分布式服务框架 dubbo/dubbox 入门示例(转)

dubbo是一个分布式的服务架构，可直接用于生产环境作为SOA服务框架。

官网首页：http://dubbo.io/ ，官方用户指南 http://dubbo.io/User+Guide-zh.htm上面的几张图画得不错，完全可以当做SOA架构的学习资料

淘宝将这个项目开源出来以后，得到了不少同行的支持，包括：

当当网的扩展版本dubbox ：https://github.com/dangdangdotcom/dubbox

京东的扩展版本jd-hydra: http://www.oschina.net/p/jd-hydra

不过，略有遗憾的是，据说在淘宝内部，dubbo由于跟淘宝另一个类似的框架HSF（非开源）有竞争关系，导致dubbo团队已经解散（参见http://www.oschina.net/news/55059/druid-1-0-9 中的评论），反到是当当网的扩展版本仍在持续发展，墙内开花墙外香。

不管如何，能在阿里、当当、京东这些大型网站正式使用的框架，总不至于差到哪里去。

本文下面的示例均基于当当的dubbox版本，由于dubbox并没向maven提交编译后的jar包，所以只能从github clone代码到本地编译得到jar包。

编译及测试步骤：(以下步骤全在windows环境中完成)

1. 本机先安装github on Windows的客户端，将在path路径中，把git.exe加进去

2. 命令行下 git clone https://github.com/dangdangdotcom/dubbox 把代码拉到本地

3. mvn install -Dmaven.test.skip=true 跳过测试编译

4. 在本机安装一个zookeeper，参考zoo.cfg如下：

tickTime=2000
initLimit=10
syncLimit=5
dataDir=D:/java/zookeeper-3.4.6/data
dataLogDir=D:/java/zookeeper-3.4.6/log
clientPort=2181
server.1=localhost:2287:3387

然后输入 bin/zkServer.cmd 启用zookeeper

5. intellij Idea中导入源码

6. 运行 \dubbox\dubbo-demo\dubbo-demo-provider\src\test\java\com\alibaba\dubbo\demo\provider\DemoProvider.java

把服务提供方跑起来，成功后，可以在ZK里，用 ls / 看下，会发现zk里多出了一个dubbo的节点，所有服务全注册在这里了

7. 运行\dubbox\dubbo-demo\dubbo-demo-consumer\src\test\java\com\alibaba\dubbo\demo\consumer\DemoConsumer.java

服务消费方调用测试，可以看console里的输出

8. 运行\dubbox\dubbo-demo\dubbo-demo-consumer\src\test\java\com\alibaba\dubbo\demo\consumer\RestClient.java

跑一下rest调用

9. 浏览器访问 http://localhost:8888/services/users/100.xml 或 http://localhost:8888/services/users/100.json

dubbox官方的示例，虽然已经很简单了，但是对于初次接触的人来讲，仍然略显复杂，下面的代码在其基础上简化了一下：

一、先定义服务接口及传输对象DTO

项目结构如下

代码：

User.java

                                package yjmyzz.dubbo.demo.api;
                            
                                import org.codehaus.jackson.annotate.JsonProperty;
                            
                                import javax.validation.constraints.Min;
                            
                                import javax.validation.constraints.NotNull;
                            
                                import javax.validation.constraints.Size;
                            
                                import javax.xml.bind.annotation.XmlAccessType;
                            
                                import javax.xml.bind.annotation.XmlAccessorType;
                            
                                import javax.xml.bind.annotation.XmlElement;
                            
                                import javax.xml.bind.annotation.XmlRootElement;
                            
                                import java.io.Serializable;
                            
                                @XmlRootElement
                            
                                @XmlAccessorType(XmlAccessType.FIELD)
                            
                                public class User implements Serializable {
                            
                                @NotNull
                            
                                @Min(1L)
                            
                                private Long id;
                            
                                @JsonProperty("username")
                            
                                @XmlElement(name = "username")
                            
                                @NotNull
                            
                                @Size(min = 6, max = 50)
                            
                                private String name;
                            
                                public User() {
                            
                                }
                            
                                public User(Long id, String name) {
                            
                                this.id = id;
                            
                                this.name = name;
                            
                                }
                            
                                public Long getId() {
                            
                                return id;
                            
