批量打印實現
批量打印的難點：html
一、文本顯示的樣式；java
二、不一樣瀏覽器打印的兼容性linux
三、帳單個數上萬時，服務端的性能（起碼要保證不能把內存消耗完，致使內存溢出）。數據庫
對應的處理方案：apache
一、打印樣式經過html顯示；瀏覽器
二、採用pd4ml將html轉化爲pdf，處理不一樣瀏覽器打印兼容的問題；緩存
三、每次處理的帳單個數，根據服務器當前的內存使用狀況，計算其合適的批量處理大小；服務器
四、利用pdfbox，合併html轉化後的pdf。app
流程：dom
一、從數據庫查出數據，並組裝成單個帳單；每30個帳單寫入一次pdf；
二、將全部的小的pdf合成一個單獨的pdf；
三、將單獨的pdf在網頁上顯示
效果圖：
代碼
（一）批量打印工具類
package com.hyn.util;
import java.awt.Insets;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.StringReader;
import java.net.URLEncoder;
import java.security.InvalidParameterException;
import java.util.List;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.io.FileUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.pdfbox.io.MemoryUsageSetting;
import org.apache.pdfbox.multipdf.PDFMergerUtility;
import org.zefer.pd4ml.PD4Constants;
import org.zefer.pd4ml.PD4ML;
/**
* html轉pdf工具類
*
* @author liyulin
* @version 1.0 2016年12月16日 下午2:15:29
*/
public final class Html2PdfUtil {
private final static Log logger = LogFactory.getLog(Html2PdfUtil.class);
public final static String getHtmlHead(){
StringBuilder html = new StringBuilder();
html.append("<html>")
.append(" <head>")
.append(" <meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"/>")
.append(" <style>")
.append(" body{font-family:SongTi_GB2312;height: auto;color:#000000;}")
.append(" .mtop10 li{text-align: left;}")
.append(" .t_right li{text-align:right !important;margin-right: 3em;}")
.append(" .page_break{page-break-after: always;}")
.append(" .tablePrint td {padding-top:50px; font-size: 18px;}")
.append(" .tablePrint h2 {color: #000000;}")
.append(" .bordered{border-bottom: 1px solid #000000 !important;border: solid #000 1px;}")
.append(" .bordered td {height: 22px; border-left: 1px solid #000; border-top: 1px solid #000; padding: 10px !important; text-align: left;background-color:#ffffff;}")
.append(" .trbg{color: #dd4929;background-color: #ffffff;}")
.append(" .info{margin: 25px 20px 0;}")
.append(" .bold{font-weight: bold !important;}")
.append(" table.info-list-02 {width: 100%;background: #eeeeee;border-radius: 3px;border-bottom: 1px solid #dddfe1;font-size: 12px !important;}")
.append(" .t_center {text-align: center !important;margin:0px;}")
.append(" .t_right {text-align: right !important;}")
.append(" .f14 {font-size: 14px !important;}")
.append(" table.info-list {width: 100%;font-size: 12px;}")
.append(" table.tableBordered {border-spacing: 0;width: 100%;}")
.append(" .tableBordered {border: solid #666 1px;border-top: none;}")
.append(" table.info-list tr td {padding: 5px 2px;}")
.append(" .tableBordered td, .tableBordered th {height: 30px;border-left: 1px solid #666;border-top: 1px solid #666;padding: 10px;text-align: center;}")
.append(" .mtop10 {margin-top: 10px !important;}")
.append(" ul, li {list-style: none;margin: 0px;padding: 0px;}")
.append(" </style>")
.append(" </head>")
.append(" <body>")
.append(" <font face=\"SongTi_GB2312\">");
return html.toString();
}
/**
* 組裝html
*
* @param template
* @return
*/
public final static String getHtml(String template){
StringBuilder html = new StringBuilder();
html.append(getHtmlHead())
.append(template)
.append(getHtmlTail());
return html.toString();
}
/**
* 獲取html尾部
*
* @param template
* @return
*/
public final static String getHtmlTail(){
