validationengine ajax验证

来源：互联网发布：亚马逊海外购知乎编辑：程序博客网时间：2024/05/16 10:02

htm代码

<input type="text" value="" class="validate[required,maxSize[20]]" id="dbip" name="dbip"/>

<input type="text" value="" class="validate[ajax[ajaxDbNameCheck]]" id="dbname" name="dbname"/>

jquery.validationEngine.js中加入

"ajaxDbNameCheck" : {"extraDataDynamic" : "#dbip","url" : "dbnameCheck.do","alertText" : "* 该数据库名已经存在","alertTextOk" : "* 数据库名可以使用","alertTextLoad" : "* 正在验证中，请稍等..."}

extraDataDynamic是可选的，就是传递参数到后台用的

后台代码

@RequestMapping("dbnameCheck.do")public String dbnameCheck(HttpServletRequest request,HttpServletResponse response, ModelMap model){String fieldId = request.getParameter("fieldId");String fieldValue = request.getParameter("fieldValue");String dbip=request.getParameter("dbip");PrintWriter pw=response.getWriter();boolean result=dblistServiceNew.findObjectByName(fieldValue,dbip);/** * 结果为true 表存在该结果，grouname不可用 返回false到前台 */if(result==true){pw.write("[\"" + fieldId + "\"," + false + "]");}if(result==false){pw.write("[\"" + fieldId + "\"," + true+ "]");}return null; }