Nginx+lua_Nginx+GraphicsMagick来实现实时缩略图(已验证)
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1、安装GraphicsMagick
cd /usr/local/srcwget http://sourceforge.net/projects/graphicsmagick/files/graphicsmagick/1.3.20/GraphicsMagick-1.3.20.tar.gz/downloadtar -zxvf GraphicsMagick-1.3.20.tar.gzcd GraphicsMagick-1.3.20./configure --prefix=/usr/local/GraphicsMagickmake && make install
2、下载luajit
wget http://luajit.org/download/LuaJIT-2.0.2.tar.gztar -zxvf LuaJIT-2.0.2.tar.gzcd LuaJIT-2.0.2 make && make install PREFIX=/usr/local/lj2 ln -sf LuaJIT-2.0.2 /usr/local/lj2/bin/luajit
3、下载 ngx_devel_kit 模块
wget https://github.com/simpl/ngx_devel_kit/archive/master.zipunzip master.zip
4、下载 lua-nginx-module 模块
https://github.com/openresty/lua-nginx-module/archive/master.zipunzip master.zip
5、下载echo
https://github.com/agentzh/echo-nginx-module/zipball/masterunzip echo-nginx-module.zip
6、下载cache
按 Ctrl+C 复制代码
按 Ctrl+C 复制代码
7、下载nginx
wget http://nginx.org/download/nginx-1.7.5.tar.gz...
8、设置环境变量
export LUAJIT_LIB=/usr/local/lj2/libexport LUAJIT_INC=/usr/local/lj2/include/luajit-2.0export LD_LIBRARY_PATH=/usr/local/lib/:$LD_LIBRARY_PATH export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:$PKG_CONFIG_PATHGM_HOME=/usr/local/GraphicsMagick;PATH=$GM_HOME/bin:$PATH;export PATHexport GM_HOMEsource /etc/profile
9、nginx 编译安装
--prefix=/usr/local/nginx --with-http_stub_status_module --add-module=/usr/src/simpl-ngx_devel_kit --with-ld-opt=-Wl,-rpath,/usr/local/lj2/lib --add-module=/usr/src/ngx_cache_purge-2.1 --with-http_perl_module --add-module=/usr/local/src/lua-nginx-module --add-module=/usr/local/src/echo-nginx-module-master
如果编译有错,请把pcre扩展附加上
10、nginx配置
11、虚拟目录vhost
server { 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/image
13、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
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