java 反射调用成员方法 博客分类: Javajava swing java 反射调用成员方法
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2024-02-23 18:43:52
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java 反射调用成员方法
public static GenericDialog showScreenshotDialog(JTextComponent area2, int width, int height){ Class clazz=area2.getClass(); Object obj=null; Method m = null; try { m = clazz.getMethod("showScreenshotDialog", new Class[]{int.class,int.class}); m.setAccessible(true); obj=m.invoke(area2, width,height); } catch (NoSuchMethodException e) { e.printStackTrace(); } catch (SecurityException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (InvocationTargetException e) { e.printStackTrace(); } if(null==m){//抛异常 :NoSuchMethodException GenericDialog genericDialog= screenshotDialog; Point point= area2.getLocationOnScreen(); genericDialog.setBounds(point.x,point.y,width,height); genericDialog.launchFrame(); return genericDialog; } return null; } public static GenericDialog getScreenshotDialog(JTextComponent area2) { return (GenericDialog) getReflectGetMethod(area2, "getScreenshotDialog", null, null); } public static JDialog getMaxDialog(JTextComponent area2) { return (JDialog) getReflectGetMethod(area2, "getMaxJDialog", null, null); } public static void closeMaxDialog(JDialog area2) { getReflectGetMethod(area2, "closeDialog", null, null); } public static void setMaxDialog(JTextComponent area2, Object dialog, Class clazz) { getReflectGetMethod(area2, "setMaxJDialog", dialog, clazz); } public static Integer getMaxStatus(JTextComponent area2) { return (Integer) getReflectGetMethod(area2, "getMaxStatus", null, null); } public static void setMaxStatus(JTextComponent area2, int maxStatus) { getReflectGetMethod(area2, "setMaxStatus", maxStatus, null); } public static Object getReflectGetMethod(Object area2, String methodName, Object param, Class clazz2) { Class clazz=area2.getClass(); Object obj=null; Method m; try { if (clazz2 == null && null != param) { clazz2 = param.getClass(); } if (null == clazz2) { m = clazz.getMethod(methodName, new Class[]{}); } else { m = clazz.getMethod(methodName, new Class[]{clazz2}); } m.setAccessible(true); if (null == param) { obj = m.invoke(area2); } else { obj = m.invoke(area2, param); } } catch (NoSuchMethodException e) { e.printStackTrace(); } catch (SecurityException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (InvocationTargetException e) { e.printStackTrace(); } return obj; } public static Map<String, ActionCallback> getActionCallbackMap(JTextComponent area2) { return (Map<String, ActionCallback>) getReflectGetMethod(area2, "getActionCallbackMap", null, null); }