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

  1 using System;
  2 using System.IO;
  3 using System.Collections.Generic;
  4 using System.Net;
  5 
  6 namespace WMS
  7 {
  8 public sealed class HttpUtil
  9 {
 10 public int Timeout { get; set; }
 11 
 12 
 13 public HttpUtil()
 14 : this(100000)
 15 {
 16 
 17 }
 18 
 19 public HttpUtil(int timeOut)
 20 {
 21 Timeout = timeOut;
 22 }
 23 
 24 public static T Post<T>(string reqUrl, object objParam)
 25 {
 26 HttpUtil httpClt = new HttpUtil(100000);
 27 
 28 string responseContent = httpClt.Post(reqUrl, objParam);
 29 
 30 if (!string.IsNullOrEmpty(responseContent))
 31 return Json.Converter.Deserialize<T>(responseContent); 
 32 return default(T);
 33 }
 34 
 35 private string GetPostContent(object o)
 36 {
 37 if (o == null)
 38 return null;
 39 
 40 var parameters = new List<string>();
 41 var t = o.GetType();
 42 foreach (var pi in t.GetProperties())
 43 {
 44 var k = pi.Name;
 45 if (pi.PropertyType.Name == "Int32[]")
 46 {
 47 var v = pi.GetValue(o, null);
 48 if (v != null)
 49 {
 50 int[] ids = (int[])v;
 51 for (int i = 0; i < ids.Length; i++)
 52 parameters.Add(string.Format("{0}={1}", k + "[" + i + "]", ids[i]));
 53 }
 54 }
 55 else
 56 {
 57 var v = pi.GetValue(o, null);
 58 if (v != null)
 59 parameters.Add(string.Format("{0}={1}", k, v));
 60 }
 61 }
 62 
 63 return string.Join("&", parameters.ToArray());
 64 }
 65 
 66 private HttpWebRequest GetRequest(string url, string method, string postContent, string contentType)
 67 {
 68 HttpWebRequest req = WebRequest.Create(url) as HttpWebRequest;
 69 
 70 req.AllowAutoRedirect = false;
 71 req.Method = method;
 72 req.ContentType = contentType;
 73 req.Timeout = Timeout;
 74 req.SendChunked = true;
 75 
 76 return req;
 77 }
 78 
 79 
 80 public string Get(string url)
 81 {
 82 return Request(url, "GET", null);
 83 }
 84 
 85 public static T Get<T>(string url)
 86 {
 87 HttpUtil httpClt = new HttpUtil(10000);
 88 string responseContent = httpClt.Get(url);
 89 
 90 if (!string.IsNullOrEmpty(responseContent))
 91 return Json.Converter.Deserialize<T>(responseContent);
 92 return default(T);
 93 }
 94 
 95 public string Post(string url, object objParam)
 96 {
 97 return Request(url, "POST", GetPostContent(objParam));
 98 }
 99 
100 public string Request(string url, string method, string postContent)
101 {
102 return Request(url, method, postContent, "application/x-www-form-urlencoded;charset=UTF-8");
103 }
104 
105 public string Request(string url, string method, string postContent, string contentType)
106 {
107 
108 HttpWebRequest req = GetRequest(url, method, postContent, contentType);
109 
110 //请求数据
111 if (string.Equals(method, "POST", StringComparison.InvariantCultureIgnoreCase))
112 {
113 byte[] bytesToPost = System.Text.Encoding.UTF8.GetBytes(postContent);
114 req.ContentLength = bytesToPost.Length;
115 
116 using (Stream s = req.GetRequestStream())
117 {
118 s.Write(bytesToPost, 0, bytesToPost.Length);
119 }
120 }
121 
122 using (HttpWebResponse responseObj = req.GetResponse() as HttpWebResponse)
123 {
124 using (Stream s = responseObj.GetResponseStream())
125 {
126 using (StreamReader sr = new StreamReader(s))
127 {
128 return sr.ReadToEnd();
129 }
130 }
131 }
132 
133 }
134 }
135 }

