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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Collection;
import java.util.Hashtable;
 
public class JavaWindowsTaskManager {
 
	/**
	 * 杀死一个进程
	 * @param task 进程号
	 *            
	 */
	public static void killTask(Integer pid) {
		try {
			// 取得任务列表
			Hashtable<Integer, WindowsTask> tasks = getTaskList();
			WindowsTask task = tasks.get(pid);
			if(task != null){
				Runtime.getRuntime().exec("tskill " + pid);
			}			
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
 
	/**
	 * 杀死指定名称的所有进程
	 * @param taskName
	 */
	public static void killTask(String taskName){
		try{
			Hashtable<Integer, WindowsTask> tasks = getTaskList();
			Collection<WindowsTask> allTasks = tasks.values();
			for(WindowsTask task: allTasks){
				if(task.getName().equals(taskName)){
					killTask(task.getPid());
				}
			}
 
		}catch (Exception e) {
			e.printStackTrace();
		}
	}
 
	/**
	 * 返回当前机器的所有进程
	 * 
	 * @return
	 */
	public static Hashtable<Integer, WindowsTask> getTaskList() {
		Hashtable<Integer, WindowsTask> tasks = new Hashtable<Integer, WindowsTask>();
		try {
			Process process = Runtime.getRuntime().exec("taskList");
			InputStreamReader in = new InputStreamReader(process
					.getInputStream(), "GBK");
			BufferedReader reader = new BufferedReader(in);
			String taskInfo = null;
			WindowsTask task = null;
			String tmp = null;
			while ((taskInfo = reader.readLine()) != null) {
				if (taskInfo.trim().length() > 0
						&& (taskInfo.contains("Services") || taskInfo
								.contains("Console"))) {
					System.out.println(taskInfo);
					task = new WindowsTask();
					tmp = taskInfo.substring(0, 26);
					task.setName(tmp.trim());
					tmp = taskInfo.substring(26, 35);
					task.setPid(Integer.valueOf(tmp.trim()));
 
					tmp = taskInfo.substring(35, 52);
					task.setSessionName(tmp.trim());
					tmp = taskInfo.substring(52, 64);
					task.setSessionId(Integer.valueOf(tmp.trim()));
					tmp = taskInfo.substring(64, taskInfo.lastIndexOf("K"));
					tmp = tmp.replaceAll(",", "");
					task.setMem(Long.valueOf(tmp.trim()));
 
					tasks.put(task.getPid(), task);
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return tasks;
	}
 
	/**
	 * 启动一个进程,传入的值可以是服务名,也可以是可执行文件的全路径名
	 * 
	 * @param task
	 */
	public static void startTask(String task) {
		try {
			Runtime.getRuntime().exec(task);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
 
}
 
class WindowsTask {
	// 映像名称
	private String name;
	// PID
	private Integer pid;
	// 会话名
	private String sessionName;
	// 会话编号
	private Integer sessionId;
	// 内存使用
	private long mem;
 
	public String getName() {
		return name;
	}
 
	public void setName(String name) {
		this.name = name;
	}
 
	public Integer getPid() {
		return pid;
	}
 
	public void setPid(Integer pid) {
		this.pid = pid;
	}
 
	public String getSessionName() {
		return sessionName;
	}
 
	public void setSessionName(String sessionName) {
		this.sessionName = sessionName;
	}
 
	public Integer getSessionId() {
		return sessionId;
	}
 
	public void setSessionId(Integer sessionId) {
		this.sessionId = sessionId;
	}
 
	public long getMem() {
		return mem;
	}
 
	public void setMem(long mem) {
		this.mem = mem;
	}
}