ajax的使用

$.ajax({
        url: "${ctx}/selfprogram/selfProgram/showParam?paramIds="+pmIds,
        type: "get",
        dataType:"json",
        success: function (data) {
            var obj = eval(data);
            var str = "";
            var exParamerIds = parent.parent.$("#exParamerIds").val();
            var eachParamer = exParamerIds.substring(0,exParamerIds.length-1).split(",");
                str = str+"<thead><tr><th style="display: none;">主键+</th><th>序号</th><th>参数名称</th><th>参数分类</th><th>单位</th><th>排序</th></tr>"
                   +"</thead><tbody id="paramTable">"; 
           for (var i = 0; i < eachParamer.length; i++) {
             /*当返回数据id与隐藏域数据一致时，将隐藏域对应的排序给页面展示*/
                    var index = eachParamer[i].indexOf(":");
                    var praId = eachParamer[i].substring(0,index);
                    var querySort = eachParamer[i].charAt(eachParamer[i].length - 1);
                           str = str 
                               +"<tr id="paramTr"><td id="sort">"+querySort
                               +"</td><td style="display: none;">"+obj[i].id
                               +"</td><td>"+obj[i].name
                               +"</td><td>"+obj[i].typeValue
                               +"</td><td>"+obj[i].unitValue
                               +"</td><td><a href="#" class="up" onClick="upward(this,2)">上移</a> <a href="#" class="down" onClick="downward(this,2)">下移</a></td></tr>";
                                 }
                           str = str+"</tbody>"; 
                                parent.parent.$("#contentTable2").html(str);
                                parent.parent.initTableCheckbox(parent.parent.$('#contentTable2 thead tr'),parent.parent.$('#contentTable2 tbody tr'));
                                parent.parent.$.jBox.close(true);
                          }

后台

	public static void outResult(HttpServletResponse response, Object object) {
		response.setContentType("text/plain;charset=UTF-8");
		response.setHeader("Cache-Control", "no-cache");
		PrintWriter out = null;
		try {
			out = response.getWriter();
		} catch (Exception e) {
			e.printStackTrace();
		}
		String str = JsonMapper.toJsonString(object);
		out.print(str);
		out.flush();
		out.close();
	}

　　

        @RequiresPermissions("selfprogram:selfProgram:view")
	@RequestMapping(value = "showParam")
	public String showParam(String paramIds,HttpServletResponse response) {
		List<Parameters> parametersList = new ArrayList<Parameters>();
                ......
		JsonMapper.toJsonString(parametersList);
		outResult(response,parametersList);
		return null;
	}