                                }
                            
                                public void setId(Long id) {
                            
                                this.id = id;
                            
                                }
                            
                                public String getName() {
                            
                                return name;
                            
                                }
                            
                                public void setName(String name) {
                            
                                this.name = name;
                            
                                }
                            
                                @Override
                            
                                public String toString() {
                            
                                return "User (" +
                            
                                "id=" + id +
                            
                                ", name='" + name + '\'' +
                            
                                ')';
                            
                                }
                            
                                }

UserService.java

                                package yjmyzz.dubbo.demo.api;
                            
                                public interface UserService {
                            
                                User getUser(Long id);
                            
                                }

UserRestService.java

                                package yjmyzz.dubbo.demo.api;
                            
                                import javax.validation.constraints.Min;
                            
                                public interface UserRestService {
                            
                                User getUser(@Min(value = 1L, message = "User ID must be greater than 1") Long id);
                            
                                }

pom.xml

 1 <?xml version="1.0" encoding="UTF-8"?>2 <project xmlns="http://maven.apache.org/POM/4.0.0"3          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"4          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">5 6     <modelVersion>4.0.0</modelVersion>7 8     <groupId>com.cnblogs.yjmyzz</groupId>9     <artifactId>dubbo-hello-api</artifactId>
10     <version>0.1</version>
11
12     <dependencies>
13
14         <dependency>
15             <groupId>com.alibaba</groupId>
16             <artifactId>dubbo</artifactId>
17             <version>2.8.4</version>
18         </dependency>
19
20         <dependency>
21             <groupId>javax.validation</groupId>
22             <artifactId>validation-api</artifactId>
23             <version>1.0.0.GA</version>
24         </dependency>
25
26         <dependency>
27             <groupId>javax.annotation</groupId>
28             <artifactId>javax.annotation-api</artifactId>
29             <version>1.2</version>
30         </dependency>
31
32         <dependency>
33             <groupId>org.codehaus.jackson</groupId>
34             <artifactId>jackson-mapper-asl</artifactId>
35             <version>1.9.12</version>
36         </dependency>
37
38     </dependencies>
39 </project>

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二、定义服务生产者（即：服务接口的实现方）

UserServiceImpl.java

                                package yjmyzz.dubbo.demo.provider;
                            
                                import yjmyzz.dubbo.demo.api.User;
                            
                                import yjmyzz.dubbo.demo.api.UserService;
                            
                                public class UserServiceImpl implements UserService {
                            
                                public User getUser(Long id) {
                            
                                return new User(id, "username" + id);
                            
                                }
                            
                                }

UserRestServiceImpl.java

                                package yjmyzz.dubbo.demo.provider;
                            
                                import com.alibaba.dubbo.rpc.RpcContext;
                            
                                import com.alibaba.dubbo.rpc.protocol.rest.support.ContentType;
                            
                                import yjmyzz.dubbo.demo.api.User;
                            
                                import yjmyzz.dubbo.demo.api.UserRestService;
                            
                                import yjmyzz.dubbo.demo.api.UserService;
                            
                                import javax.servlet.http.HttpServletRequest;
                            
                                import javax.servlet.http.HttpServletResponse;
                            
                                import javax.ws.rs.*;
                            
                                import javax.ws.rs.core.MediaType;
                            
                                @Path("users")
                            
                                @Consumes({MediaType.APPLICATION_JSON, MediaType.TEXT_XML})
                            
                                @Produces({ContentType.APPLICATION_JSON_UTF_8, ContentType.TEXT_XML_UTF_8})
                            
                                public class UserRestServiceImpl implements UserRestService {
                            
                                private UserService userService;
                            
                                public void setUserService(UserService userService) {
                            
                                this.userService = userService;
                            
                                }
                            
                                @GET
                            
                                @Path("{id : \\d+}")
                            
                                public User getUser(@PathParam("id") Long id) {
                            
                                if (RpcContext.getContext().getRequest(HttpServletRequest.class) != null) {
                            
                                System.out.println("Client IP address from RpcContext: " + RpcContext.getContext().getRequest(HttpServletRequest.class).getRemoteAddr());
                            
                                }
                            
                                if (RpcContext.getContext().getResponse(HttpServletResponse.class) != null) {
                            
                                System.out.println("Response object from RpcContext: " + RpcContext.getContext().getResponse(HttpServletResponse.class));
                            
