读 IP/etc/hostip

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>dubbo</artifactId>
    <version>2.5.10</version>
</dependency>
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>dubbo-core</artifactId>
    <version>1.0-SNAPSHOT</version>
</dependency>