二十四、详解web项目调用dubbo的provider

我不是女神ヾ 2022-05-19 02:07 152阅读 0赞

\#                    详解web项目调用dubbo的provider

\#\#一、前言  
     在SSM框架中，我们调用（注入）的接口的实现类（@Service注解），在dubbo微服务调用中我们调用的是dubbo提供的接口类（在配置文件中声明实现类，会自动调用对应的实现类），在web项目中我们调用的是提供的**接口类型**。**在将接口类注入到Controlller中的时候，注意使用的类名是，Spring容器中定义接口id。**

\#\#二、创建父类com\_parent（pom包）

<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.yang</groupId>
      <artifactId>com_parent</artifactId>
      <version>0.0.1-SNAPSHOT</version>
      <packaging>pom</packaging>
      
      
      
       <modules>
       	<module>../com_facade</module>
       	<module>../com_service</module>
       	<module>../com_web_consumer</module>
       </modules>
      
      
      <properties>
      	  <motan.version>0.3.0</motan.version>
            
            <dubbo.version>2.8.4</dubbo.version>
            <dubbox.version>2.8.4</dubbox.version>
            <spring.version>4.3.6.RELEASE</spring.version>
      	    <mybatis.version>3.2.6</mybatis.version>
      	    <log4j.version>1.2.17</log4j.version>
      	    <slf4j.version>1.7.7</slf4j.version>
      </properties>
      
      
       <dependencies>
       	  
          <dependency>
              <groupId>com.alibaba</groupId>
              <artifactId>dubbo</artifactId>
              <version>2.8.4</version>
              <exclusions>
                  <exclusion>
                      <groupId>org.springframework</groupId>
                      <artifactId>spring</artifactId>
                  </exclusion>
              </exclusions>
          </dependency>
          <dependency>
              <groupId>com.github.sgroschupf</groupId>
              <artifactId>zkclient</artifactId>
              <version>0.1</version>
          </dependency>
       
       
          <dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-core</artifactId>
    	    <version>${spring.version}</version>
    	  </dependency>
    	  <dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-web</artifactId>
    	    <version>${spring.version}</version>
    	  </dependency>
    	  <dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-oxm</artifactId>
    	    <version>${spring.version}</version>
    	  </dependency>
    	  <dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-tx</artifactId>
    	    <version>${spring.version}</version>
    	  </dependency>
    	  <dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-jdbc</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-aop</artifactId>
    	    <version>${spring.version}</version>
    	  </dependency>
    	  <dependency>
    	    <groupId>org.springframework</groupId>
    	    <artifactId>spring-context-support</artifactId>
    	    <version>${spring.version}</version>
    	  </dependency>
    	  
    	  
    	  <dependency>
    	    <groupId>com.fasterxml.jackson.module</groupId>
    	    <artifactId>jackson-module-jaxb-annotations</artifactId>
    	    <version>2.9.5</version>
    	  </dependency>
    	  
    	 <dependency>
    	    <groupId>commons-fileupload</groupId>
    	    <artifactId>commons-fileupload</artifactId>
    	    <version>1.3.3</version>
    	 </dependency>
    	  
    	  
    	
      	<dependency>
    	    <groupId>javax.servlet</groupId>
    	    <artifactId>jstl</artifactId>
    	    <version>1.2</version>
    	</dependency>
      	<dependency>
    	    <groupId>taglibs</groupId>
    	    <artifactId>standard</artifactId>
    	    <version>1.1.2</version>
    	</dependency>
    
    
        
      	<dependency>
    	   <groupId>org.mybatis</groupId>
    	   <artifactId>mybatis</artifactId>
    	   <version>3.4.5</version>
    	</dependency>
    	
    	
    	<dependency>
    	    <groupId>org.mybatis</groupId>
    	    <artifactId>mybatis-spring</artifactId>
    	    <version>1.3.1</version>
    	</dependency>
    	
    	
    	
    	<dependency>
    	    <groupId>net.sf.ehcache</groupId>
    	    <artifactId>ehcache-core</artifactId>
    	    <version>2.6.11</version>
    	</dependency>
    	
    	
    	<dependency>
    	    <groupId>org.mybatis.caches</groupId>
    	    <artifactId>mybatis-ehcache</artifactId>
    	    <version>1.1.0</version>
    	</dependency>
    	
    	
    	
      	<dependency>
    	    <groupId>mysql</groupId>
    	    <artifactId>mysql-connector-java</artifactId>
    	    <version>6.0.6</version>
    	</dependency>		
    	
      	
      	<dependency>
    	    <groupId>org.apache.commons</groupId>
    	    <artifactId>commons-dbcp2</artifactId>
    	    <version>2.2.0</version>
    	</dependency>
    	
    	
    	<dependency>
    	    <groupId>org.ow2.asm</groupId>
    	    <artifactId>asm</artifactId>
    	    <version>6.1.1</version>
    	</dependency>
    	
    	
    	<dependency>
    	    <groupId>log4j</groupId>
    	    <artifactId>log4j</artifactId>
    	    <version>1.2.16</version>
    	</dependency>
    	
    	
    	<dependency>
    	    <groupId>org.slf4j</groupId>
    	    <artifactId>slf4j-api</artifactId>
    	    <version>1.7.25</version>
    	</dependency>
    	<dependency>
    	    <groupId>org.slf4j</groupId>
    	    <artifactId>slf4j-log4j12</artifactId>
    	    <version>1.7.25</version>
    	    <scope>test</scope>
    	</dependency>
    	
