下面的代码是在 java 中运行按钮工作正常并在它收到我选择的错误时向我的号码发送一条消息，然后它在 TextboxArea 中显示错误但停止按钮没有结束它退出程序的循环。如何我可以实现停止按钮吗
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package postilion_error_checker;
import java.io.IOException;
import java.net.URL;
import java.sql.*;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ResourceBundle;
import java.util.Timer;
import java.util.TimerTask;
import java.util.logging.FileHandler;
import java.util.logging.Handler;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.logging.SimpleFormatter;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Button;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Label;
import javafx.scene.control.ScrollPane;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
/**
*
* @author kithinjid
*/
public class checker_guiController implements Initializable {
static Logger log;
static Handler file_handler;
static Connection conn=null;
static Statement st=null;
static ResultSet rs=null;
static int i = 0;
int counter=0;
static boolean checker=true;
String number;
String Sink_node;
String Rsp_code;
int Respose_code;
@FXML
private TextArea TA;
@FXML
private Label label;
@FXML
private TextField get_NO;
@FXML
private TextArea preview;
@FXML
private Button run;
@FXML
private Button stop;
@FXML
private ComboBox item;
@FXML
private ComboBox item2;
@FXML
private void handleRUNAction(ActionEvent event)
{
scheduled();
System.out.println("execution started");
String out="execution started";
TA.appendText(out+ "\n");
}
@FXML
private void handleButtonAction(ActionEvent event)
{
number=get_NO.getText();
Sink_node=item.getSelectionModel().getSelectedItem().toString();
Rsp_code=item2.getSelectionModel().getSelectedItem().toString();
Respose_code=Integer.parseInt(Rsp_code.substring(0, 1));
preview.appendText("RECEIVER:"+number + "\n");
preview.appendText("SINK NODE:"+Sink_node + "\n");
preview.appendText("RESPONSE CODE:"+Rsp_code + "\n");
preview.appendText("=========================\n");
get_NO.clear();
}
@FXML
private void handlestopAction(ActionEvent event)
{
dbclose();
System.exit(0);
}
@Override
public void initialize(URL url, ResourceBundle rb)
{
}
private void dbconnect()
{
String username="Postilion";
String password="Password12";
String hostname="jdbc:sqlserver://172.16.112.6;databaseName=realtime";
try
{
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
conn=DriverManager.getConnection(hostname,username,password);
System.out.println("TIME:"+dateString("MM:dd-HH:mm:ss")+":connected to database");
String out_data="TIME:"+dateString("MM:dd-HH:mm:ss")+":connected to database";
TA.appendText(out_data+ "\n");
}
catch(Exception e)
{
e.printStackTrace();
}
}
private ResultSet check_00(String query1)
{
dbconnect();
try
{
st=conn.createStatement();
rs=st.executeQuery(query1);
}catch(Exception e)
{
e.printStackTrace();
}
return rs ;
}
public void dbclose()
{
counter=0;
try {
conn.close();
st.close();
} catch (SQLException ex) {
Logger.getLogger(checker_guiController.class.getName()).log(Level.SEVERE, null, ex);
}
}
public void scheduled()
{
Timer timer=new Timer();
timer.schedule(new TimerTask() {
@Override
public void run()
{
while(checker==true)
{
// log=logger.getLogger("my logger");
// try {
// file_handler=new FileHandler("C:\\Users\\kithinjid\\Google Drive\\interswitch\\NetBeansProjects\\POSTILION_ERROR CHECKER\\dist\\logg.txt");
// SimpleFormatter formatter=new SimpleFormatter();
// file_handler.setFormatter(formatter);
// log.addHandler(file_handler);
// } catch (IOException ex) {
// log.info(dateString("HHmmss"));
// Logger.getLogger(POSTILION_ERROR_CHECKER.class.getName()).log(Level.SEVERE, null, ex);
// } catch (SecurityException ex)
// {
// Logger.getLogger(POSTILION_ERROR_CHECKER.class.getName()).log(Level.SEVERE, null, ex);
//// }
String query="SELECT TOP 10 [tran_nr]\n" +
" ,[gmt_date_time]\n" +
" ,[time_local]\n" +
" ,[date_local]\n" +
" ,[sink_node]\n" +
" ,[rsp_code_req_rsp]\n" +
" ,[rsp_code_cmp]\n" +
" ,[rsp_code_rev]\n" +
" FROM [realtime].[dbo].[tm_trans_10]where sink_node ='"+Sink_node+"' ORDER BY tran_nr desc";
dbconnect();
try
{
ResultSet result=check_00(query);
while(result.next()==true)
{
//loop for counter and displaying
int response=Integer.parseInt(result.getString("rsp_code_req_rsp"));
System.out.println(response);
TA.appendText(response+ "\n");
if (response==0)
{
counter++;
if (counter==5)
{
System.out.println("TIME:"+dateString("MM:dd-HH:mm:ss")+"--error respose code:91 of count:"+ counter+" to sink node:"+Sink_node);
String output="TIME:"+dateString("MM:dd-HH:mm:ss")+"--error respose code:91 of count:"+ counter+" to sink node:"+Sink_node;
TA.appendText(output);
send_sms(number,output);
}
}
}
dbclose();
delay();
counter=0;
}catch(Exception e)
{
e.printStackTrace();
}
// throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
}
},0,30000);
}
public static void delay()
{
try
{
Thread.sleep(5 * 60 * 1000);
}catch(Exception e)
{
}
}
private static String dateString(String formart)
{
DateFormat dateFormat = new SimpleDateFormat(formart);
java.util.Date date = new java.util.Date();
return dateFormat.format(date);
}
public static void send_sms(String receiver, String text)
{
String app_name="Postilion_Error_checker";
String sender_ID="VERVE";
String user_Name="PostilionErrorChecker";
String pass_word="Post4334dild";
String output=sendSMS(receiver,text, app_name, sender_ID, null,user_Name, pass_word);
System.out.println(output);
}
private static String sendSMS(java.lang.String recipient, java.lang.String text, java.lang.String appName, java.lang.String senderID, java.lang.String reference, java.lang.String userName, java.lang.String password) {
org.tempuri.SMSGatewayWs service = new org.tempuri.SMSGatewayWs();
org.tempuri.SMSGatewayWsSoap port = service.getSMSGatewayWsSoap();
return port.sendSMS(recipient, text, appName, senderID, reference, userName, password);
}
}
首先是java。你的项目结构必须代表一些大的东西，一个企业、一个工厂甚至整个城市及其所有的生态系统。现在你有一块砖，你的砖比普通砖大 10 倍左右。阅读单一责任原则，您将开始更容易地实施这些事情。好的，这是一个很好的题外话，对于您的问题： System.exit() 会杀死您的 JVM，因此通常开发人员会远离它。但是，如果您坚持使用它 - 您可以将它用于“退出”/“关闭”按钮。
我看到你有一个递归方法。也许应该有一个类似这样的退出标准：
if(isStopped)return
并更换你的
System.exit()
和
isStopped = true;
并在您的类的顶部将其声明为您的第一个版本的静态。
public static boolean isStopped = false;
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我来说两句