1、安装好jdk、zookeeper以后可以尝试开发代码进行dubbo的学习和练习。
首先创建Dubbo的Provider配置。创建一个maven project工程。
RPC框架,不希望Consumer知道具体实现.如果实现类和接口在同一个项目中,Consumer依赖这个项目时,就会知道实现类具体实现。
所以Provider和Consumer创建不同的项目。
然后接口项目包里面创建一个接口，并提供一个简单的接口方法。
2、然后创建Dubbo的Provider配置。创建一个maven project工程。
为了可以引用dubbo-service项目包，需要将dubbo-service的项目坐标加进来。
配置maven的pom.xml文件。
代码语言：javascript复制 1 <project xmlns="http://maven.apache.org/POM/4.0.0"
2 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
3 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
4 http://maven.apache.org/xsd/maven-4.0.0.xsd">
5 <modelVersion>4.0.0</modelVersion>
6 <groupId>com.bie</groupId>
7 <artifactId>dubbo-service-impl</artifactId>
8 <version>0.0.1-SNAPSHOT</version>
9
10 <!-- 为了可以引用dubbo-service项目包，需要将dubbo-service的项目坐标加进来 -->
11 <dependencies>
12 <dependency>
13 <groupId>com.bie</groupId>
14 <artifactId>dubbo-service</artifactId>
15 <version>0.0.1-SNAPSHOT</version>
16 </dependency>
17 <!-- https://mvnrepository.com/artifact/com.alibaba/dubbo -->
18 <!-- dubbo -->
19 <dependency>
20 <groupId>com.alibaba</groupId>
21 <artifactId>dubbo</artifactId>
22 <version>2.5.3</version>
23 <!-- 排除dubbot2.5.3版本的spring2.5.6版本，依赖dubbo,去掉老版本spring -->
24 <exclusions>
25 <exclusion>
26 <groupId>org.springframework</groupId>
27 <artifactId>spring</artifactId>
28 </exclusion>
29 </exclusions>
30 </dependency>
31 <!-- spring，依赖新版本spring -->
32 <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
33 <dependency>
34 <groupId>org.springframework</groupId>
35 <artifactId>spring-webmvc</artifactId>
36 <version>4.1.6.RELEASE</version>
37 </dependency>
38 <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
39 <dependency>
40 <groupId>org.springframework</groupId>
41 <artifactId>spring-context</artifactId>
42 <version>4.1.6.RELEASE</version>
43 </dependency>
44 <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
45 <dependency>
46 <groupId>org.springframework</groupId>
47 <artifactId>spring-core</artifactId>
48 <version>4.1.6.RELEASE</version>
49 </dependency>
50 <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
51 <dependency>
52 <groupId>org.springframework</groupId>
53 <artifactId>spring-web</artifactId>
54 <version>4.1.6.RELEASE</version>
55 </dependency>
56 <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
57 <dependency>
58 <groupId>org.springframework</groupId>
59 <artifactId>spring-beans</artifactId>
60 <version>4.1.6.RELEASE</version>
61 </dependency>
62 <!-- https://mvnrepository.com/artifact/org.springframework/spring-aop -->
63 <dependency>
64 <groupId>org.springframework</groupId>
65 <artifactId>spring-aop</artifactId>
66 <version>4.1.6.RELEASE</version>
67 </dependency>
68 <!-- <dependency>
69 <groupId>org.apache.zookeeper</groupId>
70 <artifactId>zookeeper</artifactId>
71 <version>3.4.7</version>
72 </dependency>
73 <dependency>
74 <groupId>com.github.sgroschupf</groupId>
75 <artifactId>zkclient</artifactId>
76 <version>0.1</version>
77 </dependency> -->
78 <!-- https://mvnrepository.com/artifact/com.101tec/zkclient -->
79 <!-- 访问zookeeper客户端jar包，依赖zookeeper客户端工具zkClient -->
80 <dependency>
81 <groupId>com.101tec</groupId>
82 <artifactId>zkclient</artifactId>
83 <version>0.10</version>
84 </dependency>
85
86 </dependencies>
87
88 </project>创建实现接口的实现类：
代码语言：javascript复制 1 package com.bie.impl;
2
3 import com.bie.service.UserService;
4
5 /**
6 *
7 * @author biehl
8 *
9 * UserServiceImpl实现UserService接口
10 */
11 public class UserServiceImpl implements UserService {
12
13 public String showUser(String name) {
14 String str = "您好，您的姓名是：" name;
15 return str;
16 }
17
18 }配置applicationContext-dubbo.xml配置文件。
代码语言：javascript复制 1 <?xml version="1.0" encoding="UTF-8"?>
2 <beans xmlns="http://www.springframework.org/schema/beans"
3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 xmlns:context="http://www.springframework.org/schema/context"
5 xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
6 xsi:schemaLocation="http://www.springframework.org/schema/beans
7 http://www.springframework.org/schema/beans/spring-beans.xsd
8 http://www.springframework.org/schema/context
9 http://www.springframework.org/schema/context/spring-context.xsd
10 http://code.alibabatech.com/schema/dubbo
11 http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
12
13 <!-- 1、首先给当前的provider起一个名称,方便监控中心进行监控，给provider起名,在monitor或管理工具中区别是哪个provider -->
14 <dubbo:application name="dubbo-service-impl" />
15 <!-- 2、配置注册中心,protocol="zookeeper"代表了是dubbo协议，protocol使用哪种注册中心，地址是192.168.110.140:2181，address注册中心的ip和端口，配置注册中心 -->
16 <dubbo:registry address="192.168.110.140:2181"
17 protocol="zookeeper"></dubbo:registry>
