<form action="save-user-info" method="post">
 <span>帐号：</span><input type="text" name="username"><br>
 <span>密码：</span><input type="text" name="password"><br>
 <input type="submit" value="保存">
</form>

public User() {}

public void setUsername(String username) {
  this.username = username;
}

public void setPassword(String password) {
  this.password = password;
}

@RequestMapping(value="/save-user-info")
public String saveUser(SsbiUser user) {
  System.out.println(user.toString());
  return "user-info";
}