Android进阶——安卓调用ESC/POS打印机打印实例

前言

前一段时间由于工作需要，要研究一下安卓程序调用打印机打印小票，并且要求不能使用蓝牙调用，研究了一下，可以利用socket连接，来实现打印功能。写了个demo，分享一下。

工具：一台打印机（芯烨xp-80xx），一台安卓测试机

开发环境：android studio 1.5

需求：点击按钮，实现打印小票功能，小票上除必要文字外，还要有二维码。

封装了一个pos打印工具类：

package com.example.haoguibao.myapplication; 
 
import java.io.dataoutputstream; 
import java.io.ioexception; 
import java.io.outputstream; 
import java.io.outputstreamwriter; 
import java.net.socket; 
 
/** 
 * created by haoguibao on 16/2/18. 
 * description : 封装pos机打印工具类 
 * revision : 
 */ 
public class pos { 
  //定义编码方式 
  private static string encoding = null; 
 
  private socket sock = null; 
  // 通过socket流进行读写 
  private outputstream socketout = null; 
  private outputstreamwriter writer = null; 
 
  /** 
   * 初始化pos实例 
   * 
   * @param ip 打印机ip 
   * @param port 打印机端口号 
   * @param encoding 编码 
   * @throws ioexception 
   */ 
  public pos(string ip, int port, string encoding) throws ioexception { 
    sock = new socket(ip, port); 
    socketout = new dataoutputstream(sock.getoutputstream()); 
    this.encoding = encoding; 
    writer = new outputstreamwriter(socketout, encoding); 
  } 
 
  /** 
   * 关闭io流和socket 
   * 
   * @throws ioexception 
   */ 
  protected void closeioandsocket() throws ioexception { 
    writer.close(); 
    socketout.close(); 
    sock.close(); 
  } 
 
  /** 
   * 打印二维码 
   * 
   * @param qrdata 二维码的内容 
   * @throws ioexception 
   */ 
  protected void qrcode(string qrdata) throws ioexception { 
    int modulesize = 8; 
    int length = qrdata.getbytes(encoding).length; 
 
    //打印二维码矩阵 
    writer.write(0x1d);// init 
    writer.write("(k");// adjust height of barcode 
    writer.write(length + 3); // pl 
    writer.write(0); // ph 
    writer.write(49); // cn 
    writer.write(80); // fn 
    writer.write(48); // 
    writer.write(qrdata); 
 
    writer.write(0x1d); 
    writer.write("(k"); 
    writer.write(3); 
    writer.write(0); 
    writer.write(49); 
    writer.write(69); 
    writer.write(48); 
 
    writer.write(0x1d); 
    writer.write("(k"); 
    writer.write(3); 
    writer.write(0); 
    writer.write(49); 
    writer.write(67); 
    writer.write(modulesize); 
 
    writer.write(0x1d); 
    writer.write("(k"); 
    writer.write(3); // pl 
    writer.write(0); // ph 
    writer.write(49); // cn 
    writer.write(81); // fn 
    writer.write(48); // m 
 
    writer.flush(); 
 
  } 
 
  /** 
   * 进纸并全部切割 
   * 
   * @return 
   * @throws ioexception 
   */ 
  protected void feedandcut() throws ioexception { 
    writer.write(0x1d); 
    writer.write(86); 
    writer.write(65); 
    //    writer.write(0); 
    //切纸前走纸多少 
    writer.write(100); 
    writer.flush(); 
 
    //另外一种切纸的方式 
    //    byte[] bytes = {29, 86, 0}; 
    //    socketout.write(bytes); 
  } 
 
  /** 
   * 打印换行 
   * 
   * @return length 需要打印的空行数 
   * @throws ioexception 
   */ 
  protected void printline(int linenum) throws ioexception { 
    for (int i = 0; i < linenum; i++) { 
      writer.write("\n"); 
    } 
    writer.flush(); 
  } 
 
  /** 
   * 打印换行(只换一行) 
   * 
   * @throws ioexception 
   */ 
  protected void printline() throws ioexception { 
    writer.write("\n"); 
    writer.flush(); 
  } 
 
  /** 
   * 打印空白(一个tab的位置，约4个汉字) 
   * 
   * @param length 需要打印空白的长度, 
   * @throws ioexception 
   */ 
  protected void printtabspace(int length) throws ioexception { 
    for (int i = 0; i < length; i++) { 
      writer.write("\t"); 
    } 
    writer.flush(); 
  } 
 
  /** 
   * 打印空白（一个汉字的位置） 
   * 
   * @param length 需要打印空白的长度, 
   * @throws ioexception 
   */ 
  protected void printwordspace(int length) throws ioexception { 
    for (int i = 0; i < length; i++) { 
      writer.write(" "); 
    } 
    writer.flush(); 
  } 
 
  /** 
   * 打印位置调整 
   * 
   * @param position 打印位置 0：居左(默认) 1：居中 2：居右 
   * @throws ioexception 
   */ 
  protected void printlocation(int position) throws ioexception { 
    writer.write(0x1b); 
    writer.write(97); 
    writer.write(position); 
    writer.flush(); 
  } 
 
  /** 
   * 绝对打印位置 
   * 
   * @throws ioexception 
   */ 
  protected void printlocation(int light, int weight) throws ioexception { 
    writer.write(0x1b); 
    writer.write(0x24); 
    writer.write(light); 
    writer.write(weight); 
    writer.flush(); 
  } 
 
  /** 
   * 打印文字 
   * 
   * @param text 
   * @throws ioexception 
   */ 
  protected void printtext(string text) throws ioexception { 
    string s = text; 
    byte[] content = s.getbytes("gbk"); 
    socketout.write(content); 
    socketout.flush(); 
  } 
 
