Nginx+Lua+GraphicsMagick，实现自定义图片尺寸功能，支持两种模式[固定高宽模式,定高或定宽模式]，支持FastDFS文件存储
github地址:https://github.com/yanue/nginx-lua-GraphicsMagick
- 类似淘宝图片，实现自定义图片尺寸功能，可根据图片加后缀_100x100.jpg(固定高宽),_-100.jpg(定高),_100-.jpg(定宽)形式实现自定义输出图片大小。
- 主要将自定义尺寸的图片放在完全独立的thumb目录（自定义目录）,并保持原有的图片目录结构。
- 新增定高或定宽裁切模式 左右结构,用"-"号区分未知高或未知宽("-"号不会被浏览器url转义),如 如: xx.jpg_100-.jpg 宽100,高自动 如: xx.jpg_-100.jpg 高100,宽自动
- 新增 php 动态获取图片尺寸的类文件
- 新增图片含有 query 参数图片裁剪的支持(做了伪静态跳转) 列如: xxx.jpg?a=b&c=d_750x750.jpg 或 xxx.jpg?params_750x750.jpg 最终跳转为: xxx.jpg_750x750.jpg
img.xxx.com(如/var/www/img)
|-- img1
| `-- 001
| `-- 001.jpg
|-- img2
| `-- notfound.jpg
|-- img3
| `-- 001
| `-- 001.jpgthumb（如/tmp/thumb,可在conf文件里面更改）
`-- img1
`-- 001
|-- 001_200x160.jpg 固定高和宽
|-- 001_-100.jpg 定高
|-- 001_200-.jpg 定宽- 其中img.xxx.com为图片站点根目录，img1,img2...目录是原图目录
- 缩略图目录根据保持原有结构，并单独设置目录，可定时清理。
- 原图访问地址：
http://img.xxx.com/xx/001/001.jpg - 缩略图访问地址：
http://img.xxx.com/xx/001/001.jpg_100x100.jpg即为宽100,高100 - 自动宽地址:
http://img.xxx.com/xx/001/001.jpg_-100.jpg用"-"表示自动,即为高100,宽自动 - 自动高地址:
http://img.xxx.com/xx/001/001.jpg_100-.jpg用"-"表示自动,即为宽100,高自动
- 首先判断缩略图是否存在，如存在则直接显示缩略图；
- 缩略图不存在,则判断原图是否存在，如原图存在则拼接graphicsmagick(gm)命令,生成并显示缩略图,否则返回404
CentOS6 安装过程见 nginx+lua+GraphicsMagick安装
- Nginx
./configure --prefix=/usr/local/nginx \
--user=www \
--group=www \
--sbin-path=/usr/sbin/nginx \
--conf-path=/etc/nginx/nginx.conf \
--pid-path=/var/run/nginx.pid \
--lock-path=/var/run/nginx.lock \
--error-log-path=/opt/logs/nginx/error.log \
--http-log-path=/opt/logs/nginx/access.log \
--with-http_ssl_module \
--with-http_realip_module \
--with-http_sub_module \
--with-http_flv_module \
--with-http_dav_module \
--with-http_gzip_static_module \
--with-http_stub_status_module \
--with-http_addition_module \
--with-http_spdy_module \
--with-pcre \
--with-zlib=../zlib-1.2.8 \
--add-module=../nginx-http-concat \
--add-module=../lua-nginx-module \
--add-module=../ngx_devel_kit \- GraphicsMagick(1.3.18)
- libjpeg
- libpng
- inotify(可选)
- autoSize.lua 定高或定宽模式裁切图片处理lua脚本
- cropSize.lua 固定高宽模式裁切图片处理lua脚本
server{
listen 80
# set var for thumb pic
set $upload_path /opt/uploads;
set $img_original_root $upload_path;# original root;
set $img_thumbnail_root $upload_path/cache/thumb;
set $img_file $img_thumbnail_root$uri;
# like：/xx/xx/xx.jpg_100-.jpg or /xx/xx/xx.jpg_-100.jpg
location ~* ^(.+\.(jpg|jpeg|gif|png))_((\d+\-)|(\-\d+))\.(jpg|jpeg|gif|png)$ {
root $img_thumbnail_root; # root path for croped img
set $img_size $3;
if (!-f $img_file) { # if file not exists
add_header X-Powered-By 'Nginx+Lua+GraphicsMagick By Yanue'; # header for test
add_header file-path $request_filename; # header for test
set $request_filepath $img_original_root$1; # origin_img full path：/document_root/1.gif
