手持设备开发项目实例

之前开发手持设备(RF)在WINCE环境用EVC开发，在客户端在EVC用C开发客户端界面，通过socket通信调用

服务端，服务端中间件调用后台数据库存储过程，基本业务逻辑在存储过程中实现。

最近在.net环境通过http请求实现新一版的程序开发。服务端可以是.net，也可以是java的服务程序，业务

逻辑可以在程序中实现，同样也可以放在存储过程中实现。我这里服务端用的.net MVC框架来实现的。

客户端具体的代码如下。

HttpUtil 类

using System;
using System.IO;
using System.Collections.Generic;
using System.Net;

namespace WMS
{
public sealed class HttpUtil
{
public int Timeout { get; set; }


public HttpUtil()
: this(100000)
{

}

public HttpUtil(int timeOut)
{
Timeout = timeOut;
}

public static T Post<T>(string reqUrl, object objParam)
{
HttpUtil httpClt = new HttpUtil(100000);

string responseContent = httpClt.Post(reqUrl, objParam);

if (!string.IsNullOrEmpty(responseContent))
return Json.Converter.Deserialize<T>(responseContent); 
return default(T);
}

private string GetPostContent(object o)
{
if (o == null)
return null;

var parameters = new List<string>();
var t = o.GetType();
foreach (var pi in t.GetProperties())
{
var k = pi.Name;
if (pi.PropertyType.Name == "Int32[]")
{
var v = pi.GetValue(o, null);
if (v != null)
{
int[] ids = (int[])v;
for (int i = 0; i < ids.Length; i++)
parameters.Add(string.Format("{0}={1}", k + "[" + i + "]", ids[i]));
}
}
else
{
var v = pi.GetValue(o, null);
if (v != null)
parameters.Add(string.Format("{0}={1}", k, v));
}
}

return string.Join("&", parameters.ToArray());
}

private HttpWebRequest GetRequest(string url, string method, string postContent, string contentType)
{
HttpWebRequest req = WebRequest.Create(url) as HttpWebRequest;

req.AllowAutoRedirect = false;
req.Method = method;
req.ContentType = contentType;
req.Timeout = Timeout;
req.SendChunked = true;

return req;
}


public string Get(string url)
{
return Request(url, "GET", null);
}

public static T Get<T>(string url)
{
HttpUtil httpClt = new HttpUtil(10000);
string responseContent = httpClt.Get(url);

if (!string.IsNullOrEmpty(responseContent))
return Json.Converter.Deserialize<T>(responseContent);
return default(T);
}

public string Post(string url, object objParam)
{
return Request(url, "POST", GetPostContent(objParam));
}

public string Request(string url, string method, string postContent)
{
return Request(url, method, postContent, "application/x-www-form-urlencoded;charset=UTF-8");
}

public string Request(string url, string method, string postContent, string contentType)
{

HttpWebRequest req = GetRequest(url, method, postContent, contentType);

//请求数据
if (string.Equals(method, "POST", StringComparison.InvariantCultureIgnoreCase))
{
byte[] bytesToPost = System.Text.Encoding.UTF8.GetBytes(postContent);
req.ContentLength = bytesToPost.Length;

using (Stream s = req.GetRequestStream())
{
s.Write(bytesToPost, 0, bytesToPost.Length);
}
}

using (HttpWebResponse responseObj = req.GetResponse() as HttpWebResponse)
{
using (Stream s = responseObj.GetResponseStream())
{
using (StreamReader sr = new StreamReader(s))
{
return sr.ReadToEnd();
}
}
}

}
}
}

login

using System;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Windows.Forms; 

namespace WMS
{
  public partial class Login : Form
  {
    public Login()
    {
      InitializeComponent(); 
      txtName.Focus();
    }

    private void txtName_KeyDown(object sender, KeyEventArgs e)
    {
      if (e.KeyCode == Keys.Enter && !string.IsNullOrEmpty(txtName.Text))
      {
        lblMessage.Text = "";
        txtPassword.Focus();
        txtPassword.SelectAll();
      }
    }

    private void txtPassword_KeyDown(object sender, KeyEventArgs e)
    {
      if (e.KeyCode == Keys.Enter && !string.IsNullOrEmpty(txtPassword.Text))
      {
        Login(txtName.Text.Trim(), txtPassword.Text.Trim());
      }
    }

    private void btnLogin_Click(object sender, System.EventArgs e)
    {
      UserLogin(txtName.Text.Trim(), txtPassword.Text.Trim());
    }

    private void Login(string name, string password)
    {
      btnLogin.Enabled = false;
      txtPassword.Enabled = false;

      lblMessage.Text = "";
      if (string.IsNullOrEmpty(name))
      {
        lblMessage.Text = "用户名不能为空！";
        btnLogin.Enabled = true;
        txtPassword.Enabled = true;
        txtName.Focus();
        txtName.SelectAll();
        return;
      }
      if (string.IsNullOrEmpty(password))
      {
        lblMessage.Text = "密码不能为空！";
        btnLogin.Enabled = true;
        txtPassword.Enabled = true;
        txtPassword.Focus();
        txtPassword.SelectAll();
        return;
      }
      try
      {
        HttpUtil.Post<ClientInfo>(url + "/Sys/Login", new
        {
          userName = name,
          password = password
        });
        if (ClientInfo.User_Id == 0)
        {
          lblMessage.Text = "用户名或密码错误！";
          btnLogin.Enabled = true;
          txtPassword.Enabled = true;
          txtName.Focus();
          txtName.SelectAll();
        }
        else
        {
          Hide();
          Menu fmMenu = new Menu();
          fmMenu.ShowDialog();
          fmMenu.MaximizeBox = true;
        }
      }
      catch (Exception ex)
      {
        lblMessage.Text = ex.Message;
        btnLogin.Enabled = true;
        txtPassword.Enabled = true;
        txtName.Focus();
        txtName.SelectAll();
      }
    }

     

    private void btnLogOut_Click(object sender, EventArgs e)
    {
      Hide();
      LoginOut fm = new LoginOut();
      fm.Show();
    }
  }
}

服务端实现类

#region

using System;
using System.Web.Mvc;
using WMS.Enum;
using Wms.Utility;
using Wms.Services; 
using Wms.DomainModel; 
#endregion

namespace Wms.Controllers
{
  [HandleError]
  public class SysController : Controller
  {
     

    [HttpPost]
    public string Login(string userName, string password)
    {
      ISys_UserService service = UnityHelper.GetInstance<ISys_UserService>("Wms");
      string result = service.Login(userName, password);
      return result;
    }
  }
}

如需要全部实现代码请联系 qq 1153755352