java中生成pdf文件需要用到java文件：iText 5.0.6.jar文件
只下載iText5.0.6.jar文件是不能寫入中文到pdf文件,同時需要iTextAsian.jar
但是我們在使用這2個jar文件的時候仍然發現一個問題，只能設置windos自帶的文字庫才能把中文寫入：
例子：BaseFont baseFont = BaseFont.createFont("C:/Windows/Fonts/SIMYOU.TTF", BaseFont.IDENTITY_H,BaseFont.NOT_EMBEDDED);
雖然上面的例子解決了中文問題，但是並沒有世界解決問題，從路徑就可以看出，很明顯，這樣的寫法只能在windows下運行有用。
當我們改成文字庫的時候，還是會報錯：BaseFont baseFont = BaseFont.createFont("STSong-Light",BaseFont.IDENTITY_H,BaseFont.NOT_EMBEDDED);
找了好久，解壓了iTextAsian.jar文件才發現，原來是iText5.0.6.jar文件包路徑不對應。
後來找了新的jar文件替換掉了原先的版本，中文問題解決。
新jar文件下載路徑：iText1.3.jar和iTextAsian.jar
pdf下載事例代碼：
private void downloadPDF(HttpServletResponse response, String merno,
String filename, String date, String z_mernoshh,
String z_daterq, int z_transcnt, double z_transamt,
double z_transfee, int z_tkcnt, double z_tkamt, double z_tkfee,
double z_remark, List<WxdzType> wxdzlist,List<WxdzInf> list){
Document doc = new Document(PageSize.A4.rotate());// 實例化文檔對象; PageSize.A4.rotate();橫向
ByteArrayOutputStream baos = null;
String filenamepdf = filename+".pdf";
try {
PdfWriter.getInstance(doc, new FileOutputStream(
"HelloWorld.pdf"));
BaseFont bfChinese = BaseFont.createFont("STSongStd-Light",
"UniGB-UCS2-H", false);
Font font = new Font(bfChinese, 10, Font.NORMAL);
baos = new ByteArrayOutputStream();
@SuppressWarnings("unused")
PdfWriter writer = PdfWriter.getInstance(doc, baos);// 創建
@SuppressWarnings("unused")
byte[] bt = baos.toByteArray();
doc.open();//打開文檔對象
Paragraph p;
p = new Paragraph(filename+"\n", font);
p.setAlignment(1);
doc.add(p);
p=new Paragraph("===========================================================================================\n",font);
p.setAlignment(1);
doc.add(p);
if(merno.equals("No")){
merno="全部";
p=new Paragraph("商戶名稱：" + merno + " 製表日期："+date+"\n",font);
}else{
p=new Paragraph("商戶名稱：" + merno + " 製表日期："+date+"\n",font);
}
doc.add(p);
// doc.add(new Paragraph(" \n",font));------爲了空行
p=new Paragraph(" \n");
doc.add(p);
PdfPTable table = createPDF(font,wxdzlist,list,z_mernoshh,
z_daterq,z_transcnt,z_transamt,
z_transfee,z_tkcnt,z_tkamt,z_tkfee,
z_remark);//創建表格並寫入數據
doc.add(table);
p=new Paragraph(" \n");
doc.add(p);
doc.add(new Paragraph("會計： 複覈： 製表：",font));
} catch (DocumentException de) {
System.err.println(de.getMessage());
} catch (IOException ioe) {
System.err.println(ioe.getMessage());
}
// 關閉打開的文檔
doc.close();
ServletOutputStream out;
try {
out = response.getOutputStream();
response.setContentType("application/pdf");
response.addHeader("Content-Disposition", "attachment;filename="
+ java.net.URLEncoder.encode(filenamepdf, "utf-8"));
response.setContentLength(baos.size());
baos.writeTo(out);
out.flush();
out.close();
baos.close();
} catch (IOException e) {
e.printStackTrace();
}
}private PdfPTable createPDF(Font font, List<WxdzType> wxdzlist,List<WxdzInf> list,String z_mernoshh,
String z_daterq, int z_transcnt, double z_transamt,
double z_transfee, int z_tkcnt, double z_tkamt, double z_tkfee,
double z_remark) throws DocumentException,IOException{
PdfPTable table = new PdfPTable(10);// 創建一個多少列的表格
table.getDefaultCell().setMinimumHeight(50); // 設置默認的表格高度
int[] widths = new int[10];
for (int i = 0; i < 10; i++) widths[i] = 1;
widths[0] = 2;
// widths[1] = 2;
// widths[2] = 1;
// widths[date.size()-1] =2;
