本篇文章给大家带来的内容是关于java端口监听的实现代码，有一定的参考价值，有需要的朋友可以参考一下，希望对你有所帮助。
import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Statement;
import java.text.SimpleDateFormat;
import java.util.Date;
public class test {
public static void main(String[] args) throws IOException, ClassNotFoundException, SQLException {
// 客户端
SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss");
try {
PrintStream out = new PrintStream("D://Systemout" + format.format(new Date()) + ".txt");
System.setOut(out);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
// System.out.println("aaa");
// 1、创建客户端Socket，指定服务器地址和端口
ServerSocket serverSocket = new ServerSocket(7080);
while(true){
Socket socket = serverSocket.accept();
// 2、获取输出流，向服务器端发送信息
/*
* Scanner scanner =new Scanner(socket.getInputStream());//创建一个客户端的输入流
* （用于在服务端显示）
*
* String msg; while(scanner.hasNextLine()){//获取客户端发送的信息 msg=scanner.nextLine();
* System.out.println(msg); }
*/
BufferedInputStream bis = new BufferedInputStream(socket.getInputStream());
DataInputStream dis = new DataInputStream(bis);
byte[] bytes = new byte[1]; // 一次读取一个byte
String ret = "";
while (dis.read(bytes) != -1) {
ret += bytesToHexString(bytes) + " ";
if (dis.available() == 0) { // 一个请求
System.out.print(ret + ' ');
}
}
// String ret = "47 38 30 31 33 35 36 32 fe 0d ff 06 6e ff 53 51 55 65 78 67 19 21 14 c7 cb fe 0c 01 07 e2 09 06 10 01 04 01 2f 01 0a 27 10 00 3c 1c 59 15 1d";
System.out.println("---");
String ret1 = ret.substring(0, ret.length());
System.out.println("有效字符串为:" + ret1);
String ret2 = ret1.substring(0, 24);
System.out.println("注册码:" + ret2);
String ret3 = ret1.substring(24, 75);
System.out.println("设备码:" + ret3);
String ret4 = ret1.substring(75, ret1.length());
System.out.println("数据:" + ret4);
String zcm = ret2.substring(0, ret2.length()).replaceAll(" ", "");
String ss1 = ret4.substring(9, 30).replaceAll(" ", "");
String ss2 = ret4.substring(30, 54).replaceAll(" ", "");
String ss3 = ret4.substring(54, 60).replaceAll(" ", "");
String ss4 = ret4.substring(60, 65).replaceAll(" ", "");
int year = Integer.parseInt(ss1.substring(0, 4).replaceAll("^0[x|X]", ""), 16);
System.out.println("年份:" + year);
int month = Integer.parseInt(ss1.substring(4, 6).replaceAll("^0[x|X]", ""), 16);
System.out.println("月:" + month);
int day = Integer.parseInt(ss1.substring(6, 8).replaceAll("^0[x|X]", ""), 16);
System.out.println("日:" + day);
int hour = Integer.parseInt(ss1.substring(8, 10).replaceAll("^0[x|X]", ""), 16);
System.out.println("时:" + hour);
int min = Integer.parseInt(ss1.substring(10, 12).replaceAll("^0[x|X]", ""), 16);
System.out.println("分:" + min);
int sec = Integer.parseInt(ss1.substring(12, 14).replaceAll("^0[x|X]", ""), 16);
System.out.println("秒:" + sec);
int temp = Integer.parseInt(ss2.substring(0, 4).replaceAll("^0[x|X]", ""), 16);
System.out.println("温度:" + temp);
int sw = Integer.parseInt(ss2.substring(4, 8).replaceAll("^0[x|X]", ""), 16);
System.out.println("水位:" + sw);
// 字符串类型的日期与时间直接存储到数据库
String date = String.valueOf(year) + "-" + String.valueOf(month) + "-" + String.valueOf(day);
System.out.println(date);
String time = String.valueOf(hour) + "时" + String.valueOf(min) + "分" + String.valueOf(sec) + "秒";
System.out.println(time);
String driverName = "com.mysql.jdbc.Driver";
String dbURL = "jdbc:mysql://localhost:3306/dire";
String userName = "root";
String userPwd = "sa";
Class.forName(driverName);
Connection con = DriverManager.getConnection(dbURL, userName, userPwd);
System.out.println("连接数据库成功");
Statement stat = con.createStatement();
String sql = "INSERT INTO shuju(注册码,日期,时间,温度,水位) VALUES(?,?,?,?,?)";
PreparedStatement pstmt;
try {
pstmt = (PreparedStatement) con.prepareStatement(sql);
pstmt.setObject(1, zcm);
pstmt.setObject(2, date);
pstmt.setObject(3, time);
pstmt.setObject(4, temp);
pstmt.setObject(5, sw);
pstmt.executeUpdate();
pstmt.close();
con.close();
} catch (SQLException e) {
e.printStackTrace();
}
System.out.println("成功");
}
}
public static String bytesToHexString(byte[] src) {
StringBuilder stringBuilder = new StringBuilder("");
if (src == null || src.length <= 0) {
return null;
}
for (int i = 0; i < src.length; i++) {
int v = src[i] & 0xFF;
String hv = Integer.toHexString(v);
if (hv.length() < 2) {
stringBuilder.append(0);
}
stringBuilder.append(hv);
}
return stringBuilder.toString();
}
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