                                }
                            
                                return userService.getUser(id);
                            
                                }
                            
                                }

DemoProvider.java

                                package yjmyzz.dubbo.demo.provider;
                            
                                import org.springframework.context.support.ClassPathXmlApplicationContext;
                            
                                import java.io.IOException;
                            
                                public class DemoProvider {
                            
                                public static void main(String[] args) throws IOException {
                            
                                ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("classpath*:META-INF/spring/*.xml");
                            
                                context.start();
                            
                                System.out.println("服务已经启动...");
                            
                                System.in.read();
                            
                                }
                            
                                }

配置文件：resources\META-INF\spring\dubbo-demo-provider.xml

 1 <?xml version="1.0" encoding="UTF-8"?>2 3 <beans xmlns="http://www.springframework.org/schema/beans"4        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"5        xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"6        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd7     http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">8 9     <dubbo:application name="demo-provider" owner="programmer" organization="dubbox"/>
10
11     <dubbo:registry address="zookeeper://127.0.0.1:2181"/>
12
13     <dubbo:protocol name="dubbo" serialization="kryo" optimizer="yjmyzz.dubbo.demo.api.SerializationOptimizerImpl"/>
14
15     <!-- use tomcat server -->
16     <dubbo:protocol name="rest" port="8888" threads="500" contextpath="services" server="tomcat" accepts="500"
17                     extension="com.alibaba.dubbo.rpc.protocol.rest.support.LoggingFilter"/>
18
19
20     <dubbo:service interface="yjmyzz.dubbo.demo.api.UserService" ref="userService" protocol="dubbo" />
21
22     <dubbo:service interface="yjmyzz.dubbo.demo.api.UserRestService" ref="userRestService" protocol="rest"  validation="true"/>
23
24     <bean id="userService" class="yjmyzz.dubbo.demo.provider.UserServiceImpl"/>
25
26     <bean id="userRestService" class="yjmyzz.dubbo.demo.provider.UserRestServiceImpl">
27         <property name="userService" ref="userService"/>
28     </bean>
29
30
31 </beans>

