标签：解码 down 中文编码 title 错误 不兼容 ber output tcp
在下载文件时,常见的方法:
public void getuseopdoc(HttpServletResponse response) throws Exception {try {String filename = "某某文件";InputStream inputStream = getClass().getResourceAsStream("/doc/"+filename+".doc");response.reset();response.setCharacterEncoding("utf-8");response.setContentType("application/x-msdownload");response.setHeader("Content-Disposition","attachment; filename="+filename+".doc");IOUtils.copy(inputStream, response.getOutputStream());response.flushBuffer();inputStream.close();} catch (Exception e){log.debug("Request could not be completed at this moment. Please try again.");e.printStackTrace();}}
public void getuseopdoc(HttpServletResponse response) throws Exception {try {String filename = "重庆水库大坝安全监测信息管理平台操作手册（业务版）";InputStream inputStream = getClass().getResourceAsStream("/doc/"+filename+".doc");response.reset();response.setCharacterEncoding("utf-8");response.setContentType("application/x-msdownload");response.setHeader("Content-Disposition","attachment; filename="+new String(filename.getbytes("utf-8"),"iso8859-1")+".doc");IOUtils.copy(inputStream, response.getOutputStream());response.flushBuffer();inputStream.close();} catch (Exception e){log.debug("Request could not be completed at this moment. Please try again.");e.printStackTrace();}}
utf8是Unicode编码的一种优化版,因为unicode对所有字符都编码为2个字节,这导致了标准unicode编码不和任何其他编码兼容. utf-8在Unicode基础上做了一定的修改,对属于ascii的字符依然采用1个字节编码,而其他的字符则采用更多的字节. 这也被称为变长字节编码. utf8这样处理就使得它与iso8859-1兼容了. 然后说说gb2312/gbk. 二者差别在于后者可以表示繁体字,可以看作前者超集. gb2312是中文编码的国标,对所有中文采用2字节编码,相对utf-8来说,他可能还更加的节省空间.笔者在测试上面代码的时候,IE下文件名依然乱码, 原因未知. 不过我在把转换的编码从utf-8改为gb2312后就好了.
protected String getFileName(String filename) {try{HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();if (request.getHeader("User-Agent").indexOf("MSIE") != -1) {return ‘\"‘ + java.net.URLEncoder.encode(filename, "UTF-8") + ‘\"‘;}byte[] bytes = filename.getBytes("UTF-8");StringBuilder buff = new StringBuilder(bytes.length << 2);buff.append("=?UTF-8?Q?");for (byte b : bytes) {int unsignedByte = b & 0xFF;buff.append(‘=‘).append(HEX_CHARS[unsignedByte >> 4]).append(HEX_CHARS[unsignedByte & 0xF]);}return buff.append("?=").toString();}catch(UnsupportedEncodingException e){return filename;}}
标签：解码 down 中文编码 title 错误 不兼容 ber output tcp
原文地址：http://www.cnblogs.com/yTPety/p/6484434.html
