add connect

hutool-socket/src/main/java/cn/hutool/socket/SocketUtil.java

@@ -1,24 +1,26 @@
 package cn.hutool.socket;
 
+import cn.hutool.core.io.IORuntimeException;
+
 import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.net.Socket;
 import java.net.SocketAddress;
 import java.nio.channels.AsynchronousSocketChannel;
 import java.nio.channels.ClosedChannelException;
 
-import cn.hutool.core.io.IORuntimeException;
-
 /**
  * Socket相关工具类
- * 
+ *
  * @author looly
  * @since 4.5.0
  */
 public class SocketUtil {
-	
+
 	/**
 	 * 获取远程端的地址信息，包括host和端口<br>
 	 * null表示channel为null或者远程主机未连接
-	 * 
+	 *
 	 * @param channel {@link AsynchronousSocketChannel}
 	 * @return 远程端的地址信息，包括host和端口，null表示channel为null或者远程主机未连接
 	 */
@@ -36,11 +38,61 @@ public class SocketUtil {
 	/**
 	 * 远程主机是否处于连接状态<br>
 	 * 通过判断远程地址获取成功与否判断
-	 * 
+	 *
 	 * @param channel {@link AsynchronousSocketChannel}
 	 * @return 远程主机是否处于连接状态
 	 */
 	public static boolean isConnected(AsynchronousSocketChannel channel) {
 		return null != getRemoteAddress(channel);
 	}
+
+	/**
+	 * 创建Socket并连接到指定地址的服务器
+	 *
+	 * @param hostname 地址
+	 * @param port     端口
+	 * @return {@link Socket}
+	 * @throws IORuntimeException IO异常
+	 * @since 5.7.8
+	 */
+	public static Socket connect(String hostname, int port) throws IORuntimeException {
+		return connect(hostname, port, -1);
+	}
+
+	/**
+	 * 创建Socket并连接到指定地址的服务器
+	 *
+	 * @param hostname          地址
+	 * @param port              端口
+	 * @param connectionTimeout 连接超时
+	 * @return {@link Socket}
+	 * @throws IORuntimeException IO异常
+	 * @since 5.7.8
+	 */
+	public static Socket connect(final String hostname, int port, int connectionTimeout) throws IORuntimeException {
+		return connect(new InetSocketAddress(hostname, port), connectionTimeout);
+	}
+
+	/**
+	 * 创建Socket并连接到指定地址的服务器
+	 *
+	 * @param address           地址
+	 * @param connectionTimeout 连接超时
+	 * @return {@link Socket}
+	 * @throws IORuntimeException IO异常
+	 * @since 5.7.8
+	 */
+	public static Socket connect(InetSocketAddress address, int connectionTimeout) throws IORuntimeException {
+		final Socket socket = new Socket();
+		try {
+			if (connectionTimeout <= 0) {
+				socket.connect(address);
+			} else {
+				socket.connect(address, connectionTimeout);
+			}
+		} catch (IOException e) {
+			throw new IORuntimeException(e);
+		}
+		return socket;
+	}
 }