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pom.xml

  1 <?xml version="1.0" encoding="UTF-8"?>2 <project xmlns="http://maven.apache.org/POM/4.0.0"3          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"4          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">5 6     <modelVersion>4.0.0</modelVersion>7 8     <groupId>com.cnblogs.yjmyzz</groupId>9     <artifactId>dubbo-hello-provider</artifactId>10     <version>0.1</version>11 12     <dependencies>13 14         <!--公用的服务接口-->15         <dependency>16             <groupId>com.cnblogs.yjmyzz</groupId>17             <artifactId>dubbo-hello-api</artifactId>18             <version>0.1</version>19         </dependency>20 21         <dependency>22             <groupId>com.alibaba</groupId>23             <artifactId>dubbo</artifactId>24             <version>2.8.4</version>25         </dependency>26 27         <dependency>28             <groupId>org.javassist</groupId>29             <artifactId>javassist</artifactId>30             <version>3.15.0-GA</version>31         </dependency>32 33         <dependency>34             <groupId>org.apache.mina</groupId>35             <artifactId>mina-core</artifactId>36             <version>1.1.7</version>37         </dependency>38 39         <dependency>40             <groupId>org.glassfish.grizzly</groupId>41             <artifactId>grizzly-core</artifactId>42             <version>2.1.4</version>43         </dependency>44 45         <dependency>46             <groupId>org.apache.httpcomponents</groupId>47             <artifactId>httpclient</artifactId>48             <version>4.2.1</version>49         </dependency>50 51         <dependency>52             <groupId>com.alibaba</groupId>53             <artifactId>fastjson</artifactId>54             <version>1.1.39</version>55         </dependency>56 57         <dependency>58             <groupId>com.thoughtworks.xstream</groupId>59             <artifactId>xstream</artifactId>60             <version>1.4.1</version>61         </dependency>62 63         <dependency>64             <groupId>org.apache.bsf</groupId>65             <artifactId>bsf-api</artifactId>66             <version>3.1</version>67         </dependency>68 69         <dependency>70             <groupId>org.apache.zookeeper</groupId>71             <artifactId>zookeeper</artifactId>72             <version>3.4.6</version>73         </dependency>74 75         <dependency>76             <groupId>com.github.sgroschupf</groupId>77             <artifactId>zkclient</artifactId>78             <version>0.1</version>79         </dependency>80 81         <dependency>82             <groupId>org.apache.curator</groupId>83             <artifactId>curator-framework</artifactId>84             <version>2.5.0</version>85         </dependency>86 87         <dependency>88             <groupId>com.googlecode.xmemcached</groupId>89             <artifactId>xmemcached</artifactId>90             <version>1.3.6</version>91         </dependency>92 93         <dependency>94             <groupId>org.apache.cxf</groupId>95             <artifactId>cxf-rt-frontend-simple</artifactId>96             <version>2.6.1</version>97         </dependency>98 99         <dependency>
100             <groupId>org.apache.cxf</groupId>
101             <artifactId>cxf-rt-transports-http</artifactId>
102             <version>2.6.1</version>
103         </dependency>
104
105         <dependency>
106             <groupId>org.apache.thrift</groupId>
107             <artifactId>libthrift</artifactId>
108             <version>0.8.0</version>
109         </dependency>
110
111         <dependency>
112             <groupId>com.caucho</groupId>
113             <artifactId>hessian</artifactId>
114             <version>4.0.7</version>
115         </dependency>
116
117         <dependency>
118             <groupId>javax.servlet</groupId>
119             <artifactId>javax.servlet-api</artifactId>
120             <version>3.1.0</version>
121         </dependency>
122
123         <dependency>
124             <groupId>org.mortbay.jetty</groupId>
125             <artifactId>jetty</artifactId>
126             <version>6.1.26</version>
127             <exclusions>
128                 <exclusion>
129                     <groupId>org.mortbay.jetty</groupId>
130                     <artifactId>servlet-api</artifactId>
131                 </exclusion>
132             </exclusions>
133         </dependency>
134
135         <dependency>
136             <groupId>log4j</groupId>
137             <artifactId>log4j</artifactId>
138             <version>1.2.16</version>
139         </dependency>
140
141         <dependency>
142             <groupId>org.slf4j</groupId>
143             <artifactId>slf4j-api</artifactId>
144             <version>1.6.2</version>
145         </dependency>
146
147         <dependency>
148             <groupId>redis.clients</groupId>
149             <artifactId>jedis</artifactId>
150             <version>2.1.0</version>
151         </dependency>
152
153         <dependency>
154             <groupId>javax.validation</groupId>
155             <artifactId>validation-api</artifactId>
156             <version>1.0.0.GA</version>
157         </dependency>
158
159         <dependency>
160             <groupId>org.hibernate</groupId>
161             <artifactId>hibernate-validator</artifactId>
162             <version>4.2.0.Final</version>
163         </dependency>
164
165         <dependency>
166             <groupId>javax.cache</groupId>
167             <artifactId>cache-api</artifactId>
168             <version>0.4</version>
169         </dependency>
170
171         <dependency>
172             <groupId>org.jboss.resteasy</groupId>
173             <artifactId>resteasy-jaxrs</artifactId>
174             <version>3.0.7.Final</version>
175         </dependency>
176
177         <dependency>
178             <groupId>org.jboss.resteasy</groupId>
179             <artifactId>resteasy-client</artifactId>
180             <version>3.0.7.Final</version>
181         </dependency>
182
183         <dependency>
184             <groupId>org.jboss.resteasy</groupId>
185             <artifactId>resteasy-netty</artifactId>
186             <version>3.0.7.Final</version>
187         </dependency>
188
189         <dependency>
190             <groupId>org.jboss.resteasy</groupId>
191             <artifactId>resteasy-jdk-http</artifactId>
192             <version>3.0.7.Final</version>
193         </dependency>
194
195         <dependency>
196             <groupId>org.jboss.resteasy</groupId>
197             <artifactId>resteasy-jackson-provider</artifactId>
198             <version>3.0.7.Final</version>
199         </dependency>
200
201         <dependency>
202             <groupId>org.jboss.resteasy</groupId>
203             <artifactId>resteasy-jaxb-provider</artifactId>
204             <version>3.0.7.Final</version>
205         </dependency>
206
207         <dependency>
208             <groupId>org.apache.tomcat.embed</groupId>
209             <artifactId>tomcat-embed-core</artifactId>
210             <version>8.0.11</version>
211         </dependency>
212
213         <dependency>
214             <groupId>org.apache.tomcat.embed</groupId>
215             <artifactId>tomcat-embed-logging-juli</artifactId>
216             <version>8.0.11</version>
217         </dependency>
218
219         <dependency>
220             <groupId>com.esotericsoftware.kryo</groupId>
221             <artifactId>kryo</artifactId>
222             <version>2.24.0</version>
223         </dependency>
224
225         <dependency>
226             <groupId>de.javakaffee</groupId>
227             <artifactId>kryo-serializers</artifactId>
228             <version>0.26</version>
229         </dependency>
230
231         <dependency>
232             <groupId>de.ruedigermoeller</groupId>
233             <artifactId>fst</artifactId>
234             <version>1.55</version>
235         </dependency>
236
237     </dependencies>
238
239
240 </project>

