Ajax无返回值问题

Ajax无返回值或者返回值不是json格式时，应调用error

/**
	 * 根据wordsid删除留言
	 * @param wordsid
	 */
	@RequestMapping("/DeleteWordsByWordsid.action")
	public void DeleteWordsByWordsid(Integer wordsid){
		wordsservice.DeleteWordsByWordsid(wordsid);
	}

//点击删除留言
		function DeleteWrods(wordsid){
			$.ajax({
					url:'DeleteWordsByWordsid.action',
					type:'post',
					data:{'wordsid':wordsid},
					error:function(data){
						window.location='${pageContext.request.contextPath}/FindAllToSpace.action?stdid='+${Astudent.stdid};
					}
				});
		}