Package cn.net.pap.common.pdf

Class PDFUtil

java.lang.Object

cn.net.pap.common.pdf.PDFUtil

public class PDFUtil
extends Object

Constructor Summary

Constructors

Constructor	Description
PDFUtil()

Method Summary

Modifier and Type	Method	Description
static void	addProtect(String pdfFilePath, String ownerPassword, String userPassword, String outputFilePath)	添加禁止编辑(密码)
static void	addSign(String pdfFilePath, String keystorePath, String keystorePassword, String outputFilePath)	添加数字签名
static void	addStamp(String pdfFilePath, String imageFilePath, String outputFilePath)	添加印章
static void	analyzePdf(String filePath)	分析
static void	convertPDFA(String inputFilePath, String outputFilePath)	convert PDF/A
static boolean	convertPDFToJPG(String pdfFilePath, String outputPath, Integer DPI)	单页 PDF 转换 JPG
static Boolean	dir2Pdf(String dirPath, String pdfPath, Integer DPI)
static void	drawParagraphs(String pdfPath, List<String> paragraphs)	写入段落
static void	drawRectangleBy4Point(String pdfPath, PointDTO leftBottom, PointDTO rightBottom, PointDTO rightTop, PointDTO leftTop)	画矩形， 或者是表格的一个长方形的框。 提供一个从左下角开始，左上角结束的逆时针的四个点坐标.
static void	drawText(String pdfPath, List<CoordsDTO> coordsDTOList)	写文字，支持字体大小和按照写入顺序读取.
static ByteArrayOutputStream	extractPage(String pdfFilePath, int pageNum)	用低内存方式提取 PDF 单页，避免一次性加载整个文件
static org.apache.pdfbox.pdmodel.font.PDType0Font	findFont(String text)	查询可用的字体
static Boolean	jpg2Pdf(String jpgPath, String pdfPath)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

PDFUtil

public PDFUtil()

Method Details

extractPage

public static ByteArrayOutputStream extractPage(String pdfFilePath,
 int pageNum)
                                         throws IOException

用低内存方式提取 PDF 单页，避免一次性加载整个文件

Parameters:

pdfFilePath - PDF 文件路径

pageNum - 要提取的页码（从1开始）

Returns:

单页 PDF 的 ByteArrayOutputStream

Throws:

IOException - IO异常或非法页码

convertPDFToJPG

public static boolean convertPDFToJPG(String pdfFilePath,
 String outputPath,
 Integer DPI)

单页 PDF 转换 JPG

Parameters:

pdfFilePath - PDF文件绝对路径

outputPath - JPG文件绝对路径

DPI - DPI

addStamp

public static void addStamp(String pdfFilePath,
 String imageFilePath,
 String outputFilePath)
                     throws Exception

添加印章

Parameters:

pdfFilePath -

imageFilePath -

outputFilePath -

Throws:

Exception

addSign

public static void addSign(String pdfFilePath,
 String keystorePath,
 String keystorePassword,
 String outputFilePath)
                    throws Exception

添加数字签名

Parameters:

pdfFilePath -

keystorePath - *.p12 可以申请SSL证书(*.key, .crt)，然后使用openssl 命令转换为 p12 证书

keystorePassword - 密码

outputFilePath -

Throws:

Exception

addProtect

public static void addProtect(String pdfFilePath,
 String ownerPassword,
 String userPassword,
 String outputFilePath)
                       throws Exception

添加禁止编辑(密码)

Parameters:

pdfFilePath -

ownerPassword -

userPassword -

outputFilePath -

Throws:

Exception

convertPDFA

public static void convertPDFA(String inputFilePath,
 String outputFilePath)
                        throws Exception

convert PDF/A

Parameters:

inputFilePath -

outputFilePath -

Throws:

Exception

drawText

public static void drawText(String pdfPath,
 List<CoordsDTO> coordsDTOList)
                     throws IOException

写文字，支持字体大小和按照写入顺序读取.

Parameters:

pdfPath -

coordsDTOList -

Throws:

IOException

findFont

public static org.apache.pdfbox.pdmodel.font.PDType0Font findFont(String text)

查询可用的字体

Parameters:

text -

Returns:

drawParagraphs

public static void drawParagraphs(String pdfPath,
 List<String> paragraphs)
                           throws IOException

写入段落

Parameters:

pdfPath -

paragraphs -

Throws:

IOException

drawRectangleBy4Point

public static void drawRectangleBy4Point(String pdfPath,
 PointDTO leftBottom,
 PointDTO rightBottom,
 PointDTO rightTop,
 PointDTO leftTop)
                                  throws IOException

画矩形， 或者是表格的一个长方形的框。 提供一个从左下角开始，左上角结束的逆时针的四个点坐标.

Parameters:

pdfPath -

leftBottom - 左下角

rightBottom - 右下角

rightTop - 右上角

leftTop - 左上角

Throws:

IOException

jpg2Pdf

public static Boolean jpg2Pdf(String jpgPath,
 String pdfPath)

dir2Pdf

public static Boolean dir2Pdf(String dirPath,
 String pdfPath,
 Integer DPI)

analyzePdf

public static void analyzePdf(String filePath)
                       throws IOException

分析

Parameters:

filePath -

Throws:

IOException