java操作pdf

使用pdf模板生成pdf

1，工具 Adobe Acrobat X Pro

2，pom文件配置

<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itextpdf</artifactId>
<version>5.5.1</version>
</dependency>
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itext-asian</artifactId>
<version>5.2.0</version>
</dependency>

3，如果是比较复杂的pdf比如需要合并多个pdf文件可以参考如下代码

public class PdfViewUtil {

/**
* 生成合同pdf文件
*
* @param model 表单字段对应需要填充的数据
* @param list 出借人出借详情列表
* @param reType 还款方式
* @param producid 产品类型
* @return
* @throws IOException
* @throws DocumentException
*/
public static File getPdfFile(Map<String, String> model,List<ViewInvestPdf> list,String reType,Integer producid) throws IOException, DocumentException{
PdfReader reader = null;
if(producid == 5 || producid == 6 || producid == 7){
reader = new PdfReader(PdfViewUtil.class.getResourceAsStream("/template2.pdf"));
}else {
reader = new PdfReader(PdfViewUtil.class.getResourceAsStream("/template1.pdf"));
}
String tempDir = SystemUtil.getTempDir();
String prefix = UUID.randomUUID().toString().replaceAll("-", "");
String tempFileName = tempDir +File.separator+ prefix + ".pdf";// 模板生成的临时文件
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(tempFileName));
AcroFields fields = stamper.getAcroFields();
fillData(fields, model);
stamper.setFreeTextFlattening(true);
stamper.close();
String fileName = createTable(list,reType);//生成附件
Document doc = new Document();
prefix = UUID.randomUUID().toString().replaceAll("-", "");
String finalFileName = tempDir + File.separator + prefix + ".pdf";//最终生成的pdf临时文件
PdfCopy copy = new PdfCopy(doc, new FileOutputStream(finalFileName));
doc.open();
PdfReader r1 = new PdfReader(tempFileName);
int n = r1.getNumberOfPages();
for(int i = 1;i<=n;i++){
doc.newPage();
PdfImportedPage page = copy.getImportedPage(r1, i);
copy.addPage(page);
if(i == n){

PdfReader r2 = new PdfReader(fileName);
int m = r2.getNumberOfPages();
for(int j = 1;j<=m;j++){

doc.newPage();
PdfImportedPage page1 = copy.getImportedPage(r2, j);
copy.addPage(page1);
}
}
}
doc.close();
File file = new File(finalFileName);
return file;
}

/**
* 填充模板表单数据
*
* @param fields pdf表单字段
* @param data 表单字段填充的数据
* @throws IOException
* @throws DocumentException
*/
private static void fillData(AcroFields fields,Map<String, String> data) throws IOException, DocumentException{
for(String key :data.keySet()){
String value = data.get(key);
fields.setField(key, value);
}
}

/**
* 生成附件pdf模板（出借人列表
*
* @param list 出借人出借详情列表
* @param reType 还款方式
* @return
* @throws DocumentException
* @throws IOException
*/
private static String createTable(List<ViewInvestPdf> list,String reType) throws DocumentException, IOException{
Document document = new Document();
BaseFont bfChinese = BaseFont.createFont("STSongStd-Light","UniGB-UCS2-H", BaseFont.NOT_EMBEDDED); // 中文处理
Font FontChinese = new Font(bfChinese, 10, Font.NORMAL); // 其他所有文字字体
Font BoldChinese = new Font(bfChinese, 14, Font.BOLD); // 粗体
String tempDir = SystemUtil.getTempDir();
String prefix = UUID.randomUUID().toString().replaceAll("-", "");
String fileName = tempDir +File.separator+ prefix + ".pdf";
PdfWriter pdfwWriter = PdfWriter.getInstance(document, new FileOutputStream(fileName));
document.open();
// 写数据
document.add(new Paragraph("附件一",FontChinese));
document.add(Chunk.NEWLINE);
PdfPTable table = new PdfPTable(7);
table.addCell(new Phrase("网站id",FontChinese));
table.addCell(new Phrase("出借金额",FontChinese));
table.addCell(new Phrase("借款期限",FontChinese));
table.addCell(new Phrase("年化利率",FontChinese));
table.addCell(new Phrase("还款方式",FontChinese));
table.addCell(new Phrase("应还款日",FontChinese));
table.addCell(new Phrase("到期应收本息",FontChinese));
if(!list.isEmpty()){
ViewInvestPdf viewPdf = list.get(0);
String period = viewPdf.getPeriod() + "个月";
String apr = viewPdf.getApr() + "%";
NumberFormat nf = new DecimalFormat("###,##0.00");
for(ViewInvestPdf pdf : list){
String userName = pdf.getUserName();
userName = userName.substring(0, 1) + "**" + userName.substring(userName.length() - 1);
table.addCell(new Phrase(userName,FontChinese));
table.addCell(new Phrase("￥"+nf.format(pdf.getAmount()),FontChinese));
table.addCell(new Phrase(period,FontChinese));
table.addCell(new Phrase(apr,FontChinese));
table.addCell(new Phrase(reType,FontChinese));
table.addCell(new Phrase(new JDateTime(pdf.getReceiveTime()).toString("YYYY-MM-DD"),FontChinese));
table.addCell(new Phrase("￥"+nf.format(pdf.getWaitAmount()),FontChinese));
}
}
document.add(table);
document.close();
return fileName;
}
}