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测试时，运行DemoProvider中的main方法即可启动服务，所有服务注册在ZooKeeper，层次结构类似下面这样：

/dubbo/dubbo/yjmyzz.dubbo.demo.api.UserRestService/dubbo/yjmyzz.dubbo.demo.api.UserRestService/providers/dubbo/yjmyzz.dubbo.demo.api.UserRestService/configurators/dubbo/yjmyzz.dubbo.demo.api.UserService/dubbo/yjmyzz.dubbo.demo.api.UserService/providers/dubbo/yjmyzz.dubbo.demo.api.UserService/configurators

三、服务消费方

DemoConsumer.java

                                package yjmyzz.dubbo.demo.consumer;
                            
                                import org.springframework.context.support.ClassPathXmlApplicationContext;
                            
                                import yjmyzz.dubbo.demo.api.UserService;
                            
                                import javax.ws.rs.client.Client;
                            
                                import javax.ws.rs.client.ClientBuilder;
                            
                                import javax.ws.rs.client.WebTarget;
                            
                                import javax.ws.rs.core.Response;
                            
                                public class DemoConsumer {
                            
                                public static void main(String[] args) {
                            
                                final String port = "8888";
                            
                                //测试Rest服务
                            
                                getUser("http://localhost:" + port + "/services/users/1.json");
                            
                                getUser("http://localhost:" + port + "/services/users/1.xml");
                            
                                //测试常规服务
                            
                                ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("classpath*:META-INF/spring/*.xml");
                            
                                context.start();
                            
                                UserService userService = context.getBean(UserService.class);
                            
                                System.out.println(userService.getUser(1L));
                            
                                }
                            
                                private static void getUser(String url) {
                            
                                System.out.println("Getting user via " + url);
                            
                                Client client = ClientBuilder.newClient();
                            
                                WebTarget target = client.target(url);
                            
                                Response response = target.request().get();
                            
                                try {
                            
                                if (response.getStatus() != 200) {
                            
                                throw new RuntimeException("Failed with HTTP error code : " + response.getStatus());
                            
                                }
                            
                                System.out.println("Successfully got result: " + response.readEntity(String.class));
                            
                                } finally {
                            
                                response.close();
                            
                                client.close();
                            
                                }
                            
                                }
                            
                                }

配置文件：resources\META-INF\spring\dubbo-hello-consumer.xml

 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:dubbo="http://code.alibabatech.com/schema/dubbo"5        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd6     http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">7 8     <dubbo:application name="demo-consumer" owner="programmer" organization="dubbox"/>9
10     <dubbo:registry address="zookeeper://127.0.0.1:2181"/>
11
12     <dubbo:reference id="userRestService" interface="yjmyzz.dubbo.demo.api.UserRestService"/>
13
14     <dubbo:reference id="userService" interface="yjmyzz.dubbo.demo.api.UserService"/>
15
16 </beans>

