如何在java脚本函数中调用Web服务
本文关键字:调用 Web 服务 函数 脚本 java | 更新日期: 2024-09-24 18:11:37
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Ar_PieChart.aspx.cs" Inherits="Ar_PieChart" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<meta http-equiv='content-type' content='text/html; charset=UTF-16' />
<meta name="viewport" content="width=device-height,minimum-scale=0.5,maximum-scale=3.0,user-scalable=yes" />
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.0/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript" src="//www.google.com/jsapi"></script>
<script type="text/javascript">
google.load('visualization', '1', { packages: ['corechart'] });
</script>
<script type="text/javascript">
$(document).ready(function () {
$.ajax({
type: 'POST',
dataType: 'json',
contentType: 'application/json',
url: 'Ar_PieChart.aspx/bind_chartvalue',
data: '{}',
success:
function (response) {
drawVisualization(response.d);
}
});
})
function drawVisualization(piedata) {
var data = new google.visualization.DataTable();
data.addColumn('string', 'CLass');
data.addColumn('int', 'count');
for (var i = 0; i < piedata.length; i++) {
data.addRow([piedata[i].CLass, piedata[i].count]);
}
new google.visualization.PieChart(document.getElementById('visualization')).draw(data, { is3D: true });
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div id="visualization" style="width: 600px; height: 350px">
</div>
</form>
</body>
</html>
代码隐藏
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Web.Services;
using MySql.Data.MySqlClient;
public partial class Ar_PieChart : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
piedata.chart_data service = new piedata.chart_data();
service.bind_chartvalue();
}
}
我的网络服务
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using MySql.Data.MySqlClient;
using MySql.Data;
using System.Data;
using System.IO;
using System.Globalization;
using System.Configuration;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;
using System.Text;
/// <summary>
/// Summary description for chart_data
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
// [System.Web.Script.Services.ScriptService]
public class chart_data : System.Web.Services.WebService {
MySqlConnection connectionString = new MySqlConnection("server=****;user id=****;Password=*****;database=****;");
public chart_data () {
//Uncomment the following line if using designed components
//InitializeComponent();
}
[WebMethod]
public List<chart> bind_chartvalue()
{
List<chart> chart = new List<chart>();
connectionString.Open();
MySqlCommand command = connectionString.CreateCommand();
command.CommandText = "Select Class,COUNT(Class) AS COUNT from sh_report GROUP BY Class";
MySqlDataReader dr = command.ExecuteReader();
while (dr.Read())
{
chart crt_data = new chart();
crt_data.Class = dr[0].ToString();
crt_data.COUNT = Convert.ToInt32(dr[1]);
chart.Add(crt_data);
}
connectionString.Close();
return chart;
}
}
实际上,我正在通过Web服务检索数据,但是我不知道如何调用该Web服务。我像上面一样尝试过,但我没有得到 o/p。它只是显示空白页面。任何人都知道如何获取 Web 服务数据。
您正在使用临时命名空间,这应该是您的真实命名空间,显示"取消注释此行以允许从脚本调用"的行仍未注释,您的URL需要指向此服务而不是Page.aspx。