向客户机输出不同的表单，以收集客户机数据，在服务器获取数据
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String username = request.getParameter("username");
System.out.println(username);
String password = request.getParameter("password");
System.out.println(password);
String sex = request.getParameter("sex");
System.out.println(sex);
String city = request.getParameter("city");
System.out.println(city);
String likes[] = request.getParameterValues("likes");
for (int i = 0; likes != null && i < likes.length; i++) {
System.out.println(likes[i]);
}
String discription = request.getParameter("discription");
System.out.println(discription);
}public void doG
