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OpenResty+lua+GraphicsMagick生成缩略图
1、安装GraphicsMagick
下载地址:http://sourceforge.net/projects/graphicsmagick/files/graphicsmagick/1.3.19/GraphicsMagick-1.3.19.tar.gz/download?use_mirror=ncu
tar zxvf GraphicsMagick-1.3.19.tar.gzcd GraphicsMagick-1.3.19makemake install
安装依赖包Ghostscript,不安装的话加水印会找不到字体
yum install -y ghostscript
2、配置nginx.conf
location /down/PersonImg { set $image_root /usr/local/openresty/nginx/html; set $file "$image_root$uri"; rewrite_by_lua ‘ local index = string.find(ngx.var.uri, "([0-9]+)x([0-9]+)"); local originalUri = string.sub(ngx.var.uri, 0, index-2); local area = string.sub(ngx.var.uri, index); index = string.find(area, "([.])"); area = string.sub(area, 0, index-1); local image_sizes = {"140x140", "800x800", "90x90"}; function table.contains(table, element) for _, value in pairs(table) do if value =http://www.mamicode.com/= element then return true end end return false end if table.contains(image_sizes, area) then local command = "/usr/local/GraphicsMagick/bin/gm convert " .. ngx.var.image_root .. originalUri .. " -thumbnail " .. area .. " -gravity center -extent " .. area .. " " .. ngx.var.file; os.execute(command); else ngx.exit(401) end ‘; alias /usr/local/openresty/nginx/html/down/PersonImg/; }
3、访问
http://10.10.3.221/down/PersonImg/3AFAE457-FDC8-27D3-E2B5-6C10A145A3A6.jpg.90x90.jpg
4、要加水印的话命令如下
/usr/local/GraphicsMagick/bin/gm convert /usr/local/openresty/nginx/html/down/PersonImg/3AFAE457-FDC8-27D3-E2B5-6C10A145A3A6.jpg -font ArialBold -pointsize 45 -fill red -draw "text 10,10 dsideal" /usr/local/openresty/nginx/html/down/PersonImg/3AFAE457-FDC8-27D3-E2B5-6C10A145A3A61111.jpg
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