解决excel导出csv乱码问题

List<String> dataList = new ArrayList<String>();
//遍历集合，瓶装到stringBuffer

for (String item : dataList) {
exportString.append(item).append("\n");
}

writeJsonCsv(response, exportString.toString());

public void writeJsonCsv(HttpServletResponse response, String json) {
try {
response.setContentType("application/csv;charset=gb18030");
Writer writer = response.getWriter();
writer.write(json);
writer.flush();
writer.close();
} catch (Exception e) {
logger.error("writeJsonCsv异常", e);
}
}