itext7 研究 结果 实在研究不下去了没有itext5用着顺手 好的一点是 字体支持小数
作者：互联网
package online.difei.itext7;
import com.itextpdf.io.font.PdfEncodings;
import com.itextpdf.io.image.ImageDataFactory;
import com.itextpdf.kernel.color.Color;
import com.itextpdf.kernel.color.DeviceCmyk;
import com.itextpdf.kernel.color.DeviceRgb;
import com.itextpdf.kernel.color.Separation;
import com.itextpdf.kernel.font.PdfFont;
import com.itextpdf.kernel.font.PdfFontFactory;
import com.itextpdf.kernel.geom.Rectangle;
import com.itextpdf.kernel.pdf.*;
import com.itextpdf.kernel.pdf.canvas.PdfCanvas;
import com.itextpdf.kernel.pdf.function.PdfFunction;
import com.itextpdf.kernel.utils.PdfMerger;
import com.itextpdf.layout.Canvas;
import com.itextpdf.layout.Document;
import com.itextpdf.layout.element.Image;
import com.itextpdf.layout.property.TextAlignment;
import java.io.*;
import java.net.MalformedURLException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class HelloItext7 {
public static final String DEST = "C:\\Users\\Administrator\\Desktop\\hello.pdf";
public static Color color = new DeviceCmyk(100,0,0,0);
public static String imgPath = "C:\\Users\\Administrator\\Desktop\\123.png";
public static String fontPath = "D:\\font\\msyh.ttf";
public static void main(String args[]) throws IOException {
final PdfDocument pdf = new PdfDocument(new PdfWriter(DEST));
Document document = new Document(pdf);
pdf.addNewPage();
pdf.addNewPage();
pdf.addNewPage();
PdfPage page = pdf.getPage(1);
final PdfCanvas pdfCanvas = new PdfCanvas(page);
//---------------------------------------画文字-------------------------------------------
addText(pdfCanvas,pdf,color,fontPath,12.5f,"jialan75",10,25,TextAlignment.LEFT,1f);
//-----------------------------------------线条-------------------------------------
List<List<Float>> pointList = new ArrayList<List<Float>>();
pointList.add(Arrays.asList(new Float[]{0f,100f}));
pointList.add(Arrays.asList(new Float[]{100f,100f}));
pointList.add(Arrays.asList(new Float[]{100f,200f}));
pointList.add(Arrays.asList(new Float[]{50f,50f}));
addLine(pdfCanvas,color,pointList,0.1f);
//-----------------------------------------图片-------------------------------------
/**
* 插入一个图片 宽度150 高度 按比例 坐标 800,800
*/
addImage(pdfCanvas,pdf,imgPath,150,400,400);
/**
* 插入一个图片 在第二页 宽度150 高度 按比例 坐标 10,10
*/
addImage(document,imgPath,2,150,10,10);
/**
* 插入一个图片 在第三页 宽度100 高度 按比例 坐标 200,200
*/
addImage(document,imgPath,3,100,200,200);
document.close();
pdf.close();
//----------------------------------合并-----------------------------------------------
List<String> paths = new ArrayList<String>();
paths.add("C:\\Users\\Administrator\\Desktop\\hello4.pdf");
paths.add("C:\\Users\\Administrator\\Desktop\\hello5.pdf");
pdfMerger(paths,"C:\\Users\\Administrator\\Desktop\\hello3.pdf");
}
/**
* 画图片(高度按比例)
* @param document PDF文档
* @param imgPath 图片路径
* @param pageIndex 页码
* @param w 图片宽度
* @param x 图片X坐标
* @param y 图片Y坐标
* @return ture添加成功 false添加失败
* @date 2021年11月4日22:50:25
* @author jialan75
*/
public static boolean addImage(Document document,String imgPath,int pageIndex,float w,float x,float y) throws MalformedURLException {
Image image = new Image(ImageDataFactory.create(imgPath));
if(image==null)return false;
image.setFixedPosition(pageIndex,x,y,w);
document.add(image);
return true;
}
/**
* 画图片(高度按比例)
* @param pdfCanvas PdfDocument
* @param pdf PdfCanvas
* @param imgPath 图片路径
* @param w 图片宽度
* @param x 图片X坐标
* @param y 图片Y坐标
* @return ture添加成功 false添加失败
* @throws MalformedURLException
* @date 2021年11月4日22:50:25
* @author jialan75
*/
public static boolean addImage(PdfCanvas pdfCanvas,PdfDocument pdf,String imgPath,float w,float x,float y) throws MalformedURLException {
Image image = new Image(ImageDataFactory.create(imgPath),x,y,w);
if(image==null)return false;
Canvas canvas = new Canvas(pdfCanvas,pdf,new Rectangle(0,0));
canvas.add(image);
return true;
}
/**
* 画线条
* @param pdfCanvas pdfCanvas
* @param color 线条颜色
* @param pointList 坐标点
* @param lineWidth 线宽
* @date 2021年11月4日22:50:25
* @author jialan75
*/
public static void addLine(PdfCanvas pdfCanvas,Color color,List<List<Float>> pointList,float lineWidth) {
if (pointList.isEmpty()) {
return;
}
