怎么解析json格式的数据文件?报错

用jquery异步请求了一个文件，文件里面的数据时json格式,文件名是listmsg_inbox.sms，内容如下：

<?xml version="1.0" encoding="UTF-8" ?>
[{"moduleName":"","sender":"\"胡利华\" <13056893386>","address":{"name":"胡利华","phone":"13056893386"},"owner":"蔡亚红/市财税局/nbl","showSender":"胡利华","receiveDate":{"hours":10,"minutes":5,"seconds":10,"nanos":30000000,"date":27,"year":112,"time":1353981910030,"day":2,"timezoneOffset":-480,"month":10},"phone":"13056893386","sessionEnabled":true,"applicationId":"","createDate":{"hours":10,"minutes":5,"seconds":10,"nanos":30000000,"date":27,"year":112,"time":1353981910030,"day":2,"timezoneOffset":-480,"month":10},"message":"tt","smsMsgId":0,"messageId":"109890b63b22218c013b3f9c5c0f043f"}]

其中dataType:"json"是这样设置，但会报错；如果设置dataType:"text",就能请求成功，为什么？

设置dataType:"text",返回的是字符串，那怎么解析啊？

$(function(){
	$.ajax({
		type:"GET",
		url:"listmsg_inbox.sms",
		dataType:"json",
		success:function(data){
			alert(data);
		},	
		error:function(){
			alert("error");
		}
	 });
});