nginx+lua+image实现上传图片裁剪和加水印
https://github.com/openresty/lua-nginx-module
https://github.com/simpl/ngx_devel_kit
Lua JIT
http://luajit.org/download.html
configure \ ... --add-module=/path/lua-nginx-module \ --add-module=/path/ngx_devel_kit make && make install
ImageMagick
http://www.imagemagick.org/
Modify
nginx-server.conf
convert_binimagemagick_install_path/bin/convertrewrite_by_lua_filenginx-imagemagick.lua save path
if want to allow more image size, please modify the image_sizes variable in nginx-imagemagick.lua
server
{
listen 80;
server_name upload.qq.com;
index index.html index.htm index.php;
root /h1/upload.qq.com;
location ~ ^(.+\.php)(.*)$ {
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_split_path_info ^(.+\.php)(.*)$;
fastcgi_param SCRIPT_FILENAME /path/to/php$fastcgi_script_name;
fastcgi_param PATH_INFO $fastcgi_path_info;
fastcgi_param PATH_TRANSLATED $document_root$fastcgi_path_info;
include fcgi.conf;
}
rewrite ^/attachment/image/(.*).jpg$ /attachment/image/$1.jpg!0x0 last;#处理原始图显示为0x0图
# rewrite ^/images/(.*).jpg ^/images/$1.jpg!0x0 last;
location /attachment/image/ {
set $image_root "/htdoc/upload.qq.com";
set $file "$image_root$uri";
set $convert_bin "/usr/local/bin/convert";
if (!-f $file)
{
rewrite_by_lua_file /usr/local/webserver/nginx/conf/nginx-imagemagick.lua;
}
expires max;
}
location ~ .*\.(js|css)?$
{
expires max;
}
}
下面是lua代码 nginx-imagemagick.lua：
-- http://domain.com/111/photo/201411/05/5459e306820af926411357_320x320.jpg
-- config
local image_sizes = { "640x640", "320x320", "124x124", "140x140", "64x64", "60x60", "32x32", "0x0" }
-- parse uri
function parseUri(uri)
local _, _, name, ext, size = string.find(uri, "(.+)(%..+)!(%d+x%d+)")
--ngx.header.content_type = "text/plain";
--ngx.say(name,size);
if name and size and ext then
return ngx.var.image_root .. name .. ext, size
else
return "",""
end
end
function fileExists(name)
local f = io.open(name, "r")
if f ~= nil then
io.close(f)
return true
else
return false
end
end
--ngx.header.content_type = "text/plain";
--ngx.say(name);
function sizeExists(size)
for _, value in pairs(image_sizes) do
if value == size then
return true
end
end
return false
end
--ngx.header.content_type = "text/plain";
--ngx.say(size);
function resize()
local ori_filename, size = parseUri(ngx.var.uri)
--ngx.header.content_type = "text/plain";
--ngx.say(ori_filename,size);
if fileExists(ori_filename) == false or sizeExists(size) == false then
ngx.exit(404)
end
local command = '';
if size == '0x0' then
command = table.concat({
ngx.var.convert_bin,
ori_filename,
"/usr/local/webserver/nginx/conf/logo.png",
"-gravity southeast -geometry +5+10 -composite",
ngx.var.file,
}, " ")
else
command = table.concat({
ngx.var.convert_bin,
ori_filename,
"/usr/local/webserver/nginx/conf/logo.png",
"-gravity southeast -geometry +5+10 -composite -resize",
size,
ngx.var.file,
}, " ")
end
--ngx.header.content_type = "text/plain";
--ngx.say(command);
os.execute(command)
end
--ngx.header.content_type = "text/plain";
--ngx.say(command);
resize()
再下面是nginx的mime配置
[root@localhost conf]# cat mime.types
types {
text/html html htm shtml;
text/css css;
text/xml xml plist;
image/gif gif gif!320x320 gif!64x64 gif!140x140;
image/jpeg jpeg jpg jpg!320x320 jpg!64x64 jpg!140x140 jpg!200x200 jpg!0x0;
结果地址 http://upload.qq.com/images/13.jpg(原始图）
http://upload.qq.com/images/13.jpg!0x0 （缩略图）
http://upload.qq.com/images/13.jpg!64x64（缩略图）
http://upload.qq.com/images/13.jpg!320x320 （缩略图）
尺寸自己定义
/usr/local/webserver/nginx/conf/logo.png 这个是水印图
手动测试图片处理在系统里执行
convert src.jpg logo.gif -gravity southeast -geometry +5+10 -composite dest.jpg