Android连接网络打印机进行打印

首先这是网络打印工具类，通过Socket实现，多说一句，网络打印机端口号一般默认的是9100

package com.Ieasy.Tool;

import android.annotation.SuppressLint;
import java.io.IOException ;
import java.io.OutputStream ;
import java.io.PrintWriter ;
import java.net.InetSocketAddress ;
import java.net.Socket ;
import java.net.SocketAddress ;
import java.nio.charset.Charset ;

@SuppressLint("NewApi")
public class NetPrinter
{
    public Socket socket;

    public int POS_OPEN_NETPORT = 9100;// 0X238c
    public boolean IFOpen = false;
    public int Net_SendTimeout = 1000;
    public int Net_ReceiveTimeout = 1500;
    public String command = ""; //打印命令字符串
    public byte[] outbytes; //传输的命令集

    PrinterCMD pcmd = new PrinterCMD();

    /// <summary>
    /// 网络打印机 打开网络打印机
    /// </summary>
    /// <param name="ipaddress"></param>
    /// <returns></returns>
    public boolean Open(String ipaddress, int netport)
    {
        if (socket == null)
        {
            try
            {
                SocketAddress ipe = new InetSocketAddress(ipaddress,netport);
                socket = new Socket();  //Socket(ipaddress, netport,true);
                socket.connect(ipe);
                socket.setSoTimeout(Net_ReceiveTimeout);
                //socket.SendTimeout = Net_SendTimeout;
                IFOpen = true;
                //System.out.print("连接成功");
            }
            catch(Exception e)
            {
                //MessageBox.Show("连接不成功");
                e.printStackTrace();
                IFOpen = false;
            }
        }
        else
        {
            try
            {
                socket.close();
                SocketAddress ipe = new InetSocketAddress(ipaddress,netport);
                socket = new Socket();  //Socket(ipaddress, netport,true);
                socket.connect(ipe);
                socket.setSoTimeout(Net_ReceiveTimeout);
                //socket.SendTimeout = Net_SendTimeout;
                IFOpen = true;
            }
            catch(Exception e)
            {
                e.printStackTrace();
                IFOpen = false;
            }
        }
        return IFOpen;
    }

    /// <summary>
    /// 网络打印机 关闭
    /// </summary>
    /// <param name="ipaddress"></param>
    /// <returns></returns>
    public void Close()
    {
        try
        {
            socket.close();
            socket = null;
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
    }

    /// <summary>
    /// 网络打印机 初始化打印机
    /// </summary>
    public void Set()
    {
        try
        {
            command = pcmd.CMD_SetPos();
            OutputStream stream = socket.getOutputStream();
            outbytes =  command.getBytes(Charset.forName("ASCII"));
            stream.write(outbytes);
        }
        catch (IOException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    /// <summary>
    /// 网络打印机 打印的文本
    /// </summary>
    /// <param name="pszString"></param>
    /// <param name="nFontAlign">0:居左 1:居中 2:居右</param>
    /// <param name="nfontsize">字体大小0:正常大小 1:两倍高 2:两倍宽 3:两倍大小 4:三倍高 5:三倍宽 6:三倍大小 7:四倍高 8:四倍宽 9:四倍大小 10:五倍高 11:五倍宽 12:五倍大小</param>
    /// <param name="ifzhenda">0:非针打  1:针打</param>
    public void PrintText(String pszString, int nFontAlign, int nFontSize,int ifzhenda)
    {
        try
        {
            OutputStream stream = socket.getOutputStream();
            command = pcmd.CMD_TextAlign(nFontAlign);
            outbytes =  command.getBytes(Charset.forName("ASCII"));
            stream.write(outbytes);

            if (ifzhenda == 1)
            {
                command = pcmd.CMD_FontSize_BTP_M280(nFontSize);
                outbytes =  command.getBytes(Charset.forName("ASCII"));
                stream.write(outbytes);

                command = pcmd.CMD_FontSize_BTP_M2801(nFontSize);
                outbytes =  command.getBytes(Charset.forName("ASCII"));
                stream.write(outbytes);
            }
            else
            {
                command = pcmd.CMD_FontSize(nFontSize);
                outbytes =  command.getBytes(Charset.forName("ASCII"));
                stream.write(outbytes);
            }

            command = pszString;// +CMD_Enter();
            outbytes =  command.getBytes(Charset.forName("GB2312")); //Charset.defaultCharset()); //forName("UTF-8")
            stream.write(outbytes);
        }
        catch (IOException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
            return;
        }        