login

  1 using System;
  2 using System.Drawing;
  3 using System.Runtime.InteropServices;
  4 using System.Windows.Forms; 
  5 
  6 namespace WMS
  7 {
  8   public partial class Login : Form
  9   {
 10     public Login()
 11     {
 12       InitializeComponent(); 
 13       txtName.Focus();
 14     }
 15 
 16     private void txtName_KeyDown(object sender, KeyEventArgs e)
 17     {
 18       if (e.KeyCode == Keys.Enter && !string.IsNullOrEmpty(txtName.Text))
 19       {
 20         lblMessage.Text = "";
 21         txtPassword.Focus();
 22         txtPassword.SelectAll();
 23       }
 24     }
 25 
 26     private void txtPassword_KeyDown(object sender, KeyEventArgs e)
 27     {
 28       if (e.KeyCode == Keys.Enter && !string.IsNullOrEmpty(txtPassword.Text))
 29       {
 30         Login(txtName.Text.Trim(), txtPassword.Text.Trim());
 31       }
 32     }
 33 
 34     private void btnLogin_Click(object sender, System.EventArgs e)
 35     {
 36       UserLogin(txtName.Text.Trim(), txtPassword.Text.Trim());
 37     }
 38 
 39     private void Login(string name, string password)
 40     {
 41       btnLogin.Enabled = false;
 42       txtPassword.Enabled = false;
 43 
 44       lblMessage.Text = "";
 45       if (string.IsNullOrEmpty(name))
 46       {
 47         lblMessage.Text = "用户名不能为空！";
 48         btnLogin.Enabled = true;
 49         txtPassword.Enabled = true;
 50         txtName.Focus();
 51         txtName.SelectAll();
 52         return;
 53       }
 54       if (string.IsNullOrEmpty(password))
 55       {
 56         lblMessage.Text = "密码不能为空！";
 57         btnLogin.Enabled = true;
 58         txtPassword.Enabled = true;
 59         txtPassword.Focus();
 60         txtPassword.SelectAll();
 61         return;
 62       }
 63       try
 64       {
 65         HttpUtil.Post<ClientInfo>(url + "/Sys/Login", new
 66         {
 67           userName = name,
 68           password = password
 69         });
 70         if (ClientInfo.User_Id == 0)
 71         {
 72           lblMessage.Text = "用户名或密码错误！";
 73           btnLogin.Enabled = true;
 74           txtPassword.Enabled = true;
 75           txtName.Focus();
 76           txtName.SelectAll();
 77         }
 78         else
 79         {
 80           Hide();
 81           Menu fmMenu = new Menu();
 82           fmMenu.ShowDialog();
 83           fmMenu.MaximizeBox = true;
 84         }
 85       }
 86       catch (Exception ex)
 87       {
 88         lblMessage.Text = ex.Message;
 89         btnLogin.Enabled = true;
 90         txtPassword.Enabled = true;
 91         txtName.Focus();
 92         txtName.SelectAll();
 93       }
 94     }
 95 
 96      
 97 
 98     private void btnLogOut_Click(object sender, EventArgs e)
 99     {
100       Hide();
101       LoginOut fm = new LoginOut();
102       fm.Show();
103     }
104   }
105 }

服务端实现类

 1 #region
 2 
 3 using System;
 4 using System.Web.Mvc;
 5 using WMS.Enum;
 6 using Wms.Utility;
 7 using Wms.Services; 
 8 using Wms.DomainModel; 
 9 #endregion
10 
11 namespace Wms.Controllers
12 {
13   [HandleError]
14   public class SysController : Controller
15   {
16      
17 
18     [HttpPost]
19     public string Login(string userName, string password)
20     {
21       ISys_UserService service = UnityHelper.GetInstance<ISys_UserService>("Wms");
22       string result = service.Login(userName, password);
23       return result;
24     }
25   }
26 }

 

如需要全部实现代码请联系 qq 1153755352