1、第一种方式通过bean，后台需封装成json数据格式，前台paseJSON();

public void checkCode() {

ResponseMessage rm = new ResponseMessage(true,null);

String hql = "from TblWrPeople t where t.wrPeopleCode='"+code+"' and t.delFlag='"+Constants.DELFLAGA+"'";

List<TblWrPeople> tblWrPeopleList = (List<TblWrPeople>)this.workResService.find(hql);

if (tblWrPeopleList != null && tblWrPeopleList.size() > 0) {

rm.setSuccess(false);

rm.setErrorMsg("数据库中已存在该代号,请重新录入");

this.responseAJAX(JSONObject.fromObject(rm).toString(),getResponse());

}

}

前台获取：

function checkCode() {

var code = $("#wrPeopleCode").val();

$.post('workRes_checkCode.action',{"code":code},function(result){

result = $.parseJSON(result);

if (result.success == false){

alert(result.errorMsg);

$("#wrPeopleCode").val('');

}

});

}

2、后台直接返回一个String类型的字符串，前台的话不再需要parseJSON,直接获取result即可；