前端通过ajax解析字符串

后台：

String sear = request.getParameter("sear");
		
		//验证用户表中是否存在
		SearchDao searDao  = new SearchDao();
		List<String> lst = searDao.query(sear);

		//返回ajax响应
		StringBuffer sbf = new StringBuffer();
		for (String str : lst){
			sbf.append(str+",");
		}
		String result = "";
		if (lst.size()>0){
			result = sbf.substring(0, sbf.length()-1);
		}
		response.setCharacterEncoding("UTF-8");
		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		out.write(result);
		out.flush();
		out.close();

后台将数据转化成一定格式的字符串；

前端：

$.get("user?method=checkUsername",{"sear":sear},function(result){
				if(result != " "){
					var arr = result.split(",");
					for (var i=0;i<arr.length;i++){
						$("#mydiv").append("<div class='sb'>"+arr[i]+"</div>");
					}
                                 }
                               });

前端将字符串拆开，然后再显示；