详解SpringMVC注解方式集成Dubbo

由于最近项目需要SpringMVC集成Dubbo，本文大概记录下详细集成过程：

一、首先项目中Maven引入Jar包

       <!-- dubbo相关 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>dubbo</artifactId>
        </dependency>

        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>${zookeeper.version}</version>
        </dependency>

二、web.xml配置context-param（生产者）

  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>
      classpath*:config/datasource.xml
      classpath*:spring/*.xml
    </param-value>
  </context-param>

三、 配置spring-dubbo-provider.xml配置文件

<?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">

    <!-- 提供方应用信息，用于计算依赖关系 -->
    <dubbo:application name="demo-provider"/>

    <!-- 使用ZK注册中心暴露服务地址 -->
    <dubbo:registry address="zookeeper://127.0.0.1:2181"/>

    <!-- 用Dubbo协议在20880端口暴露服务 -->
    <dubbo:protocol name="dubbo" port="20880"/>

    <!-- 扫描注解包路径，多个包用逗号分隔 -->
    <dubbo:annotation package="com.ls"/>

</beans>

四、 class注册成生产者

@Transactional
@Service
public class UserServiceImpl implements IUserService {

}

五、web.xml配置servlet（消费者）

    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring/spring-mvc-dubbo.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

六、配置spring-mvc-dubbo.xml配置文件

<?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:context="http://www.springframework.org/schema/context"
       xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
	   http://www.springframework.org/schema/beans/spring-beans.xsd
	   http://www.springframework.org/schema/context
	   http://www.springframework.org/schema/context/spring-context.xsd
       http://code.alibabatech.com/schema/dubbo
       http://code.alibabatech.com/schema/dubbo/dubbo.xsd
       http://www.springframework.org/schema/mvc
	   http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!-- 提供方应用信息，用于计算依赖关系 -->
    <dubbo:application name="consumer"/>

    <!-- 使用ZK注册中心暴露服务地址 -->
    <dubbo:registry address="zookeeper://127.0.0.1:2181"/>

    <!-- 扫描注解包路径，多个包用逗号分隔 -->
    <dubbo:annotation package="com.ls"/>

    <!--   <dubbo:consumer check="false" timeout="3000" group ="*"/>-->

    <bean id="stringHttpMessageConverter" class="org.springframework.http.converter.StringHttpMessageConverter">
        <constructor-arg value="UTF-8"/>
        <property name="supportedMediaTypes">
            <list>
                <value>text/html;charset=utf-8</value>
                <value>application/xml;charset=utf-8</value>
                <value>application/json;charset=utf-8</value>
            </list>
        </property>
    </bean>

    <bean id="mappingJackson2HttpMessageConverter"
          class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
        <property name="prefixJson" value="false"/>
        <property name="supportedMediaTypes">
            <list>
                <value>text/html;charset=utf-8</value>
                <value>application/xml;charset=utf-8</value>
                <value>application/json;charset=utf-8</value>
            </list>
        </property>
        <property name="objectMapper" ref="objectMapper"></property>
    </bean>

    <bean id="objectMapper" class="com.fasterxml.jackson.databind.ObjectMapper">
        <property name="dateFormat">
            <bean class="java.text.SimpleDateFormat">
                <constructor-arg value="yyyy-MM-dd HH:mm:ss" />
            </bean>
        </property>
    </bean>

    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="maxUploadSize" value="50000000"/>
        <property name="maxUploadSizePerFile" value="5000000"/>
        <property name="defaultEncoding" value="utf-8"/>
    </bean>

    <mvc:annotation-driven >
        <mvc:message-converters>
            <ref bean="stringHttpMessageConverter"/>
            <ref bean="mappingJackson2HttpMessageConverter"/>
        </mvc:message-converters>
    </mvc:annotation-driven>


</beans>

七、 class中引入消费者

    @Reference
    private IUserService userService;

至此SpringMVC集成Dubbo注解配置方式以基本完成。