关于查询EMS问题

myzxarp · 发表于 2013-11-9 17:20:47

本帖最后由 myzxarp 于 2013-11-9 17:33 编辑

暂时不考虑验证码问题，采用手工填入验证码方式。

目的：查询EMS

界面如图：

运行界面

方法如下：

打开查询页面http://www.11183.com.cn/ems/order/singleQuery_t，然后输入物流编码，然后故意输错验证码。firebug截图如下：

代码如下：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using DotNet.Utilities;
using System.IO;
namespace jitang
{
public partial class FormEMS2 : Form
{
string validateurl = "http://www.ems.com.cn/ems/rand";
HttpResult hresult = new HttpResult();
HttpHelper httper = new HttpHelper();
HttpItem hitem = new HttpItem();
static string imagepath = Application.StartupPath + @"\validate.jpg";
public FormEMS2()
{
InitializeComponent();
}
private void button2_Click(object sender, EventArgs e)
{
//获取验证码图片
hitem.URL = validateurl;
hitem.ResultType = ResultType.Byte;
hresult = httper.GetHtml(hitem);
pictureBox2.Image = byteArrayToImage(hresult.ResultByte);
//获取验证码图片结束
}
/// <summary>
/// 字节数组转换为图片
/// </summary>
/// <param name="Bytes"></param>
/// <returns></returns>
private static Image byteArrayToImage(byte[] Bytes)
{
using (MemoryStream ms = new MemoryStream(Bytes))
{
Image outputImg = Image.FromStream(ms);
System.IO.File.Delete(imagepath);
outputImg.Save(imagepath);
return outputImg;
}
}
/// <summary>
/// 查询EMS
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button3_Click(object sender, EventArgs e)
{
//查询快递开始
hitem.Postdata = string.Format("mailNum={0}&checkCode={1}", "5143344643700", textBox2.Text);
hitem.URL = "http://www.ems.com.cn/ems/order/singleQuery_t";
hitem.Cookie = hresult.Cookie.Replace("path=/,", "").Replace(";path=/", "");
hitem.ContentType = "application/x-www-form-urlencoded";
hresult = httper.GetHtml(hitem);
richTextBox2.AppendText(hresult.Html);
//查询快递结束
}
}
}

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目前存在的问题：输入验证码，点击查询后，提示：

<html><head><title>302 Moved Temporarily</title></head>
<body bgcolor="#FFFFFF">
<p>This document you requested has moved temporarily.</p>
<p>It's now at <a href="http://www.11183.com.cn/mailtracking/you_jian_cha_xun.html">[url=http://www.11183.com.cn/mailtracking/you_jian_cha_xun.html%3C/a%3E.%3C/p]http://www.11183.com.cn/mailtrac ... ml</a>.</p[/url]>
</body></html>

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求助各位大侠，我错在哪里了呢？

myzxarp · 发表于 2013-11-9 17:27:09

各位看官，请不吝赐教。

站长苏飞 · 发表于 2013-11-9 19:54:21

这个应该是登录成功了，这个html是跳转，你带返回的cookie直接访问下试试，我休息手机不方便细看

cload · 发表于 2013-11-9 20:49:17

myzxarp 发表于 2013-11-9 17:27
各位看官，请不吝赐教。

帮你写下，QQ上也回复你了，其它是站长类中正则有点小问题的原因。

myzxarp · 发表于 2013-11-10 06:55:41

确实，您的代码能够运行，谢谢您。站长的帮助类中正则有问题？请指正下啊！

myzxarp · 发表于 2013-11-10 08:25:35

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using DotNet.Utilities;
using System.IO;
namespace jitang
{
public partial class FormEMS2 : Form
{
HttpResult hresult = new HttpResult();
HttpHelper httper = new HttpHelper();
HttpItem hitem = new HttpItem();
string cookie = string.Empty;
static string imagepath = Application.StartupPath + @"\validate.jpg";
string _Referer = string.Empty;
public FormEMS2()
{
InitializeComponent();
}
private void button2_Click(object sender, EventArgs e)
{
//获取页面cookie
hitem.URL = "http://www.ems.com.cn/ems/order/singleQuery_t";
hitem.Method = "GET";
hitem.Allowautoredirect = false;
hresult = httper.GetHtml(hitem);
_Referer = hresult.Html;
cookie = hresult.Cookie;
//获取cookie结束
//获取验证码图片
hitem.URL = "http://www.11183.com.cn/ems/rand?d=0.3501349513942344";
hitem.Method = "GET";
hitem.ResultType = ResultType.Byte;
hitem.Cookie = cookie;
hresult = httper.GetHtml(hitem);
pictureBox2.Image = byteArrayToImage(hresult.ResultByte);
//获取验证码图片结束
}
/// <summary>
/// 查询EMS
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button3_Click(object sender, EventArgs e)
{
//查询快递开始
hitem.Method = "POST";
hitem.Postdata = string.Format("mailNum={0}&checkCode={1}", "5143344643700", textBox2.Text);
hitem.URL = "http://www.ems.com.cn/ems/order/singleQuery_t";
hitem.Cookie =cookie;
hitem.Allowautoredirect = true;
hresult = httper.GetHtml(hitem);
richTextBox2.AppendText(hresult.Html);
//查询快递结束
}
/// <summary>
/// 字节数组转换为图片
/// </summary>
/// <param name="Bytes"></param>
/// <returns></returns>
private static Image byteArrayToImage(byte[] Bytes)
{
MemoryStream ms = new MemoryStream(Bytes);
Image outputImg = Image.FromStream(ms);
System.IO.File.Delete(imagepath);
outputImg.Save(imagepath);
return outputImg;
}
}
}

复制代码

代码修改了一下，仍有问题，附上有问题代码，HttpHelper为最新版本1.4.3

myzxarp · 发表于 2013-11-10 08:58:53

//得到返回的HTML
if (item.URL.EndsWith("singleQuery_t") && item.Method == "GET")//这里取出跳转链接,以备后面请求的Referer用.
{
result.Html = response.Headers["Location"];
}
else
{
result.Html = encoding.GetString(ResponseByte);
}

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为什么要这么修改呢？

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