最近写个指定打印机打印条码，并且上传服务器保存备份，方便下次打印

如果不需要上传直接将图片流直接给 new FileInputStream(filePath); Doc doc = new SimpleDoc(图片流, dof, das);

思路：

1、在前台用div画布局

2、转成base64图片数据流

3、将数据流发送给后台

4、后台进行数据解码并且上传

5、上传成功后根据路径和打印机名称调动打印机打印

PS：可能写的不是很详细大家凑合看

1、在前台用div画布局

HTML

<#include "../include/header.html" />
打印

print.JS

2、转成base64图片数据流

3、将数据流发送给后台

/*
* Create By:    lkj
* Create Date:  2018年08月27日10:10:37
* Desc:         打印工具
*
* */function MyPrint(printData) {/**** 描述: 该方法判断进入哪一个打印方法* @auther: lkj* @date: 2018/8/28 上午9:21**/// 根据类型判断进入那个方法printData.type = "TEST2";printData.text = "000002RSEOT";printData.code = "21442650";printData.printName = "HP DeskJet 2600 series";if(printData.type == "TEST"){//打印一维码   内部追溯条码InternalTracingBarCode(printData);}else if(printData.type == "TEST2"){// ZS11E电池包客户追溯条码K288ABatteryPackCustomerTraceabilityBarCode(printData);}
}
function K288ABatteryPackCustomerTraceabilityBarCode(printData) {/**** 描述:* @auther: lkj* @date: 2018/8/28 上午9:33* @param:printData 需要打印的数据*/// 先进行判断该条码是否已经打印过，如果打印过则直接打印 如果没有打印则获取服务器照片存储路径var fileName = printData.text+"-2.png";var isPrint = myPostAjax("/is/print",{fileName:fileName,printName:printData.printName});if(isPrint.success){alert("打印成功");return;}else{if(isPrint.message != null && isPrint.message != "" && isPrint.message != undefined){alert(isPrint.message);return;}}var barCode = '';barCode += '';barCode += '';barCode += '12342234
';barCode += '1234567822345678
';barCode += '12345678
';barCode += '1234567822345678';barCode += '';barCode += '';barCode += '';var width = 200;// 二维码宽高var height = 200;$("#barCode").html(barCode); // 设置条码内容$("#TEST").show(); // 显示// 宽高必须设置，否则无法上传$("#TEST").attr("style","width:"+870+"px;height:245px");$('#towCode').qrcode({render: "canvas",text: printData.text,width: width,height: height,});$('#towCode2').qrcode({render: "canvas",text: printData.text,width: width,height: height,});// 设置名称 一维码或二维码内容 加类型 一维码为-1  二维码为-2getImgStr("TEST",fileName,isPrint.code,printData.printName);
}
function InternalTracingBarCode(printData) {/**** 描述: 打印一维码 内部追溯条码* @auther: lkj* @date: 2018/8/28 上午9:21* @param:printData 需要打印的数据**/// 先进行判断该条码是否已经打印过，如果打印过则直接打印 如果没有打印则获取服务器照片存储路径var fileName = printData.text+"-1.png";var isPrint = myPostAjax("/is/print",{fileName:fileName,printName:printData.printName});if(isPrint.success){alert("打印成功");return;}else{if(isPrint.message != null && isPrint.message != "" && isPrint.message != undefined){alert(isPrint.message);return;}}// 设置条码布局 PS可以先在工具上画好再复制过来// 改字体样式和条码样式一样，可以自定义更改var fontStyle = "clear:both; background-color: #FFFFFF; color: #000000; text-align: center; font-size: 20px; margin-top: 5px;text-align: center;";var barCode = '';barCode += '
';barCode += '';barCode += '';$("#barCode").html(barCode);// 设置条码内容$("#TEST").show();// 显示$("#bcTarget").barcode(printData.text, "code128",{barWidth:4,barHeight:160,fontSize:20});fontStyle += "width:"+$("#bcTarget").width()+"px;";$("#TEST").attr("style","width:"+$("#bcTarget").width()+"px;");$("#code").attr("style",fontStyle);// K288A电池包客户追溯条码$("#code").html(printData.code);// 设置显示条码// 设置名称 一维码或二维码内容 加类型 一维码为-1  二维码为-2getImgStr("TEST",fileName,isPrint.code,printData.printName);}
function getImgStr(id,fileName,filePath,printName) {/**** 描述: 将div根据id转图片流* @auther: lkj* @date: 2018/8/28 上午9:20* @param:id：DIV的id* @param:codeContent：条码名称* @param:filePath：服务器存储路径**/html2canvas($("#"+id), {onrendered: function(canvas) {canvas.id = "mycanvas";// 将div转成图片的字符流var img = convertCanvasToImage(canvas);// 设置需要传参参数 图片数据流 文件名称 文件存储路径var obj = {imgStr:img.src,fileName:fileName,filePath:filePath,printName:printName};// 发送请求至后台var printResult = myPostAjax("/print/internal/tracing/bar/code",obj);if(printResult.success){alert("打印成功");}else{alert(printResult.message);}$("#"+id).hide();// 隐藏},background:'white'// 背景白色});
}
function myPostAjax(url,data){/**** 描述: 封装ajax* @auther: lkj* @date: 2018/8/28 上午9:21**/var resultData = new Object();$.ajax({type:"POST",url:_basePath+url,data:data,dataType:'json',contentType:'application/x-www-form-urlencoded',async:false,success:function (result) {resultData = result;}})return resultData;
}

