使用xpdf读取PDF文件内容

C:\Documents and Settings\Administrator>pdftotext.exe

pdftotext version 3.02
Copyright 1996-2007 Glyph & Cog, LLC
Usage: pdftotext [options] []
  -f           : first page to convert
  -l           : last page to convert
  -layout           : maintain original physical layout
  -raw              : keep strings in content stream order
  -htmlmeta         : generate a simple HTML file, including the meta informatio
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  -enc      : output text encoding name
  -eol      : output end-of-line convention (unix, dos, or mac)
  -nopgbrk          : don't insert page breaks between pages
  -opw      : owner password (for encrypted files)
  -upw      : user password (for encrypted files)
  -q                : don't print any messages or errors
  -cfg      : configuration file to use in place of .xpdfrc
  -v                : print copyright and version info
  -h                : print usage information
  -help             : print usage information
  --help            : print usage information
  -?                : print usage information