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生成通过函件PDF转图片（还有部分排版问题）

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This commit is contained in:
pserimal
2023-06-16 19:11:08 +08:00
parent 13a89de2b6
commit 6733deeba8
5 changed files with 52 additions and 47 deletions
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63
coolstore-partner-common/src/main/java/com/cool/store/utils/PDFUtils.java
View File

@@ -5,12 +5,15 @@ import com.lowagie.text.Font;
import com.lowagie.text.Image;
import com.lowagie.text.Paragraph;
import com.lowagie.text.pdf.*;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.rendering.PDFRenderer;
import org.icepdf.core.exceptions.PDFException;
import org.icepdf.core.exceptions.PDFSecurityException;
import org.icepdf.core.pobjects.Page;
import org.icepdf.core.util.GraphicsRenderingHints;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.io.*;
/**
@@ -128,37 +131,41 @@ public class PDFUtils {
/**
* PDF 转图片
* @param inputStream pdf 输入流
* @param dpi
* @param scale 缩放比例
*/
public static ByteArrayOutputStream pdf2Img(InputStream inputStream, float dpi) {
PDDocument document = null;
ByteArrayOutputStream outputStream = null;
public static ByteArrayOutputStream pdf2Img(InputStream inputStream, float scale) {
org.icepdf.core.pobjects.Document document = new org.icepdf.core.pobjects.Document();
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
try {
//　加载pdf文档
FileInputStream fileInputStream = new FileInputStream("passLetter.pdf");
document = PDDocument.load(fileInputStream);
//　PDF文档渲染对象
PDFRenderer renderer = new PDFRenderer(document);
int pageCount = document.getNumberOfPages();
for (int i = 0; i < pageCount; i++) {
/*
* renderImage(i,1.9f)
* i: 指定页对象下标,从0开始,0即第一页
* 1.9f:DPI值(Dots Per Inch),官方描述比例因子，其中 1 = 72 DPI
*/
BufferedImage image = renderer.renderImage(i, dpi);
outputStream = new ByteArrayOutputStream();
FileOutputStream fileOutputStream = new FileOutputStream("pdf2img.png");
ImageIO.write(image, "PNG", outputStream);
byte[] byteArray = outputStream.toByteArray();
fileOutputStream.write(byteArray);
fileOutputStream.close();
document.setInputStream(inputStream, "");
float rotation = 0f;// 旋转角度
for (int i = 0; i < document.getNumberOfPages(); i++) {
BufferedImage image = (BufferedImage) document.getPageImage(i,
GraphicsRenderingHints.SCREEN, Page.BOUNDARY_CROPBOX,
rotation, scale);
RenderedImage rendImage = image;
try {
ImageIO.write(rendImage, "png", outputStream);
//例子中是pdf转png格式的，也可以将上面两行改成jpg，转出jpg格式的，
//但是从转换效果来看png的清晰度会相对较高。有个小技巧是第一行行改成jpg，
//但第二行使用png，也就是转换成jpg格式但有png清晰度的图片。
} catch (IOException e) {
e.printStackTrace();
}
image.flush();
document.dispose();
return outputStream;
}
}catch (Exception e){
e.printStackTrace();
} catch (PDFException | PDFSecurityException | IOException e1) {
e1.printStackTrace();
} finally {
try {
outputStream.close();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return outputStream;
}
}

16
coolstore-partner-common/src/main/java/com/cool/store/utils/PassLetterUtils.java
View File

@@ -42,11 +42,11 @@ public class PassLetterUtils {
document.close();
//3. 填写通过函模板信息
addContentToPdf(outputStream, partnerName + " 先生/女士", 122, 640);
addContentToPdf(outputStream, passCode, 122, 558);
addContentToPdf(outputStream, verifyCity, 155, 494);
addContentToPdf(outputStream, "60天", 135, 450);
addContentToPdf(outputStream, passTimeStr, 393, 152);
addContentToPdf(outputStream, partnerName + " 先生/女士", 122, 638);
addContentToPdf(outputStream, passCode, 122, 557);
addContentToPdf(outputStream, verifyCity, 155, 492);
addContentToPdf(outputStream, "60天", 135, 448);
addContentToPdf(outputStream, passTimeStr, 385, 152);
return outputStream;
} catch (IOException e) {
throw new RuntimeException(e);
@@ -75,9 +75,9 @@ public class PassLetterUtils {
try {
ByteArrayInputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
PdfReader pdfReader = new PdfReader(inputStream);
String fontFamillyPath = PassLetterUtils.class.getResource("/static/simsun.ttc").getPath();
BaseFont font = BaseFont.createFont(fontFamillyPath + ",0", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
PDFUtils.putParagraphAbsolutely(pdfReader, outputStream, x, y, content, font, 20, 1, new Color(255, 82,25));
String fontFamilyPath = PassLetterUtils.class.getResource("/static/Alibaba-PuHuiTi-Regular.ttf").getPath();
BaseFont font = BaseFont.createFont(fontFamilyPath, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
PDFUtils.putParagraphAbsolutely(pdfReader, outputStream, x, y, content, font, 19, 1, new Color(255, 82,25));
} catch (Exception e) {
throw new RuntimeException(e);
}