaba</groupId>
    	    <artifactId>dubbo</artifactId>
    	    <version>2.5.10</version>
    	</dependency>
    	
    	
    	<dependency>
    	    <groupId>org.apache.zookeeper</groupId>
    	    <artifactId>zookeeper</artifactId>
    	    <version>3.4.12</version>
    	</dependency>
    	
    	
    	<dependency>
    	    <groupId>com.github.sgroschupf</groupId>
    	    <artifactId>zkclient</artifactId>
    	    <version>0.1</version>
    	</dependency>
    	
    	
    	<dependency>
    	    <groupId>org.javassist</groupId>
    	    <artifactId>javassist</artifactId>
    	    <version>3.21.0-GA</version>
    	</dependency>
    	  
      </dependencies>
      
          
     <build>
      <plugins>
    	    <plugin>
    	        <groupId>org.apache.maven.plugins</groupId>
    	        <artifactId>maven-compiler-plugin</artifactId>
    	        <version>3.7.0</version>
    	        <configuration>
    	            <source>1.8</source>
    	            <target>1.8</target>
    	            <encoding>UTF8</encoding>
    	        </configuration>
    	    </plugin>
    	 	
    	 	
    	    <plugin>
    	    <groupId>org.apache.tomcat.maven</groupId>
    	    <artifactId>tomcat7-maven-plugin</artifactId>
    	    <configuration>
    	        <port>8882</port>
    	        <path>/</path>          
    	     </configuration>
    	</plugin> 
    	</plugins>
    	</build>
      
    </project>

**与服务端的web.xml相同，唯一不同的就是端口号。**

**web.xml:**

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
     
      
      <filter>
      	<filter-name>CharacterEncodingfilter</filter-name>
      	<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
      	<init-param>
      		<param-name>encoding</param-name>
      		<param-value>UTF-8</param-value>
      	</init-param>
      		<init-param>
      		<param-name>foreEncoding</param-name>
      		<param-value>UTF-8</param-value>
      	</init-param>
      </filter>
      
      <filter-mapping>
      	<filter-name>CharacterEncodingfilter</filter-name>
    	<url-pattern>/*</url-pattern>
      </filter-mapping>
    
    
      <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</param-value>  		
      	</init-param>
      </servlet>
      
      <servlet-mapping>
      	<servlet-name>dispatcherServlet</servlet-name>
      	<url-pattern>*.action</url-pattern> 
      </servlet-mapping>
    </web-app>

**注意：访问时要加上 .atction 才会被springMVC接管**

**springmvc.xml：**

<?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:mvc="http://www.springframework.org/schema/mvc"
    	xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
    	xmlns:context="http://www.springframework.org/schema/context"
    	xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
    		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-4.2.xsd
    		http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
    	<mvc:annotation-driven>
    		
    		<mvc:message-converters register-defaults="false">
    			<bean class="org.springframework.http.converter.StringHttpMessageConverter">
    					<constructor-arg value="UTF-8"/>
    				</bean>
    		</mvc:message-converters>
    	</mvc:annotation-driven>
    	
    	
    	
    	
    	
    	
    
    	
    	<dubbo:application name="students-consumer"/>
    	
    	<dubbo:registry address="zookeeper://192.168.80.27:2181" />
    	
    	
    	
    	
    	
    	<dubbo:annotation  package="org.controller"/>
    	
    	<context:component-scan base-package="org.controller"></context:component-scan>
    		
    </beans>

#### 将Controller中的内容 直接打印到 浏览器中 ####

<mvc:annotation-driven>
    		
    		<mvc:message-converters register-defaults="false">
    			<bean class="org.springframework.http.converter.StringHttpMessageConverter">
    					<constructor-arg value="UTF-8"/>
    				</bean>
    		</mvc:message-converters>
    	</mvc:annotation-driven>

**studentServer:**

就是服务端的studentServer接口，复制了一份而已

**StudentController：**

package org.controller;
    
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    import org.student.server.studentServer;
    
    import com.alibaba.dubbo.config.annotation.Reference;
    
    @RestController
    @RequestMapping("/controller")
    public class StudentController {
        
    
    	@Reference//远程注入
    private	studentServer server;
    	
    	@RequestMapping("/test")
    	public String rpcServer() {
        
    		String result = server.server("zhangsan");
    		return result;
    	}
    }

**注意：@Reference （远程注入）  
这里不再使用@Autowire：（是从本项目中自动注入）**

--------------------

然后在Linux中启动zookeeper。  
再由客户端进行访问：http://localhost:8882/controller/test.action

[20200517154308672.png]: https://img-blog.csdnimg.cn/20200517154308672.png
[20200517154322464.png]: https://img-blog.csdnimg.cn/20200517154322464.png
[20200517154349822.png]: https://img-blog.csdnimg.cn/20200517154349822.png
[20200518213939144.png]: https://img-blog.csdnimg.cn/20200518213939144.png
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxMDQwNTU5_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200518215201177.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxMDQwNTU5,size_16,color_FFFFFF,t_70