<div class="layui-form-item">

  <label class="layui-form-label">BOM编号</label>
  <div class="layui-input-block">
  <input type="text" class="layui-input" name='code'
   lay-verify="required|unique">
  </div>
 </div>

<script type="text/javascript">
 var form = layui.form;
 form.verify({
  'unique' : function(value, item) {
  var checkValue = value.trim();
  var checkResult='';
  $.ajax({
   url : '/bomManage/checkBomCode',
   type : 'POST',
   data : {
   "newBomCode" : checkValue
   },
   datatype : 'json',
   async : false,
   success : function(result) {
   if (!result) {
    checkResult='BOM编号重复'
   }
   },
   error : function() {
   kok.message("BOM编号验证失败")
   }
  });
  return checkResult
  }
 })

 </script>

 @Override
 public boolean checkBomCode(String newBomCode) {
 BdBomVersionExample example=new BdBomVersionExample();
 Criteria criteria = example.createCriteria();
 criteria.andCodeEqualTo(newBomCode.trim());
 List<BdBomVersion> checks = bdBomVersionMapper.selectByExample(example);
 boolean checkValue=true;
 if(checks.size()>0){
  checkValue=false;
 }
 return checkValue;
 }