StringBuilder html = new StringBuilder();
html.append(" </font>")
.append(" </body>")
.append("</html>");
return html.toString();
}
/**
* 將html轉pdf（此方式在Sring對象過大的狀況下可能致使heap溢出）
*
* @param response
* @param template
* @throws InvalidParameterException
* @throws IOException
*/
@Deprecated
public final static void html2pdf(HttpServletResponse response, String template) throws InvalidParameterException, IOException{
response.setContentType("application/pdf;charset=UTF-8");
response.setHeader("Content-Disposition", "inline;filename=" + URLEncoder.encode(PrintConfig.PDF_NAME, "UTF-8"));
ServletOutputStream outputStream = response.getOutputStream();
PD4ML pd4ml = new PD4ML();
pd4ml.setPageSize(PD4Constants.A4);
pd4ml.setHtmlWidth(1073);
pd4ml.setPageInsets(new Insets(15, 10, 10, 10));
pd4ml.enableDebugInfo();
pd4ml.monitorProgress(new ProgressMeter());
pd4ml.useTTF(PrintConfig.FONT_PACKAGE, true);
pd4ml.setDefaultTTFs("SongTi_GB2312", "SongTi_GB2312", "SongTi_GB2312");
String html = getHtml(template);
pd4ml.render(new StringReader(html), outputStream);
outputStream.close();
}
/**
* 瀏覽器打開方式
*
* @param isAttachment
* @return
*/
private final static String getOpenType(boolean isAttachment){
if(isAttachment){
return PrintConfig.ATTACHMENT;
} else {
return PrintConfig.INLINE;
}
}
//=======================================================
/**
* 將html寫入pdf
*
* @param html
* @param outFile
* @throws InvalidParameterException
* @throws IOException
*/
public final static void writePdf(String html, File outFile) throws InvalidParameterException, IOException{
PD4ML pd4ml = new PD4ML();
pd4ml.setPageSize(PD4Constants.A4);
pd4ml.setHtmlWidth(1073);
pd4ml.setPageInsets(new Insets(15, 10, 10, 10));
pd4ml.enableDebugInfo();
pd4ml.useTTF(PrintConfig.FONT_PACKAGE, true);
pd4ml.setDefaultTTFs("SongTi_GB2312", "SongTi_GB2312", "SongTi_GB2312");
pd4ml.enableImgSplit(false);
pd4ml.monitorProgress(new ProgressMeter());
OutputStream outputStream = FileUtils.openOutputStream(outFile);
pd4ml.render(new StringReader(html), outputStream);
outputStream.close();
}
private final static void mergePdf(List<File> pdfs, File mergedPdf) throws IOException{
PDFMergerUtility mergePdf = new PDFMergerUtility();
for(File pdf:pdfs){
mergePdf.addSource(pdf);
}
mergePdf.setDestinationFileName(mergedPdf.getAbsolutePath());
mergePdf.mergeDocuments(MemoryUsageSetting.setupTempFileOnly());
}
private final static void showPdf(HttpServletResponse response, File pdf, boolean isAttachment) throws IOException{
// 設置response的Header
response.setContentType("application/pdf;charset=UTF-8");
response.setHeader("Content-Disposition", getOpenType(isAttachment)+";filename=" + URLEncoder.encode(PrintConfig.PDF_NAME, PrintConfig.UTF_8));
response.setContentLength((int) pdf.length());
// 瀏覽器緩存20分鐘
response.setHeader("Cache-Control", "max-age="+PrintConfig.CLIENT_PDF_CACHE_20MINUTES);
ServletOutputStream outputStream = response.getOutputStream();
FileInputStream fis = FileUtils.openInputStream(pdf);
byte[] buffer = new byte[PrintConfig.BUFFERED_SIZE_10M];
while(fis.read(buffer, 0, PrintConfig.BUFFERED_SIZE_10M) != -1){
outputStream.write(buffer, 0, PrintConfig.BUFFERED_SIZE_10M);
}
outputStream.flush();
outputStream.close();
fis.close();
}
/**
