php経由でexecをしようとしています - 'ウィンドウサーバーに接続できません'

Question

Mac OSX 10.6、 私はJoomlaのPHPサイトからexecを使ってPDFを生成しようとしています：

exec("fop -fo /temp/sample.fo -pdf /temp/doc".$now.".pdf > /temp/stdout.log 2> /temp/stderr.log"); 

が、私が見るエラーログで：

Sat Jan 7 10:36:43 Georges-Mac.local java[8642] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged. 
Exception in thread "main" java.lang.InternalError: Can't connect to window server - not enough permissions. 
    at java.lang.ClassLoader$NativeLibrary.load(Native Method) 
    at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1827) 
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1724) 
    at java.lang.Runtime.loadLibrary0(Runtime.java:823) 
    at java.lang.System.loadLibrary(System.java:1045) 
    at sun.security.action.LoadLibraryAction.run(LoadLibraryAction.java:50) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at java.awt.Toolkit.loadLibraries(Toolkit.java:1605) 
    at java.awt.Toolkit.<clinit>(Toolkit.java:1627) 
    at java.awt.Color.<clinit>(Color.java:263) 
    at org.apache.xmlgraphics.java2d.GraphicContext.<init>(GraphicContext.java:88) 
    at org.apache.fop.render.intermediate.IFGraphicContext.<init>(IFGraphicContext.java:42) 
    at org.apache.fop.render.intermediate.IFRenderer.<init>(IFRenderer.java:128) 
    at org.apache.fop.render.RendererFactory.createRendererForDocumentHandler(RendererFactory.java:313) 
    at org.apache.fop.render.RendererFactory.tryIFDocumentHandlerMaker(RendererFactory.java:290) 
    at org.apache.fop.render.RendererFactory.createRenderer(RendererFactory.java:270) 
    at org.apache.fop.area.RenderPagesModel.<init>(RenderPagesModel.java:69) 
    at org.apache.fop.area.AreaTreeHandler.setupModel(AreaTreeHandler.java:130) 
    at org.apache.fop.area.AreaTreeHandler.<init>(AreaTreeHandler.java:102) 
    at org.apache.fop.render.RendererFactory.createFOEventHandler(RendererFactory.java:359) 
    at org.apache.fop.fo.FOTreeBuilder.<init>(FOTreeBuilder.java:105) 
    at org.apache.fop.apps.Fop.createDefaultHandler(Fop.java:101) 
    at org.apache.fop.apps.Fop.<init>(Fop.java:79) 
    at org.apache.fop.apps.FopFactory.newFop(FopFactory.java:271) 
    at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:109) 
    at org.apache.fop.cli.Main.startFOP(Main.java:174) 
    at org.apache.fop.cli.Main.main(Main.java:205) 

任意のヒント「ウィンドウサーバ」へのアクセスを許可するにはどのように？または回避策ですか？コマンドラインで

Answer 1

、Javaへfollowing argumentを渡す：

-Djava.awt.headless=true 

あなたは代わりに、これを行うことができるようにするために起動スクリプトを使用してのmodify your command to start java directlyする必要があるかもしれません。