    }

    /// <summary>
    /// 网络打印机 回车
    /// </summary>
    public void PrintEnter()
    {
        try
        {
            command = pcmd.CMD_Enter();
            OutputStream stream = socket.getOutputStream();
            outbytes =  command.getBytes(Charset.forName("ASCII"));
            stream.write(outbytes);
        }
        catch (IOException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    /// <summary>
    /// 网络打印机 切割
    /// </summary>
    /// <param name="pagenum">切割时，走纸行数</param>
    public void CutPage(int pagenum)
    {
        try
        {
            OutputStream stream = socket.getOutputStream();

            command = pcmd.CMD_PageGO(pagenum) + pcmd.CMD_Enter();
            outbytes =  command.getBytes(Charset.forName("ASCII"));
            stream.write(outbytes);

            command = pcmd.CMD_CutPage() + pcmd.CMD_Enter();
            outbytes =  command.getBytes(Charset.forName("ASCII"));
            stream.write(outbytes);

        }
        catch (IOException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    /// <summary>
    /// 网络打印机换行
    /// </summary>
    /// <param name="lines"></param>
    public void PrintNewLines(int lines)
    {
        try
        {
            OutputStream stream = socket.getOutputStream();        

            command = pcmd.CMD_FontSize(0);
            outbytes =  command.getBytes(Charset.forName("ASCII"));
            stream.write(outbytes);
            for (int i = 0; i < lines; i++)
            {
                command = "" + pcmd.CMD_Enter();
                outbytes =  command.getBytes(Charset.forName("ASCII"));
                stream.write(outbytes);
            }
        }
        catch (IOException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

  /// <summary>
    /// 打开钱箱
    /// </summary>
    public void OpenQianXiang()
    {
        try
        {
            OutputStream stream = socket.getOutputStream();
            command = "" + pcmd.CMC_QianXiang();
            outbytes =  command.getBytes(Charset.forName("ASCII"));
            stream.write(outbytes);
        }
        catch (IOException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    /// <summary>
    /// 打印条码
    /// </summary>
    /// <param name="numstr"></param>
    /// <param name="height"></param>
    /// <param name="width"></param>
    /// <param name="numweizi">1:上方  2:下方  0:不打印数字</param>
    /// <param name="fontalign">0:居左 1:居中 2:居右</param>
    /// <param name="fontsize">字体大小0:正常大小 1:两倍高 2:两倍宽 3:两倍大小 4:三倍高 5:三倍宽 6:三倍大小 7:四倍高 8:四倍宽 9:四倍大小 10:五倍高 11:五倍宽 12:五倍大小</param>
    public void PrintTiaoMa(String numstr, int height, int width, int numweizi, int fontalign, int fontsize)
    {
        try
        {
            OutputStream stream = socket.getOutputStream();
            command = pcmd.CMD_TiaoMaHeight(height);
            outbytes =  command.getBytes(Charset.forName("ASCII"));
            stream.write(outbytes);

            command = pcmd.CMD_TiaoMaWidth(width);
            outbytes =  command.getBytes(Charset.forName("ASCII"));
            stream.write(outbytes);

            command = pcmd.CMD_TiaoMaWeiZi(numweizi);
            outbytes =  command.getBytes(Charset.forName("ASCII"));
            stream.write(outbytes);

            command = pcmd.CMD_TextAlign(fontalign);
            outbytes =  command.getBytes(Charset.forName("ASCII"));
            stream.write(outbytes);

            command = pcmd.CMD_FontSize(fontsize);
            outbytes =  command.getBytes(Charset.forName("ASCII"));
            stream.write(outbytes);

            command = pcmd.CMD_TiaoMaPrint(numstr);
            outbytes =  command.getBytes(Charset.forName("ASCII"));
            stream.write(outbytes);
        }
        catch (IOException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

class PrinterCMD
{
    /// <summary>
    /// 初始化打印机
    /// </summary>
    /// <returns></returns>
    public String CMD_SetPos()
    {
        return new StringBuffer().append((char)27).append((char)64).toString();
    }

    /// <summary>
    /// 换行（回车）
    /// </summary>
    /// <returns></returns>
    public String CMD_Enter()
    {
        return new StringBuffer().append((char)10).toString();
    }

    /// <summary>
    /// 对齐模式
    /// </summary>
    /// <param name="align">0:左对齐 1:中对齐 2:右对齐</param>
    /// <returns></returns>
    public String CMD_TextAlign(int align)
    {
        return new StringBuffer().append((char)27).append((char)97).append((char)align).toString();
    }

