PDF头部报错:Evaluation Warning : The document was created with Spire.PDF for Java.

问题描述

今天生成PDF缝骑章的时候遇到一个问题,那就是每一个文件第一页都会有这个错

会在页面的第一页加上Evaluation Warning : The document was created with Spire.PDF for Java.一段文字

该备注只会标记再报表的第一页的顶部。我们可以新增一页，并删掉第一页即可

解决思路1

使用aspose的License去验证

需要引用aspose包,引入操作我写了一个博客,地址如下

https://blog.csdn.net/weixin_46713508/article/details/125495770?spm=1001.2014.3001.5502

本地创建一个License.xml

<License><Data><Products><Product>Aspose.Total for Java</Product><Product>Aspose.Words for Java</Product></Products><EditionType>Enterprise</EditionType><SubscriptionExpiry>20991231</SubscriptionExpiry><LicenseExpiry>20991231</LicenseExpiry><SerialNumber>8bfe198c-7f0c-4ef8-8ff0-acc3237bf0d7</SerialNumber></Data><Signature>sNLLKGMUdF0r8O1kKilWAGdgfs2BvJb/2Xp8p5iuDVfZXmhppo+d0Ran1P9TKdjV4ABwAgKXxJ3jcQTqE/2IRfqwnPf8itN8aFZlV3TJPYeD3yWE7IT55Gz6EijUpC7aKeoohTb4w2fpox58wWoF3SNp6sK6jDfiAUGEHYJ9pjU=</Signature>
</License>

然后编写方法

  public static boolean getLicense() {boolean result = false;try {InputStream is = ConvertPDFUtils.class.getClassLoader().getResourceAsStream("\\license.xml");License aposeLic = new License();aposeLic.setLicense(is);result = true;} catch (Exception e) {e.printStackTrace();}return result;}

在转换的方法里面加入这个方法,值得注意点是aopse里面有针对不同文件有不同的license,别引入错了

这是word的license
import com.aspose.words.License;
这是excel的license
import com.aspose.cells.License;
这是pdf的license
import com.aspose.pdf.License

比如下面这个word转pdf的例子

    public boolean wordConvertPdf(MultipartFile file, String outPath) throws Exception {// 验证Licenseif (!getLicense()) {return false;}try {// 原始word路径Document doc = new Document(file.getInputStream());// 输出路径File pdfFile = new File(outPath);// 文件输出流FileOutputStream fileOS = new FileOutputStream(pdfFile);doc.save(fileOS, SaveFormat.PDF);fileOS.close();return true;} catch (Exception e) {e.printStackTrace();return false;}}

解决思路2

通过网上找例子找到了解决办法，因为这段文字只出现在第一页，所以这里的处理方式是在文档创建时先添加一个空白页，最后再把空白页去掉

代码实现

核心代码

 //添加一个空白页，目的为了删除jar包添加的水印，后面再移除这一页pdf.getPages().add();//创建字体PdfTrueTypeFont font = new PdfTrueTypeFont(new Font("宋体", Font.PLAIN, 10),true);//遍历文档中的页for (int i = 0; i < pdf.getPages().getCount(); i++) {Dimension2D pageSize = pdf.getPages().get(i).getSize();float y = (float) pageSize.getHeight() - 40;//初始化页码域PdfPageNumberField number = new PdfPageNumberField();//初始化总页数域PdfPageCountField count = new PdfPageCountField();//创建复合域PdfCompositeField compositeField = new PdfCompositeField(font, PdfBrushes.getBlack(), "第{0}页 共{1}页", number, count);//设置复合域内文字对齐方式compositeField.setStringFormat(new PdfStringFormat(PdfTextAlignment.Right, PdfVerticalAlignment.Top));//测量文字大小Dimension2D textSize = font.measureString(compositeField.getText());//设置复合域的在PDF页面上的位置及大小compositeField.setBounds(new Rectangle2D.Float(((float) pageSize.getWidth() - (float) textSize.getWidth())/2, y, (float) textSize.getWidth(), (float) textSize.getHeight()));//将复合域添加到PDF页面compositeField.draw(pdf.getPages().get(i).getCanvas());}//移除第一个页pdf.getPages().remove(pdf.getPages().get(pdf.getPages().getCount()-1));

