UTF-8

response.setContentType("application/octet-stream; charset=UTF-8");

//response为HttpServletResponse对象
response.setContentType("application/vnd.ms-excel;charset=utf-8");

byte[] base64Token = header.substring(6).getBytes("UTF-8");

map.put("redirect_uri", URLEncoder.encode(REDIRECT_URL, "UTF-8"));

resultString = EntityUtils.toString(response.getEntity(), "UTF-8");

httpPost.setEntity(new UrlEncodedFormEntity(list, "UTF-8"));

JSONObject jsonObject = JSON.parseObject(EntityUtils.toString(entity, "UTF-8"));

repositoryService.addModelEditorSource(model.getId(), editorNode.toString().getBytes("utf-8"));

key.getBytes("UTF-8");

BufferedReader br = new BufferedReader(new InputStreamReader(stream, "UTF-8"));

fileName = new String(fileName.getBytes("UTF-8"), "iso-8859-1");

new String(str.getBytes("utf-8"), "gbk");

 new String(str.getBytes("gbk"), "utf-8");

String msg = new String(jsonObject.getString("msg").getBytes("ISO-8859-1"), "UTF-8");

Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outFile), "utf-8"), 10240);