java 基于iText的PDF输出（源码）

/** * <br>Created on 2013-8-16 * @author Y.Huang - 黄勇 */ package com.hy.pdf; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.FileReader; import java.io.IOException; import java.io.InputStream; import java.io.Reader; import java.io.StringReader; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.LinkedHashMap; import java.util.List; import java.util.Map; import com.itextpdf.text.BaseColor; import com.itextpdf.text.Document; import com.itextpdf.text.DocumentException; import com.itextpdf.text.Element; import com.itextpdf.text.Font; import com.itextpdf.text.Image; import com.itextpdf.text.Rectangle; import com.itextpdf.text.html.simpleparser.HTMLWorker; import com.itextpdf.text.html.simpleparser.StyleSheet; import com.itextpdf.text.pdf.AcroFields; import com.itextpdf.text.pdf.AcroFields.FieldPosition; import com.itextpdf.text.pdf.BaseFont; import com.itextpdf.text.pdf.PdfContentByte; import com.itextpdf.text.pdf.PdfCopy; import com.itextpdf.text.pdf.PdfImportedPage; import com.itextpdf.text.pdf.PdfReader; import com.itextpdf.text.pdf.PdfStamper; import com.itextpdf.text.pdf.PdfWriter; import com.itextpdf.tool.xml.XMLWorkerFontProvider; import com.itextpdf.tool.xml.XMLWorkerHelper; /** * 组件名称：PDF打印输出组件<br> * 创建时间：2013-8-16 版本:1.0<br> * 更新时间：2013-8-23 版本:1.5<br> * @author Y.Huang - 黄勇 * <h1>功能支持：</h1> * <ul> * <li>在PDF模板指定位置插入文本（包含多行文本显示）</li> * <li>在PDF模板指定位置插入图片，图宽或高超出范围则图片自动按比例缩小到合适大小</li> * <li>在PDF模板指定位置插入html代码，html代码将解析为显示文本及图片---此功能主要为实现 * 图文混排，暂时不支持复杂样式。 * </li> * </ul> * <h1>使用方法</h1> * <ul> * 本类方法addText（*）、addImage（*）、addHtml（*）、print（*）对外开放。 * 其中前三个方法用于用户添加打印数据，最后一个方法用于执行PDF文件的打印 * </ul> * * <h1>本类一依赖包列表:</h1> * <ul> * <li>itext-asian-5.4.3.jar</li> * <li>itextpdf-5.4.3.jar</li> * <li>xmlworker-5.4.3.jar</li> * </ul> */ public class LcmPdfPrinter { public final static String PAGECOUNTKEY="总页数"; public final static String PAGEKEY="页数"; public final static String FP_BG_COLOR="bgcolor"; public final static String FP_TEXT_COLOR="textcolor"; public final static String FP_TEXT_FONT="textfont"; public final static String FP_TEXT_SIZE="textsize"; private float offset=10f; public BaseFont defaultFont; public float defaultFontSize; private Map<String,String> template; private Map<String,List<PDFText>> valuesList; private Map<String,List<PDFImage>> imageList; private Map<String,List<PDFHtml>> htmlList; /** *黑体字 */ public static BaseFont SimHei=null; /** *宋体字 */ public static BaseFont SimSuncss=null; /** *新宋体字 */ public static BaseFont NSimSun=null; static{ try { SimHei=BaseFont.createFont("ext/glaway/mpmplus/pdfprint/fonts/SIMHEI.TTF", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); SimSuncss=BaseFont.createFont("ext/glaway/mpmplus/pdfprint/fonts/SIMSUN.TTC,0", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); NSimSun=BaseFont.createFont("ext/glaway/mpmplus/pdfprint/fonts/SIMSUN.TTC,1", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); } catch (Exception e) { e.printStackTrace(); } } public LcmPdfPrinter() { try { defaultFont= BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED); } catch (Exception e) { System.out.println("默认字体不存在，你需要提供iText的亚洲语言包iTextAsian或者设置你的本地语言"); e.printStackTrace(); } template=new LinkedHashMap<String, String>(); valuesList=new HashMap<String, List<PDFText>>(); imageList=new HashMap<String, List<PDFImage>>(); htmlList=new HashMap<String, List<PDFHtml>>(); } public Rectangle getRectangleInfo(String templName,String key){ Rectangle ret=null; try{ PdfReader reader=new PdfReader(template.get(templName)); AcroFields af=reader.getAcroFields(); List<FieldPosition> fpList=af.getFieldPositions(key); if(fpList==null||fpList.size()==0){ throw new Exception("在模板中未找到指定的文本域:"+key); } ret=fpList.get(0).position; }catch(Exception e){ e.printStackTrace(); } return ret; } /** *为指定模板添加一个文本域数据 */ public void addText(String templName,PDFText value){ if(!valuesList.containsKey(templName)){ valuesList.put(templName, new ArrayList<PDFText>()); } List<PDFText> vals=valuesList.get(templName); vals.add(value); valuesList.put(templName, vals); } public PDFText addText(String templName,String key,String value){ if(!valuesList.containsKey(templName)){ valuesList.put(templName, new ArrayList<PDFText>()); } List<PDFText> vals=valuesList.get(templName); PDFText v=new PDFText(key, value); vals.add(v); return v; } public PDFImage addImage(String templName,Image image){ return addImage(templName,null,image); } public PDFImage addImage(String templName,String imageFileName){ return addImage(templName,null,imageFileName); } public PDFImage addImage(String templName,String key,Image image){ if (!imageList.containsKey(templName)) { imageList.put(templName, new ArrayList<PDFImage>()); } List<PDFImage> vals = imageList.get(templName); PDFImage img = new PDFImage(key,image); vals.add(img); return img; } public PDFImage addImage(String templName,String key,String imageFileName){ try { Image img = Image.getInstance(imageFileName); return addImage(templName,key, img); } catch (Exception e) { System.out.println(e.getMessage()); return null; } } public PDFHtml addHtml(String templName,String key,String html){ return addHtml(templName, key, new StringReader(html)); } public PDFHtml addHtml(String templName,String key,File file) throws Exception{ return addHtml(templName, key, new FileReader(file)); } public PDFHtml addHtml(String templName,String key,Reader reader){ if (!htmlList.containsKey(templName)) { htmlList.put(templName, new ArrayList<PDFHtml>()); } List<PDFHtml> vals = htmlList.get(templName); PDFHtml html = new PDFHtml(key,reader); vals.add(html); return html; } /** *添加一个模板页 */ public String addTempl(String templName,String templPath){ template.put(templName, templPath); return templName; } public void removeTempl(String templName){ template.remove(templName); } /** *<h1>将输出流写入指定的路径的文件中</h1> *返回 File 生成的新的PDF文件 */ public File print(String targetFileName)throws Exception{ File ret=new File(targetFileName); FileOutputStream fos=new FileOutputStream(ret); ByteArrayOutputStream bos=print(); bos.writeTo(fos); bos.close(); fos.close(); return ret; } /** *<h1>合并