    /// <summary>
    /// 字体的大小
    /// </summary>
    /// <param name="nfontsize">0:正常大小 1:两倍高 2:两倍宽 3:两倍大小 4:三倍高 5:三倍宽 6:三倍大小 7:四倍高 8:四倍宽 9:四倍大小 10:五倍高 11:五倍宽 12:五倍大小</param>
    /// <returns></returns>
    public String CMD_FontSize(int nfontsize)
    {
        String _cmdstr = "";

        //设置字体大小
        switch (nfontsize)
        {
            case -1:
                _cmdstr = new StringBuffer().append((char)29).append((char)33).append((char)0).toString();//29 33
                break;

            case 0:
                _cmdstr = new StringBuffer().append((char)29).append((char)33).append((char)0).toString();//29 33
                break;

            case 1:
                _cmdstr = new StringBuffer().append((char)29).append((char)33).append((char)1).toString();
                break;

            case 2:
                _cmdstr = new StringBuffer().append((char)29).append((char)33).append((char)16).toString();
                break;

            case 3:
                _cmdstr = new StringBuffer().append((char)29).append((char)33).append((char)17).toString();
                break;

            case 4:
                _cmdstr = new StringBuffer().append((char)29).append((char)33).append((char)2).toString();
                break;

            case 5:
                _cmdstr = new StringBuffer().append((char)29).append((char)33).append((char)32).toString();
                break;

            case 6:
                _cmdstr = new StringBuffer().append((char)29).append((char)33).append((char)34).toString();
                break;

            case 7:
                _cmdstr = new StringBuffer().append((char)29).append((char)33).append((char)3).toString();
                break;

            case 8:
                _cmdstr = new StringBuffer().append((char)29).append((char)33).append((char)48).toString();
                break;

            case 9:
                _cmdstr = new StringBuffer().append((char)29).append((char)33).append((char)51).toString();
                break;

            case 10:
                _cmdstr = new StringBuffer().append((char)29).append((char)33).append((char)4).toString();
                break;

            case 11:
                _cmdstr = new StringBuffer().append((char)29).append((char)33).append((char)64).toString();
                break;

            case 12:
                _cmdstr = new StringBuffer().append((char)29).append((char)33).append((char)68).toString();
                break;

        }
        return _cmdstr;
    }

    /// <summary>
    /// BTP-M280(针打) 倍宽倍高
    /// </summary>
    /// <param name="size">0:取消倍宽倍高模式  1:倍高模式 2:倍宽模式 3:两倍大小</param>
    /// <returns></returns>
    public String CMD_FontSize_BTP_M280(int size)
    {
        String _cmdstr = "";
        //只有0和1两种模式
        int fontsize = size;

        switch (fontsize)
        {
            case 1:
                _cmdstr = new StringBuffer().append((char)28).append((char)33).append((char)8).toString();
                break;
            case 2:
                _cmdstr = new StringBuffer().append((char)28).append((char)33).append((char)4).toString();
                break;
            case 3:
                _cmdstr = new StringBuffer().append((char)28).append((char)87).append((char)1).toString();
                break;
            default:
                _cmdstr = new StringBuffer().append((char)28).append((char)87).append((char)0).toString();
                break;
        }

        return _cmdstr;
    }

    /// <summary>
    /// BTP-M280(针打) 倍宽倍高
    /// </summary>
    /// <param name="size">0:取消倍宽倍高模式  1:倍高模式 2:倍宽模式 3:两倍大小</param>
    /// <returns></returns>
    public String CMD_FontSize_BTP_M2801(int size)
    {
        String _cmdstr = "";
        //只有0和1两种模式
        int fontsize = size;

        switch (fontsize)
        {
            case 1:
                _cmdstr = new StringBuffer().append((char)27).append((char)33).append((char)17).toString();
                break;
            case 2:
                _cmdstr = new StringBuffer().append((char)27).append((char)33).append((char)33).toString();
                break;
            case 3:
                _cmdstr = new StringBuffer().append((char)27).append((char)33).append((char)49).toString();
                break;
            default:
                _cmdstr = new StringBuffer().append((char)27).append((char)33).append((char)1).toString();
                break;
        }

        return _cmdstr;
    }

    /// <summary>
    /// 走纸
    /// </summary>
    /// <param name="line">走纸的行数</param>
    /// <returns></returns>
    public String CMD_PageGO(int line)
    {
        return new StringBuffer().append((char)27).append((char)100).append((char)line).toString();
    }

    /// <summary>
    /// 切割
    /// </summary>
    /// <returns></returns>
    public String CMD_CutPage()
    {
        return new StringBuffer().append((char)27).append((char)109).toString();
    }

