[JAVA_其它]利用itext來顯示pdf－程式開發學習之路

最近作者比較有點空閒的時間，特別花了一點時間研究一下如何用java來寫入pdf，並用他來做一些基本的呈現，以及顯示中文

首先，先引入 itext-5.2.0.jar，如果你需要顯示中文化的話，需要引入itext-asian-5.2.0.jar

public class Emp {



private String empNo;

private String empName;

private String birthday;

private String year;

private String tel;

//以下為get,set

}

import java.io.FileOutputStream;

import java.io.IOException;

import java.util.ArrayList;



import com.itextpdf.text.Anchor;

import com.itextpdf.text.BaseColor;

import com.itextpdf.text.Chapter;

import com.itextpdf.text.Chunk;

import com.itextpdf.text.Document;

import com.itextpdf.text.DocumentException;

import com.itextpdf.text.Element;

import com.itextpdf.text.Font;

import com.itextpdf.text.FontFactory;

import com.itextpdf.text.List;

import com.itextpdf.text.ListItem;

import com.itextpdf.text.PageSize;

import com.itextpdf.text.Paragraph;

import com.itextpdf.text.Phrase;

import com.itextpdf.text.Section;

import com.itextpdf.text.pdf.BaseFont;

import com.itextpdf.text.pdf.PdfPCell;

import com.itextpdf.text.pdf.PdfPTable;

import com.itextpdf.text.pdf.PdfWriter;



public class ItxtSample {



//產生中文字型

private static Font fontRedCN, fontBlueCN, fontBlueSmallCN, fontBlackSmallCN;

// 產生PDF路徑

private static final String fileName = "C:/ItextSample.pdf";



private static String empTitle[] = {"員工編號", "姓名", "生日", "電話", "年齡"};



// 產生字型,字體大小

private static final Font smallFont = new Font(Font.FontFamily.TIMES_ROMAN, 18, Font.BOLD);



private static Font catFont = new Font(Font.FontFamily.TIMES_ROMAN, 12, Font.BOLD);



private static Font subFont = new Font(Font.FontFamily.TIMES_ROMAN, 16, Font.BOLD);



public static void main(String[] args) throws DocumentException {

//建立假資料

java.util.List<Emp> list = FalseInformation();



try {

// 產生中文字型,字體大小

BaseFont bfChinese = BaseFont.createFont("STSong-Light","UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);

fontRedCN = new Font(bfChinese, 18, Font.BOLD, new BaseColor(255, 0, 0));

fontBlueCN = new Font(bfChinese, 18, Font.BOLD, new BaseColor(0, 0, 255));

fontBlueSmallCN = new Font(bfChinese, 12, Font.BOLD, new BaseColor(0, 255, 0));

fontBlackSmallCN = new Font(bfChinese, 12, Font.BOLD, new BaseColor(0, 0, 0));



// 產生一個A4大小的PDF檔案

Document document = new Document(PageSize.A4);



PdfWriter.getInstance(document, new FileOutputStream(fileName));



document.open();



// PDF 文件內容部分

addMetaDataTitle(document);

// PDF 表頭部分

addTitlePage(document);

// PDF 內容部分

addContent(document, list);



document.close();



} catch (DocumentException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}



/**

 * 假資料

 * @return

 */

private static java.util.List<Emp> FalseInformation() {

java.util.List<Emp> list = new ArrayList<Emp>();

Emp emp = new Emp();

emp.setEmpNo("000001");

emp.setEmpName("王曉明");

emp.setTel("031234567");

emp.setYear("25");

emp.setBirthday("1988/06/06");

list.add(emp);

Emp emp2 = new Emp();

emp2.setEmpNo("000002");

emp2.setEmpName("黃小強");

emp2.setTel("037654321");

emp2.setYear("52");

emp2.setBirthday("1980/12/12");

list.add(emp2);

return list;

}



/**

 * PDF 內容部分

 * @param document

 * @param list

 * @throws DocumentException

 */

private static void addContent(Document document, java.util.List<Emp> list) throws DocumentException {



//建立標題一

Anchor anchor = new Anchor("標題一", fontRedCN);

anchor.setName("First Chapter");



Chapter catPart = new Chapter(new Paragraph(anchor), 1);

Paragraph subPara = new Paragraph("Subcategory 1", subFont);



Section subCatPart = catPart.addSection(subPara);

subCatPart.add(new Paragraph("Hello World"));



Paragraph paragraph = new Paragraph();

subCatPart.add(paragraph);



addEmptyLine(paragraph, 10);



subPara = new Paragraph("Subcategory 2", subFont);

subCatPart = catPart.addSection(subPara);

subCatPart.add(new Paragraph("Paragraph 1"));

subCatPart.add(new Paragraph("Paragraph 2"));

subCatPart.add(new Paragraph("Paragraph 3"));

document.add(catPart);



//建立標題二

anchor = new Anchor("標題二", fontRedCN);

anchor.setName("Second Chapter");



catPart = new Chapter(new Paragraph(anchor), 2);

subPara = new Paragraph("Subcategory 2", subFont);



Section subCatPart2 = catPart.addSection(subPara);



// Add a list

createList(subCatPart2);

// Add a table

createTable(subCatPart2);

// Add a table2

createTable2(subCatPart2, list);



document.add(catPart);



}



/**

 * 建立表格2

 * @param subCatPart2

 * @param list

 */

private static void createTable2(Section subCatPart2, java.util.List<Emp> list) {



