socket 客服端

package com.code.modules.roaddiseasecontroller;

import com.alibaba.fastjson.JSON;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.*;

public class TCP {
    private PrintWriter writer; // 声明PrintWriter类对象
    Socket socket; // 声明Socket对象

    private void client() { // 连接套接字方法
        System.out.println("尝试连接
"); // 输出提示信息
        DataInputStream dataInputStream = null;
        DataOutputStream dataOutputStream = null;

        String ip="117.184.126.50";
//        String ip="10.17.18.122";
        String charsetName = "gbk";

        try { // 捕捉异常
            socket = new Socket(ip, 8009); // 实例化Socket对象，连接端口8080服务器
            writer = new PrintWriter(socket.getOutputStream(), true);//建立通信通道，强行输出数据
            System.out.println("完成连接");

            //发送数据
            dataOutputStream = new DataOutputStream(socket.getOutputStream());
            Map map = new HashMap();
            Map iddr = new HashMap();
            Map action = new HashMap();
            action.put("reqid","1234 再来一次");
            action.put("method","GEOCODER");
            action.put("stime","2020-05-15T08:00:00");
            action.put("location","121.672272,31.271923");
            action.put("coordsys","gps");
            action.put("management","pudong-gl");


            iddr.put("action",action);
            map.put("iddr",iddr);

            String message =JSON.toJSONString(map);

//            message = "要发送的数据===我是客户端";
            dataOutputStream.write(message.getBytes(charsetName));

            //接收服务端的数据
            StringBuilder stringBuilder = new StringBuilder();
            dataInputStream = new DataInputStream(socket.getInputStream());
            byte[] buf = new byte[1024];
            int len = dataInputStream.read(buf);
            if (len != -1) {
                stringBuilder.append(new String(buf, 0, len,charsetName));
            }
            dataInputStream.close();
            dataOutputStream.close();
            String receiveMessage = "" + stringBuilder;
            System.out.println("接收服务端发送的消息为:" + receiveMessage);
        } catch (IOException e){
            e.printStackTrace();
        }finally {
            try {
                if (dataOutputStream!=null){
                    dataOutputStream.close();
                }
                if (dataInputStream!=null){
                    dataInputStream.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public static void main(String[] args) { // 主方法
        TCP clien = new TCP(); // 创建本例对象
        clien.client(); // 调用连接方法

//        times(0);

    }

    public static void times(int count){

        /**
         * Timer：是一个定时器工具，用来执行指定任务
         * TimerTask：是一个抽象类，他的子类可以代表一个被Timer计划的任务
         */
        TimerTask task = new TimerTask() {


            @Override
            public void run() {

                // task to run goes here
                // 执行的输出的内容

                if(count>5){
                    System.out.println(count);

                }else{
                    System.out.println("结束");
                    return;
                }

            }
        };

        Timer timer = new Timer();
        // 定义开始等待时间  --- 等待 5 秒
        // 1000ms = 1s
        long delay = 5000;
        // 定义每次执行的间隔时间
        long intevalPeriod = 5 * 1000;
        // schedules the task to be run in an interval
        // 安排任务在一段时间内运行
        timer.scheduleAtFixedRate(task, delay, intevalPeriod);
    }

}