Java如何实现form表单提交的数据自动对应实体类（源码）

原文出自：https://blog.csdn.net/seesun2012

原生Java+JQuery form表单serializeArray提交自动对应java实体，这是一个实际的例子：

html界面：

<form id="data-form">
    秒杀一：<input class="td_input" name="killA" type="number"><br>
    秒杀二：<input class="td_input" name="killB" type="number"><br>
    秒杀三：<input class="td_input" name="killC" type="number"><br>
    秒杀四：<input class="td_input" name="killD" type="number"><br>
</form>
<div>
    <span id = "killApple" style="padding: 20px;">开始秒杀</span>
</div>

JS脚本，表单序列化 + 异步请求：

//点击提交，发送异步请求
$("#killApple").click(function(content){
	//获取表单数据，并序列化
	var formData = $("#flop-form").serializeArray();
	//将序列化数据转为对象
	var formObject = {};
	for (var item in formData) {
	    formObject[formData[item].name] = formData[item].value;
	}
	formData = JSON.stringify(formObject);
	//发送JSON到服务器
	$.ajax({
	    type: "POST",
	    url: "/kill/killOrder",
	    contentType: "application/json",  //一定要设置这一行，很关键
	    data : formData,
	    datatype: "json",
	    success: function (data) {
	        alert(JSON.stringify(data));
	    }
	});
});

秒杀下单控制器：

package com.seesun2012.controller;

import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import com.seesun2012.dao.entity.KillOrder;
import com.seesun2012.utils.Result;

/**
 * 【秒杀下单】控制器
 *
 * @author seesun2012@163.com
 *
 */
@Controller
@RequestMapping("/kill")
public class GameController extends BaseController{

    /**
     * 衬衫秒杀
     */
    @RequestMapping(value = "/killApple", method = RequestMethod.POST, consumes = "application/json")
    @ResponseBody
    public Result killOrder(HttpServletRequest request, @RequestBody KillOrder ko){
    	try {
    	    //具体业务实现
            return Result.build(200, "秒杀成功");
    	} catch (Exception e) {
            return Result.build(500, e.getMessage());
        }
    }

}

秒杀实体Bean：

package com.seesun2012.dao.entity;

/**
 * 秒杀参数实体
 */
public class KillOrder {

    private Integer killA;
    private Integer killB;
    private Integer killC;
    private Integer killD;

    //TODO GET、SET方法...

}

秒杀结果返回工具类：

package com.seesun2012.utils;

import java.io.Serializable;
import java.util.HashMap;

/**
 * 统一返回结果类
 *
 * @author seesun2012@163.com
 *
 *//
public class Result extends HashMap<String, Object> implements Serializable {

	private static final long serialVersionUID = 1L;
	public static final Result SUCCEED = new Result(0, "操作成功");

	public Result(int status, String massage) {
		super();
		this.put("status", status).put("message", massage);
	}

	public Result put(String key, Object value) {
		super.put(key, value);
		return this;
	}

	public static Result build(int i, String message) {
		return new Result(i, message);
	}

}