修改文件--保存后再上传图片就可以在线预览了
vendor/aliyuncs/oss-sdk-php/src/OSS/Core/MimeTypes.php<?php namespace OSS\Core; /** * Class MimeTypes * * The map of a file's extention name to its corresponding Content-Type value in the file upload request. * If the file extention name is not predefined in this class, getMimetype() returns null. * * @package OSS\Core */ class MimeTypes { /** * Get the content-type value of http header from the file's extension name. * * @param string $name Default file extension name. * @return string content-type */ public static function getMimetype($name) { $parts = explode('.', $name); if (count($parts) > 1) { $ext = strtolower(end($parts)); if (isset(self::$mime_types[$ext])) { return self::$mime_types[$ext]; } } return null; } private static $mime_types = array( 'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', 'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template', 'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template', 'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow', 'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation', 'sldx' => 'application/vnd.openxmlformats-officedocument.presentationml.slide', 'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document', 'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template', 'xlam' => 'application/vnd.ms-excel.addin.macroEnabled.12', 'xlsb' => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12', 'apk' => 'application/vnd.android.package-archive', 'hqx' => 'application/mac-binhex40', 'cpt' => 'application/mac-compactpro', 'doc' => 'application/msword', 'ogg' => 'audio/ogg', 'pdf' => 'application/pdf', 'rtf' => 'text/rtf', 'mif' => 'application/vnd.mif', 'xls' => 'application/vnd.ms-excel', 'ppt' => 'application/vnd.ms-powerpoint', 'odc' => 'application/vnd.oasis.opendocument.chart', 'odb' => 'application/vnd.oasis.opendocument.database', 'odf' => 'application/vnd.oasis.opendocument.formula', 'odg' => 'application/vnd.oasis.opendocument.graphics', 'otg' => 'application/vnd.oasis.opendocument.graphics-template', 'odi' => 'application/vnd.oasis.opendocument.image', 'odp' => 'application/vnd.oasis.opendocument.presentation', 'otp' => 'application/vnd.oasis.opendocument.presentation-template', 'ods' => 'application/vnd.oasis.opendocument.spreadsheet', 'ots' => 'application/vnd.oasis.opendocument.spreadsheet-template', 'odt' => 'application/vnd.oasis.opendocument.text', 'odm' => 'application/vnd.oasis.opendocument.text-master', 'ott' => 'application/vnd.oasis.opendocument.text-template', 'oth' => 'application/vnd.oasis.opendocument.text-web', 'sxw' => 'application/vnd.sun.xml.writer', 'stw' => 'application/vnd.sun.xml.writer.template', 'sxc' => 'application/vnd.sun.xml.calc', 'stc' => 'application/vnd.sun.xml.calc.template', 'sxd' => 'application/vnd.sun.xml.draw', 'std' => 'application/vnd.sun.xml.draw.template', 'sxi' => 'application/vnd.sun.xml.impress', 'sti' => 'application/vnd.sun.xml.impress.template', 'sxg' => 'application/vnd.sun.xml.writer.global', 'sxm' => 'application/vnd.sun.xml.math', 'sis' => 'application/vnd.symbian.install', 'wbxml' => 'application/vnd.wap.wbxml', 'wmlc' => 'application/vnd.wap.wmlc', 'wmlsc' => 'application/vnd.wap.wmlscriptc', 'bcpio' => 'application/x-bcpio', 'torrent' => 'application/x-bittorrent', 'bz2' => 'application/x-bzip2', 'vcd' => 'application/x-cdlink', 'pgn' => 'application/x-chess-pgn', 'cpio' => 'application/x-cpio', 'csh' => 'application/x-csh', 'dvi' => 'application/x-dvi', 'spl' => 'application/x-futuresplash', 'gtar' => 'application/x-gtar', 'hdf' => 'application/x-hdf', 'jar' => 'application/java-archive', 'jnlp' => 'application/x-java-jnlp-file', 'js' => 'application/javascript', 'json' => 'application/json', 'ksp' => 'application/x-kspread', 'chrt' => 'application/x-kchart', 'kil' => 'application/x-killustrator', 'latex' => 'application/x-latex', 'rpm' => 'application/x-rpm', 'sh' => 'application/x-sh', 'shar' => 'application/x-shar', 'swf' => 'application/x-shockwave-flash', 'sit' => 'application/x-stuffit', 'sv4cpio' => 'application/x-sv4cpio', 'sv4crc' => 'application/x-sv4crc', 'tar' => 'application/x-tar', 'tcl' => 'application/x-tcl', 'tex' => 'application/x-tex', 'man' => 'application/x-troff-man', 'me' => 'application/x-troff-me', 'ms' => 'application/x-troff-ms', 'ustar' => 'application/x-ustar', 'src' => 