Post方式亂碼：request.setCharacterEncoding(“utf-8”);

GET方式：

1.修改tomcat解碼字符集 conf/server.xml URIEndoing=”utf-8”

2.手動重新編碼

username = URLEncoder.encode(username, “ISO-8859-1”);

username = URLDecoder.decode(username,”utf-8”);

簡化：

username = new String(username.getBytes(“ISO-8859-1”), “utf-8”);