需要一种以编程方式检查Windows服务状态的方法

时间：2008-12-02 16:04:20

标签： java command-line windows-services

情况如下：

我被要求使用InstallAnywhere 8，这是一个基于Java的安装程序IDE，允许启动和停止Windows服务，但没有内置方法来查询它们的状态。幸运的是，它允许您使用Java创建自定义操作，可以在安装过程中随时调用（通过我认为是一个相当复杂的API）。

我只需要一些可以告诉我是否启动或停止特定服务的内容。

IDE还允许调用批处理脚本，所以这也是一个选项，虽然一旦运行脚本，几乎没有办法验证它是否成功，所以我试图避免这种情况。

欢迎任何建议或批评。

9 个答案:

答案 0 :(得分：15)

这就是我必须做的事情。这很难看，但效果很好。

String STATE_PREFIX = "STATE              : ";

String s = runProcess("sc query \""+serviceName+"\"");
// check that the temp string contains the status prefix
int ix = s.indexOf(STATE_PREFIX);
if (ix >= 0) {
  // compare status number to one of the states
  String stateStr = s.substring(ix+STATE_PREFIX.length(), ix+STATE_PREFIX.length() + 1);
  int state = Integer.parseInt(stateStr);
  switch(state) {
    case (1): // service stopped
      break;
    case (4): // service started
      break;
   }
}

runProcess是一个私有方法，它将给定字符串作为命令行进程运行并返回结果输出。正如我所说，丑陋，但有效。希望这会有所帮助。

答案 1 :(得分：6)

您可以即时创建一个小型VBS，启动它并捕获其返回码。

import java.io.File;
import java.io.FileWriter;

public class VBSUtils {
  private VBSUtils() {  }

  public static boolean isServiceRunning(String serviceName) {
    try {
        File file = File.createTempFile("realhowto",".vbs");
        file.deleteOnExit();
        FileWriter fw = new java.io.FileWriter(file);

        String vbs = "Set sh = CreateObject(\"Shell.Application\") \n"
                   + "If sh.IsServiceRunning(\""+ serviceName +"\") Then \n"
                   + "   wscript.Quit(1) \n"
                   + "End If \n"
                   + "wscript.Quit(0) \n";
        fw.write(vbs);
        fw.close();
        Process p = Runtime.getRuntime().exec("wscript " + file.getPath());
        p.waitFor();
        return (p.exitValue() == 1);
    }
    catch(Exception e){
        e.printStackTrace();
    }
    return false;
  }


  public static void main(String[] args){
    //
    // DEMO
    //
    String result = "";
    msgBox("Check if service 'Themes' is running (should be yes)");
    result = isServiceRunning("Themes") ? "" : " NOT ";
    msgBox("service 'Themes' is " + result + " running ");

    msgBox("Check if service 'foo' is running (should be no)");
    result = isServiceRunning("foo") ? "" : " NOT ";
    msgBox("service 'foo' is " + result + " running ");
  }

  public static void msgBox(String msg) {
    javax.swing.JOptionPane.showConfirmDialog((java.awt.Component)
       null, msg, "VBSUtils", javax.swing.JOptionPane.DEFAULT_OPTION);
  }
}

答案 2 :(得分：3)

我多年来一直在与安装程序打交道，其诀窍是创建自己的EXE并在安装时调用它。这提供了良好的灵活性，例如在发生错误时显示精确的错误消息，并具有基于成功的返回值，以便安装人员知道发生了什么。

以下是如何启动，停止和查询Windows服务（C ++）的状态： http://msdn.microsoft.com/en-us/library/ms684941(VS.85).aspx （VB和C＃提供类似的功能）

答案 3 :(得分：3)

根据其他答案，我构建了以下代码来检查Windows服务状态：

public void checkService() {
  String serviceName = "myService";  

  try {
    Process process = new ProcessBuilder("C:\\Windows\\System32\\sc.exe", "query" , serviceName ).start();
    InputStream is = process.getInputStream();
    InputStreamReader isr = new InputStreamReader(is);
    BufferedReader br = new BufferedReader(isr);

    String line;
    String scOutput = "";

    // Append the buffer lines into one string
    while ((line = br.readLine()) != null) {
        scOutput +=  line + "\n" ;
    }

    if (scOutput.contains("STATE")) {
        if (scOutput.contains("RUNNING")) {
            System.out.println("Service running");
        } else {
            System.out.println("Service stopped");
        }       
    } else {
        System.out.println("Unknown service");
    }
  } catch (IOException e) {
    e.printStackTrace();
  } 
}

答案 4 :(得分：2)

