java 反射调用成员方法 博客分类： Javajava swing java 反射调用成员方法

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);
    }