运行jar时的SWTexception：线程“main”中的exceptionorg.eclipse.swt.SWTException：无效的线程访问

从终端执行我的jar时，我得到以下内容：

***WARNING: Display must be created on main thread due to Cocoa restrictions. Exception in thread "main" org.eclipse.swt.SWTException: Invalid thread access at org.eclipse.swt.SWT.error(Unknown Source) at org.eclipse.swt.SWT.error(Unknown Source) at org.eclipse.swt.SWT.error(Unknown Source) at org.eclipse.swt.widgets.Display.error(Unknown Source) at org.eclipse.swt.widgets.Display.createDisplay(Unknown Source) at org.eclipse.swt.widgets.Display.create(Unknown Source) at org.eclipse.swt.graphics.Device.(Unknown Source) at org.eclipse.swt.widgets.Display.(Unknown Source) at org.eclipse.swt.widgets.Display.(Unknown Source) at commonDenom.UserInterface.main(UserInterface.java:26)an error 

我已经搜索了他的错误并发现了一些具有相同的执行输出错误，但没有解决我的情况。

以下详细介绍了文件的位置，清单内容，所采用的终端步骤以及最终涉及的两个类文件的代码内容。

文件位置

• SWT库

   /Dropbox/workspace/org.eclipse.swt/swt.jar 

• 表现

   /Dropbox/workspace/commonDenom/bin/Manifest.txt 

• 类

    /Dropbox/workspace/commonDenom/bin/commonDenom/ commonDenom.class UserInterface.class UserInterface$1.class (I didn't create this) UserInterface$2.class (I didn't create this) 

• CommonDenom.jar（见下面的创建）：

   /Dropbox/workspace/commonDenom/bin/CommonDenom.jar 

Manifest.txt内容：

 Main-Class: commonDenom.UserInterface Class-Path: /Users/skuredjian/Dropbox/workspace/org.eclipse.swt/swt.jar 

终端行动

• 目录更改

   cd Dropbox/workspace/comonDenom/bin/ 

• .jar创作

   jar cfm CommonDenom.jar ../Manifest.txt * 

• 清单检查

   jar tf CommonDenom.jar META-INF/ META-INF/MANIFEST.MF commonDenom/ commonDenom/commonDenom.class commonDenom/UserInterface$1.class commonDenom/UserInterface$2.class commonDenom/UserInterface.class swt.jar 

• CommonDenom.jar执行

   java -jar CommonDenom.jar ***WARNING: Display must be created on main thread due to Cocoa restrictions. Exception in thread "main" org.eclipse.swt.SWTException: Invalid thread access at org.eclipse.swt.SWT.error(Unknown Source) at org.eclipse.swt.SWT.error(Unknown Source) at org.eclipse.swt.SWT.error(Unknown Source) at org.eclipse.swt.widgets.Display.error(Unknown Source) at org.eclipse.swt.widgets.Display.createDisplay(Unknown Source) at org.eclipse.swt.widgets.Display.create(Unknown Source) at org.eclipse.swt.graphics.Device.(Unknown Source) at org.eclipse.swt.widgets.Display.(Unknown Source) at org.eclipse.swt.widgets.Display.(Unknown Source) at commonDenom.UserInterface.main(UserInterface.java:26) 

码

UserInterface.class内容

 package commonDenom; import java.util.Arrays; import java.util.Scanner; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class UserInterface { Shell shell; Button btnNext; Button btnDone; Text input; Text output; static int count; static int[] finalNums; int[] nums = new int[1000]; public static void main(String[] args){ Display display = new Display(); new UserInterface(display); display.dispose(); } public UserInterface(Display display){ shell = new Shell(display); shell.setSize(220,350); shell.open(); input = new Text(shell, SWT.SINGLE); input.setBounds(10, 10, 100, 20); btnNext = new Button(shell, SWT.PUSH); btnNext.setBounds(10, 40, 100, 30); btnNext.setText("Next"); nextPress(); btnDone = new Button(shell, SWT.PUSH); btnDone.setBounds(10, 80, 100, 30); btnDone.setText("Done"); donePress(); output = new Text(shell, SWT.SINGLE); output.setBounds(10, 120, 200, 200); while(!shell.isDisposed()){ if(!display.readAndDispatch()){ display.sleep(); } } } public void nextPress(){ btnNext.addSelectionListener(new SelectionAdapter(){ int x = 0; @Override public void widgetSelected(SelectionEvent e) { nums[x] = Integer.parseInt(input.getText()); System.out.println("nums[" + x + "]:" + nums[x]); x++; count++; } }); } public void donePress(){ btnDone.addSelectionListener(new SelectionAdapter(){ @Override public void widgetSelected(SelectionEvent e) { finalNums = new int[count]; for(int i = 0; i < count; i++){ finalNums[i] = nums[i]; } System.out.println("finalNums:" + Arrays.toString(finalNums)); commonDenom.compare(); if(commonDenom.getResult() == 0){ output.setText(Arrays.toString(finalNums) + "\nThese numbers do not have a \ncommon multiplier"); } else{ output.setText(Arrays.toString(finalNums) + "\nResult:" + String.valueOf(commonDenom.getResult())); } } }); } public static int[] getNums(){ return finalNums; } } 

commonDenom.class内容：

 package commonDenom; import java.awt.Button; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import java.util.Scanner; import org.eclipse.swt.widgets.*; public class commonDenom{ static int result; public static void main(String[] args){ } public static String compare(){ result = 0; int mult = 0; int x = 1; int[] nums = UserInterface.getNums(); // find highest in set for(int i = 0; i  mult) mult = nums[i]; } // finds lowest common multiple for(int i = 0; i < nums.length;){ if((mult * x) % nums[i] == 0){ result = mult * x; i++; } else{ result = 0; x++; i = 0; } } } public static int getResult(){ return result; } } 

Answer 1

在Mac上，您必须指定-XstartOnFirstThread命令行选项以使SWT正确运行。