dubbox 在实际项目中的使用

dubbox的github地址： https://github.com/dangdangdotcom/dubbox
先下载下来，在pom.xml文件中修改jdk版本

mvn clean package install -Dmaven.test.skip=true
如果报错，查看缺少什么jar包，删除jar包，重新执行上面的命令
dubbox是需要zookeeper的，所以必须要先安装zk。
dubbox可以将服务既发布成dubbo，也可以发布成rest。
在build.gradle中配置，这里只是简单的配了一下

import org.gradle.plugins.ide.eclipse.model.Facetapply plugin:'war'apply plugin:'eclipse-wtp'sourceCompatibility=1.8targetCompatibility=1.8[compileJava,compileTestJava]*.options*.encoding='UTF-8'ext{springVersion='4.3.6.RELEASE'}repositories {maven {url "http://maven.aliyun.com/nexus/content/groups/public/"}maven { url "http://repo.maven.apache.org/maven2" }}dependencies {compile fileTree(dir:'src/main/webapp/WEB-INF/lib',include:'*.jar',exclude:'commons-httpclient-3.0.jar')compile 'org.apache.axis:axis:1.4'compile 'commons-discovery:commons-discovery:0.2'compile 'wsdl4j:wsdl4j:1.6.3'compile "org.springframework:spring-context:${springVersion}"compile "org.springframework:spring-web:${springVersion}"//dubbox需要的jarcompile('com.alibaba:dubbo:2.8.4')compile('com.github.sgroschupf:zkclient:0.1')compile("org.apache.zookeeper:zookeeper:3.4.9")compile('org.jboss.resteasy:resteasy-jaxrs:3.0.7.Final')compile('org.jboss.resteasy:resteasy-client:3.0.7.Final')   compile('javax.validation:validation-api:1.0.0.GA')testCompile 'junit:junit:4.12'}eclipse {wtp {facet {facet name: 'jst.web', type: Facet.FacetType.fixedfacet name: 'wst.jsdt.web', type: Facet.FacetType.fixedfacet name: 'jst.java', type: Facet.FacetType.fixedfacet name: 'jst.web', version: '3.0'facet name: 'jst.java', version: '1.8'facet name: 'wst.jsdt.web', version: '1.0'}}}

在src/main/resources下新建dubbo.properties文件（必须是dubbo命名的）

dubbo.application.logger=slf4jdubbo.application.name=maven-demo dubbo.application.owner=qinwei dubbo.registry.address=zookeeper://zk的ip:2181#这个端口号一定要与tomcat的端口号相同dubbo.protocol.rest.port=8080 #dubbo.protocol.rest.threads=2 #dubbo.protocol.rest.accepts=10#这个最好和你的工程名相同，如果比你的工程名短，直接启动报错.dubbo.protocol.rest.contextpath=dubbo-demo#如果是servlet，必须在web.xml中配置dispatchServlet dubbo.protocol.rest.server=servlet dubbo.protocol.dubbo.port=20880dubbo.reference.timeout=10000

dubbo.provider.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsdhttp://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd"><dubbo:service interface="com.dubbo.RestService" ref="restServiceImpl" protocol="rest" /></beans>

dubbo.consumer.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd    http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">   <dubbo:reference id="restService" interface="com.dubbo.RestService" check="false"/></beans>

web.xml

    <!--必须在spring的listener之前 -->    <listener>        <listener-class>com.alibaba.dubbo.remoting.http.servlet.BootstrapListener</listener-class>    </listener>    <!-- dubbo.properties中配的是servlet的话，必须要配置下面-->    <servlet>        <servlet-name>dispatcher</servlet-name>        <servlet-class>com.alibaba.dubbo.remoting.http.servlet.DispatcherServlet</servlet-class>        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>dispatcher</servlet-name>        <url-pattern>/*</url-pattern>    </servlet-mapping>

import javax.ws.rs.Consumes;import javax.ws.rs.POST;import javax.ws.rs.Path;import javax.ws.rs.Produces;import javax.ws.rs.core.MediaType;import com.alibaba.dubbo.rpc.protocol.rest.support.ContentType;@Path("/dubbox")@Consumes({ MediaType.APPLICATION_JSON, MediaType.TEXT_XML })@Produces({ ContentType.APPLICATION_JSON_UTF_8, ContentType.TEXT_XML_UTF_8 })public interface RestService {@POST@Path("/testRest")String testRest(String json);}}

import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.stereotype.Service;@Service("restServiceImpl")public class RestServiceImpl implements RestService {    private static final Logger LOGGER = LoggerFactory.getLogger(RestServiceImpl.class);    @Override    public String testRest(String json) {        LOGGER.debug(json);        return "{\"name\":\"qw\"}";    }}

调用dubbo服务直接引入对应的API的jar就可以了
调用rest服务需要暴露服务器的ip和端口号，调用地址是
http://IP:配置的dubbo.protocol.rest.port/dubbo.protocol.rest.contextpath/接口上的@path/方法上的@path
如果是非dubbo（比如用httpclient的方式）调用rest服务，必须要注意设置contentType，要和@Consumes指定的格式一样，否则是调不通的