* 合併，並在網頁顯示PDF
*
* @param tmpBaseDirUrl 臨時文件夾
* @param htmlFiles 全部生成的html
* @param response
* @throws InvalidParameterException
* @throws IOException
*/
public final static void showMergePDF(String tmpBaseDirUrl, List<File> pdfFiles, HttpServletResponse response) throws InvalidParameterException, IOException{
// 二、pdf合成
logger.debug("2.一、pdf合成:"+tmpBaseDirUrl);
File mergedPdf = new File(tmpBaseDirUrl + File.separator + PrintConfig.PDF_NAME);
Html2PdfUtil.mergePdf(pdfFiles, mergedPdf);
// 三、瀏覽器文件流輸出
logger.debug("2.二、瀏覽器文件流輸出:"+tmpBaseDirUrl);
Html2PdfUtil.showPdf(response, mergedPdf, false);
// 四、刪除全部文件
logger.debug("2.三、刪除全部文件:"+tmpBaseDirUrl);
FileUtils.deleteDirectory(new File(tmpBaseDirUrl));
}
}
（二）進度類
package com.hyn.util;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.zefer.pd4ml.PD4ProgressListener;
/**
* pdf處理進度
*
* @author liyulin
* @version 1.0 2016年12月15日 下午1:52:53
*/
public final class ProgressMeter implements PD4ProgressListener {
private Log logger = LogFactory.getLog(getClass());
public void progressUpdate(int messageID, int progress, String note, long msec) {
String tick = String.format("spend:%7d", msec);
String progressString = String.format("%3d", progress);
String step = "";
switch (messageID) {
case CONVERSION_BEGIN:
step = "conversion begin";
break;
case HTML_PARSED:
step = "html parsed";
break;
case DOC_TREE_BUILT:
step = "document tree structure built";
break;
case HTML_LAYOUT_IN_PROGRESS:
step = "layouting...";
break;
case HTML_LAYOUT_DONE:
step = "layout done";
break;
case TOC_GENERATED:
step = "TOC generated";
break;
case DOC_OUTPUT_IN_PROGRESS:
step = "generating PDF...";
break;
case NEW_SRC_DOC_BEGIN:
step = "proceed to new source document";
break;
case CONVERSION_END:
step = "done.";
break;
}
logger.debug(tick + " " + progressString + "% " + step + " " + note);;
}
}
（三）常量類
package com.hyn.util;
/**
* 打印配置
*
* @author liyulin
* @version 1.0 2016年12月15日 下午6:55:48
*/
public final class PrintConfig {
/** 打印時的臨時文件夾 */
public final static String BASE_DIR_URL = System.getProperty("java.io.tmpdir");
/** 網頁顯示 */
public final static String INLINE = "inline";
/** 下載 */
public final static String ATTACHMENT = "attachment";
/** utf-8編碼 */
public final static String UTF_8 = "UTF-8";
/** 緩存大小10M */
public final static int BUFFERED_SIZE_10M = 1024 * 1024 * 10;
/** 帳單一次性寫入的大小 */
public final static int WRITE_BILL_BUFFERED_SIZE = 30;
/** SONGTI.TTF存放路徑 */
public final static String FONT_PACKAGE = "java:com/hyn/fonts";
/** pdf文件名稱 */
public final static String PDF_NAME = "批量打印.pdf";
/** 瀏覽器pdf緩存時間20分鐘 */
public final static long CLIENT_PDF_CACHE_20MINUTES = 60 * 20;
}
（四）servlet
package com.hyn.servlet;
import java.io.File;
import java.io.IOException;
import java.security.InvalidParameterException;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.hyn.util.Html2PdfUtil;
import com.hyn.util.PrintConfig;
/**
* 批量打印servlet
*
* @author liyulin
* @version 1.0 2016年12月16日 下午2:18:48
*/
@WebServlet("/html2PdfServlet")
public class Html2PdfServlet extends HttpServlet {
private final static long serialVersionUID = 1L;
private final static Log logger = LogFactory.getLog(Html2PdfServlet.class);
