yilin 的程式日記: 2006/08

[C#]用PerformanceCounter讀取MSMQ中的訊息數量

using System.Diagnostics;
using System;

namespace ReadMSMQ
{
    class Program
    {
        static void Main(string[] args)
        {
            //只要改第一與第三個參數, [hostname]\private$\[queuename]
            PerformanceCounter objCounter1 = new PerformanceCounter("MSMQ Queue", "Messages in Queue", @"testHost\private$\testQueue");
            Console.WriteLine(objCounter1.NextValue().ToString());

            //查出MSMQ中, 每個Queue的Messages數量, 可用下面的方式
            PerformanceCounterCategory objCategory = new PerformanceCounterCategory("MSMQ Queue");
            PerformanceCounter objCounter2 = new PerformanceCounter("MSMQ Queue", "Messages in Queue");
            foreach (string strInstanceName in objCategory.GetInstanceNames())
            {
                objCounter2.InstanceName = strInstanceName;
                Console.Write(strInstanceName + " = " + objCounter2.NextValue().ToString());
            }
        }
    }
}

[Sun AppServer]建立Sun AppServer與NodeAgent的Windows服務

使用Windows的sc.exe來完成Windows服務的建立.

建立一個 Sun Java System Application Server 的 Windows 服務.
C:\WINDOWS\system32\sc.exe create sun_domain1 binPath= "C:\Sun\ApplicationServer\lib\appservService.exe \"C:\Sun\ApplicationServer\bin\asadmin.bat start-domain --user admin --passwordfile C:\Sun\ApplicationServer\password.txt domain1\" \"C:\Sun\ApplicationServer\bin\asadmin.bat stop-domain domain1\"" DisplayName= "SUNONE AppServer domain1"
- 若執行成功, 會出現 "[SC] CreateService 成功" 的訊息.
  此 Windows 服務的顯示名稱為"SUNONE AppServer domain1", 服務名稱為 "sun_domain1".
  若要刪除此 Windows 服務, 可用以下的指令:
  C:\WINDOWS\system32\sc.exe delete sun_domain1

[VirtualPC]解決PAE Error的方法

將 boot.ini 中的 [operating systems] 改為
multi(0)disk(0)rdisk(0)partition(2)\WINDOWS = "Microsoft Windows XP Professional" /fastdetect /execute /NOPAE

[Sun AppServer]Tomcat透過IIOP使用Sun AppServer的EJB

前置作業:

將 Sun AppServer 安裝目錄中的 lib\j2ee.jar 與 lib\appserv-rt.jar 分別放至 Tomcat 安裝目錄中的 common\lib 與 shared\lib 下
在 Web 專案中, 將 EJB Module 部署至 Sun AppServer 後產生的 xxxClient.jar 檔加入 WEB-INF\lib 中

[Java]讀取MS Access資料

//設定Connection的URL
String filepath = "./test.mdb";
String url = "jdbc:odbc:DRIVER=Microsoft Access Driver (*.mdb);DBQ=" + filepath;
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
//取得Access的Connection
Connection objAccessConnection = DriverManager.getConnection(url);
DatabaseMetaData objMeta = objAccessConnection.getMetaData();
//取得Access的Table Schema
ResultSet objTables = objMeta.getTables(null, null, null, new String[]{"TABLE"});
//取得Access中的所有表格
while (objTables.next()) {
    //表格名稱
    String strTableName = objTables.getString("TABLE_NAME");
    //查詢的SQL句
    String strQuerySql = "SELECT * FROM " + strTableName;
    //查詢用的Statement
    Statement objAccessStatement = objAccessConnection.createStatement();
    //取得資料集
    ResultSet objData = objAccessStatement.executeQuery(strQuerySql);
}

[Sun AppServer]建立sybase的ConnectionPool

以 Sybase 的 jConnect-6_0 為例:

將 jConnect-6_0 的 jar 檔 (jconn3.jar & jTDS3.jar) 複製到 $sunap\lib 下
建立 JDBC Connection Pool 的資料如下:
Datasource Classname: com.sybase.jdbc3.jdbc.SybDataSource
Properties:
databaseName: 資料庫名稱
serverName: 資料庫的主機名
PortNumber: 資料庫的 port (Ex: 5000)
User: 連線的使用者帳號
Password: 連線的使用者密碼
charset: 語系 (Ex: big5,utf-8)

