我有一个像这样的Jframe表单类
public class LoginForm extends javax.swing.JFrame
在此，我得到用户名＆amp;来自用户的密码，然后将其发送到php服务器进行验证 将获得响应为OK或无效用户。我有另一个名为＆＃39; 公共类的类，LoginTimer实现了Runnable＆＃39; 。在这个类中，我有一些代码要执行。我希望在＆＃39; LoginForm ＆＃39;当我得到响应时，控件将转到第二类＆＃39; LoginTimer ＆＃39;意味着第二类将是 调用。请告诉我怎么做？ ================================================== ===================
private void sendGet(String username,String pwd) throws Exception
{
String url = "http://localhost/login.php?username="+username+ "&password="+pwd;
final String USER_AGENT = "Mozilla/5.0";
URL obj = new URL(url);
HttpURLConnection con = (HttpURLConnection) obj.openConnection();
con.setRequestMethod("GET");
con.setRequestProperty("User-Agent", USER_AGENT);
int responseCode = con.getResponseCode();
System.out.println("\nSending 'GET' request to URL : " + url);
System.out.println("Response Code : " + responseCode);
BufferedReader in = new BufferedReader(
new InputStreamReader(con.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null)
{
response.append(inputLine);
}
in.close();
//print result
String r=response.toString();
System.out.println("String "+r);
if(r.equals("OK"))
{
System.out.println("you are a valid user");
}
else
{
System.out.println("You are an invalid user");
}
}
以下是 LoginTimer 类的代码。在这里，我得到可见窗口的名称，然后线程启动，并在 run（）方法我调用 sendGet（）方法将窗口名称发送到php服务器页面。我希望当我在 LoginForm 类中得到OK响应时， LoginTimer 类将被自动调用并执行。我的意思是，当用户登录＆amp;验证然后将窗口名称发送到php服务器将自动启动。
public class LoginTimer implements Runnable
{
LoginTimer lk1;
String s3;
static int arraySize=10;
static int arrayGrowth=2;
static String[] m=new String[arraySize];
static int count=0;
@Override
public void run()
{
for(int ck=0;ck<3;ck++)
{File file=new File("G:\\check.txt");
Scanner scanner = null;
try
{
scanner = new Scanner(file);
}
catch (FileNotFoundException ex)
{
Logger.getLogger(LoginTimer.class.getName()).log(Level.SEVERE, null, ex);
}
while(scanner.hasNext())
{
String[] tokens = scanner.nextLine().split(":");
String last = tokens[1];
// System.out.println(last);
if(last!=null)
{
try
{
lk1.sendGet(last,m);
}
catch (Exception ex)
{
Logger.getLogger(LoginTimer.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
try {
Thread.sleep(5000);
} catch (InterruptedException ex) {
Logger.getLogger(LoginTimer.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
public static void main(String[] args)
{
(new Thread(new LoginTimer())).start();
final List<WindowInfo> inflList=new ArrayList<WindowInfo>();
final List<Integer> order=new ArrayList<Integer>();
int top = User32.instance.GetTopWindow(0);
while (top!=0)
{
order.add(top);
top = User32.instance.GetWindow(top, User32.GW_HWNDNEXT);
}
User32.instance.EnumWindows(new WndEnumProc()
{
public boolean callback(int hWnd, int lParam)
{
if (User32.instance.IsWindowVisible(hWnd))
{
RECT r = new RECT();
User32.instance.GetWindowRect(hWnd, r);
if (r.left>-32000)
{ // minimized
byte[] buffer = new byte[1024];
User32.instance.GetWindowTextA(hWnd, buffer, buffer.length);
String title = Native.toString(buffer);
//lk1.getid(title);
if (m.length == count)
{
// expand list
m = Arrays.copyOf(m, m.length + arrayGrowth);
}
m[count]=Native.toString(buffer);
System.out.println("title===="+m[count]);
count++;
inflList.add(new WindowInfo(hWnd, r, title));
}
}
return true;
}
}, 0);
Collections.sort(inflList, new Comparator<WindowInfo>()
{
public int compare(WindowInfo o1, WindowInfo o2)
{
return order.indexOf(o1.hwnd)-order.indexOf(o2.hwnd);
}
});
for (WindowInfo w : inflList)
{
System.out.println(w);
}
}
public static interface WndEnumProc extends StdCallLibrary.StdCallCallback
{
boolean callback (int hWnd, int lParam);
}
public static interface User32 extends StdCallLibrary
{
final User32 instance = (User32) Native.loadLibrary ("user32", User32.class);
boolean EnumWindows (WndEnumProc wndenumproc, int lParam);
boolean IsWindowVisible(int hWnd);
int GetWindowRect(int hWnd, RECT r);
void GetWindowTextA(int hWnd, byte[] buffer, int buflen);
int GetTopWindow(int hWnd);
int GetWindow(int hWnd, int flag);
final int GW_HWNDNEXT = 2;
}
public static class RECT extends Structure
{
public int left,top,right,bottom;
}
public static class WindowInfo
{
int hwnd;
RECT rect;
String title;
public WindowInfo(int hwnd, RECT rect, String title)
{
this.hwnd = hwnd; this.rect = rect; this.title = title;
}
public String toString()
{
return String.format("(%d,%d)-(%d,%d) : \"%s\"",
rect.left ,rect.top,rect.right,rect.bottom,title);
}
}
public static void sendGet(String last1,String[] get) throws Exception
{
for(int t=0;t<get.length;t++)
{
if(get[t]!=null)
{
String url = "http://localhost/add_windows.php?username="+last1+"&windowname="+get[t];
final String USER_AGENT = "Mozilla/5.0";
URL obj = new URL(url);
HttpURLConnection con = (HttpURLConnection) obj.openConnection();
con.setRequestMethod("GET");
con.setRequestProperty("User-Agent", USER_AGENT);
int responseCode = con.getResponseCode();
System.out.println("\nSending 'GET' request to URL : " + url);
System.out.println("Response Code : " + responseCode);
BufferedReader in = new BufferedReader(
new InputStreamReader(con.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null)
{
response.append(inputLine);
}
in.close();
String r=response.toString();
System.out.println("String "+r);
}
}
}
}
答案 0 :(得分：1)
当你正在实现runnable类时，你正在创建线程。因此，创建LoginTimer的对象为
LoginTimer lt = new LoginTimer();
从php页面获得结果后，在LoginForm class中。
现在致电
lt.start();
创建对象后;这将调用ur run方法的线程。
现在你的LoginTimer class覆盖了像
class LoginTimer implements Runnable
{
public void run()
{
//put your code which you want to execute now ...
}
}
答案 1 :(得分：0)
由于您的类实现了java.lang.Runnable。
要让线程执行run（）方法，请将class_implementing_Runnable的实例传递给构造函数中的Thread.Something like
Thread thread = new Thread(new LoginTimer());
thread.start();