exceptionhandle.java

Java SWT代码

package util;

import java.io.PrintWriter;
import java.io.StringWriter;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
 

public class ExceptionHandle {
	private static Log logger = LogFactory.getLog(ExceptionHandle.class);
	
	/**
	 * Exception handle
	 * @param e
	 * @param exceptionSourceClass 异常是从哪一个类里抛出来的
	 */
	public static void doException(Throwable e, Class exceptionSourceClass) {
		if (Display.getCurrent() != null){
			doException (Display.getCurrent().getActiveShell(), e, exceptionSourceClass);
		} else {
			logger.error(getExceptionStatckTrace(e));
		}
	}
	
	public static void doException(Throwable e){
		doException(e, null);
	}

	/**
	 * Exception handle
	 * @param strMessage
	 */
	public static void doException(String strMessage) {
		
		if (logger.isWarnEnabled()){
			logger.warn(strMessage);
		}
		
		MessageDialog.openWarning(Display.getCurrent().getActiveShell(),"错误",strMessage);
	}
	
	/**
	 * Exception handle
	 * @param e
	 */
	public static void doUnknownException(Exception e) {
		
		if (logger.isWarnEnabled()){
			String exeptionInfo = getExceptionStatckTrace(e);
			logger.warn(exeptionInfo);
		}
		
		MessageDialog.openError(Display.getCurrent().getActiveShell(),"错误","系统错误");
	}
	/**
	 * Exception handle
	 * 
	 * @param shell
	 * @param e
	 */
	public static void doException(Shell shell, Throwable e) {
		doException(shell, e, (Class)null);
	}
	
	public static void doException(Shell shell, Throwable e, Class exceptionSourceClass){
		doException(shell, "错误", e, exceptionSourceClass);
	}

	/**
	 * Exception handle
	 * @param shell
	 * @param title
	 * @param e
	 */
	public static void doException(Shell shell, String title, Throwable e, Class exceptionSource) {
		if (e == null) {
			return;
		}
		 
		Dialog.openErrorDialog(shell, title, "系统错误", e, exceptionSource);
		
			
	}
	
	public static boolean isExceptionStatckHasCause(Throwable e, Class causeType){
		Throwable cause = e;
		if (e == null || causeType == null)
			return false;
		while (cause != null){
			if (cause.getClass() == causeType)
				return true;
			cause = cause.getCause();
		}
		return false;
	}
	
	public static Throwable getStackCause(Throwable e, Class requireType){
		Throwable cause = e;
		if (e == null || requireType == null)
			return null;
		while (cause != null){
			if (cause.getClass() == requireType)
				return cause;
			cause = cause.getCause();
		}
		return null;
	}

	public static String getExceptionStatckTrace(Throwable e) {
		if (e == null)
			return "";
		StringWriter sw = new StringWriter();
		PrintWriter pw = new PrintWriter(sw);
		e.printStackTrace(pw);
		return sw.toString();
	}    

}