java普通項目怎麼使用dubbo rpc接口

首先要依賴dubbo和spring

<!-- start of spring -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
            <scope>provided</scope>
            <exclusions>
                <exclusion>
                    <artifactId>spring-aop</artifactId>
                    <groupId>org.springframework</groupId>
                </exclusion>
                <exclusion>
                    <artifactId>spring-expression</artifactId>
                    <groupId>org.springframework</groupId>
                </exclusion>
            </exclusions>
        </dependency>

在resources下創建一個xml

引用dubbo接口服務

<?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="myRpcService" interface="com.rpc.service.MyRpcService"/>

</beans>

創建一個ContextUtil類去加載xml，這個類是比較通用的

import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * @author chengzhenxing
 * @date 2019/4/17
 */
public class ContextUtil {

    private static String configLocation = "spring/consumer.xml";

    private static ContextUtil instance;

    private static AbstractApplicationContext context = new ClassPathXmlApplicationContext(configLocation);

    private ContextUtil() {
    }

    private static ContextUtil getInstance() {

        if (instance == null) {
            synchronized (ContextUtil.class) {
                if (instance == null) {
                    instance = new ContextUtil();
                }
            }
        }
        return instance;
    }


    public static <T> T getBean(String bean) {
        return getInstance().getBeanEx(bean);
    }

    @SuppressWarnings("unchecked")
    private <T> T getBeanEx(String bean) {
        return (T) context.getBean(bean);
    }

    public static void close() {
        if (context != null) {
            context.registerShutdownHook();
        }
    }
}

創建對象

 MyRpcServicemyRpcService= ContextUtil.getBean("myRpcService");