[Spring MVC] - 表单提交

Spring MVC自带的表单标签比较简单，很多时候需要借助EL和JSTL来完成。

下面是一个比较简单的表单提交页面功能：

1、User model

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;

    }

}

2、Controller

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;

    }

}

3、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="/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>

4、测试结果

巴特西

[Spring MVC] - 表单提交

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