ADD file via upload

ServiceInfo.java

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+package mxdx1;
+
+import java.util.List;
+
+//服务信息模型
+public class ServiceInfo {
+ private String serviceName; // 服务名称
+ private String host;       // 主机地址
+ private int port;          // 端口号
+
+ // 构造方法、getter和setter
+ public ServiceInfo(String serviceName, String host, int port) {
+     this.serviceName = serviceName;
+     this.host = host;
+     this.port = port;
+ }
+
+ public String getHost() {
+	return host;
+ }
+
+ public int getPort() {
+	return port;
+ }
+
+ public String getServiceName() {
+	return serviceName;
+ }
+ 
+ // getter和setter省略...
+}
+
+//服务观察者接口（观察者模式）
+public interface ServiceObserver {
+ void onServiceChanged(String serviceName, List<ServiceInfo> serviceInfos);
+}