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https://github.com/v5tech/dubbo-example
dubbo example
https://github.com/v5tech/dubbo-example
dubbo dubbo-example
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dubbo example
- Host: GitHub
- URL: https://github.com/v5tech/dubbo-example
- Owner: v5tech
- License: mit
- Created: 2015-08-05T16:07:30.000Z (over 9 years ago)
- Default Branch: master
- Last Pushed: 2016-05-02T04:50:15.000Z (over 8 years ago)
- Last Synced: 2024-10-04T12:53:20.851Z (4 months ago)
- Topics: dubbo, dubbo-example
- Language: Java
- Size: 16.8 MB
- Stars: 26
- Watchers: 3
- Forks: 21
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# dubbo-example
dubbo 分布式服务配置案例
升级到dubbox 2.8.4
dubbox 2.8.4编译安装
```
https://github.com/dangdangdotcom/dubbox/archive/dubbox-2.8.4.zip
修改根pom中curator_version版本为2.6.0
mvn install -Dmaven.test.skip=true
```
### 1. 项目结构介绍
dubbo-service 公共接口服务
dubbo-provider 公共接口服务实现(dubbo provider) 服务提供者
dubbo-consumer (dubbo consumer) dubbo服务消费者
### 2. 具体描述
* dubbo-service 为公共服务接口，在该模块中只声明对外提供的接口,在dubbo provider和 dubbo consumer均有引用
* dubbo-provider 公共接口服务实现,服务提供者.为dubbo consumer提供服务。
* 示例代码如下
```java
import net.aimeizi.dubbo.entity.User;
import net.aimeizi.dubbo.service.UserService;
import com.alibaba.dubbo.config.annotation.Service;
@Service
public class UserServiceImpl implements UserService {
@Override
public User save(User user) {
user.setUserId(++UserIdGenerator.id);
return user;
}
}
```
* dubbo provider 核心配置
```xml
```
注:``配置会扫描该包下的@Service(com.alibaba.dubbo.config.annotation.Service)注解. 这里的服务注入使用dubbo @Service注解
* maven依赖
```xml
net.aimeizi
dubbo-service
1.0-SNAPSHOT
org.springframework
spring-context
${spring.version}
com.alibaba
dubbo
2.8.4
spring
org.springframework
org.apache.zookeeper
zookeeper
3.4.6
com.sun.jmx
jmxri
com.sun.jdmk
jmxtools
javax.jms
jms
com.github.sgroschupf
zkclient
0.1
```
* dubbo-consumer 消费者.这里只依赖公共服务接口，不需要直接依赖dubbo provider
* 示例代码如下
```java
import com.alibaba.dubbo.config.annotation.Reference;
import net.aimeizi.dubbo.service.DemoService;
import net.aimeizi.dubbo.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import javax.annotation.Resource;
/**
*
* dubbo 消费者
*
* @Reference 注解需要在 dubbo consumer中做如下配置
*
*
*
*
*
*
* 若要使用@Autowired或@Resource注解需要显式声明bean
*
* 使用@Autowired或@Resource注解时需要使用dubbo:reference来声明
*
*
*
* 以上的配置均需要在spring mvc的DispatcherServlet配置中显式配置dubbo consumer的配置.如/WEB-INF/applicationContext-dubbo-consumer.xml 否则在Controller中服务报NullPointException
*
* mvc-dispatcher
* org.springframework.web.servlet.DispatcherServlet
*
* contextConfigLocation
* /WEB-INF/applicationContext*.xml,/WEB-INF/mvc-dispatcher-servlet.xml
*
* 1
*
*
*/
@Controller
public class HelloController {
@Reference
//@Autowired
//@Resource
private DemoService demoService;
@Reference
//@Autowired
//@Resource
private UserService userService;
@RequestMapping(value = "/test", method = RequestMethod.GET)
public String printWelcome(ModelMap model) {
model.addAttribute("message", "Hello world!");
return "hello";
}
}
```
注意:
① @Reference 注解需要在 dubbo consumer配置文件中做如下配置
```xml
```
② 若要使用@Autowired或@Resource注解需要显式声明bean
```xml
```
③ 以上的配置均需要在spring mvc的DispatcherServlet配置中显式配置dubbo consumer的配置.如/WEB-INF/applicationContext-dubbo-consumer.xml 否则在Controller中服务报NullPointException
```xml
mvc-dispatcher
org.springframework.web.servlet.DispatcherServlet
contextConfigLocation
/WEB-INF/applicationContext*.xml,/WEB-INF/mvc-dispatcher-servlet.xml
1
```
### 3. 演示
完整演示
错误演示Controller中服务报NullPointException
使用@Autowired或@Resource注解
dubbo管理控制台演示
# 与我联系
* QQ:*184675420*
* Email:*sxyx2008#gmail.com*(#替换为@)
* HomePage:*[aimeizi.net](http://aimeizi.net)*
* Weibo:*[http://weibo.com/qq184675420](http://weibo.com/qq184675420)*(荧星诉语)
* Twitter:*[https://twitter.com/sxyx2008](https://twitter.com/sxyx2008)*
# License
MIT
Copyright (c) 2015 雪山飞鹄