Java下載檔案時處理中文 使用URLEncoder編碼後 空格變+號的問題
阿新 • • 發佈：2019-02-12
解決轉換空格
String fileName = StringUtils.trim(file.getName());
String formatFileName = encodingFileName(name);//在後面定義方法encodingFileName(String fileName);
response.setHeader("Content-Disposition", "attachment; filename=" + formatFileName );
//處理檔名中出現的空格
//其中%20是空格在UTF-8下的編碼
public static String encodingFileName(String fileName) {
String returnFileName = "";
try {
returnFileName = URLEncoder.encode(fileName, "UTF-8");
returnFileName = StringUtils.replace(returnFileName, "+", "%20");
if (returnFileName.length() > 150) {
returnFileName = new String(fileName.getBytes("GB2312"), "ISO8859-1");
returnFileName = StringUtils.replace(returnFileName, " ", "%20");
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
if (log.isWarnEnabled()) {
log.info("Don't support this encoding ...");
}
}
return returnFileName;
String fileName = StringUtils.trim(file.getName());
String formatFileName = encodingFileName(name);//在後面定義方法encodingFileName(String fileName);
response.setHeader("Content-Disposition", "attachment; filename=" + formatFileName );
//處理檔名中出現的空格
//其中%20是空格在UTF-8下的編碼
public static String encodingFileName(String fileName) {
String returnFileName = "";
try {
returnFileName = URLEncoder.encode(fileName, "UTF-8");
returnFileName = StringUtils.replace(returnFileName, "+", "%20");
if (returnFileName.length() > 150) {
returnFileName = new String(fileName.getBytes("GB2312"), "ISO8859-1");
returnFileName = StringUtils.replace(returnFileName, " ", "%20");
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
if (log.isWarnEnabled()) {
log.info("Don't support this encoding ...");
}
}
return returnFileName;
}
或者：
fileName = URLEncoder.encode(fileName, "utf-8")
fileName = fileName.Replace("+", "%20"); encode後替換 解決空格問題
response.addHeader("Content-Disposition",
"attachment;filename=" + fileName, "utf-8");