項目中需要對已上傳的文本檔案實作預覽操作,發現中文預覽部分亂碼,出現亂碼的代碼如下:
StringBuffer content = new StringBuffer();
try (FtpTemplate template = ftpTemplateFactory.createAndConnect()) {
InputStream inputStream = template.retrieveFileStream(filePath);
byte[] buf = new byte[1024];
int length = 0;
while ((length = inputStream.read(buf)) != -1) {
content.append(new String(buf, 0, length));
}
} catch (IOException e) {
e.printStackTrace();
LOG.error("擷取ftp檔案輸入流異常", e);
throw new BizException("擷取ftp檔案輸入流異常");
}
由于中文字元按照byte讀取再拼接會出現亂碼問題,拷貝檔案不會,是以就會出現部分中文資訊亂碼
解決方案:使用bufferedReader 的readLine方法讀取整行,加"\n"換行
在這裡插入代碼片 StringBuffer content = new StringBuffer();
try (FtpTemplate template = ftpTemplateFactory.createAndConnect()) {
InputStream inputStream = template.retrieveFileStream(filePath);
Reader reader = new InputStreamReader(inputStream);
try(BufferedReader bufferedReader = new BufferedReader(reader)){
String read;
while ((read = bufferedReader.readLine())!=null){
content.append(read+"\n");
}
}catch (Exception e){
LOG.error("讀取檔案異常!", e);
throw new BizException("讀取檔案異常!");
}
} catch (Exception e) {
e.printStackTrace();
LOG.error("擷取ftp檔案輸入流異常", e);
throw new BizException("擷取ftp檔案輸入流異常");
}```