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pom.xml

  1 <?xml version="1.0" encoding="UTF-8"?>2 <project xmlns="http://maven.apache.org/POM/4.0.0"3          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"4          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">5 6     <modelVersion>4.0.0</modelVersion>7 8     <groupId>com.cnblogs.yjmyzz</groupId>9     <artifactId>dubbo-hello-consumer</artifactId>10     <version>0.1</version>11 12 13     <dependencies>14         <!--公用的服务接口-->15         <dependency>16             <groupId>com.cnblogs.yjmyzz</groupId>17             <artifactId>dubbo-hello-api</artifactId>18             <version>0.1</version>19         </dependency>20 21 22         <dependency>23             <groupId>com.alibaba</groupId>24             <artifactId>dubbo</artifactId>25             <version>2.8.4</version>26         </dependency>27 28         <dependency>29             <groupId>org.javassist</groupId>30             <artifactId>javassist</artifactId>31             <version>3.15.0-GA</version>32         </dependency>33 34         <dependency>35             <groupId>org.apache.mina</groupId>36             <artifactId>mina-core</artifactId>37             <version>1.1.7</version>38         </dependency>39 40         <dependency>41             <groupId>org.glassfish.grizzly</groupId>42             <artifactId>grizzly-core</artifactId>43             <version>2.1.4</version>44         </dependency>45 46         <dependency>47             <groupId>org.apache.httpcomponents</groupId>48             <artifactId>httpclient</artifactId>49             <version>4.2.1</version>50         </dependency>51 52         <dependency>53             <groupId>com.alibaba</groupId>54             <artifactId>fastjson</artifactId>55             <version>1.1.39</version>56         </dependency>57 58         <dependency>59             <groupId>com.thoughtworks.xstream</groupId>60             <artifactId>xstream</artifactId>61             <version>1.4.1</version>62         </dependency>63 64         <dependency>65             <groupId>org.apache.bsf</groupId>66             <artifactId>bsf-api</artifactId>67             <version>3.1</version>68         </dependency>69 70         <dependency>71             <groupId>org.apache.zookeeper</groupId>72             <artifactId>zookeeper</artifactId>73             <version>3.4.6</version>74         </dependency>75 76         <dependency>77             <groupId>com.github.sgroschupf</groupId>78             <artifactId>zkclient</artifactId>79             <version>0.1</version>80         </dependency>81 82         <dependency>83             <groupId>org.apache.curator</groupId>84             <artifactId>curator-framework</artifactId>85             <version>2.5.0</version>86         </dependency>87 88         <dependency>89             <groupId>com.googlecode.xmemcached</groupId>90             <artifactId>xmemcached</artifactId>91             <version>1.3.6</version>92         </dependency>93 94         <dependency>95             <groupId>org.apache.cxf</groupId>96             <artifactId>cxf-rt-frontend-simple</artifactId>97             <version>2.6.1</version>98         </dependency>99
100         <dependency>
101             <groupId>org.apache.cxf</groupId>
102             <artifactId>cxf-rt-transports-http</artifactId>
103             <version>2.6.1</version>
104         </dependency>
105
106         <dependency>
107             <groupId>org.apache.thrift</groupId>
108             <artifactId>libthrift</artifactId>
109             <version>0.8.0</version>
110         </dependency>
111
112         <dependency>
113             <groupId>com.caucho</groupId>
114             <artifactId>hessian</artifactId>
115             <version>4.0.7</version>
116         </dependency>
117
118         <dependency>
119             <groupId>javax.servlet</groupId>
120             <artifactId>javax.servlet-api</artifactId>
121             <version>3.1.0</version>
122         </dependency>
123
124         <dependency>
125             <groupId>org.mortbay.jetty</groupId>
126             <artifactId>jetty</artifactId>
127             <version>6.1.26</version>
128             <exclusions>
129                 <exclusion>
130                     <groupId>org.mortbay.jetty</groupId>
131                     <artifactId>servlet-api</artifactId>
132                 </exclusion>
133             </exclusions>
134         </dependency>
135
136         <dependency>
137             <groupId>log4j</groupId>
138             <artifactId>log4j</artifactId>
139             <version>1.2.16</version>
140         </dependency>
141
142         <dependency>
143             <groupId>org.slf4j</groupId>
144             <artifactId>slf4j-api</artifactId>
145             <version>1.6.2</version>
146         </dependency>
147
148         <dependency>
149             <groupId>redis.clients</groupId>
150             <artifactId>jedis</artifactId>
151             <version>2.1.0</version>
152         </dependency>
153
154         <dependency>
155             <groupId>javax.validation</groupId>
156             <artifactId>validation-api</artifactId>
157             <version>1.0.0.GA</version>
158         </dependency>
159
160         <dependency>
161             <groupId>org.hibernate</groupId>
162             <artifactId>hibernate-validator</artifactId>
163             <version>4.2.0.Final</version>
164         </dependency>
165
166         <dependency>
167             <groupId>javax.cache</groupId>
168             <artifactId>cache-api</artifactId>
169             <version>0.4</version>
170         </dependency>
171
172         <dependency>
173             <groupId>org.jboss.resteasy</groupId>
174             <artifactId>resteasy-jaxrs</artifactId>
175             <version>3.0.7.Final</version>
176         </dependency>
177
178         <dependency>
179             <groupId>org.jboss.resteasy</groupId>
180             <artifactId>resteasy-client</artifactId>
181             <version>3.0.7.Final</version>
182         </dependency>
183
184         <dependency>
185             <groupId>org.jboss.resteasy</groupId>
186             <artifactId>resteasy-netty</artifactId>
187             <version>3.0.7.Final</version>
188         </dependency>
189
190         <dependency>
191             <groupId>org.jboss.resteasy</groupId>
192             <artifactId>resteasy-jdk-http</artifactId>
193             <version>3.0.7.Final</version>
194         </dependency>
195
196         <dependency>
197             <groupId>org.jboss.resteasy</groupId>
198             <artifactId>resteasy-jackson-provider</artifactId>
199             <version>3.0.7.Final</version>
200         </dependency>
201
202         <dependency>
203             <groupId>org.jboss.resteasy</groupId>
204             <artifactId>resteasy-jaxb-provider</artifactId>
205             <version>3.0.7.Final</version>
206         </dependency>
207
208         <dependency>
209             <groupId>org.apache.tomcat.embed</groupId>
210             <artifactId>tomcat-embed-core</artifactId>
211             <version>8.0.11</version>
212         </dependency>
213
214         <dependency>
215             <groupId>org.apache.tomcat.embed</groupId>
216             <artifactId>tomcat-embed-logging-juli</artifactId>
217             <version>8.0.11</version>
218         </dependency>
219
220         <dependency>
221             <groupId>com.esotericsoftware.kryo</groupId>
222             <artifactId>kryo</artifactId>
223             <version>2.24.0</version>
224         </dependency>
225
226         <dependency>
227             <groupId>de.javakaffee</groupId>
228             <artifactId>kryo-serializers</artifactId>
229             <version>0.26</version>
230         </dependency>
231
232         <dependency>
233             <groupId>de.ruedigermoeller</groupId>
234             <artifactId>fst</artifactId>
235             <version>1.55</version>
236         </dependency>
237     </dependencies>
238
239
240 </project>

