java - 使用 Itext Pdf 将图像添加到 Pdf 文件

Question

我正在使用 iText 生成 Pdf。但是当我尝试在 pdf 中添加图像时，

Image schoolLogo = Image.getInstance(new URL(timetableResource.getImageUrl())); document.add(schoolLogo);

但是我收到错误

HTTP Status 500 - Server returned HTTP response code: 400 for URL: http://139.59.72.150:8080/sms/attachments/23/42/school/23/23/Vandana International School Logo.png

type Exception report

message Server returned HTTP response code: 400 for URL:(myUrl)

description The server encountered an internal error that prevented it from fulfilling this request.

exception

java.io.IOException: Server returned HTTP response code: 400 for URL: (myUrl) sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1876) sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1474) java.net.URL.openStream(URL.java:1045) com.lowagie.text.Image.getInstance(Unknown Source)

Answer 1

请考虑切换到 iText7。正如 Bruno 已经指出的那样，您当前使用的版本不再受支持。 供您引用，iText7 添加图像的方式是:

String FOX = "path/to/resource/fox.png";
String DOG = "path/to/resource/dog.png";

Image fox = new Image(ImageDataFactory.create(FOX));
Image dog = new Image(ImageDataFactory.create(DOG));
Paragraph p = new Paragraph("The quick brown ")
                .add(fox)
                .add(" jumps over the lazy ")
                .add(dog);
document.add(p);

有一个完整的入门教程，针对那些已经了解 iText 如何工作并需要一些迁移到 iText7 的指导的人。

查看http://developers.itextpdf.com/content/itext-7-jump-start-tutorial/chapter-1-introducing-basic-building-blocks