java socket请求处理

java socket请求处理

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.Socket;
import lombok.extern.slf4j.Slf4j;
import net.icsoc.intelcc.common.BussinessException;

/**
 * socket调用
 * @author hudy
 */
@Slf4j
public class SocketUtil {

  /**
   * 获取socket连接
   *
   * @param ip
   * @param port
   * @return
   */
  public static Socket getConnection(String ip, int port) {
    Socket socket = null;
    try {
      socket = new Socket(ip, port);
      socket.setSoTimeout(30000);
    } catch (IOException e) {
      log.error("获取socket连接失败", e);
      throw new BussinessException("获取socket连接失败");
    }
    return socket;
  }

  /**
   * 发送报文
   *
   * @param socket
   * @param cmd
   * @return
   */
  private static String send(Socket socket, String cmd) {
    InputStream in = null;
    OutputStream out = null;
    BufferedReader br = null;
    try {
      // in代表服务器到客户端的流
      in = socket.getInputStream();
      // 代表客户端到服务器的流
      out = socket.getOutputStream();

      // 输入执行命令
      PrintWriter printWriter = new PrintWriter(out, true);
      printWriter.println(cmd);
      printWriter.flush();

      // 接收执行命令结果
      br = new BufferedReader(new InputStreamReader(in));
      return br.readLine();
    } catch (Exception e) {
      log.error("调用socket失败", e);
      throw new BussinessException("调用socket失败");
    } finally {
      if (br != null) {
        try {
          br.close();
        } catch (IOException e) {
          e.printStackTrace();
        }
      }
      if (in != null) {
        try {
          in.close();
        } catch (IOException e) {
          e.printStackTrace();
        }
      }
      if (out != null) {
        try {
          out.close();
        } catch (IOException e) {
          e.printStackTrace();
        }
      }
    }
  }

  /**
   * 关闭socket连接
   *
   * @param socket
   */
  private static void close(Socket socket) {
    if (socket != null) {
      try {
        socket.close();
      } catch (IOException e) {
        log.error("socket关闭失败", e);
        throw new BussinessException("socket关闭失败");
      }
    }
  }

  /**
   * 发送消息
   *
   * @param host
   * @param port
   * @param msg
   */
  public static String sendSocketMessage(String host, int port, String msg) {
    Socket socket = null;
    String response = null;
    try {
      socket = getConnection(host, port);
      response = send(socket, msg);
    } finally {
      close(socket);
    }
    return response;
  }

  public static void main(String args[]) {
    String resp = sendSocketMessage("202.25.1.138", 5015, "reload vcc 782\r\n\r\n");
    log.info("socket返回:{}", resp);
  }
}