table.setWidths(widths);// 設置所有寬度
table.setWidthPercentage(100f);
// PdfPCell cell;
// Phrase ph;
// cell = new PdfPCell(ph);
// cell.setColspan(date.size());//合併列
String[] tableName=new String[]{"商戶名稱","交易類型","交易日期","交易筆數","交易金額","手續費","退款筆數","退款金額","退款手續費","劃賬金額"};
for(int i=0;i<tableName.length;i++){
Paragraph element = new Paragraph(tableName[i], font);
PdfPCell cell = new PdfPCell(element);
cell.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(cell);
}
for(int i=0;i<wxdzlist.size();i++){
List<WxdzInf> wxd = wxdzlist.get(i).getList();
for(int j=0;j<wxd.size();j++){
Paragraph element = new Paragraph(wxd.get(j).getMerName(),font);
PdfPCell cell1 = new PdfPCell(element);
cell1.setHorizontalAlignment(Element.ALIGN_LEFT);
table.addCell(cell1);
Paragraph element_1 = new Paragraph(wxd.get(j).getTranstype(),font);
PdfPCell cell_1 = new PdfPCell(element_1);
cell_1.setHorizontalAlignment(Element.ALIGN_LEFT);
table.addCell(cell_1);
Paragraph element_2 = new Paragraph(wxd.get(j).getDate(),font);
PdfPCell cell_2 = new PdfPCell(element_2);
cell_2.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(cell_2);
Paragraph element_3 = new Paragraph(wxd.get(j).getTranscnt()+"",font);//交易筆數
PdfPCell cell_3 = new PdfPCell(element_3);
cell_3.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_3);
Paragraph element_4 = new Paragraph(ChangeNumPoint(String.valueOf(wxd.get(j).getTransamt())),font);
PdfPCell cell_4 = new PdfPCell(element_4);
cell_4.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_4);
Paragraph element_5 = new Paragraph(ChangeNumPoint(String.valueOf(wxd.get(j).getTransfee())),font);
PdfPCell cell_5 = new PdfPCell(element_5);
cell_5.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_5);
Paragraph element_6 = new Paragraph(wxd.get(j).getTkcnt()+"",font);//退款筆數
PdfPCell cell_6 = new PdfPCell(element_6);
cell_6.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_6);
Paragraph element_7 = new Paragraph(ChangeNumPoint(String.valueOf(wxd.get(j).getTkamt())),font);
PdfPCell cell_7 = new PdfPCell(element_7);
cell_7.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_7);
Paragraph element_8 = new Paragraph(ChangeNumPoint(String.valueOf(wxd.get(j).getTkfee())),font);
PdfPCell cell_8 = new PdfPCell(element_8);
cell_8.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_8);
Paragraph element_9 = new Paragraph(ChangeNumPoint(String.valueOf(wxd.get(j).getRemark())),font);
PdfPCell cell_9 = new PdfPCell(element_9);
cell_9.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_9);
}
//小計
Paragraph element_x1 = new Paragraph(wxdzlist.get(i).getMerno(),font);
PdfPCell cell_x1 = new PdfPCell(element_x1);
cell_x1.setHorizontalAlignment(Element.ALIGN_CENTER);
cell_x1.setColspan(2);//合併2列
table.addCell(cell_x1);
Paragraph element_x2 = new Paragraph(wxdzlist.get(i).getDate(),font);
PdfPCell cell_x2 = new PdfPCell(element_x2);
cell_x2.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(cell_x2);
Paragraph element_x3 = new Paragraph(wxdzlist.get(i).getTranscnt()+"",font);//交易筆數
PdfPCell cell_x3 = new PdfPCell(element_x3);
cell_x3.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_x3);
Paragraph element_x4 = new Paragraph(ChangeNumPoint(String.valueOf(wxdzlist.get(i).getTransamt())),font);
