问题描述：Java应用下载文件功能，输出文件名中的中文乱码
测试环境：tomcat，websphere6.1
方法一：
response.setContentType("application/x-download");
fileName = URLDecoder.decode(fileName, "utf-8");
fileName= java.net.URLEncoder.encode(fileName,"utf-8");
response.setHeader("Content-Disposition", "attachment; filename=\""+ new String((fileName + ".zip").getBytes(),"UTF-8") +"\"");
方法二：
response.setHeader("Content-Disposition", "attachment;filename=" + toUtf8String(filename));
public static String toUtf8String(String s) {
StringBuffer sb = new StringBuffer();
for (int i=0;i<s.length();i++) {
char c = s.charAt(i);
if (c >= 0 && c <= 255) {
sb.append(c);
} else {
byte[] b;
try {
b = Character.toString(c).getBytes("utf-8");
} catch (Exception ex) {
log.error(ex);
b = new byte[0];
}
for (int j = 0; j < b.length; j++) {
int k = b[j];
if (k < 0) k += 256;
sb.append("%" + Integer.toHexString(k).toUpperCase());
}
}
}
return sb.toString();
}
