可以在業務控制方法中書寫0個或多個模型來收集客戶端的參數

1） 如果多個模型中有相同的屬性時，可以用user.name或admin.name來收集客戶端參數

2） 用一個新的模型將User和Admin再封裝一次

public class User {
    private Integer id;
    private String name;
    private Double sal;
    private Date hiredate;
    public User(){}
    public Integer getId() {
        return
 
 id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public Double getSal() {
        return sal;
    }
    public void setSal(Double sal) {
        
 
this.sal = sal;
    }
    public Date getHiredate() {
        return hiredate;
    }
    public void setHiredate(Date hiredate) {
        this.hiredate = hiredate;
    }
    @Override
    public String toString() {
        return this.id + ":" + this.name + ":" + this.sal + ":" + this.hiredate;
    }
}
 

public class Bean {
    private User user;
    private Admin admin;
    public Bean(){}
    public User getUser() {
        return user;
    }
    public void setUser(User user) {
        this.user = user;
    }
    public Admin getAdmin() {
        return admin;
    }
    public void setAdmin(Admin admin) {
        this.admin = admin;
    }
}

@Controller
@RequestMapping(value = "/person")
public class PersonAction {
    @InitBinder
    protected void initBinder(HttpServletRequest request,ServletRequestDataBinder binder) throws Exception {
        binder.registerCustomEditor(
                Date.class, 
                new CustomDateEditor(new SimpleDateFormat("yyyy-MM-dd"),true));
    }
    @RequestMapping(value = "/add", method = RequestMethod.POST)
    public String add(Bean bean,Model model) throws Exception {
        System.out.println(bean.getUser());
        System.out.println(bean.getAdmin());
        System.out.println("PersonAction::add()::POST");
        model.addAttribute("bean",bean);
        return "/register.jsp";
    }
}

register.jsp

 普通用戶
    <form action="${pageContext.request.contextPath}/person/add.action" method="POST">
        編號：<input type="text" name="user.id" value="${bean.user.id}"/><br/>
        姓名：<input type="text" name="user.name" value="${bean.user.name}"/><br/>
        薪水：<input type="text" name="user.sal" value="${bean.user.sal}"/><br/>
        入職時間：<input type="text" name="user.hiredate" value=‘<fmt:formatDate value="${bean.user.hiredate}" type="both" />‘/><br/>
        <input type="submit" value="註冊"/>
    </form>

在業務控制方法中寫入包裝User的模型來收集參數