在 JAVA 上的 Google App Engine 上生成带图片的 PDF

发布于 2024-09-04 02:42:08 字数 4967 浏览 9 评论 0原文

我正在尝试在 GAE 上托管的项目中生成 PDF 文件。

目前,我使用 iText,它可以很好地创建纯文本 PDF。

我真的需要在我的 pdf 中添加图片。当我尝试使用 iText 时,我发现一些关于 AWT 和 google 白名单的异常:

Uncaught exception from servlet
java.lang.NoClassDefFoundError: java.awt.color.ICC_Profile is a restricted class. Please see the Google App Engine developer's guide for more details.
    at com.google.apphosting.runtime.security.shared.stub.java.awt.color.ICC_Profile.<clinit>(ICC_Profile.java)
    at com.lowagie.text.pdf.codec.PngImage.readPng(Unknown Source)
    at com.lowagie.text.pdf.codec.PngImage.getImage(Unknown Source)
    at com.lowagie.text.pdf.codec.PngImage.getImage(Unknown Source)
    at com.lowagie.text.pdf.codec.PngImage.getImage(Unknown Source)
    at com.lowagie.text.Image.getInstance(Unknown Source)
    at com.dooapp.jwsPlateforme.services.licence.PdfPrinterImpl.print(PdfPrinterImpl.java:19)
    at $PdfPrinter_128f4d9a1bb.print($PdfPrinter_128f4d9a1bb.java)
    at com.dooapp.jwsPlateforme.servlet.PdfServlet.doGet(PdfServlet.java:36)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:693)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
    at org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:129)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java:97)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:35)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
    at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
    at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
    at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
    at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
    at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:238)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.Server.handle(Server.java:326)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
    at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
    at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:76)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
    at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:135)
    at com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java:250)
    at com.google.apphosting.base.RuntimePb$EvaluationRuntime$6.handleBlockingRequest(RuntimePb.java:5838)
    at com.google.apphosting.base.RuntimePb$EvaluationRuntime$6.handleBlockingRequest(RuntimePb.java:5836)
    at com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest(BlockingApplicationHandler.java:24)
    at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:398)
    at com.google.net.rpc.impl.Server$2.run(Server.java:852)
    at com.google.tracing.LocalTraceSpanRunnable.run(LocalTraceSpanRunnable.java:56)
    at com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan(LocalTraceSpanBuilder.java:576)
    at com.google.net.rpc.impl.Server.startRpc(Server.java:807)
    at com.google.net.rpc.impl.Server.processRequest(Server.java:369)
    at com.google.net.rpc.impl.ServerConnection.messageReceived(ServerConnection.java:442)
    at com.google.net.rpc.impl.RpcConnection.parseMessages(RpcConnection.java:319)
    at com.google.net.rpc.impl.RpcConnection.dataReceived(RpcConnection.java:290)
    at com.google.net.async.Connection.handleReadEvent(Connection.java:474)
    at com.google.net.async.EventDispatcher.processNetworkEvents(EventDispatcher.java:831)
    at com.google.net.async.EventDispatcher.internalLoop(EventDispatcher.java:207)
    at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:103)
    at com.google.net.rpc.RpcService.runUntilServerShutdown(RpcService.java:251)
    at com.google.apphosting.runtime.JavaRuntime$RpcRunnable.run(JavaRuntime.java:413)
    at java.lang.Thread.run(Unknown Source)

你知道是否有一个库允许在 GAE 上的 PDF 上添加图片?

注意:我尝试了 iText-gae 但它得到了相同的异常

谢谢

I'm trying to generate PDF files in a project hosted on GAE.

For now, I use iText and it work fine to create text only PDF.

