springMVC准确定位多个参数对象的属性

servlet类：

@Controller
public class MyController01 {

    @InitBinder("customer")
    public void initBinder1(WebDataBinder binder){
        binder.setFieldDefaultPrefix("customer.");
    }
    @InitBinder("user")
    public void initBinder2(WebDataBinder binder){
        binder.setFieldDefaultPrefix("user.");
    }
    
    @RequestMapping(value = "/test.do", method = RequestMethod.POST)
    public ModelAndView firstTest(Customer customer, User user) {

        System.out.println(user == null ? null : "  " + user.getPassword());
        System.out.println("成功到达服务器! username: " + customer.getUsername()
                + " password:" + customer.getPassword());
        return null;
    }

}

jsp页面：

<form action="test.do" method="post"  name="login">
            <span>username:</span>
            <input type="text" name="customer.username">
            <br />
            <span>password:</span>
            <input type="password" name="user.password">
            <input type="submit" value="commit">
        </form>