java使用Itext Pdf将图像添加到Pdf文件

Question

我正在使用iText生成Pdf。但当我尝试在pdf中添加图像时

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

但我也犯了同样的错误

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

400https://docs.oracle.com/javase/8/docs/api/java/net/HttpURLConnection.html#HTTP_BAD_REQUEST

显然是连接错误，请检查url是否有效，您可以正常登录

Answer 2

我已经解决了这个问题，问题是url中的空格。我已经用“% 20”替换空白空间，它工作得非常好。

Answer 3

请考虑切换到ITXEX7。正如Bruno已经指出的，您当前使用的版本不再受支持。 供您参考，iText7添加图像的方法是：

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jumpstart教程，针对那些已经知道iText如何工作并且需要一些迁移到iText7的指针的人

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