第一种：前台接收
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dataType: "json", success: function (data) { var varReceiver = data; } |
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<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="echart2.aspx.cs" Inherits="RTC.echart2" %><!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"><meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title> </title> <!-- 引入 ECharts 文件 --> <script src="scripts/echarts.common.min.js"></script> <script src="scripts/jquery-1.10.2.min.js"></script> <script src="scripts/json2.js"></script></head><body><form id="form1" runat="server"><!-- 为 ECharts 准备一个具备大小（宽高）的Dom --><div id="main" style="width:1000px;height:400px;"></div><script type="text/javascript"> var varAxis; var varSeries; //var varRtcNO = $("#txtHid").val(); var varRtcNO = "35000002818"; var jdata; var myChart = echarts.init(document.getElementById('main')); // 显示标题，图例和空的坐标轴 myChart.setOption({ title: { text: '温度曲线图' }, tooltip: { trigger: 'axis', axisPointer: { animation: false }, formatter: function (params) { return params[0].name + '<br />温度:' + params[0].value + '°C'; } }, legend: { data: ['温度'] }, xAxis: { data: [] }, yAxis: { axisLabel: { formatter: '{value} °C' }, min: 18, max:30 }, series: [{ name: '温度', type: 'line', smooth: true, data: [] }] }); // 异步加载数据 $.ajax({ type: "post", url: "getrtchistorydata.ashx?rtcno=" + varRtcNO, dataType: "json", success: function (data) { var varReceiver = data; //var varReceiver = jQuery.parseJSON(data); var varAxis=new Array() ; var varSeries = new Array(varReceiver.Count[0].total); for (var i = 0; i < varReceiver.Count[0].total; i++) { varAxis.push(varReceiver.Rows[i].RecordTime); varSeries[i] = varReceiver.Rows[i].RoomTemp; } // 填入数据 myChart.setOption({ xAxis: { data: varAxis }, series: [{ //根据名字对应到相应的系列 name: '温度', data: varSeries }] }); }, error: function (XMLHttpRequest, textStatus, errorThrown) { alert(errorThrown); } }); </script></form></body></html> |
第二种：前台接收
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dataType: "text", success: function (data) { //var varReceiver = data; var varReceiver = jQuery.parseJSON(data);。。。。。} |
两者统一的后台 一般处理程序ashx：
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using System;using System.Collections.Generic;using System.Data;using System.Data.SqlClient;using System.Linq;using System.Web;namespace RTC{ /// <summary> /// getrtchistorydata 的摘要说明 /// </summary> public class getrtchistorydata : IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response.ContentType = "text/plain"; string strRTCNo = context.Request.QueryString["rtcno"].ToString(); SqlConnection con = new SqlConnection("server=192.168.0.222;uid=sa;pwd=hiwits;database=CeShi_QingDao;Max Pool Size=2048;"); SqlCommand cmd = new SqlCommand("select RtcNO,RoomTemp,InstallPlace,convert(varchar,RecordTime,120) as RecordTime,systime from RTCHistory where RtcNO='" + strRTCNo + "' order by InstallPlace,RecordTime", con); SqlDataAdapter da = new SqlDataAdapter(cmd); DataSet ds = new DataSet(); da.Fill(ds); string stbList = ""; stbList = "{\"Rows\":["; foreach (DataRow dr in ds.Tables[0].Rows) { stbList = stbList + "{ \"RecordTime\":\"" + dr[3].ToString() + "\","; stbList = stbList + " \"RoomTemp\":\"" + dr[1].ToString() + "\"},"; } stbList = stbList.Substring(0, stbList.Length - 1);//去掉最后的一个逗号 stbList = stbList + "],"; stbList = stbList + "\"Count\":[{\"total\":" + ds.Tables[0].Rows .Count+ "}]";//用来记录一共返回了几条数据记录 stbList = stbList + "}"; context.Response.Write(stbList.ToString()); } public bool IsReusable { get { return false; } } public void RetrunHistoryData() { } }} |
以上这篇aspx后台传递Json到前台的两种接收方法推荐就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持服务器之家。