    /// <summary>
    /// 返回状态(返回8位的二进制)
    /// </summary>
    /// <param name="num">1:打印机状态 2:脱机状态 3:错误状态 4:传送纸状态</param>
    /// 返回打印机状态如下：
    /// 第一位：固定为0
    /// 第二位：固定为1
    /// 第三位：0:一个或两个钱箱打开  1:两个钱箱都关闭
    /// 第四位：0:联机  1:脱机
    /// 第五位：固定为1
    /// 第六位：未定义
    /// 第七位：未定义
    /// 第八位：固定为0
    ///
    /// 返回脱机状态如下：
    /// 第一位：固定为0
    /// 第二位：固定为1
    /// 第三位：0:上盖关  1:上盖开
    /// 第四位：0:未按走纸键  1:按下走纸键
    /// 第五位：固定为1
    /// 第六位：0:打印机不缺纸  1: 打印机缺纸
    /// 第七位：0:没有出错情况  1:有错误情况
    /// 第八位：固定为0
    ///
    /// 返回错误状态如下：
    /// 第一位：固定为0
    /// 第二位：固定为1
    /// 第三位：未定义
    /// 第四位：0:切刀无错误  1:切刀有错误
    /// 第五位：固定为1
    /// 第六位：0:无不可恢复错误  1: 有不可恢复错误
    /// 第七位：0:打印头温度和电压正常  1:打印头温度或电压超出范围
    /// 第八位：固定为0
    ///
    /// 返回传送纸状态如下：
    /// 第一位：固定为0
    /// 第二位：固定为1
    /// 第三位：0:有纸  1:纸将尽
    /// 第四位：0:有纸  1:纸将尽
    /// 第五位：固定为1
    /// 第六位：0:有纸  1:纸尽
    /// 第七位：0:有纸  1:纸尽
    /// 第八位：固定为0
    /// <returns></returns>
    public String CMD_ReturnStatus(int num)
    {
        return new StringBuffer().append((char)16).append((char)4).append((char)num).toString();
    }

    /// <summary>
    /// 条码高宽
    /// </summary>
    /// <param name="num"></param>
    /// <returns></returns>
    public String CMD_TiaoMaHeight(int num)
    {
        //return ((char)29).append"h" + ((char)num).toString();
        return new StringBuffer().append((char)29).append((char)104).append((char)num).toString();
    }

    /// <summary>
    /// 条码宽度
    /// </summary>
    /// <param name="num"></param>
    /// <returns></returns>
    public String CMD_TiaoMaWidth(int num)
    {
        //return ((char)29).append"w" + ((char)num).toString();
        return new StringBuffer().append((char)29).append((char)119).append((char)num).toString();
    }

    /// <summary>
    /// 条码数字打印的位置
    /// </summary>
    /// <param name="num">1:上方  2:下方  0:不打印数字</param>
    /// <returns></returns>
    public String CMD_TiaoMaWeiZi(int num)
    {
        return new StringBuffer().append((char)29).append("H").append((char)num).toString();
    }

    /// <summary>
    /// 开始打印(条码类型为CODE39)
    /// </summary>
    /// <param name="numstr"></param>
    /// <returns></returns>
    public String CMD_TiaoMaPrint(String numstr)
    {
        //return ((char)29).append"k" + ((char)4).appendnumstr + ((char)0).toString();
        return new StringBuffer().append((char)29).append((char)107).append((char)4).append(numstr).append ((char)0).toString();
    }

    /// <summary>
    /// 打开钱箱
    /// </summary>
    /// <returns></returns>
    public String CMC_QianXiang()
    {
        return new StringBuffer().append((char)27).append((char)112).append((char)0).append((char)60).append((char)255).toString();
    }
}

具体怎么调用，每个方法注释写得都很清楚了，至于怎么排版，要看纸的宽度了，然后自己计算字符的长度进行设置，下面是一个异步调用的例子，下面方法仅仅是一个例子，请无视其他无用代码。

页面排版实现，首先得知道打印纸的宽度，还有你要在纸上显示几列，譬如我这个方法 我显示了4列，所有我先根据打印纸的宽度 先设置好每一列的大致宽度，如果该列的字符长度大于设置好的 可以设置换行，如果小于，为了排版整齐 可以补空格，大致实现原理就是这样。

  // 粗略计算打印纸上每个字段占的长度
  private int wlname = 18;
  private int wlnum = 6;
  private int wlunit = 7;
  private int wlprice = 9;