  /** 
   * 新起一行，打印文字 
   * 
   * @param text 
   * @throws ioexception 
   */ 
  protected void printtextnewline(string text) throws ioexception { 
    //换行 
    writer.write("\n"); 
    writer.flush(); 
 
    string s = text; 
    byte[] content = s.getbytes("gbk"); 
    socketout.write(content); 
    socketout.flush(); 
  } 
 
  /** 
   * 初始化打印机 
   * 
   * @throws ioexception 
   */ 
  protected void initpos() throws ioexception { 
    writer.write(0x1b); 
    writer.write(0x40); 
    writer.flush(); 
  } 
 
  /** 
   * 加粗 
   * 
   * @param flag false为不加粗 
   * @return 
   * @throws ioexception 
   */ 
  protected void bold(boolean flag) throws ioexception { 
    if (flag) { 
      //常规粗细 
      writer.write(0x1b); 
      writer.write(69); 
      writer.write(0xf); 
      writer.flush(); 
    } else { 
      //加粗 
      writer.write(0x1b); 
      writer.write(69); 
      writer.write(0); 
      writer.flush(); 
    } 
  } 
} 

其中，打印机的ip和端口号从打印机的属性设置处可查。

mainactivity中进行调用：

package com.example.haoguibao.myapplication; 
 
import android.os.bundle; 
import android.support.v7.app.appcompatactivity; 
import android.view.view; 
import android.widget.button; 
 
import java.io.ioexception; 
import java.net.unknownhostexception; 
import java.util.arraylist; 
import java.util.list; 
 
public class mainactivity extends appcompatactivity { 
  //订单菜品集合 
  private list<foodsbean> foodsbean; 
 
  private pos pos; 
 
  @override 
  protected void oncreate(bundle savedinstancestate) { 
    super.oncreate(savedinstancestate); 
    setcontentview(r.layout.activity_main); 
 
    button bt_print = (button) findviewbyid(r.id.button); 
 
 
    bt_print.setonclicklistener(new view.onclicklistener() { 
      @override 
      public void onclick(view v) { 
 
        // 开启一个子线程 
        new thread() { 
          public void run() { 
            try { 
              pos = new pos("ip", 9100, "gbk");  //第一个参数是打印机网口ip 
 
              //初始化打印机 
              pos.initpos(); 
 
              //初始化订单数据 
              initdata(); 
 
              pos.bold(true); 
              pos.printtabspace(2); 
              pos.printwordspace(1); 
              pos.printtext("**测试店铺"); 
 
              pos.printlocation(0); 
              pos.printtextnewline("----------------------------------------------"); 
              pos.bold(false); 
              pos.printtextnewline("订 单 号：1005199"); 
              pos.printtextnewline("用 户 名：15712937281"); 
              pos.printtextnewline("桌  号：3号桌"); 
              pos.printtextnewline("订单状态：订单已确认"); 
              pos.printtextnewline("订单日期：2016/2/19 12:34:53"); 
              pos.printtextnewline("付 款 人：线下支付（服务员：宝哥）"); 
              pos.printtextnewline("服 务 员：1001"); 
              pos.printtextnewline("订单备注：不要辣，少盐"); 
              pos.printline(2); 
 
              pos.printtext("品项"); 
              pos.printlocation(20, 1); 
              pos.printtext("单价"); 
              pos.printlocation(99, 1); 
              pos.printwordspace(1); 
              pos.printtext("数量"); 
              pos.printwordspace(3); 
              pos.printtext("小计"); 
              pos.printtextnewline("----------------------------------------------"); 
 
 
              for (foodsbean foods : foodsbean) { 
                pos.printtextnewline(foods.getname()); 
                pos.printlocation(20, 1); 
                pos.printtext(foods.getprice()); 
                pos.printlocation(99, 1); 
                pos.printwordspace(1); 
                pos.printtext(foods.getnumber()); 
                pos.printwordspace(3); 
                pos.printtext(foods.getsum()); 
              } 
 
              pos.printtextnewline("----------------------------------------------"); 
 
              pos.printlocation(1); 
              pos.printline(2); 
              //打印二维码 
              pos.qrcode("http://blog.csdn.net/haovip123"); 
 
              //切纸 
              pos.feedandcut(); 
 
              pos.closeioandsocket(); 
              pos = null; 
            } catch (unknownhostexception e) { 
              e.printstacktrace(); 
            } catch (ioexception e) { 
              e.printstacktrace(); 
            } 
          } 
 
        }.start(); 
 
      } 
    }); 
  } 
 
  private void initdata() { 
    foodsbean = new arraylist<>(); 
 
    for (int i = 0; i < 4; i++) { 
      foodsbean fb = new foodsbean(); 
      fb.setname("测试菜品" + i); 
      fb.setprice("90.00"); 
      fb.setnumber("1" + i); 
      fb.setsum("10" + i + ".00"); 
      foodsbean.add(fb); 
    } 
  } 
} 

附：小票中菜品的bean类

public class foodsbean { 
  private string name; 
  private string price; 
  private string number; 
  private string sum; 
 
  public string getname() { 
    return name; 
  } 
  public void setname(string name) { 
    this.name = name; 
  } 
  public string getprice() { 
    return price; 
  } 
  public void setprice(string price) { 
    this.price = price; 
  } 
  public string getnumber() { 
    return number; 
  } 
  public void setnumber(string number) { 
    this.number = number; 
  } 
  public string getsum() { 
    return sum; 
  } 
  public void setsum(string sum) { 
    this.sum = sum; 
  } 
} 

打印小票样品如图：

小结：

对于调用打印机，不论使用java语言还是其他语言，思路都是一样的，利用socket连接上打印机以后，通过io流进行输出打印，它们的打印指令都是一样的，可以下载打印手册，针对不同的设置，使用不同的打印指令即可。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。