日常开发中常用的produces 参数是：produces = {"application/json;charset=UTF-8"}
如果要实现一些特殊的接口和需求，比如导出各种不同类型的文件，只需改变produces 参数即可。
注*：produces参数是一个数组，可以接受多个不同的参数类型，如下：
| 导出文件类型 | produces 参数 |
| 'doc' | application/msword;charset=UTF-8 |
| 'bin' | application/octet-stream;charset=UTF-8 |
| 'exe' | application/octet-stream;charset=UTF-8 |
| 'so' | application/octet-stream;charset=UTF-8 |
| 'dll' | application/octet-stream;charset=UTF-8 |
| 'pdf' | application/pdf;charset=UTF-8 |
| 'ai' | application/postscript;charset=UTF-8 |
| 'xls' | application/vnd.ms-excel;charset=UTF-8 |
| 'ppt' | application/vnd.ms-powerpoint;charset=UTF-8 |
| 'dir' | application/x-director;charset=UTF-8 |
| 'js' | application/x-javascript;charset=UTF-8 |
| 'swf' | application/x-shockwave-flash;charset=UTF-8 |
| 'xhtml' | application/xhtml+xml;charset=UTF-8 |
| 'xht' | application/xhtml+xml;charset=UTF-8 |
| 'zip' | application/zip;charset=UTF-8 |
| 'mid' | audio/midi;charset=UTF-8 |
| 'midi' | audio/midi;charset=UTF-8 |
| 'mp3' | audio/mpeg;charset=UTF-8 |
| 'rm' | audio/x-pn-realaudio;charset=UTF-8 |
| 'rpm' | audio/x-pn-realaudio-plugin;charset=UTF-8 |
| 'wav' | audio/x-wav;charset=UTF-8 |
| 'bmp' | image/bmp;charset=UTF-8 |
| 'gif' | image/gif;charset=UTF-8 |
| 'jpeg' | image/jpeg;charset=UTF-8 |
| 'jpg' | image/jpeg;charset=UTF-8 |
| 'png' | image/png;charset=UTF-8 |
| 'css' | text/css;charset=UTF-8 |
| 'html' | text/html;charset=UTF-8 |
| 'htm' | text/html;charset=UTF-8 |
| 'txt' | text/plain;charset=UTF-8 |
| 'xsl' | text/xml;charset=UTF-8 |
| 'xml' | text/xml;charset=UTF-8 |
| 'mpeg' | video/mpeg;charset=UTF-8 |
| 'mpg' | video/mpeg;charset=UTF-8 |
| 'avi' | video/x-msvideo;charset=UTF-8 |
| 'movie' | video/x-sgi-movie',;charset=UTF-8 |
有问题联系我即可。
