Java thelostworld DBcrack开发（一）最近想写个东西：琢磨了一天（构思了一下）向上效果图：目前才

最近想写个东西：琢磨了一天（构思了一下）

向上效果图：目前才写mysql，架子差不多好了。

主要是设计用途是内网跨平台：虽然py的很简答，但是特定情况下需要依赖。Java打包后有java环境就能运行。

主要是的和谐是多线程模块：

ExecutorService：

public class ExecutorService {

  private static ExecutorService es = null;
  private Object returnCall = null;

  private ExecutorService() {
  }

  public static ExecutorService newInstance() {
    if (es == null) {
      es = new ExecutorService();
    }
    return es;
  }

  public Future submit(final Callable call) {
    final FutureTask future = new FutureTask();
    Thread thread = new Thread(new Runnable() {
      @Override
      public void run() {
        try {
          returnCall = call.call();
          future.set(returnCall);
        } catch (Exception e) {
          e.printStackTrace();
        }
        
      }
    });
    thread.start();
    future.setExecuteThread(thread);
    return future;
  }
}

FutureTask类：

class FutureTask implements Future {
  
  private Object returnObj = null;
  private Thread executeThread = null;

  @Override
  public Object get() {
    if (returnObj == null) {
      try {
        executeThread.join();
      } catch (Exception e) {
        e.printStackTrace();
      }
      
    }
    return returnObj;
  }
  
  public void set(Object obj){
    returnObj = obj;
  }

  /**
   * @return the executeThread
   */
  public Thread getExecuteThread() {
    return executeThread;
  }

  /**
   * @param executeThread the executeThread to set
   */
  public void setExecuteThread(Thread executeThread) {
    this.executeThread = executeThread;
  }
}

核心执行调用：

ExecutorService es = ExecutorService.newInstance();
Callable task = new MyCallableClass();
Future future = es.submit(task);
//数据库连接
try {
    Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException e) {
    System.out.println("找不到驱动程序类 ，加载驱动失败！");
    e.printStackTrace();
}
String url = "jdbc:mysql://" + ip + ":3306?useSSL=true";
String username = user;
String password = pass;
try {
    DriverManager.setLoginTimeout(3);
    if (DriverManager.getConnection(url, username, password) != null) {
        return true;
    }
    return false;
} catch (SQLException se) {
    if (se.getErrorCode() != 0) {
        return false;
    }