if(pointList.size()<2){
return;
}
List<Float> firstPoint = pointList.get(0);
pdfCanvas.moveTo(firstPoint.get(0),firstPoint.get(1));
for (int i = 1; i < pointList.size(); i++) {
List<Float> point = pointList.get(i);
pdfCanvas.lineTo(point.get(0),point.get(1));
}
pdfCanvas.setLineWidth(lineWidth);
pdfCanvas.setStrokeColor(color);
pdfCanvas.stroke();
}
/**
* 添加文字
* @param pdfCanvas PdfCanvas
* @param pdf PdfDocument
* @param color 文字颜色
* @param fontPath 字体路径
* @param fontSize 字号
* @param content 内容
* @param x X坐标
* @param y Y坐标
* @param alignment 对齐方式
* @param opacity 透明度
* @return
* @throws IOException
* @date 2021年11月4日22:50:25
* @author jialan75
*/
public static boolean addText(PdfCanvas pdfCanvas,PdfDocument pdf,Color color,String fontPath,float fontSize,String content,float x,float y,TextAlignment alignment,float opacity) throws IOException {
if(!new File(fontPath).exists()){
return false;
}
PdfFont font = PdfFontFactory.createFont(fontPath, PdfEncodings.IDENTITY_H, true);
if(null == font){
return false;
}
Canvas canvas = new Canvas(pdfCanvas,pdf,new Rectangle(pdf.getFirstPage().getPageSize()));
canvas.setFontColor(color,opacity);
canvas.setFontSize(fontSize);
canvas.setFont(font);
canvas.showTextAligned(content,x,y,alignment);
return true;
}
/**
* 获取专色根据 RGB色值
* @param name 专色名称
* @param r
* @param g
* @param b
* @param tint
* @date 2021年11月4日22:50:25
* @author jialan75
* @return
*/
public static Separation createSpotColorRGB(String name, int r,int g,int b,float tint){
DeviceRgb alternateSpace = new DeviceRgb(r, g, b);
PdfArray one =new PdfArray(new float[]{0.0f, 1f});
PdfArray two = null;
PdfArray three = new PdfArray(new float[] { 1f, 1f, 1f });
PdfArray four = new PdfArray(new float[] { alternateSpace.getColorValue()[0], alternateSpace.getColorValue()[1], alternateSpace.getColorValue()[2]});
PdfNumber five =new PdfNumber(1f);
PdfFunction tintTransform = new PdfFunction.Type2(one,two,three,four,five);
Separation spot = new Separation(name, alternateSpace.getColorSpace(), tintTransform, tint);
return spot;
}
/**
* 创建专色根据 CMYK值
* @param name 专色名称
* @param c
* @param m
* @param y
* @param k
* @param tint
* @return
* @date 2021年11月4日22:50:25
* @author jialan75
*/
public static Separation createSpotColorCMYK(String name, int c, int m, int y, int k,float tint){
DeviceCmyk alternateSpace = new DeviceCmyk(c, m,y,k);
PdfArray one =new PdfArray(new float[]{0.0f, 1f});
PdfArray two = null;
PdfArray three = new PdfArray(new float[] { 1f, 1f, 1f , 1f });
PdfArray four = new PdfArray(new float[] { alternateSpace.getColorValue()[0], alternateSpace.getColorValue()[1], alternateSpace.getColorValue()[2], alternateSpace.getColorValue()[3]});
PdfNumber five =new PdfNumber(1f);
PdfFunction tintTransform = new PdfFunction.Type2(one,two,three,four,five);
Separation spot = new Separation(name, alternateSpace.getColorSpace(), tintTransform, tint);
return spot;
}
/**
*
* @Title: pdfMerger
* @Description: PDF合并
* @param paths 需要合并的所有文件路径(路径+名称)
* @param outputPath 合并后的文件路径(路径+名称)
* void
* @author yanghainan
* @date 2020年7月3日下午3:21:00
*/
public static boolean pdfMerger(List<String> paths, String outputPath) {
if (paths == null || paths.isEmpty() || null==outputPath||"".equals(outputPath)) {
return false;
}
// 首页与其他页创建方式不同，所以需要创建两个
PdfDocument firstSourcePdf = null;
PdfDocument secondSourcePdf = null;
// 合并需要的工具类
PdfMerger merger = null;
try {
for (int i = 0; i < paths.size(); i++) {
if (i == 0) {
PdfWriter pdfWriter = new PdfWriter(outputPath);
// 启用完全压缩
// pdfWriter.isFullCompression();
firstSourcePdf = new PdfDocument(new PdfReader(paths.get(i)), pdfWriter);
merger = new PdfMerger(firstSourcePdf);
continue;
}
secondSourcePdf = new PdfDocument(new PdfReader(paths.get(i)));
merger.merge(secondSourcePdf, 1, secondSourcePdf.getNumberOfPages());
secondSourcePdf.close();
}
return true;
} catch (Exception e) {
e.printStackTrace();
} finally {
// 关闭流
if (firstSourcePdf != null) {
firstSourcePdf.close();
}
if (secondSourcePdf != null) {
secondSourcePdf.close();
}
if (merger != null) {
merger.close();
}
}
return false;
}
}
标签：return,import,float,itext7,param,itext5,new,pdf,小数 来源： https://blog.csdn.net/jialan75/article/details/121153519