HTML 通过JSON传数据到后台

Question

$(function(){
    $('#confirm').click(function(){
        var password=$('#password').val();
        var re_password=$('#re_password').val();
       if(password.length<=0){
          alert("密码不能为空");
       }else if(password!=re_password){
        alert("两次密码不一致")
       }
     var datas ={"password":password};
     console.log("datas"+datas.password);
   $.ajax({
            url:'/settingpassword.xhtml',
            type:'post',
            contentType: "application/json;charset=utf-8",
            data:datas,
            error:function(data){
                alert(data.password);
            }

         })

    })
})

ajax date 为空
     ```

@RequestMapping("/settingpassword.xhtml")
public void settingpassword(@RequestParam("password") String password,HttpServletRequest request){

    Integer er=null;
    JSONArray jsonArray=JSONArray.fromObject(password);
    System.out.println( " 参数  ----  "+ jsonArray);
    Iterator<Object> it = jsonArray.iterator();
    while(it.hasNext()){
        JSONObject obj = (JSONObject)it.next();
        System.out.println("password:"+obj.get("password"));
        er=(Integer)  obj.get("agentHouseID");
    }


    System.out.println("你好");
 }
    后端

Answer 1

正确写法：
$.ajax({
......
});

去掉 ajax里面的function()，还有method应该写成type