I really need to add pictures on my pdf. And when I try with iText I catch some Execption talking about AWT and the google white list :

Uncaught exception from servlet
java.lang.NoClassDefFoundError: java.awt.color.ICC_Profile is a restricted class. Please see the Google App Engine developer's guide for more details.
    at com.google.apphosting.runtime.security.shared.stub.java.awt.color.ICC_Profile.<clinit>(ICC_Profile.java)
    at com.lowagie.text.pdf.codec.PngImage.readPng(Unknown Source)
    at com.lowagie.text.pdf.codec.PngImage.getImage(Unknown Source)
    at com.lowagie.text.pdf.codec.PngImage.getImage(Unknown Source)
    at com.lowagie.text.pdf.codec.PngImage.getImage(Unknown Source)
    at com.lowagie.text.Image.getInstance(Unknown Source)
    at com.dooapp.jwsPlateforme.services.licence.PdfPrinterImpl.print(PdfPrinterImpl.java:19)
    at $PdfPrinter_128f4d9a1bb.print($PdfPrinter_128f4d9a1bb.java)
    at com.dooapp.jwsPlateforme.servlet.PdfServlet.doGet(PdfServlet.java:36)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:693)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
    at org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:129)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java:97)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:35)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
    at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
    at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
    at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
    at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
    at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:238)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.Server.handle(Server.java:326)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
    at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
    at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:76)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
    at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:135)
    at com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java:250)
    at com.google.apphosting.base.RuntimePb$EvaluationRuntime$6.handleBlockingRequest(RuntimePb.java:5838)
    at com.google.apphosting.base.RuntimePb$EvaluationRuntime$6.handleBlockingRequest(RuntimePb.java:5836)
    at com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest(BlockingApplicationHandler.java:24)
    at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:398)
    at com.google.net.rpc.impl.Server$2.run(Server.java:852)
    at com.google.tracing.LocalTraceSpanRunnable.run(LocalTraceSpanRunnable.java:56)
    at com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan(LocalTraceSpanBuilder.java:576)
    at com.google.net.rpc.impl.Server.startRpc(Server.java:807)
    at com.google.net.rpc.impl.Server.processRequest(Server.java:369)
    at com.google.net.rpc.impl.ServerConnection.messageReceived(ServerConnection.java:442)
    at com.google.net.rpc.impl.RpcConnection.parseMessages(RpcConnection.java:319)
    at com.google.net.rpc.impl.RpcConnection.dataReceived(RpcConnection.java:290)
    at com.google.net.async.Connection.handleReadEvent(Connection.java:474)
    at com.google.net.async.EventDispatcher.processNetworkEvents(EventDispatcher.java:831)
    at com.google.net.async.EventDispatcher.internalLoop(EventDispatcher.java:207)
    at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:103)
    at com.google.net.rpc.RpcService.runUntilServerShutdown(RpcService.java:251)
    at com.google.apphosting.runtime.JavaRuntime$RpcRunnable.run(JavaRuntime.java:413)
    at java.lang.Thread.run(Unknown Source)

Do you know if there is a library that allow to add picture on PDF on GAE?

Note : I try iText-gae but it get the same exception

Thank's

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评论(2

青柠芒果 2024-09-11 02:42:08

我本来建议您以无头模式启动 JVM,但是,在 GAE 上,这没有什么意义。

无论如何,由于 iText 存在这些问题,似乎至少有一个项目 - 适当命名为 iText-gae - 尝试解决这些问题。甚至看起来修补版本可以是 从网络下载。但请注意,使用它需要您自担风险!

I would have suggested you to launch your JVM in headless mode, but, well on GAE, it's of no interest.

Anyway, since iText has these issues, there seems that at least one project - appropriately named iText-gae - tries to cope with those. It even seems that a patched version can be downloaded from the web. But beware, use it at your own risk !

明月松间行 2024-09-11 02:42:08

您需要使用 iText 中包含的图像库,例如,在此代码片段中,我将在单元格中插入图像。

   import com.lowagie.text.Image;
   import com.lowagie.text.pdf.PdfPCell;

   Image img = Image.getInstance("/YOUR IMAGE ROUTE/");
   PdfPCell uno = new PdfPCell(img, true); 

我知道这个问题已经存在很长时间了,但也许将来会对某人有所帮助。

You need to use the Image library included in iText, for example, in this snippet i'm inserting an image in a cell.

   import com.lowagie.text.Image;
   import com.lowagie.text.pdf.PdfPCell;

   Image img = Image.getInstance("/YOUR IMAGE ROUTE/");
   PdfPCell uno = new PdfPCell(img, true); 

i know this question has ages but maybe will help someone in the future.

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