    	
    	  
          <dependency>
    	    <groupId>org.aspectj</groupId>
    	    <artifactId>aspectjweaver</artifactId>
    	    <version>1.8.13</version>
    	  </dependency>
      </dependencies>
     
     
      <build>
    	<plugins>
    	    
    		<plugin>
    			<artifactId>maven-compiler-plugin</artifactId>
    			<configuration>
    				<source>1.8</source>
    				<target>1.8</target>
    			</configuration>
    		</plugin>
    		
    		
    		<plugin>  
    			<groupId>org.eclipse.m2e</groupId>  
    			<artifactId>lifecycle-mapping</artifactId>  
    			<version>1.0.0</version>  
    			<configuration>  
    				<lifecycleMappingMetadata>  
    					<pluginExecutions>  
    						  
    						<pluginExecution>  
    							<pluginExecutionFilter>  
    								<groupId>org.apache.maven.plugins</groupId>  
    								<artifactId>maven-dependency-plugin</artifactId>  
    								<versionRange>[2.0,)</versionRange>  
    								<goals>  
    									<goal>copy-dependencies</goal>  
    								</goals>  
    							</pluginExecutionFilter>  
    							<action>  
    								<ignore />  
    							</action>  
    						</pluginExecution>  
    					</pluginExecutions>  
    				</lifecycleMappingMetadata>  
    			</configuration>  
    		</plugin>  
    		
    	</plugins>
      </build>
     
     
    </project>

\#\#二、com\_web\_consumer项目基本配置

\#\#\#1、pom.xml文件

\#\#\#2、spring.xml

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
    	xmlns:aop="http://www.springframework.org/schema/aop" 
    	xmlns:context="http://www.springframework.org/schema/context"
    	xmlns:mvc="http://www.springframework.org/schema/mvc" 
    	xmlns:tx="http://www.springframework.org/schema/tx"
    	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    	xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
    	xsi:schemaLocation="http://www.springframework.org/schema/aop 
    		http://www.springframework.org/schema/aop/spring-aop-3.0.xsd 
    		http://www.springframework.org/schema/beans 
    		http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
    		http://www.springframework.org/schema/context 
    		http://www.springframework.org/schema/context/spring-context-3.0.xsd 
    		http://www.springframework.org/schema/mvc 
    		http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd 
    		http://www.springframework.org/schema/tx 
    		http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
    		http://code.alibabatech.com/schema/dubbo
    		http://code.alibabatech.com/schema/dubbo/dubbo.xsd"
    		default-autowire="byName" default-lazy-init="false">
    
    	    
    		<context:annotation-config />
    		<dubbo:annotation package="com.yang"/>
    		<context:component-scan base-package="com.yang" />
    		<dubbo:application name="com_consumer" />
    		<dubbo:registry timeout="100000" address="zookeeper://192.168.1.105:2181?backup=192.169.1.106:2181,192.168.1.107:2181" />
    		
    		<dubbo:reference id="enterprise" interface="com.yang.repo.EnterpriseService" />
    		
    		
    </beans>

\#\#\#3、springmvc.xml

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
    	xmlns:aop="http://www.springframework.org/schema/aop" 
    	xmlns:context="http://www.springframework.org/schema/context"
    	xmlns:mvc="http://www.springframework.org/schema/mvc" 
    	xmlns:tx="http://www.springframework.org/schema/tx"
    	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    	xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
    	xsi:schemaLocation="http://www.springframework.org/schema/aop 
    		http://www.springframework.org/schema/aop/spring-aop-3.0.xsd 
    		http://www.springframework.org/schema/beans 
    		http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
    		http://www.springframework.org/schema/context 
    		http://www.springframework.org/schema/context/spring-context-3.0.xsd 
    		http://www.springframework.org/schema/mvc 
    		http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd 
    		http://www.springframework.org/schema/tx 
    		http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
    		http://code.alibabatech.com/schema/dubbo
    		http://code.alibabatech.com/schema/dubbo/dubbo.xsd"
    		default-autowire="byName" default-lazy-init="false">
    	
    	<mvc:annotation-driven />
    	<context:component-scan base-package="com.yang.controller" />
    	
    	
    	
    	
    	<bean
    		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    		
    		<property name="prefix" value="/WEB-INF/jsp/" />
    		<property name="suffix" value=".jsp" />
    	</bean>
    	
    </beans>

\#\#\#4、EnterpriseController.java

package com.yang.controller;
    
    import javax.annotation.Resource;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Component;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    import com.alibaba.dubbo.config.annotation.Reference;
    import com.yang.model.Enterprise;
    import com.yang.repo.EnterpriseService;
    
    
    @Controller
    public class EnterpriseController {
    	
    	//这个注入的是在dubbo中声明的接口
    	@Resource(name="enterprise")
    	private EnterpriseService enterprise;
    	
    	@RequestMapping("/getName")
    	@ResponseBody
    	public Enterprise getName() {
    		return  enterprise.selectByPrimaryKey(1);
    	}
    }

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25ld2JpZV85MDc0ODY4NTI_size_16_color_FFFFFF_t_70_pic_center][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25ld2JpZV85MDc0ODY4NTI_size_16_color_FFFFFF_t_70_pic_center]: /images/20220519/9ac565b0e2084f77868857d32808b482.png