1、对应的IP
2、将打印的文本文件
1 import java.io.ByteArrayOutputStream;
2 import java.io.File;
3 import java.io.FileInputStream;
4 import java.io.IOException;
5 import java.io.InputStream;
6 import java.io.OutputStream;
7 import java.net.InetSocketAddress;
8 import java.net.Socket;
9
10 public class PrintBySocket
11 {
12
13 private static String ip = "172.16.12.251";// 更改成网络打印机的IP
14
15 private static int port = 9100;// 更改成网络打印机的端口
16
17 private static int timeout = 1000;// 设置超时时间
18
19 public static void main(String[] args)
20 throws Exception
21 {
22 String filepath = "C:\\RFID2.txt";// 指令文件存放的位置
23 File file = new File(filepath);
24 byte[] command = new byte[10];
25 String label = null;
26 if (file.exists())
27 {// 检查指令文件存在不存在
28 InputStream is = new FileInputStream(file);
29 ByteArrayOutputStream out = new ByteArrayOutputStream();
30 int len = 0;
31 while ((len = is.read(command)) > 0)
32 {
33 out.write(
34 command, 0, len);
35 }
36 // label = new String(out.toByteArray(),"utf-8");
37 label = new String(out.toByteArray(), "gbk");
38 System.out.println(label);
39 }
40 else
41 {// 指令文件不存在则直接返回
42 System.out.println("指令文件不存在");
43 return;
44 }
45
46 Socket s = null;
47 OutputStream writer = null;
48 try
49 {
50 s = new Socket();
51 s.connect(new InetSocketAddress(ip, port));
52 s.setSoTimeout(timeout);
53 writer = s.getOutputStream();
54 byte[] bytes;
55 // bytes = label.getBytes("utf-8");
56 bytes = label.getBytes("gbk");
57 writer.write(
58 bytes, 0, bytes.length);
59 writer.flush();
60 }
61 catch (IOException e)
62 {
63 throw new RuntimeException("试图连接到打印机的时候发生错误，请检查你的网络连接，并确认打印机已经开机!", e);
64 }
65 finally
66 {
67 if (writer != null)
68 {
69 try
70 {
71 writer.close();
72 }
73 catch (Exception e)
74 {
75 }
76 }
77 if (s != null)
78 {
79 try
80 {
81 s.close();
82 }
83 catch (Exception e)
84 {
85 }
86 }
87 }
88 }
89 }
指令打印程序（通过Socket）
时间： 2024-10-11 09:55:17