使用esayUI,jpa,ajax添加，请问哪里错了，谢谢

Controller层
//添加
@RequestMapping("adds")
@ResponseBody
public void addType(String tName,String tCrtate,String tJiao){
AuditType a=new AuditType();
a.settName(tName);
a.settCrtate(tCrtate);
a.settJiao(tJiao);
auditTypeService.addty(a);

}

    //添加
    @Transactional
   public void addty(AuditType auditType){
       auditTypeRep.save(auditType);
   }


        页面HTML
        <script>
    function add() {
        $("#adddlg").dialog("open");
    }

    //添加
    function adds(){
        var d=$("#dg1").datagrid('getSelected');
        var tName=$("#tName");
        var tCrtate=$("#tCrtate");
        var tJiao=$("#tJiao");
        $.ajax({
            url:"adds?tName="+tName+"&&tCrtate="+tCrtate+"&&tJiao="+tJiao,
            dataType:"json",
            type:"post",
            success:function(data){
                if(data>0) {
                    $.messager.alert("系统提示",'新增成功');
                    /*$("#dg1").datagrid("reload");
                    $("#adddlg").dialog("close");*/
                }else{
                    $.messager.alert("系统提示",'新增失败');
                }
            },
           /* error:function (data) {
                $.messager.alert("系统提示",'错误');
            }*/
        })
    }
            </script>

        <div id="tool">
    <a href="javascript:void(0)" class="easyui-linkbutton" data-options="iconCls:'icon-add',plain:true" onclick="add()"  style="width: 100px;">增加</a>
        </div>
        <table  class="easyui-datagrid" id="dg1"  toolbar="#tool" data-options=" url:'selectAllAuditType',fitColumns:true,pagination:true" style="width: 100%;">
    <thead>
    <tr>
        <th data-options="field:'tName',width:402">名称</th>
        <th data-options="field:'tCrtate',width:401">类型</th>
        <th data-options="field:'tJiao',width:401">角色</th>
    </tr>
    </thead>
</table>
<div id="adddlg" class="easyui-dialog" data-options="iconCls:'icon-save',closed:true,buttons:'#fm'"
     style="width:400px;height:200px;">
    <form id="add_form"  method="post">
        <table>
            <tr>
                <td>名称：</td>
                <td><input type="text" name="tName" id="tName"/></td>
            </tr>
            <tr>
                <td>类型：</td>
                <td><input type="text" name="tCrtate" id="tCrtate"/></td>
            </tr>
            <tr>
                <td>角色：</td>
                <td><input type="text" name="tJiao" id="tJiao"/></td>
            </tr>
        </table>
    </form>
</div>
<div id="fm">
    <a href="javascript:void(0)" class="easyui-linkbutton" data-options="iconCls:'icon-save'" onclick="adds()">保存</a>
    <a href="javascript:void(0)" class="easyui-linkbutton" data-options="iconCls:'icon-cancel'">关闭</a>
</div>

你ajax的 url:"adds?tName="+tName+"&&tCrtate="+tCrtate+"&&tJiao="+tJiao,这里错了。
应该是这样：
$.ajax({
url:"adds",
data:{tName: tName,tCrtate: tCrtate,tJiao: tJiao}
dataType:"json",
type:"post",
success:function(data){
if(data>0) {
$.messager.alert("系统提示",'新增成功');
/*$("#dg1").datagrid("reload");
$("#adddlg").dialog("close");*/
}else{
$.messager.alert("系统提示",'新增失败');
}
},
/* error:function (data) {
$.messager.alert("系统提示",'错误');
}*/
})

$.ajax({
            url:"adds?tName="+tName+"&&tCrtate="+tCrtate+"&&tJiao="+tJiao,

这里的url中的&&改成&