set $img_size $3; # img width or height size depends on uri
set $img_ext $2; # file ext
content_by_lua_file /etc/nginx/lua/autoSize.lua; # load lua
}
}
# like: /xx/xx/xx.jpg_100x100.jpg
location ~* ^(.+\.(jpg|jpeg|gif|png))_(\d+)+x(\d+)+\.(jpg|jpeg|gif|png)$ {
root $img_thumbnail_root; # root path for croped img
if (!-f $img_file) { # if file not exists
add_header X-Powered-By 'Nginx+Lua+GraphicsMagick By Yanue'; # header for test
add_header file-path $request_filename; # header for test
set $request_filepath $img_original_root$1; # origin_img file path
set $img_width $3; # img width
set $img_height $4; # height
set $img_ext $5; # file ext
content_by_lua_file /etc/nginx/lua/cropSize.lua; # load lua
}
}
location = /favicon.ico {
log_not_found off;
access_log off;
}
}server{
listen 80;
server_name xxx.com;
set $img_thumbnail_root /opt/fastdfs/thumb; #set thumb path
set $img_file $img_thumbnail_root$uri; #thumb file
# like：/pic/M00/xx/xx/xx.jpg_100-.jpg or /pic/M00/xx/xx/xx.jpg_-100.jpg
location ~* ^(\/(\w+)(\/M00)(.+\.(jpg|jpeg|gif|png)))_((\d+\-)|(\-\d+))\.(jpg|jpeg|gif|png)$ {
root $img_thumbnail_root; # root path for croped img
set $fdfs_group_root /opt/fastdfs/$2/store0/data; #set fastdfs group path $2
if (!-f $img_file) { # if thumb file not exists
add_header X-Powered-By 'Nginx+Lua+GraphicsMagick By Yanue'; # header for test
add_header file-path $request_filename; # header for test
set $request_filepath $fdfs_group_root$4; # origin_img full path：/document_root/1.gif
set $img_size $6; # img width or height size depends on uri : img size like "-100" or "100-", "-" means auto size
set $img_ext $5; # file ext
content_by_lua_file /etc/nginx/lua/autoSize.lua; # load auto width or height crop Lua file
}
}
# like：/pic/M00/xx/xx/xx.jpg_200x100.jpg
location ~* ^(\/(\w+)(\/M00)(.+\.(jpg|jpeg|gif|png))_(\d+)+x(\d+)+\.(jpg|jpeg|gif|png))$ {
root $img_thumbnail_root; # root path for croped img
set $fdfs_group_root /opt/fastdfs/$2/store0/data; #set fastdfs group path $2
if (!-f $img_file) { # if thumb file not exists
add_header X-Powered-By 'Nginx+Lua+GraphicsMagick By Yanue'; # header for test
add_header file-path $request_filename; # header for test
set $request_filepath $fdfs_group_root$4; # real file path
set $img_width $6; # img width
set $img_height $7; # img height
set $img_ext $5; # file ext
content_by_lua_file /etc/nginx/lua/cropSize.lua; # load crop Lua file
}
}
location /pic/M00 {
alias /opt/fastdfs/pic/store0/data;
ngx_fastdfs_module;
}
location /chat/M00 {
alias /opt/fastdfs/chat/store0/data;
ngx_fastdfs_module;
}
location = /favicon.ico {
log_not_found off;
access_log off;
}
}- lua 脚本处理并未做任何图片尺寸限制,这样很容易被恶意改变宽和高参数而随意生成大量文件,浪费资源和空间,请根据直接情况自行处理