我有一个程序,需要使用Image Magick将PDF转换为图像。我使用subprocess包来做到这一点:
subprocess
cmd = 'magick convert -density 300 '+pdfFile+'['+str(rangeTuple[0])+'-'+str(rangeTuple[1])+'] -depth 8 '+'temp.tiff' #WINDOWS if(os.path.isfile('temp.tiff')): os.remove('temp.tiff') subprocess.call(cmd,shell=True) im = Image.open('temp.tiff')
我得到的错误是:
convert-im6.q16: not authorized `temp2.pdf' @ error/constitute.c/ReadImage/412. convert-im6.q16: no images defined `temp.tiff' @ error/convert.c/ConvertImageCommand/3258. Traceback (most recent call last): File "UKExtraction2.py", line 855, in <module> doItAllUpper("A0","UK5.csv","temp",59,70,"box",2,1000,firstPageCoordsUK,boxCoordUK,voterBoxCoordUK,internalBoxNumberCoordUK,externalBoxNumberCoordUK,addListInfoUK) File "UKExtraction2.py", line 776, in doItAllUpper doItAll(tempPDFName,outputCSV,2,pdfs,formatType,n_blocks,writeBlockSize,firstPageCoords,boxCoord,voterBoxCoord,internalBoxNumberCoord,externalBoxNumberCoord,addListInfo,pdfName) File "UKExtraction2.py", line 617, in doItAll mainProcess(pdfName,(0,noOfPages-1),formatType,n_blocks,outputCSV,writeBlockSize,firstPageCoords,boxCoord,voterBoxCoord,internalBoxNumberCoord,externalBoxNumberCoord,addListInfo,bigPDFName,basePages) File "UKExtraction2.py", line 542, in mainProcess im = Image.open('temp.tiff') File "/home/rohit/.local/lib/python3.6/site-packages/PIL/Image.py", line 2609, in open fp = builtins.open(filename, "rb") FileNotFoundError: [Errno 2] No such file or directory: 'temp.tiff'
其中最重要的是:
convert-im6.q16: not authorized `temp2.pdf' @ error/constitute.c/ReadImage/412.
我认为这是因为ImageMagick无权访问PDF。现在应该怎么办?我在Linux服务器上。任何帮助表示赞赏。
emcconville是正确的。更具体地说,编辑Imagemagick policy.xml文件以取消注释此行:
<!-- <policy domain="module" rights="none" pattern="{PS,PDF,XPS}" /> -->
并将其从rights =“ none”更改为rights =“ read | write”
<policy domain="module" rights="read|write" pattern="{PS,PDF,XPS}" />
我相信,这是对policy.xml文件的最新添加,这是由于Ghostscript委托中发现了一个安全漏洞。我认为该漏洞已在当前版本的Ghostscript(即9.25)中修复。
注意:在某些系统上,策略行将具有domain =“ coder”而不是domain =“ module”