过去我在Java Service Wrapper上运气不错。根据您的具体情况，您可能需要付费才能使用它。但它提供了一个支持Java的干净解决方案，可以在InstallAnywhere环境中使用（我认为）有点麻烦。这也将允许您支持Unix机上的服务。

http://wrapper.tanukisoftware.org/doc/english/download.jsp

答案 5 :(得分：1)

在黑暗中拍摄，但请查看Install Anywhere java文档。

具体来说，

/javadoc/com/installshield/wizard/platform/win32/Win32Service.html

班级：

com.installshield.wizard.platform.win32
Interface Win32Service

All Superinterfaces:
    Service

方法：

public NTServiceStatus queryNTServiceStatus(String name)
                                     throws ServiceException

    Calls the Win32 QueryServiceStatus to retrieve the status of the specified service. See the Win32 documentation for this API for more information.

    Parameters:
        name - The internal name of the service. 
    Throws:
        ServiceException

答案 6 :(得分：1)

这是一个直接的C＃/ P / Invoke解决方案。

        /// <summary>
    /// Returns true if the specified service is running, or false if it is not present or not running.
    /// </summary>
    /// <param name="serviceName">Name of the service to check.</param>
    /// <returns>Returns true if the specified service is running, or false if it is not present or not running.</returns>
    static bool IsServiceRunning(string serviceName)
    {
        bool rVal = false;
        try
        {
            IntPtr smHandle = NativeMethods.OpenSCManager(null, null, NativeMethods.ServiceAccess.ENUMERATE_SERVICE);
            if (smHandle != IntPtr.Zero)
            {
                IntPtr svHandle = NativeMethods.OpenService(smHandle, serviceName, NativeMethods.ServiceAccess.ENUMERATE_SERVICE);
                if (svHandle != IntPtr.Zero)
                {
                    NativeMethods.SERVICE_STATUS servStat = new NativeMethods.SERVICE_STATUS();
                    if (NativeMethods.QueryServiceStatus(svHandle, servStat))
                    {
                        rVal = servStat.dwCurrentState == NativeMethods.ServiceState.Running;
                    }
                    NativeMethods.CloseServiceHandle(svHandle);
                }
                NativeMethods.CloseServiceHandle(smHandle);
            }
        }
        catch (System.Exception )
        {

        }
        return rVal;
    }

public static class NativeMethods
{
    [DllImport("AdvApi32")]
    public static extern IntPtr OpenSCManager(string machineName, string databaseName, ServiceAccess access);
    [DllImport("AdvApi32")]
    public static extern IntPtr OpenService(IntPtr serviceManagerHandle, string serviceName, ServiceAccess access);
    [DllImport("AdvApi32")]
    public static extern bool CloseServiceHandle(IntPtr serviceHandle);
    [DllImport("AdvApi32")]
    public static extern bool QueryServiceStatus(IntPtr serviceHandle, [Out] SERVICE_STATUS status);

    [Flags]
    public enum ServiceAccess : uint
    {
        ALL_ACCESS = 0xF003F,
        CREATE_SERVICE = 0x2,
        CONNECT = 0x1,
        ENUMERATE_SERVICE = 0x4,
        LOCK = 0x8,
        MODIFY_BOOT_CONFIG = 0x20,
        QUERY_LOCK_STATUS = 0x10,
        GENERIC_READ = 0x80000000,
        GENERIC_WRITE = 0x40000000,
        GENERIC_EXECUTE = 0x20000000,
        GENERIC_ALL = 0x10000000
    }

    public enum ServiceState
    {
        Stopped = 1,
        StopPending = 3,
        StartPending = 2,
        Running = 4,
        Paused = 7,
        PausePending =6,
        ContinuePending=5
    }

    [StructLayout(LayoutKind.Sequential, Pack = 1)]
    public class SERVICE_STATUS
    {
        public int dwServiceType;
        public ServiceState dwCurrentState;
        public int dwControlsAccepted;
        public int dwWin32ExitCode;
        public int dwServiceSpecificExitCode;
        public int dwCheckPoint;
        public int dwWaitHint;
    };
}

答案 7 :(得分：0)

在启动期间，使用File.deleteOnExit()创建一个文件。

检查脚本中是否存在该文件。

答案 8 :(得分：0)

只需调用此方法即可检查服务状态是否正在运行。

public boolean checkIfServiceRunning(String serviceName) {
    Process process;
    try {
      process = Runtime.getRuntime().exec("sc query " + serviceName);
      Scanner reader = new Scanner(process.getInputStream(), "UTF-8");
      while(reader.hasNextLine()) {
         if(reader.nextLine().contains("RUNNING")) {
           return true;
         }
      }
     } catch (IOException e) {
         e.printStackTrace();
     }            
     return false;
}
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