response.setContentType("") 小抄本
response.setContentType("text/plain");<option value="image/bmp">BMP</option> <option value="image/gif">GIF</option> <option value="image/jpeg">JPEG</option> <option value="image/tiff">TIFF</option> <option value="image/x-dcx">DCX</option> <option value="image/x-pcx">PCX</option> <option value="text/html">HTML</option> <option value="text/plain">TXT</option> <option value="text/xml">XML</option> <option value="application/afp">AFP</option> <option value="application/pdf">PDF</option> <option value="application/rtf">RTF</option> <option value="application/msword">MSWORD</option> <option value="application/vnd.ms-excel">MSEXCEL</option> <option value="application/vnd.ms-powerpoint">MSPOWERPOINT</option> <option value="application/wordperfect5.1">WORDPERFECT</option> <option value="application/vnd.lotus-wordpro">WORDPRO</option> <option value="application/vnd.visio">VISIO</option> <option value="application/vnd.framemaker">FRAMEMAKER</option> <option value="application/vnd.lotus-1-2-3">LOTUS123</option>