18 <!-- 3、配置端口,name="dubbo"代表从注册中心获取到值,port="20880"是consumer访问provider使用的。配置协议，name 使用什么协议， port: consumer invoke provider时的端口号 -->
19 <dubbo:protocol name="dubbo" port="20880"></dubbo:protocol>
20 <!-- 4、注册功能,注册是注册接口，不是注册实现类的,ref=""代表的是实现类的bean。注册接口， ref 引用接口实现类<bean>的id值 -->
21 <dubbo:service interface="com.bie.service.UserService"
22 ref="userServiceImpl"></dubbo:service>
23
24 <!-- 注册UserService的bean对象 -->
25 <bean id="userServiceImpl" class="com.bie.impl.UserServiceImpl"></bean>
26
27 </beans> 测试类如下所示：
3、然后创建Dubbo的Consumer配置。创建一个maven project工程。
将提供者的pom文件直接拷贝过来就可以直接使用的。因为是war包，自己在webapp下面创建WEB-INF文件夹，然后在WEB-INF下面创建web.xml即可。
代码语言：javascript复制 1 <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">
2 <modelVersion>4.0.0</modelVersion>
3 <groupId>com.bie</groupId>
4 <artifactId>dubbo-consumer</artifactId>
5 <version>0.0.1-SNAPSHOT</version>
6 <packaging>war</packaging>
7
8 <!-- 为了可以引用dubbo-service项目包，需要将dubbo-service的项目坐标加进来 -->
9 <dependencies>
10 <dependency>
11 <groupId>com.bie</groupId>
12 <artifactId>dubbo-service</artifactId>
13 <version>0.0.1-SNAPSHOT</version>
14 </dependency>
15 <!-- https://mvnrepository.com/artifact/com.alibaba/dubbo -->
16 <!-- dubbo -->
17 <dependency>
18 <groupId>com.alibaba</groupId>
19 <artifactId>dubbo</artifactId>
20 <version>2.5.3</version>
21 <!-- 排除dubbot2.5.3版本的spring2.5.6版本 -->
22 <exclusions>
23 <exclusion>
24 <groupId>org.springframework</groupId>
25 <artifactId>spring</artifactId>
26 </exclusion>
27 </exclusions>
28 </dependency>
29 <!-- spring -->
30 <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
31 <dependency>
32 <groupId>org.springframework</groupId>
33 <artifactId>spring-webmvc</artifactId>
34 <version>4.1.6.RELEASE</version>
35 </dependency>
36 <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
37 <dependency>
38 <groupId>org.springframework</groupId>
39 <artifactId>spring-context</artifactId>
40 <version>4.1.6.RELEASE</version>
41 </dependency>
42 <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
43 <dependency>
44 <groupId>org.springframework</groupId>
45 <artifactId>spring-core</artifactId>
46 <version>4.1.6.RELEASE</version>
47 </dependency>
48 <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
49 <dependency>
50 <groupId>org.springframework</groupId>
51 <artifactId>spring-web</artifactId>
52 <version>4.1.6.RELEASE</version>
53 </dependency>
54 <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
55 <dependency>
56 <groupId>org.springframework</groupId>
57 <artifactId>spring-beans</artifactId>
58 <version>4.1.6.RELEASE</version>
59 </dependency>
60 <!-- https://mvnrepository.com/artifact/org.springframework/spring-aop -->
61 <dependency>
62 <groupId>org.springframework</groupId>
63 <artifactId>spring-aop</artifactId>
64 <version>4.1.6.RELEASE</version>
65 </dependency>
66 <!-- <dependency>
67 <groupId>org.apache.zookeeper</groupId>
68 <artifactId>zookeeper</artifactId>
69 <version>3.4.7</version>
70 </dependency>
71 <dependency>
72 <groupId>com.github.sgroschupf</groupId>
73 <artifactId>zkclient</artifactId>
74 <version>0.1</version>
75 </dependency> -->
76 <!-- https://mvnrepository.com/artifact/com.101tec/zkclient -->
77 <!-- 访问zookeeper客户端jar包 -->
78 <dependency>
79 <groupId>com.101tec</groupId>
80 <artifactId>zkclient</artifactId>
81 <version>0.10</version>
82 </dependency>
83
84 </dependencies>
85 </project>消费者的配置文件applicationContext-dubbo.xml如下所示：
代码语言：javascript复制 1 <?xml version="1.0" encoding="UTF-8"?>
2 <beans xmlns="http://www.springframework.org/schema/beans"
3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 xmlns:context="http://www.springframework.org/schema/context"
5 xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
6 xsi:schemaLocation="http://www.springframework.org/schema/beans
7 http://www.springframework.org/schema/beans/spring-beans.xsd
8 http://www.springframework.org/schema/context
9 http://www.springframework.org/schema/context/spring-context.xsd
10 http://code.alibabatech.com/schema/dubbo
11 http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
12
13 <!-- 配置注解驱动 -->
14 <dubbo:annotation package="com.bie.consumer.service.impl" />
15
16 <!-- 1、首先给当前的provider起一个名称,方便监控中心进行监控 -->
17 <dubbo:application name="dubbo-consumer" />
18 <!-- 2、配置注册中心,protocol="dubbo"代表了是dubbo协议，地址是192.168.110.140:2181 -->
19 <dubbo:registry protocol="zookeeper"
20 address="192.168.110.140:2181"></dubbo:registry>
21
22 <!-- 3、将bean注入到容器中 -->
23 <bean id="dubboConsumerService" class="com.bie.consumer.service.impl.DubboConsumerServiceImpl"></bean>
24
25 </beans> 这个相当于调用服务层的，所以这个项目相当于是service层的，所以业务代码如下所示：
测试代码和测试效果如下所示：
注意：记得启动你的zookeeper哦。
待续......
