wkhtmltopdf专成pdf文件之后的页码显示问题
在页面header或者footer上面添加page（当前页数）topage（总页数）来显示页码
wkhtmltopdf --footer-right '/[topage]' http://www.google.com google.pdf
Headers And Footer Options--footer-center*<text>Centered footer text--footer-font-name*<name>Set footer font name (default Arial)--footer-font-size*<size>Set footer font size (default 11)--footer-html*<url>Adds a html footer--footer-left*<text>Left aligned footer text--footer-line*Display line above the footer--footer-right*<text>Right aligned footer text--footer-spacing*<real>Spacing between footer and content in mm (default 0)--header-center*<text>Centered header text--header-font-name*<name>Set header font name (default Arial)--header-font-size*<size>Set header font size (default 11)--header-html*<url>Adds a html header--header-left*<text>Left aligned header text--header-line*Display line below the header--header-right*<text>Right aligned header text--header-spacing*<real>Spacing between header and content in mm (default 0)
* Replaced by the number of the pages currently being printed * [frompage] Replaced by the number of the first page to be printed * [topage] Replaced by the number of the last page to be printed * [webpage] Replaced by the URL of the page being printed * [section] Replaced by the name of the current section * [subsection] Replaced by the name of the current subsection * [date] Replaced by the current date in system local format * [time] Replaced by the current time in system local format