完整代码

package dmyz.util;import com.spire.pdf.*;
import com.spire.pdf.automaticfields.PdfCompositeField;
import com.spire.pdf.automaticfields.PdfPageCountField;
import com.spire.pdf.automaticfields.PdfPageNumberField;
import com.spire.pdf.graphics.*;import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.geom.Dimension2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;/*** @Author  魏一鹤* @Description  骑缝章生成* @Date 17:03 2022/6/27
**/public class AcrossPageSeal {public static void main(String[] args) throws IOException {//要生成的文件模板PdfDocument pdf = new PdfDocument();pdf.loadFromFile("D:\\File\\test\\wyh\\3页.pdf");//添加一个空白页，目的为了删除jar包添加的水印，后面再移除这一页pdf.getPages().add();//创建字体PdfTrueTypeFont font = new PdfTrueTypeFont(new Font("宋体", Font.PLAIN, 10),true);//遍历文档中的页for (int i = 0; i < pdf.getPages().getCount(); i++) {Dimension2D pageSize = pdf.getPages().get(i).getSize();float y = (float) pageSize.getHeight() - 40;//初始化页码域PdfPageNumberField number = new PdfPageNumberField();//初始化总页数域PdfPageCountField count = new PdfPageCountField();//创建复合域PdfCompositeField compositeField = new PdfCompositeField(font, PdfBrushes.getBlack(), "第{0}页 共{1}页", number, count);//设置复合域内文字对齐方式compositeField.setStringFormat(new PdfStringFormat(PdfTextAlignment.Right, PdfVerticalAlignment.Top));//测量文字大小Dimension2D textSize = font.measureString(compositeField.getText());//设置复合域的在PDF页面上的位置及大小compositeField.setBounds(new Rectangle2D.Float(((float) pageSize.getWidth() - (float) textSize.getWidth())/2, y, (float) textSize.getWidth(), (float) textSize.getHeight()));//将复合域添加到PDF页面compositeField.draw(pdf.getPages().get(i).getCanvas());}//移除第一个页pdf.getPages().remove(pdf.getPages().get(pdf.getPages().getCount()-1));//获取分割后的印章图片BufferedImage[] images = GetImage(pdf.getPages().getCount());float x = 0;float y = 0;//实例化PdfUnitConvertor类PdfUnitConvertor convert = new PdfUnitConvertor();PdfPageBase pageBase;//将图片绘制到PDF页面上的指定位置for (int i = 0; i < pdf.getPages().getCount(); i++){BufferedImage image= images[ i ];pageBase = pdf.getPages().get(i);x = (float)pageBase.getSize().getWidth() - convert.convertUnits(image.getWidth(), PdfGraphicsUnit.Point, PdfGraphicsUnit.Pixel) + 40;y = (float) pageBase.getSize().getHeight()/ 2;pageBase.getCanvas().drawImage(PdfImage.fromImage(image), new Point2D.Float(x, y));}System.out.println("x = " + x);System.out.println("y = " + y);//最终生成缝骑章   的结果pdf.saveToFile("D:\\File\\test\\wyh\\Result.pdf");}//定义GetImage方法，根据PDF页数分割印章图片static BufferedImage[] GetImage(int num) throws IOException {String originalImg = "D:\\File\\test\\wyh\\魏一鹤的测试印章.png";BufferedImage image = ImageIO.read(new File(originalImg));int rows = 1;int cols = num;int chunks = rows * cols;int chunkWidth = image.getWidth() / cols;int chunkHeight = image.getHeight() / rows;int count = 0;BufferedImage[] imgs = new BufferedImage[ chunks ];for (int x = 0; x < rows; x++) {for (int y = 0; y < cols; y++) {imgs[ count ] = new BufferedImage(chunkWidth, chunkHeight, image.getType());Graphics2D gr = imgs[ count++ ].createGraphics();gr.drawImage(image, 0, 0, chunkWidth, chunkHeight,chunkWidth * y, chunkHeight * x,chunkWidth * y + chunkWidth, chunkHeight * x + chunkHeight, Color.WHITE,null);gr.dispose();}}return imgs;}}

处理前

处理后

错误已经消息

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