Question

我花了很多时间了解如何在Zebra打印机（通过网络）上使用CPCL打印PCX图像，而无需将图像下载到打印机。

在我看来，文档中的示例非常模糊。

我附上了一个示例类来展示如何简单地打印图像。它需要在类路径上使用“zebra.pcx”图像。

希望它有所帮助。

Answer 1

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.Socket;

public class PrintZebraPCXImage {

    public static void main(String[] args) throws Exception {
        PrintZebraPCXImage instance = new PrintZebraPCXImage();
        instance.print("192.168.1.133", 6101);
    }

    public void print(String address, int port) throws Exception {
        Socket socket = null;
        DataOutputStream stream = null;

        socket = new Socket(address, port);

        try {
            stream = new DataOutputStream(socket.getOutputStream());
            ByteArrayOutputStream bos = readFileToString(this.getClass().getClassLoader().getResourceAsStream("zebra.pcx"));

            stream.writeBytes("! 0 200 200 300 1\r\n");
            stream.writeBytes("PCX 20 0\r\n");

            stream.write(bos.toByteArray());
            stream.writeBytes("PRINT\r\n");

        } finally {
            if (stream != null) {
                stream.close();
            }
            if (socket != null) {
                socket.close();
            }
        }
    }

    public ByteArrayOutputStream readFileToString(InputStream is) {
        InputStreamReader isr = null;
        ByteArrayOutputStream bos = null;
        try {
            isr = new InputStreamReader(is);
            bos = new ByteArrayOutputStream();

            byte[] buffer = new byte[2048];
            int n = 0;
            while (-1 != (n = is.read(buffer))) {
                bos.write(buffer, 0, n);
            }

            return bos;
        } catch (Exception e) {
            throw new RuntimeException(e);
        } finally {
            if (isr != null) {
                try {
                    isr.close();
                } catch (IOException e) {
                }
            }
            if (is != null) {
                try {
                    is.close();
                } catch (IOException e) {
                }
            }
        }
    }
}

使用CPCL在Zebra打印机上打印PCX图像

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