[SQLServer2000]查出資料庫各表格的資訊

SELECT
　sysusers.name + N'.' + sysobjects.name as ObjectName,
　sysindexes.name as IndexName,
　sysindexes.rows, --資料列
　case indid when 1 then 1 else 0 end as IsClusteredIndex,
　sysindexes.indid, --索引的識別碼
　sysobjects.name, --物件名稱
　sysusers.name --使用者名稱或群組名稱在資料庫中是唯一的
FROM
　sysusers, sysobjects, sysindexes
WHERE
　sysusers.uid = sysobjects.uid
　and sysindexes.id = sysobjects.id
　and sysobjects.name not like '#%'
　and OBJECTPROPERTY(sysobjects.id, N'IsMSShipped') <> 1
　and OBJECTPROPERTY(sysobjects.id, N'IsSystemTable') = 0
ORDER BY
　ObjectName, IsClusteredIndex DESC,
　indexproperty(sysindexes.id, sysindexes.name, N'IsStatistics'),
　IndexName

[C# & Java]GET/POST資料

[C#]

GET:

//設定GET資料
Uri t_uri = new Uri("http://localhost/Test/Get.asp?id=yilin");
HttpWebRequest t_req = System.Net.WebRequest.Create(t_uri) as HttpWebRequest;
t_req.Method = "GET";
//取得回應的內容
System.Net.WebResponse t_resp = t_req.GetResponse();
System.IO.StreamReader t_stream = new System.IO.StreamReader(t_resp.GetResponseStream());
Console.WriteLine(t_stream.ReadToEnd().Trim());

POST:

string t_url = "http://localhost/Test/Post.asp";
string t_post = "id=yilin&password=helloworld";
//將POST資料轉成byte array
byte[] t_bytdata = Encoding.UTF8.GetBytes(t_post);
WebRequest t_req = WebRequest.Create(t_url);
//設定POST資料
t_req.ContentType = "application/x-www-form-urlencoded";
t_req.Method = "POST";
Stream t_ws = t_req.GetRequestStream();
t_ws.Write(t_bytdata, 0, t_bytdata.Length);
t_ws.Close();

[C#]在程式中模擬特定的windows帳號存取網路芳鄰

using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Security.Principal;
using System.Security.Permissions;

[assembly: SecurityPermissionAttribute(SecurityAction.RequestMinimum, UnmanagedCode = true)]
[assembly: PermissionSetAttribute(SecurityAction.RequestMinimum, Name = "FullTrust")]
namespace ConsoleApplication1
{
    class Class1
    {
        //登入
        [DllImport("advapi32.dll", SetLastError = true)]
        public static extern bool LogonUser(
           string lpszUsername,
           string lpszDomain,
           string lpszPassword,
           int dwLogonType,
           int dwLogonProvider,
           ref IntPtr phToken);
        //登出
        [DllImport("kernel32.dll")]
        public extern static bool CloseHandle(IntPtr hToken);

        public Class1()
        {
            string UserName = "username";
            string MachineName = "192.168.0.10";
            string Pw = "password";
            string IPath = @"\\" + MachineName + @"\shared";
            const int LOGON32_PROVIDER_DEFAULT = 0;
            const int LOGON32_LOGON_NEW_CREDENTIALS = 9;
            IntPtr tokenHandle = new IntPtr(0);
            tokenHandle = IntPtr.Zero;
            //將登入的Token放在tokenHandle
            bool returnValue = LogonUser(UserName, MachineName, Pw,
            LOGON32_LOGON_NEW_CREDENTIALS,
            LOGON32_PROVIDER_DEFAULT,
            ref tokenHandle);

            //讓程式模擬登入的使用者
            WindowsIdentity w = new WindowsIdentity(tokenHandle);
            w.Impersonate();
            if (false == returnValue)
            {
                //登入失敗的處理
                return;
            }
            //取得該目錄下的所有檔案名稱
            DirectoryInfo dir = new DirectoryInfo(IPath);
            FileInfo[] inf = dir.GetFiles();
            for (int i = 0; i < inf.Length; i++)
            {
                Console.WriteLine(inf[i].Name);
            }
        }
    }
}

附註

如果電腦存在於網域, LogonUser的第二個參數須用網域名:

LogonUser(UserName, "myDomain", Pw,LOGON32_LOGON_NEW_CREDENTIALS,
LOGON32_PROVIDER_DEFAULT, ref tokenHandle);

相關參考網頁: http://www.thecodeproject.com/csharp/cpimpersonation1.asp

2006/08/25