求助 ajax post 访问 api 报 400 错误 百度一下说是参数不对

api:
http://redsox.tcs.auckland.ac.nz/BC/Open/Service.svc/help/operations/RegisterUser

<script src="js/jquery-1.4.2.min.js" type="text/javascript"></script>
<script>
function reg()
{
var Address = $("#address").val();
var Name = $("#Name").val();
var Password = $("#Password").val();

$.ajax(
{
type: "post",
contentType: "application/json",
dataType: "json",
url : "http://redsox.tcs.auckland.ac.nz/BC/Open/Service.svc/register",
data:{
"Address":Address,
"Name":Name,
"Password":Password
},
success: function(data)
{
alert(data);
}
});

}
</script>