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();

var account = new Object();

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

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

后台java：

/**
	 * 添加投稿账号
	 */
	@RequestMapping(value = "addContributeAccounts")
	@ResponseBody
	public 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);
	}

一，转换ary数组

JSONArray ary = JSONArray.fromObject(list);

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

自此，便打通前后端任督二脉。