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| 1 | +<div align="center"> |
| 2 | + <img src="https://i.ibb.co/250CB9Y/154358749351878.png" width="60%"/> |
| 3 | + <br/> |
| 4 | + |
| 5 | + [](https://travis-ci.org/coderqianlq/dubbo-spring-boot-cli) |
| 6 | + [](https://github.com/coderqianlq/spring-boot-dubbo-cli/blob/master/LICENSE) |
| 7 | +</div> |
| 8 | + |
| 9 | +**快速开始** |
| 10 | + |
| 11 | +通常情况,dubbo应用有两种使用场景,其一为服务提供方,另外一个是服务消费方。 |
| 12 | + |
| 13 | +这里选择更优的方式,在dubbo的服务层之上提供一个API网关,由API网关负责对dubbo服务的访问(可以考虑用泛化的方式去调用),这样所有的业务系统只要以Restful的方式调用API网关即可调用dubbo服务。 |
| 14 | + |
| 15 | +在dubbo-api中定义服务提供方为服务消费方暴露接口: |
| 16 | + |
| 17 | +```java |
| 18 | +public interface TestService { |
| 19 | + String test(String text); |
| 20 | +} |
| 21 | +``` |
| 22 | + |
| 23 | +**服务提供方** |
| 24 | + |
| 25 | +添加依赖: |
| 26 | + |
| 27 | +```xml |
| 28 | +<dependencies> |
| 29 | + <dependency> |
| 30 | + <groupId>com.alibaba.boot</groupId> |
| 31 | + <artifactId>dubbo-spring-boot-starter</artifactId> |
| 32 | + <version>0.2.0</version> |
| 33 | + </dependency> |
| 34 | + |
| 35 | + <dependency> |
| 36 | + <groupId>com.coderqian</groupId> |
| 37 | + <artifactId>dubbo-api</artifactId> |
| 38 | + <version>0.0.1-SNAPSHOT</version> |
| 39 | + </dependency> |
| 40 | +</dependencies> |
| 41 | +``` |
| 42 | + |
| 43 | +在application.properties添加dubbo的相关配置信息: |
| 44 | + |
| 45 | +```properties |
| 46 | +# 当前dubbo应用id |
| 47 | +dubbo.application.id=dubbo-provider |
| 48 | +# 当前dubbo应用名称 |
| 49 | +dubbo.application.name=dubbo-provider |
| 50 | +# 注册中心 |
| 51 | +dubbo.registry.address=zookeeper://127.0.0.1:2181 |
| 52 | +dubbo.server=true |
| 53 | +# 生产者暴露给消费者协议 |
| 54 | +dubbo.protocol.name=dubbo |
| 55 | +# 生产者暴露给消费者端口 |
| 56 | +dubbo.protocol.port=20880 |
| 57 | +``` |
| 58 | + |
| 59 | +注:这个配置只针对服务提供方,消费方不用指定协议,它自己会根据服务端的地址信息和@Reference注解去解析协议。 |
| 60 | + |
| 61 | +在Spring Boot Application的上添加`@EnableDubbo`,表示要开启dubbo功能。(dubbo provider服务可以使用或者不使用web容器) |
| 62 | + |
| 63 | +```java |
| 64 | +@EnableDubbo |
| 65 | +@SpringBootApplication |
| 66 | +public class DubboProviderApplication { |
| 67 | + |
| 68 | + public static void main(String[] args) { |
| 69 | + SpringApplication.run(DubboProviderApplication.class, args); |
| 70 | + } |
| 71 | +} |
| 72 | +``` |
| 73 | + |
| 74 | +实现TestService,对外提供服务。 |
| 75 | + |
| 76 | +```java |
| 77 | +@Service |
| 78 | +public class TestServiceImpl implements TestService { |
| 79 | + |
| 80 | + @Override |
| 81 | + public String test(String text) { |
| 82 | + return text; |
| 83 | + } |
| 84 | +} |
| 85 | +``` |
| 86 | + |
| 87 | +注:`@Service`是dubbo提供的注解`com.alibaba.dubbo.config.annotation.Service`。 |
| 88 | + |
| 89 | +**服务消费方** |
| 90 | + |
| 91 | +添加依赖: |
| 92 | + |
| 93 | +```xml |
| 94 | +<dependencies> |
| 95 | + <dependency> |
| 96 | + <groupId>com.alibaba.boot</groupId> |
| 97 | + <artifactId>dubbo-spring-boot-starter</artifactId> |
| 98 | + <version>0.2.0</version> |
| 99 | + </dependency> |
| 100 | + |
| 101 | + <dependency> |
| 102 | + <groupId>com.coderqian</groupId> |
| 103 | + <artifactId>dubbo-api</artifactId> |
| 104 | + <version>0.0.1-SNAPSHOT</version> |
| 105 | + </dependency> |
| 106 | +</dependencies> |
| 107 | +``` |
| 108 | + |
| 109 | +在application.properties添加dubbo的相关配置信息: |
| 110 | + |
| 111 | +```properties |
| 112 | +# 当前dubbo应用id |
| 113 | +dubbo.application.id=dubbo-customer |
| 114 | +# 当前dubbo应用名称 |
| 115 | +dubbo.application.name=dubbo-customer |
| 116 | +# 注册中心 |
| 117 | +dubbo.registry.address=zookeeper://127.0.0.1:2181 |
| 118 | + |
| 119 | +# 生产者提供的协议id |
| 120 | +dubbo.protocol.id=dubbo-provider |
| 121 | +# 生产者提供的协议名称 |
| 122 | +dubbo.protocol.name=dubbo |
| 123 | +# 生产者提供的协议端口号 |
| 124 | +dubbo.protocol.port=20880 |
| 125 | +``` |
| 126 | + |
| 127 | +通过`@Reference`注入需要使用的服务。 |
| 128 | + |
| 129 | +```java |
| 130 | +@RestController |
| 131 | +@RequestMapping("/customer") |
| 132 | +public class TestController { |
| 133 | + |
| 134 | + @Reference |
| 135 | + private TestService testService; |
| 136 | + |
| 137 | + @RequestMapping(value = "/hello", method = RequestMethod.GET) |
| 138 | + public String test(String text) { |
| 139 | + return testService.test(text); |
| 140 | + } |
| 141 | +} |
| 142 | +``` |
| 143 | + |
| 144 | +**参考文档** |
| 145 | + |
| 146 | +* dubbo: http://dubbo.io |
| 147 | +* spring-boot: http://projects.spring.io/spring-boot |
| 148 | +* dubbo-spring-boot-starter: https://github.com/alibaba/dubbo-spring-boot-starter |
| 149 | +* dubbo-spring-boot-project: https://github.com/dubbo/dubbo-spring-boot-project |
| 150 | + |
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