PdfPTable table = new PdfPTable(5);

PdfPCell cell = new PdfPCell(new Paragraph("員工基本資料", fontBlueCN));

//字體內容至中

cell.setHorizontalAlignment(Element.ALIGN_CENTER);

// 背景顏色

cell.setBackgroundColor(new BaseColor(0, 255, 0));

// 外框顏色

cell.setBorderColor(new BaseColor(255, 0, 0));

//合併儲存格

cell.setColspan(5);



table.addCell(cell);



for(String title : empTitle ){

PdfPCell cell1 = new PdfPCell(new Paragraph( title, fontBlueSmallCN));

cell1.setHorizontalAlignment(Element.ALIGN_CENTER);

table.addCell(cell1);

}



if( list != null && !list.isEmpty() ){

for(Emp emp : list ){

PdfPCell cell1 = new PdfPCell(new Paragraph( emp.getEmpNo(), catFont));

cell1.setHorizontalAlignment(Element.ALIGN_CENTER);

table.addCell(cell1);

cell1 = new PdfPCell(new Paragraph( emp.getEmpName(), fontBlackSmallCN));

cell1.setHorizontalAlignment(Element.ALIGN_CENTER);

table.addCell(cell1);

cell1 = new PdfPCell(new Paragraph( emp.getBirthday(), catFont));

cell1.setHorizontalAlignment(Element.ALIGN_CENTER);

table.addCell(cell1);

cell1 = new PdfPCell(new Paragraph( emp.getTel(), catFont));

cell1.setHorizontalAlignment(Element.ALIGN_CENTER);

table.addCell(cell1);

cell1 = new PdfPCell(new Paragraph( emp.getYear(), catFont));

cell1.setHorizontalAlignment(Element.ALIGN_CENTER);

table.addCell(cell1);

}

}

subCatPart2.add(table);

}



/**

 * 建立表格

 * @param subCatPart

 */

private static void createTable(Section subCatPart2) {

PdfPTable table = new PdfPTable(3);

//表格與上排字體間隙

  table.setSpacingBefore(5);

  //表格與下排字體間隙

  table.setSpacingAfter(5);

       

PdfPCell c1 = new PdfPCell(new Phrase("Table Header 1"));

//字體至中

c1.setHorizontalAlignment(Element.ALIGN_CENTER);

table.addCell(c1);



c1 = new PdfPCell(new Phrase("Table Header 2"));

c1.setHorizontalAlignment(Element.ALIGN_LEFT);

table.addCell(c1);



c1 = new PdfPCell(new Phrase("Table Header 3"));

c1.setHorizontalAlignment(Element.ALIGN_RIGHT);

table.addCell(c1);

table.setHeaderRows(1);



table.addCell("1.0");

table.addCell("1.1");

table.addCell("1.2");

table.addCell("2.1");

table.addCell("2.2");

table.addCell("2.3");



subCatPart2.add(table);



}



/**

 * 增加list

 * @param subCatPart

 */

private static void createList(Section subCatPart) {

List list = new List(true, false, 10);

//list.add(new ListItem("標題二", fontRedCN));

list.add(new ListItem("First point"));

list.add(new ListItem("Second point"));

list.add(new ListItem("Third point"));

subCatPart.add(list);

}



/**

 * 表頭部分

 * @param document

 * @throws DocumentException

 */

private static void addTitlePage(Document document)throws DocumentException {



Paragraph preface = new Paragraph("This is a paragraph", 

                  FontFactory.getFont(FontFactory.HELVETICA, 16, Font.BOLDITALIC,new BaseColor(0, 0, 255)));



//換行

addEmptyLine(preface, 2);



preface.add(new Paragraph("顯示中文", fontRedCN));



addEmptyLine(preface, 2);



preface.add(new Paragraph(addBlank(3) + "顯示中文", fontRedCN));



addEmptyLine(preface, 8);



preface.add(new Paragraph("This document is a preliminary version and not subject to your li cense agreement or any other agreement with vogella.com ;-).", smallFont));



addEmptyLine(preface, 4);



document.add(preface);



Phrase phrase0 = new Phrase("PDF");

Phrase phrase1 = new Phrase(new Chunk("字體顏色", fontRedCN));

Phrase phrase2 = new Phrase(new Chunk("測試", fontBlueCN));

document.add(phrase0);

document.add(phrase1);

document.add(phrase2);

// 產生新的一頁

document.newPage();

}



/**

 * 文件內容部分

 * @param document

 */

private static void addMetaDataTitle(Document document) {



// 增加標題

document.addTitle("PDF表頭");

// 增加作者

document.addAuthor("Puma製作");

// 增加建立PDF時間以及修改PDF日期

document.addCreationDate();

// 增加PDF中的關鍵字

document.addKeywords("關鍵字");

// 增加PDF的主題

document.addSubject("PDF TEST");

// 增加自訂內容

document.addHeader("PDF1", "測試1");

document.addHeader("PDF2", "測試2");



}



/**

 * 換行

 * @param paragraph

 * @param number

 */

private static void addEmptyLine(Paragraph paragraph, int number) {

if (number != 0) {

for (int i = 0; i < number; i++) {

paragraph.add(new Paragraph(" "));

}

}

}



/**

 * 增加空白

 * @param blank

 * @return

 */

private static String addBlank(int blank) {

StringBuilder bu = new StringBuilder();

if( blank > 0 ){

for (int i = 0; i <= blank; i++) {

bu.append(" ");

}

}

return bu.toString();

}

}