輸入流的編碼
比如，在上傳文件的時候，我們知道文件的編碼是GB2312

??????? String fileEnc="GB2312";

?? ?byte[] data = ff.getFileData();
?? ?InputStream in = new ByteArrayInputStream(data);
?? ??? ??? ?
?? ??? ??? ?// very very important
?? ?InputStreamReader isr = new InputStreamReader(in,fileEnc);

?? ?BufferedReader br = new BufferedReader(isr);

這樣就可以取得一個GB2312的文件輸入流

所以，默認的輸出是UTF8，比如

?? ??? ??? ?FileWriter w = new FileWriter(f);
?? ??? ??? ?log.info("the new file encoding is : "+w.getEncoding());
?? ??? ??? ?
?? ??? ??? ?while ((str = br.readLine()) != null) {
?? ??? ??? ??? ?w.write(str + "\n");
?? ??? ??? ??? ?log.info("line content : " + str);
?? ??? ??? ??? ?
?? ??? ??? ??? ?lines.put(str);
?? ??? ??? ??? ?//TODO
//?? ??? ??? ??? ?lines.put(encodeString(str, fileEnc));
?? ??? ??? ?}

那么輸出的文件格式UTF-8

如果你想輸出GB2312編碼的文件，可以用下面的方法
?? ??? ??? ?
?? ??? ??? ?FileOutputStream out = new FileOutputStream(f);
?? ??? ??? ?
?? ??? ??? ?OutputStreamWriter www = new OutputStreamWriter(out,"GB2312");
?? ??? ??? ?
?? ??? ??? ?log.info("the new file encoding is : "+w.getEncoding());
?? ??? ??? ?
?? ??? ??? ?while ((str = br.readLine()) != null) {
?? ??? ??? ??? ?www.write(str + "\n");
?? ??? ??? ??? ?log.info("line content : " + str);
?? ??? ??? ??? ?
?? ??? ??? ??? ?lines.put(str);
?? ??? ??? ??? ?//TODO
//?? ??? ??? ??? ?lines.put(encodeString(str, fileEnc));
?? ??? ??? ?}

?? ??? ??? ?




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