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其它注意事项：

dubbo构架中，zk充着“服务注册中心”的角色，所以生产者与消费者的xml配置文件中，都要配置zk地址，如果zk采用集群部署时，配置写法参考下面这样：

<dubbo:registry address="zookeeper://172.28.*.102:2181?backup=172.28.*.102:2182,172.28.*.102:2183"/>

dubbo还有一个管理界面，用于服务治理，包括启用/禁用服务，设置服务的路由规则（即：A地址的Consumer直接调用B机器的Provider，而不是由负载均衡算法分配）等等。

使用方法：将dubbo-admin这个项目编译成war包后，部署到jetty或其它兼容web server即可（当然要修改\WEB-INF\dubbo.properties里zk的地址）

部署完成后，访问管理界面时，默认用户名，密码均是root。

另外dubbo-monitor项目用于性能监控，结合监控产生的数据，再套上一些图表展示的框架，可以用图表方式直观展示各种指标。

2016-02-25：dubbox依赖的spring虽然升级成3.x了，但版本还是有点低，spring都已经4.x了，为了方便我fork了一份，升级成spring 4.x 同时增加了log4j2的日志组件支持，详情见：dubbox升级spring到4.x及添加log4j2支持

参考文章：

http://shiyanjun.cn/archives/341.html

http://blog.csdn.net/wilsonke/article/details/39896595

http://www.dataguru.cn/thread-464197-1-1.html

http://www.iteye.com/magazines/103

http://dangdangdotcom.github.io/dubbox/rest.html

http://dangdangdotcom.github.io/dubbox/demo.html

http://www.cnblogs.com/yjmyzz/p/dubbox-demo.html

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