package com.my.controller.bean;import java.util.Date;import java.util.List;import javax.validation.constraints.Future;import javax.validation.constraints.Max;import javax.validation.constraints.Min;import javax.validation.constraints.NotNull;import org.hibernate.validator.constraints.Email;import org.hibernate.validator.constraints.Length;import org.hibernate.validator.constraints.NotEmpty;public class User {        private long id;        @Length(min=2, max=50, message="User name length range = 2-50")    private String name;        @Future(message="时间不能小于今天")    private Date createTime;        @NotEmpty(message="Customer不能为空")    private List<Customer> customers;        @NotNull(message="Girl不能为空")    private boolean girl;        private String[] cbx;        @NotNull(message="Age can NOT be Null")    @Min(value=18, message="最小18岁")    @Max(value=100, message="最大100岁")    private int age;        @Email(message="Email格式不正确")    private String email;        public long getId() {        return id;    }    public void setId(long id) {        this.id = id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public Date getCreateTime() {        return createTime;    }    public void setCreateTime(Date createTime) {        this.createTime = createTime;    }    public List<Customer> getCustomers() {        return customers;    }    public void setCustomers(List<Customer> customers) {        this.customers = customers;    }    public boolean isGirl() {        return girl;    }    public void setGirl(boolean girl) {        this.girl = girl;    }    public String[] getCbx() {        return cbx;    }    public void setCbx(String[] cbx) {        this.cbx = cbx;    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }    public String getEmail() {        return email;    }    public void setEmail(String email) {        this.email = email;    }}

package com.my.controller;import java.util.ArrayList;import java.util.Date;import java.util.List;import javax.validation.Valid;import org.springframework.stereotype.Controller;import org.springframework.validation.BindingResult;import org.springframework.validation.FieldError;import org.springframework.web.bind.annotation.ModelAttribute;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.servlet.ModelAndView;import com.my.controller.bean.Customer;import com.my.controller.bean.User;@Controller@RequestMapping(value="/post")public class TestPostController {        private static List<User> users = new ArrayList<User>();    {        //-----------------------------------------------        // 设置Entity        // -----------------------------------------------        users.add(new User());        User user = users.get(0);        user.setId(1);        user.setName("Robin");        user.setCreateTime(new Date());        user.setGirl(true);        user.setCbx(new String[] {"1", "2", "3"});        user.setAge(18);        user.setEmail("abcd@abc.com");                user.setCustomers(new ArrayList<Customer>());        Customer customer1 = new Customer();        customer1.setId(1);        customer1.setCompany("Company - 1");        customer1.setCreateTime(new Date());        customer1.setUser(user);        user.getCustomers().add(customer1);                Customer customer2 = new Customer();        customer2.setId(1);        customer2.setCompany("Company - 2");        customer2.setCreateTime(new Date());        customer2.setUser(user);        user.getCustomers().add(customer2);    }        @RequestMapping    public ModelAndView index() {        ModelAndView view = new ModelAndView("TestPost/index");        view.addObject("users", users);        return view;    }        @RequestMapping(value="/addUser", method=RequestMethod.POST)    public ModelAndView addUser(@ModelAttribute @Valid User user, BindingResult result) {        ModelAndView view = new ModelAndView("redirect:/post");                if(result.hasErrors()) {            List<FieldError> errors = result.getFieldErrors();            for(FieldError err : errors) {                System.out.println("ObjectName:" + err.getObjectName() + "\tFieldName:" + err.getField()                        + "\tFieldValue:" + err.getRejectedValue() + "\tMessage:" + err.getDefaultMessage());            }            view.addObject("users", users);            return view;        }                user.setId(users.size() + 1);        user.getCustomers().get(0).setId(1);        user.getCustomers().get(0).setUser(user);        users.add(user);        view.addObject("users", users);        return view;    }    }

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><%@ page import="com.my.controller.bean.*" %><%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> <%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%><%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %><%@ taglib prefix="st" uri="http://www.springframework.org/tags" %><%@ taglib uri="http://www.springframework.org/tags/form" prefix="sf" %><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Index</title></head><body>    <fmt:setLocale value="zh_cn" />    <form action="<st:url value="http://www.mamicode.com//post/addUser"></st:url>" method="post">        <c:forEach items="${users}" var="user">            User:${user.name}<br/>            Create time:<fmt:formatDate value="${user.createTime}"/><br/>            Is girl:            <c:choose>                <c:when test="${user.girl}">Yes</c:when>                <c:when test="${!user.girl}">No</c:when>                <c:otherwise>N/A</c:otherwise>            </c:choose>            <br/>            Checkboxs:            <c:forEach items="${user.cbx}" var="item">                ${item},            </c:forEach>            <br/>            Age:${user.age}<br/>            E-mail:${user.email}<br/>            <hr/>                    <table style="width:100%;border:1px solid #ccc;">                <thead>                    <tr style="text-align:left; background-color:#eee;">                        <th>Company name</th>                        <th>User</th>                        <th>Create time</th>                    </tr>                </thead>                <tbody>                    <c:forEach items="${user.customers}" var="item">                    <tr>                        <td>${item.company}</td>                        <td>${item.user.name}</td>                        <td><fmt:formatDate value="${item.createTime}" pattern="yyyy-MM-dd"/></td>                    </tr>                    </c:forEach>                </tbody>            </table>            <hr/>        </c:forEach>                User name:        <input type="text" name="name" id="name" /><br/>        Is girl:        <input type="radio" name="girl" id="isGirl" value="true" checked="checked" /><label for="isGirl">Yes</label>        <input type="radio" name="girl" id="noGirl" value="false" /><label for="noGirl">No</label><br/>        Checkboxs:        <input type="checkbox" name="cbx" id="cbx1" value="1" /><label for="cbx1">1</label>        <input type="checkbox" name="cbx" id="cbx2" value="2" /><label for="cbx2">2</label>        <input type="checkbox" name="cbx" id="cbx3" value="3" /><label for="cbx3">3</label>        <br/>        Age:<input type="text" name="age" id="age" /><br/>        E-mail:<input type="text" name="email" id="email" /><br/>        Create time:        <input type="text" name="createTime" id="createTime" /><br/>        Company:        <input type="text" name="customers[0].company" id="customers[0].company" /><br/>        <input type="submit" value="add" />        <sf:errors path="*"></sf:errors>    </form>    <hr/></body></html>