JAVA

4、后台进行数据解码并且上传

5、上传成功后根据路径和打印机名称调动打印机打印

Controller

package com.hand.utils.prints.controllers;import com.hand.hap.core.IRequest;
import com.hand.hap.system.controllers.BaseController;
import com.hand.hap.system.dto.ResponseData;
import com.hand.utils.components.mapper.UtilMapper;
import com.hand.utils.prints.dto.PrintDto;
import com.hand.utils.prints.service.IPrintService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;import javax.servlet.http.HttpServletRequest;
/*** @Auther:lkj* @Date:2018/8/27 13:44* @E-mail:* @Description:条码打印工具*/
@Controller
public class PrintController extends BaseController {@Autowiredprivate IPrintService service;@Autowiredprivate UtilMapper utilMapper;@RequestMapping(value = "/print/internal/tracing/bar/code")@ResponseBodypublic ResponseData scanningKeyPartsBarcode(PrintDto data, HttpServletRequest request){/**** 功能描述: 打印内部追溯条码 并且上传至服务器备份** @auther:lkj* @date:2018/8/27 下午1:47* @param:[data, request]* @return:com.hand.hap.system.dto.ResponseData**/IRequest requestCtx = createRequestContext(request);ResponseData responseData = new ResponseData();try {responseData = service.printInternalTracingBarCode(requestCtx,data);} catch (Exception e) {e.printStackTrace();responseData.setSuccess(false);responseData.setMessage(e.getMessage());String insertMysql = "INSERT INTO hme_print_event(ERROR_MSG,FILE_PATH,PRINT_NAME)VALUES";insertMysql += "('"+e.getMessage()+"','"+data.getFilePath()+"/"+data.getFileName()+"','"+data.getPrintName()+"')";utilMapper.insertMysql(insertMysql);}return responseData;}@RequestMapping(value = "/is/print")@ResponseBodypublic ResponseData isPrint(PrintDto data, HttpServletRequest request){/**** 功能描述: 查询改条码是否打印过 如果打印过则直接打印 不在上传** @auther:lkj* @date:2018/8/27 下午1:47* @param:[data, request]* @return:com.hand.hap.system.dto.ResponseData**/IRequest requestCtx = createRequestContext(request);ResponseData responseData = new ResponseData();try {responseData = service.isPrint(requestCtx,data);} catch (Exception e) {e.printStackTrace();responseData.setSuccess(false);responseData.setMessage(e.getMessage());String insertMysql = "INSERT INTO hme_print_event(ERROR_MSG,FILE_PATH,PRINT_NAME)VALUES";insertMysql += "('"+e.getLocalizedMessage()+"','"+data.getFilePath()+"/"+data.getFileName()+"','"+data.getPrintName()+"')";utilMapper.insertMysql(insertMysql);}return responseData;}}

IPrintService

package com.hand.utils.prints.service;import com.hand.hap.core.IRequest;
import com.hand.hap.system.dto.ResponseData;
import com.hand.utils.prints.dto.PrintDto;
import com.hand.workshops.dto.WorkshopsIpc;public interface IPrintService {/**** 功能描述: 打印内部追溯条码 并且上传至服务器备份** @auther:lkj* @date:2018/8/27 下午1:48* @param requestCtx 用户信息* @param data 数据* @return:ResponseData*/ResponseData printInternalTracingBarCode(IRequest requestCtx, PrintDto data) throws Exception;/**** 功能描述:查询改条码是否打印过 如果打印过则直接打印 不在上传** @auther:lkj* @date:2018/8/27 下午2:19* @param requestCtx 用户信息* @param data 数据* @return:ResponseData**/ResponseData isPrint(IRequest requestCtx, PrintDto data) throws Exception;
}

