Nginx的Upload上传模块

前段时间做一个项目，需要上传文件，差不多需要20M左右，普通用php处理会比较麻烦，经常超时，而且大量占用资源。于是搜索了下，决定用nginx的upload上传模块来处理。

你可以在这里：http://www.grid.net.ru/nginx/upload.en.html 获取源码。下载以后需要重新编译nginx

./configure –add-module=/usr/local/nginx_upload_module-*
make
make install

重启nginx即可
以下是我的nginx配置文件

前端页面提交的时候直接提交到 http://test.local/upload 即可

server
{
        listen 80;
        server_name test.local;
        index index.php index.shtml index.htm index.html;
        root  /data/app/test.local/wwwroot;
        access_log  off;

        location /upload {
                upload_pass     /index.php?c=uploader&a=upload_server;
                upload_cleanup 400 404 499 500-505;
                upload_store    /data/app/test.local/upload_tmp;
                upload_store_access user:r;
                upload_limit_rate 128k;
                upload_set_form_field "${upload_field_name}_name" $upload_file_name;
                upload_set_form_field "${upload_field_name}_content_type" $upload_content_type;
                upload_set_form_field "${upload_field_name}_path" $upload_tmp_path;
                upload_aggregate_form_field "${upload_field_name}_md5" $upload_file_md5;
                upload_aggregate_form_field "${upload_field_name}_size" $upload_file_size;
                upload_pass_form_field "^.*$";
        }

        location ~ .*.php?$
        {
                include fastcgi_params;
        }

        location ~ .*.(gif|jpg|jpeg|png|bmp|swf)$ {
                expires      30d;
        }

        location ~ .*.(js|css)?$ {
                expires      1d;
        }

}

大概解释一下每个参数

upload_pass 指明了需要后续处理的php地址

upload_cleanup 如果php出现400 404 499 500-505之类的错误，则删除上传的文件

upload_store 上传文件存放地址

upload_store_access 上传文件的访问权限，user:r是指用户可读

upload_limit_rate 上传限速，如果设置为0则表示不限制

upload_set_form_field 设定额外的表单字段。这里有几个可用的变量：
$upload_file_name 文件原始名字
$upload_field_name 表单的name值
$upload_content_type 文件的类型
$upload_tmp_path 文件上传后的地址

upload_aggregate_form_field 额外的变量，在上传成功后生成
$upload_file_md5 文件的MD5校验值
$upload_file_size 文件大小

upload_pass_form_field 从表单原样转到后端的参数，可以正则表达式表示
官方的例子是upload_pass_form_field "^submit$|^description$";意思是把submit，description这两个字段也原样通过upload_pass传递到后端php处理。如果希望把所有的表单字段都传给后端可以用upload_pass_form_field "^.*$";

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