PdfPCell cell_x4 = new PdfPCell(element_x4);
cell_x4.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_x4);
Paragraph element_x5 = new Paragraph(ChangeNumPoint(String.valueOf(wxdzlist.get(i).getTransfee())),font);
PdfPCell cell_x5 = new PdfPCell(element_x5);
cell_x5.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_x5);
Paragraph element_x6 = new Paragraph(wxdzlist.get(i).getTkcnt()+"",font);//退款筆數
PdfPCell cell_x6 = new PdfPCell(element_x6);
cell_x6.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_x6);
Paragraph element_x7 = new Paragraph(ChangeNumPoint(String.valueOf(wxdzlist.get(i).getTkamt())),font);
PdfPCell cell_x7 = new PdfPCell(element_x7);
cell_x7.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_x7);
Paragraph element_x8 = new Paragraph(ChangeNumPoint(String.valueOf(wxdzlist.get(i).getTkfee())),font);
PdfPCell cell_x8 = new PdfPCell(element_x8);
cell_x8.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_x8);
Paragraph element_x9 = new Paragraph(ChangeNumPoint(String.valueOf(wxdzlist.get(i).getRemark())),font);
PdfPCell cell_x9 = new PdfPCell(element_x9);
cell_x9.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_x9);//----------------------------------------------------------------------------------------------------------------------------------------------------------
}
//合計
/*String z_mernoshh= "合計";//合計
String z_daterq="";// 交易日期
int z_transcnt=0;// 交易筆數
double z_transamt=0;// 交易金額
double =0;// 手續費
int =0;// 退款筆數
double =0;// 退款金額
double =0;// 退款手續費
double =0;// 劃賬金額
*/ Paragraph element_x1 = new Paragraph(z_mernoshh,font);
PdfPCell cell_x1 = new PdfPCell(element_x1);
cell_x1.setHorizontalAlignment(Element.ALIGN_CENTER);
cell_x1.setColspan(2);//合併2列
table.addCell(cell_x1);
Paragraph element_x2 = new Paragraph(z_daterq,font);
PdfPCell cell_x2 = new PdfPCell(element_x2);
cell_x2.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(cell_x2);
Paragraph element_x3 = new Paragraph(z_transcnt+"",font);//交易筆數
PdfPCell cell_x3 = new PdfPCell(element_x3);
cell_x3.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_x3);
Paragraph element_x4 = new Paragraph(ChangeNumPoint(String.valueOf(z_transamt)),font);
PdfPCell cell_x4 = new PdfPCell(element_x4);
cell_x4.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_x4);
Paragraph element_x5 = new Paragraph(ChangeNumPoint(String.valueOf(z_transfee)),font);
PdfPCell cell_x5 = new PdfPCell(element_x5);
cell_x5.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_x5);
Paragraph element_x6 = new Paragraph(z_tkcnt+"",font);//退款筆數
PdfPCell cell_x6 = new PdfPCell(element_x6);
cell_x6.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_x6);
Paragraph element_x7 = new Paragraph(ChangeNumPoint(String.valueOf(z_tkamt)),font);
PdfPCell cell_x7 = new PdfPCell(element_x7);
cell_x7.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_x7);
Paragraph element_x8 = new Paragraph(ChangeNumPoint(String.valueOf(z_tkfee)),font);
PdfPCell cell_x8 = new PdfPCell(element_x8);
cell_x8.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_x8);
Paragraph element_x9 = new Paragraph(ChangeNumPoint(String.valueOf(z_remark)),font);
PdfPCell cell_x9 = new PdfPCell(element_x9);
cell_x9.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell_x9);
return table;
}