'application/x-wais-source', 'zip' => 'application/zip', 'm3u' => 'audio/x-mpegurl', 'ra' => 'audio/x-pn-realaudio', 'wav' => 'audio/x-wav', 'wma' => 'audio/x-ms-wma', 'wax' => 'audio/x-ms-wax', 'pdb' => 'chemical/x-pdb', 'xyz' => 'chemical/x-xyz', 'bmp' => 'image/bmp', 'gif' => 'image/gif', 'ief' => 'image/ief', 'png' => 'image/jpg',//'image/png', 'wbmp' => 'image/vnd.wap.wbmp', 'ras' => 'image/x-cmu-raster', 'pnm' => 'image/x-portable-anymap', 'pbm' => 'image/x-portable-bitmap', 'pgm' => 'image/x-portable-graymap', 'ppm' => 'image/x-portable-pixmap', 'rgb' => 'image/x-rgb', 'xbm' => 'image/x-xbitmap', 'xpm' => 'image/x-xpixmap', 'xwd' => 'image/x-xwindowdump', 'css' => 'text/css', 'rtx' => 'text/richtext', 'tsv' => 'text/tab-separated-values', 'jad' => 'text/vnd.sun.j2me.app-descriptor', 'wml' => 'text/vnd.wap.wml', 'wmls' => 'text/vnd.wap.wmlscript', 'etx' => 'text/x-setext', 'mxu' => 'video/vnd.mpegurl', 'flv' => 'video/x-flv', 'wm' => 'video/x-ms-wm', 'wmv' => 'video/x-ms-wmv', 'wmx' => 'video/x-ms-wmx', 'wvx' => 'video/x-ms-wvx', 'avi' => 'video/x-msvideo', 'movie' => 'video/x-sgi-movie', 'ice' => 'x-conference/x-cooltalk', '3gp' => 'video/3gpp', 'ai' => 'application/postscript', 'aif' => 'audio/x-aiff', 'aifc' => 'audio/x-aiff', 'aiff' => 'audio/x-aiff', 'asc' => 'text/plain', 'atom' => 'application/atom+xml', 'au' => 'audio/basic', 'bin' => 'application/octet-stream', 'cdf' => 'application/x-netcdf', 'cgm' => 'image/cgm', 'class' => 'application/octet-stream', 'dcr' => 'application/x-director', 'dif' => 'video/x-dv', 'dir' => 'application/x-director', 'djv' => 'image/vnd.djvu', 'djvu' => 'image/vnd.djvu', 'dll' => 'application/octet-stream', 'dmg' => 'application/octet-stream', 'dms' => 'application/octet-stream', 'dtd' => 'application/xml-dtd', 'dv' => 'video/x-dv', 'dxr' => 'application/x-director', 'eps' => 'application/postscript', 'exe' => 'application/octet-stream', 'ez' => 'application/andrew-inset', 'gram' => 'application/srgs', 'grxml' => 'application/srgs+xml', 'gz' => 'application/x-gzip', 'htm' => 'text/html', 'html' => 'text/html', 'ico' => 'image/x-icon', 'ics' => 'text/calendar', 'ifb' => 'text/calendar', 'iges' => 'model/iges', 'igs' => 'model/iges', 'jp2' => 'image/jp2', 'jpe' => 'image/jpg',//'image/jpeg', 'jpeg' => 'image/jpg',//'image/jpeg', 'jpg' => 'image/jpg',//'image/jpeg', 'kar' => 'audio/midi', 'lha' => 'application/octet-stream', 'lzh' => 'application/octet-stream', 'm4a' => 'audio/mp4a-latm', 'm4p' => 'audio/mp4a-latm', 'm4u' => 'video/vnd.mpegurl', 'm4v' => 'video/x-m4v', 'mac' => 'image/x-macpaint', 'mathml' => 'application/mathml+xml', 'mesh' => 'model/mesh', 'mid' => 'audio/midi', 'midi' => 'audio/midi', 'mov' => 'video/quicktime', 'mp2' => 'audio/mpeg', 'mp3' => 'audio/mpeg', 'mp4' => 'video/mp4', 'mpe' => 'video/mpeg', 'mpeg' => 'video/mpeg', 'mpg' => 'video/mpeg', 'mpga' => 'audio/mpeg', 'msh' => 'model/mesh', 'nc' => 'application/x-netcdf', 'oda' => 'application/oda', 'ogv' => 'video/ogv', 'pct' => 'image/pict', 'pic' => 'image/pict', 'pict' => 'image/pict', 'pnt' => 'image/x-macpaint', 'pntg' => 'image/x-macpaint', 'ps' => 'application/postscript', 'qt' => 'video/quicktime', 'qti' => 'image/x-quicktime', 'qtif' => 'image/x-quicktime', 'ram' => 'audio/x-pn-realaudio', 'rdf' => 'application/rdf+xml', 'rm' => 'application/vnd.rn-realmedia', 'roff' => 'application/x-troff', 'sgm' => 'text/sgml', 'sgml' => 'text/sgml', 'silo' => 'model/mesh', 'skd' => 'application/x-koan', 'skm' => 'application/x-koan', 'skp' => 'application/x-koan', 'skt' => 'application/x-koan', 'smi' => 'application/smil', 'smil' => 'application/smil', 'snd' => 'audio/basic', 'so' => 'application/octet-stream', 'svg' => 'image/svg+xml', 't' => 'application/x-troff', 'texi' => 'application/x-texinfo', 'texinfo' => 'application/x-texinfo', 'tif' => 'image/tiff', 'tiff' => 'image/tiff', 'tr' => 'application/x-troff', 'txt' => 'text/plain', 'vrml' => 'model/vrml', 'vxml' => 'application/voicexml+xml', 'webm' => 'video/webm', 'webp' => 'image/webp', 'wrl' => 'model/vrml', 'xht' => 'application/xhtml+xml', 'xhtml' => 'application/xhtml+xml', 'xml' => 'application/xml', 'xsl' => 'application/xml', 'xslt' => 'application/xslt+xml', 'xul' => 'application/vnd.mozilla.xul+xml', ); }修改之前的图片
可直接再阿里云文件管理内将文件http头修改为Content-Type:image/jpg
参考文章：https://blog.csdn.net/weixin_43770545/article/details/106930464