PrintServiceImpl

package com.hand.utils.prints.service.impl;import com.hand.hap.core.IRequest;
import com.hand.hap.system.dto.ResponseData;
import com.hand.utils.components.mapper.UtilMapper;
import com.hand.utils.prints.dto.PrintDto;
import com.hand.utils.prints.service.IPrintService;
import com.hand.utils.uploads.service.impl.UploadServiceImpl;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;import javax.print.*;
import javax.print.attribute.DocAttributeSet;
import javax.print.attribute.HashDocAttributeSet;
import javax.print.attribute.HashPrintRequestAttributeSet;
import javax.print.attribute.PrintRequestAttributeSet;
import javax.print.attribute.standard.Copies;
import javax.print.attribute.standard.MediaPrintableArea;
import javax.print.attribute.standard.OrientationRequested;
import javax.print.attribute.standard.PrintQuality;
import java.awt.print.PrinterJob;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.HashMap;@Service
@Transactional(rollbackFor = Exception.class)
public class PrintServiceImpl implements IPrintService{private static final Logger logger = LoggerFactory.getLogger(PrintServiceImpl.class);@Autowiredprivate UtilMapper utilMapper;// 因为这边是工厂的业务，所以我这边需要把错误信息记录到数据库下，好方便以后查看错误信息private String insertErrorMsgSql = "INSERT INTO hme_print_event(ERROR_MSG,FILE_PATH,PRINT_NAME)VALUES";@Overridepublic ResponseData printInternalTracingBarCode(IRequest requestCtx, PrintDto data)throws Exception {/**** 功能描述: 打印内部追溯条码 并且上传至服务器备份** @auther:lkj* @date:2018/8/27 下午1:50* @param:[requestCtx, data]* @return:com.hand.hap.system.dto.ResponseData**/ResponseData responseData = new ResponseData();String filename = data.getFileName();if(!ifNotNull(data.getImgListStr())){responseData.setSuccess(false);responseData.setMessage("图片不可以为空");String insertMysql = insertErrorMsgSql+"('图片不可以为空','"+filename+"','"+data.getPrintName()+"')";utilMapper.insertMysql(insertMysql);return responseData;}if(!ifNotNull(data.getFileName())){responseData.setSuccess(false);responseData.setMessage("图片名称不可以为空");String insertMysql = insertErrorMsgSql+"('图片名称不可以为空','"+filename+"','"+data.getPrintName()+"')";utilMapper.insertMysql(insertMysql);return responseData;}String imgStr = data.getImgStr().split(",")[1];UploadServiceImpl.GenerateImage(imgStr,data.getFilePath()+"/"+filename);
/* UploadServiceImpl.GenerateImage  之前写的上传图片工具
//解码
public static boolean GenerateImage(String imgStr, String imgFilePath) throws IOException {// 对字节数组字符串进行Base64解码并生成图片if (imgStr == null) // 图像数据为空return false;BASE64Decoder decoder = new BASE64Decoder();// Base64解码byte[] bytes = decoder.decodeBuffer(imgStr);for (int i = 0; i < bytes.length; ++i) {if (bytes[i] < 0) {// 调整异常数据bytes[i] += 256;}}// 生成jpeg图片OutputStream out = new FileOutputStream(imgFilePath);out.write(bytes);out.flush();out.close();return true;}*///  上传条码后打印条码String filePath = data.getFilePath()+"/"+filename;return print(filePath,data.getPrintName());}@Overridepublic ResponseData isPrint(IRequest requestCtx, PrintDto data) throws Exception {/**** 功能描述: 查询改条码是否打印过 如果打印过则直接打印 不在上传** @auther:lkj* @date:2018/8/27 下午2:32* @param:[requestCtx, data]* @return:com.hand.hap.system.dto.ResponseData**/ResponseData responseData = new ResponseData();String sql = "SELECT T.PROFILE_VALUE FROM SYS_PROFILE_VALUE T WHERE ";sql += "T.PROFILE_ID = ( SELECT PROFILE_ID FROM sys_profile WHERE PROFILE_NAME = 'UPLOAD_BARCODE' ) ";String filePath = utilMapper.mysql(sql);if(!ifNotNull(filePath)){responseData.setSuccess(false);responseData.setMessage("UPLOAD_BARCODE:快码没有维护条码存放地址");String insertMysql = insertErrorMsgSql+"('UPLOAD_BARCODE:快码没有维护条码存放地址','','')";utilMapper.insertMysql(insertMysql);return responseData;}File file;// 先判断该文件夹是否存在 如果不存在则创建文件夹，并且返回路径file = new File(filePath);if(!file.exists()){file.mkdirs();responseData.setSuccess(false);responseData.setCode(filePath);return responseData;}else{//如果存在则查询改条码是否打印过，如果打印过就直接打印，否则返回路径String fileName = filePath+"/"+data.getFileName();file = new File(fileName);if(file.exists()){return print(fileName,data.getPrintName());}responseData.setSuccess(false);responseData.setCode(filePath);return responseData;}}public ResponseData print(String filePath,String printName)throws Exception {/**** 功能描述:调用指定打印机打印图片** @auther:lkj* @date:2018/8/28 下午1:37* @param:[filePath]* @return:void**/ResponseData responseData = new ResponseData();FileInputStream fin = null;javax.print.PrintService[] printServices = PrinterJob.lookupPrintServices();if(printServices.length == 0){String insertMysql = insertErrorMsgSql+"('打印机列表为空','"+filePath+"','"+printName+"')";utilMapper.insertMysql(insertMysql);responseData.setSuccess(false);responseData.setMessage("打印机列表为空");return responseData;}javax.print.PrintService printService = null;for (int i = 0; i < printServices.length; i++) {String sps = printServices[i].toString();logger.info("Print :" + sps);System.out.println("Print :" + sps);// 查询匹配打印机if (sps.contains(printName)) {printService = printServices[i];break;}}if (null == printService) {String insertMysql = insertErrorMsgSql+"('没有匹配到所指定的打印机','"+filePath+"','"+printName+"')";utilMapper.insertMysql(insertMysql);responseData.setSuccess(false);responseData.setMessage("没有匹配到所指定的打印机");return responseData;}System.out.println("Print Start");logger.info("Print Start");DocFlavor dof = null;if (filePath.endsWith(".gif")) {dof = DocFlavor.INPUT_STREAM.GIF;} else if (filePath.endsWith(".jpg")) {dof = DocFlavor.INPUT_STREAM.JPEG;} else if (filePath.endsWith(".png")) {dof = DocFlavor.INPUT_STREAM.PNG;}PrintRequestAttributeSet pras = new HashPrintRequestAttributeSet();pras.add(OrientationRequested.PORTRAIT);pras.add(new Copies(1));pras.add(PrintQuality.HIGH);DocAttributeSet das = new HashDocAttributeSet();// 设置打印纸张的大小（以毫米为单位）das.add(new MediaPrintableArea(0, 0, 210, 296, MediaPrintableArea.MM));fin = new FileInputStream(filePath);Doc doc = new SimpleDoc(fin, dof, das);DocPrintJob job = printService.createPrintJob();job.print(doc, pras);fin.close();logger.info("打印成功！文件："+filePath+"数量为："+1);System.out.println("Print End");logger.info("Print End");return responseData;}// 判断是否为空private boolean ifNotNull(Object o) {if (o == null || "".equals(o)) {return false;}return true;}}

DTO

package com.hand.utils.prints.dto;/*** @Auther:lkj* @Date:2018/8/27 13:44* @E-mail:* @Description:*/
public class PrintDto {private String imgStr;// 图片流private String[] imgListStr;// 批量上传private String fileName;//文件名称private String filePath;// 文件路径private String printName;// 打印机名称public String getPrintName() {return printName;}public void setPrintName(String printName) {this.printName = printName;}public String getFilePath() {return filePath;}public void setFilePath(String filePath) {this.filePath = filePath;}public String getFileName() {return fileName;}public void setFileName(String fileName) {this.fileName = fileName;}public String getImgStr() {return imgStr;}public void setImgStr(String imgStr) {this.imgStr = imgStr;}public String[] getImgListStr() {imgListStr = this.getImgStr().split(",");return imgListStr;}public void setImgListStr(String[] imgListStr) {this.imgListStr = imgListStr;}}

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