private final static String billTemplate = "<div class=\"info posrelative page_break\"><div><div class=\"overflow\" style=\"height: 60px;\"><img style=\"max-width: 200px; max-height: 60px;height: 60px;border:0;\" src=\"http://cdn.linlile.com.cn:8086/propertyCommpany/payBillPrintCompanyIcon_5027938.png\" onerror=\"this.parentNode.parentNode.remove();\"/></div><h3 class=\"t_center\" style=\"font-size: 24px;\"><u>A小區</u>（小區） <u>2016</u>年 <u>11</u>月份<u>物業費</u>（帳單）收費通知單</h3><table class=\"info-list mtop10 f14\" border=\"0\"><tr><td colspan=\"3\">房號：1-101</td><td class=\"t_right\" colspan=\"3\" style=\"padding-right: 6em;\">戶名：</td></tr></table><table class=\"tableBordered\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\"><thead><tr><th width=\"25%\">項目</th><th>__月讀數</th><th>__月讀數</th><th width=\"22%\">面積（㎡）/ 用量（m³、度）</th><th width=\"100\">標準單價（元）</th><th width=\"120\">應交合計</th></tr></thead> <tr> <td>管理費</td> <td> </td> <td> </td> <td> </td> <td> </td> <td>170.00</td></tr><tr> <td>主體金</td> <td> </td> <td> </td> <td> </td> <td> </td> <td>25.50</td></tr><tr> <td>合計</td> <td> </td> <td> </td> <td> </td> <td> </td> <td>195.50</td></tr><tr><td colspan=\"6\"><ul class=\"mtop10\"><li>一、根據《半山半海花園物業服務收費標準》所示，物業費標準：3.8元/㎡/月；水費標準：按市政階梯標準收費。</li><li>二、本次收取<u>2016</u>年<u>11</u>月<u>1</u>日起至<u>2016</u>年<u>11</u>月<u>30</u>日物業費用； <u>2016</u>年<u>09</u>月 <u>11</u>日起至<u>2016</u>年<u>10</u>月 <u>10</u>日產生的水費；費用合計<u>195.50</u>。</li><li>三、請於<u>1970</u>年<u>01</u>月<u>15</u>日前至樓村花園物業服務中心財務室繳納物業費 /水電費用。</li><li>四、若有疑問，可隨時致電諮詢：0755-27118338。</li></ul> </td></tr></table> <ul class=\"mtop10 t_right\"><li>小曾06物業</li><li><u>2016</u>年<u>12</u>月<u>12</u>日</li></ul></div> </div>";
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// 一、組裝html，並生成pdf
String tmpBaseDirUrl = "";
// linux環境上臨時目錄url後面可能沒有File.separator
if(PrintConfig.BASE_DIR_URL.endsWith(File.separator)){
tmpBaseDirUrl = PrintConfig.BASE_DIR_URL + UUID.randomUUID().toString();
} else {
tmpBaseDirUrl = PrintConfig.BASE_DIR_URL + File.separator + UUID.randomUUID().toString();
}
logger.debug("一、組裝html，並生成pdf:"+tmpBaseDirUrl);
System.err.println(tmpBaseDirUrl);
List<File> pdfFiles = generatePDFForBills(tmpBaseDirUrl);
// 二、合併，並在網頁顯示PDF
logger.debug("二、合併，並在網頁顯示PDF:"+tmpBaseDirUrl);
Html2PdfUtil.showMergePDF(tmpBaseDirUrl, pdfFiles, response);
}
/**
* 組裝html，並生成pdf
*
* @param tmpBaseDirUrl
* @return
* @throws IOException
* @throws InvalidParameterException
*/
private List<File> generatePDFForBills(String tmpBaseDirUrl) throws InvalidParameterException, IOException{
List<File> pdfFiles = new ArrayList<File>();
StringBuilder templates = new StringBuilder();
int billSize = 102;
for(int i=0; i<billSize; i++){
templates.append(billTemplate);
if (isNeedWrite(i, billSize)) {
String fileUrl = tmpBaseDirUrl +File.separator+pdfFiles.size()+".pdf";
File pdfFile = new File(fileUrl);
String html = Html2PdfUtil.getHtml(templates.toString());
Html2PdfUtil.writePdf(html, pdfFile);
pdfFiles.add(pdfFile);
templates.delete(0, templates.length());
}
}
return pdfFiles;
}
/**
* 判斷是否須要寫入
*
* @param index
* @param size
* @return
*/
private boolean isNeedWrite(int index, int size){
return (index % PrintConfig.WRITE_BILL_BUFFERED_SIZE == 0) || (index % PrintConfig.WRITE_BILL_BUFFERED_SIZE != 0 && index == size - 1);
}
}
下載
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