只需要将有逗号的内容放在双引号里面即可：

...+",\"" + "xxxxx,xxx" + "\","+....

乱码的时候加上编码格式即可：

PrintWriter printWriter = null;
try {
printWriter = new PrintWriter(new OutputStreamWriter(outputStream, "GBK"));
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}