 /**
   * 网络打印机
   *
   *
   */
  class NetPrint extends AsyncTask<String, String, String> {
    private String LocalYHID;
    private List<SaveEnity> ListWz = new ArrayList<SaveEnity>();
    private String Rr = "";
    private String GysName = "";
    private String title = "";
    private String printtime = "";
    private String errInfo = "";
    private String TotlePrice = "";
    private NetPrinter printer;
    private String Md_Name;
    private String Date_Time;

    public NetPrint(String LocalYHID, String GysName,String Date_Time) {
      this.LocalYHID = LocalYHID;
      this.GysName = GysName;
      this.Date_Time = Date_Time;
      isclick = true;
    }

    @Override
    protected String doInBackground(String... params) {
      // TODO Auto-generated method stub
      try {
        printer = new NetPrinter();
        if(!Utils.isEmpty(Const.print_Port)){
          printer.Open(Const.print_IP, Integer.parseInt(Const.print_Port));
        }
        if(printer.IFOpen){
          JSONArray ArrayItems = new JSONArray();
          ArrayItems = usedatabase.getLocalData(LocalYHID);
          TotlePrice = usedatabase.getTotlePrice(LocalYHID);
          ListWz = JSON.parseArray(ArrayItems.toString(), SaveEnity.class);
          MyLogger.showLogWithLineNum(5, ListWz.size() + "长度");
          Collections.sort(ListWz, new SaComParator());

          List<String> Select = new ArrayList<String>();
          List<String> EndSelect = new ArrayList<String>();
          for (int i = 0; i < ListWz.size(); i++) {
            SaveEnity save = ListWz.get(i);
            Select.add(save.DJX_CK_NAME);
          }
          for (String s : Select) {
            if (Collections.frequency(EndSelect, s) < 1) EndSelect.add(s);
          }
          for (int i = 0; i < EndSelect.size(); i++) {
            Rr += formatSSTest(EndSelect.get(i), ListWz);
          }
          String Name = "物料名";
          String Num = "数量";
          String Unit = "单位";
          String Price = "单价";
          String Spc = "";
          for (int j = 0; j < wlname - getWordCount("物料名"); j++) {
            Spc = Spc + " ";
          }
          Log.e("物料名称长度"+wlname+"补空格", wlname-getWordCount("物料名")+"");
          Name = Name + Spc;
          Spc = "";
          for (int i = 0; i < wlnum - getWordCount("数量"); i++) {
            Spc = Spc + " ";
          }
          Num = Spc + Num;
          Log.e("数量长度"+wlnum+"补空格", wlnum-getWordCount("数量")+"");
          Spc = "";

          for (int i = 0; i < wlunit - getWordCount("单位"); i++) {
            Spc = Spc + " ";
          }
          Unit = Spc + Unit;
          Spc = "";
          Log.e("单位长度"+wlunit+"补空格", wlunit-getWordCount("单位")+"");
          for (int i = 0; i < wlprice - getWordCount("单价"); i++) {
            Spc = Spc + " ";
          }
          Price = Spc + Price;
          Spc = "";
          Log.e("长度"+wlprice+"补空格", wlprice-getWordCount("单价")+"");
          String printstr = Name + Price + Num + Unit;
          title = "供应商: " + GysName + "\n" + printstr;
          printtime = "打印时间:" + Date_Time + "\n\n";
          Md_Name   = Const.MD_Name;

        }
      } catch (Exception e) {
        e.printStackTrace();
      }
      return null;
    }

    @Override
    protected void onPreExecute() {
      // TODO Auto-generated method stub
      super.onPreExecute();
    }

    @Override
    protected void onPostExecute(String result) {
      // TODO Auto-generated method stub
      super.onPostExecute(result);
      if(printer.IFOpen){
        String[] aaray = Rr.split("#");
        printer.PrintText(title, 0, 0, 0);
        printer.PrintEnter();
        for (String s : aaray) {
          printer.PrintText(s, 0, 0, 0);
        }
        printer.PrintEnter();
        printer.PrintText(TotlePrice, 0, 0, 0);
        printer.PrintEnter();
        printer.PrintEnter();
        printer.PrintText(printtime, 0, 0, 0);
        printer.PrintEnter();
        printer.PrintText(Md_Name, 1,1,0);
        printer.PrintNewLines(5);
        printer.CutPage(0);
        printer.Close();
        isclick = false;
        MyToast.MyLogo(History.this, "打印完成");
      }else{
        MyToast.MyLogo(History.this, "未能连接打印机");
      }
    }
  }