ajax从JSP传递对象数组到后台

        今日工作中遇到了需要从JSP传递对象数组到后台的需求，网上辗转找了很多资料，终于解决。苦于网上很多资料不全，故记录下详细解决过程。如下：

JSP：

function addAccount(){debugger;var html = '';var ary = $("#match_account").find("p");var _list = new Array();if(ary.length){for(var i = 0,len = ary.length;i < len;i ++){var account = new Object();html += '<li class="fl mb8" data-id="'+ary[i].id+'" data-sort="0">';html += '<span class="mr8 display-ib" style="background:#eee;padding:0px 5px 6px 5px">';html += '<span data-id="">'+ary[i].innerHTML+'</span>';html += '<a onclick="deleteAccount(this);" href="javascript:;" class="js-btn-remove-tag ml4" style="vertical-align:5px;color:#999;" title="删除">x</a>';html += '</span>';html += '</li>';account.accountId = ary[i].id; account.account = ary[i].innerHTML; _list.push(account);}$.ajax({type: "post",url: "${ctx}/companyAccount/addContributeAccounts",data : {list : JSON.stringify(_list)},async: false,success: function (json) {var result = json.obj.result;if(result != 1){layer.error('添加账号失败.');}}});}$("#contribute_account").append(html);}

关键之处有三：

一，定义数组

var _list = new Array();

二，定义对象，并迭代添加对象属性，最后push进数组

var account = new Object();

account.accountId = ary[i].id; account.account = ary[i].innerHTML; _list.push(account);

三，提交时转换数组对象

data : {list : JSON.stringify(_list)}

后台java：

/** * 添加投稿账号 */@RequestMapping(value = "addContributeAccounts")@ResponseBodypublic JsonResult addContributeAccounts(String list) {JSONArray ary = JSONArray.fromObject(list);if(ary != null && ary.size() > 0){List<RegionContributeAccount> accountList = (List<RegionContributeAccount>)JSONArray.toCollection(ary, RegionContributeAccount.class);for(RegionContributeAccount account : accountList){companyAccountService.insertContributeAccount(account);}}Map<String, Object> obj = new HashMap<String, Object>();obj.put("result", 1);return JsonResult.success(obj);}

后台要点有二，

一，转换ary数组

JSONArray ary = JSONArray.fromObject(list);

二，数组转自定义java对象

List<RegionContributeAccount> accountList = (List<RegionContributeAccount>)JSONArray.toCollection(ary, RegionContributeAccount.class);

自此，便打通前后端任督二脉。