具有pssword保护的Grails renderPdf [英] Grails renderPdf with pssword protection

问题描述

有人知道如何在Grails 3.0.8的 renderPdf (org.grails.plugins:rendering:2.0.3)上应用密码吗?我尝试用google搜索，但没有结果.

Does anyone know how to apply a password on renderPdf (org.grails.plugins:rendering:2.0.3) on Grails 3.0.8? I have tried googled but not result.

推荐答案

要用密码保护您的PDF文件，您必须使用较低级别的内容，例如:

In order to password-protect your PDF-files you have to use the lower level stuff, like:

  import org.xhtmlrenderer.pdf.*

  void renderEncPdf( String url, out ){
    def enc = new PDFEncryption( 'userPassword'.bytes, 'ownerPassword'.bytes )

    ITextRenderer renderer
    try{
      renderer = new ITextRenderer()
      renderer.setPDFEncryption enc
      renderer.setDocument url
      renderer.layout()
      renderer.createPDF out
    }catch( Throwable e ){
      log.error e
    }finally{
      renderer.finishPDF()
    }
  }

url应该是用于生成的GSP视图的绝对URL.

the url should be the absolute url of your GSP-view you use for generation.

为此，我没有使用任何插件(因为现在缺少文档)，它是一个简单的itext依赖项.还应该可以以某种方式使用rendering插件

For this I didn't use any plugin (as the documentation is missing now), it's a simple itext dependency. It should be also possible to hook in with rendering plugin somehow

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