Nginx+lua_Nginx+GraphicsMagick nginx 缩略图

Nginx+lua_Nginx+GraphicsMagick来实现实时缩略图（已验证）前期准备tar zxf libpng-1.6.16.tar.gzmake&&make install tar zxf jpegsrc.v9a.tar.gzmake&&make install 1、安装GraphicsMagick

cd /usr/local/src wget http://sourceforge.net/projects/graphicsmagick/files/graphicsmagick/1.3.20/GraphicsMagick-1.3.20.tar.gz/download tar -zxvf GraphicsMagick-1.3.20.tar.gz cd GraphicsMagick-1.3.20 ./configure --prefix=/usr/local/GraphicsMagick --with-jpeg=yes --with-png=yesmake && make install2、下载luajitwget http://luajit.org/download/LuaJIT-2.0.2.tar.gz tar -zxvf LuaJIT-2.0.2.tar.gz cd LuaJIT-2.0.2 make && make install PREFIX=/usr/local/lj2 ln -sf LuaJIT-2.0.2 /usr/local/lj2/bin/luajit3、下载 ngx_devel_kit 模块wget https://github.com/simpl/ngx_devel_kit/archive/master.zip unzip master4、下载 lua-nginx-module 模块https://github.com/openresty/lua-nginx-module/archive/master.zip unzip master
5、下载echo https://github.com/agentzh/echo-nginx-module/zipball/master unzip echo-nginx-module 6、tar zxf ngx_cache_purge-2.3.tar.gz 7、下载nginxwget http://nginx.org/download/nginx-1.7.5.tar.gz... 8、设置环境变量export LUAJIT_LIB=/usr/local/lj2/lib export LUAJIT_INC=/usr/local/lj2/include/luajit-2.0 export LD_LIBRARY_PATH=/usr/local/lib/:$LD_LIBRARY_PATH export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:$PKG_CONFIG_PATH GM_HOME=/usr/local/GraphicsMagick; PATH=$GM_HOME/bin:$PATH; export PATH export GM_HOME source /etc/profile 9、nginx 编译安装./configure --prefix=/usr/local/nginx --with-http_stub_status_module --add-module=/usr/local/src/ngx_devel_kit-master --with-ld-opt=-Wl,-rpath,/usr/local/lj2/lib --add-module=/usr/local/src/ngx_cache_purge-2.3 --with-http_perl_module --add-module=/usr/local/src/lua-nginx-module-master --add-module=/usr/local/src/openresty-echo-nginx-module-23cb1c2 如果编译有错，请把pcre扩展附加上10、nginx配置11、虚拟目录vhostserver { listen 80; server_name image.host.com; root /usr/local/nginx/html/test; index index.html index.htm index.php; location /lua1 { default_type 'text/plain'; content_by_lua 'ngx.say("hello, lua")'; } location /image { set $image_root /usr/local/nginx/html/test; set $file "$image_root$uri"; if (!-f $file) { rewrite_by_lua ' local index = string.find(ngx.var.uri, "([0-9]+)x([0-9]+)"); if (index == nil) then ngx.exit(404);end; 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 = {"160x160","400x300"}; local image_big = {"80x60^", "120x90^", "160x120^"}; function table.contains(table, element) for _, value in pairs(table) do if value == element then return true end end return false end # print(table.contains(image_big, area)) if table.contains(image_big, area) then local command = "/usr/local/GraphicsMagick/bin/gm convert " .. ngx.var.image_root .. originalUri .. " -thumbnail " .. area .. " -background gray -gravity center -extent " .. area .. " " .. ngx.var.image_root .. ngx.var.uri os.execute(command); else if table.contains(image_sizes, area) then local command = "/usr/local/GraphicsMagick/bin/gm convert " .. ngx.var.image_root .. originalUri .. " -thumbnail " .. area .. " " .. ngx.var.image_root .. ngx.var.uri; os.execute(command); else ngx.exit(404); end; end; '; } # alias /usr/local/nginx/html/test/image; expires 7d; }}

12、赋予权限chmod o+w /usr/local/nginx/html/test/image13、访问原地址：http://image.rose.com/image/2.jpg缩略图地址：http://image.rose.com/image/2.jpg.400x300.jpg