baseexception.java

struts+spring+hibernate自创框架

package com.pegasus.framework.exception;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.pegasus.framework.util.ExceptionUtil;


public class BaseException extends Exception {
    private Log log = LogFactory.getLog(BaseException.class);
	private Throwable cause = null;

	/**
	 * Constructor.
	 * @param msg   error message.
	 */
	public BaseException(String msg) {
		super(msg);
        log.fatal(msg);
	}

	/**
	 * Constructor.
	 * @param cause the nested exception (caused by).
	 */
	public BaseException(Throwable cause) {
		super();
		this.cause = cause;
        log.fatal("  <---- Caused by: " + cause.toString() + " ---->", cause);

	}

	/**
	 * Constructor.
	 * @param msg   error message.
	 * @param cause the nested exception (caused by).
	 */
	public BaseException(String msg, Throwable cause) {
		super(msg);
		this.cause = cause;
        log.fatal(msg + "  <---- Caused by: " + cause.toString() + " ---->", cause);
	}

	/**
	 * Gets the causing exception, if any.
	 */
	public Throwable getCausedByException() {
		return cause;
	}

	public String toString() {
		if (cause == null) {
			return super.toString();
		} else {
			return super.toString() + "  <---- Caused by: " + cause.toString() + " ---->";
		}
	}

    public void printStackTrace() {
		if (cause != null) {
			log.error(ExceptionUtil.formatTrace(cause));
		}
	}

	public void printStackTrace(java.io.PrintStream ps) {
		super.printStackTrace(ps);
		if (cause != null) {
			ps.println("<---- Caused by:");
			cause.printStackTrace(ps);
			ps.println("---->");
		}
	}

	public void printStackTrace(java.io.PrintWriter pw) {
		super.printStackTrace(pw);
		if (cause != null) {
			pw.println("<---- Caused by:");
			cause.printStackTrace(pw);
			pw.println("---->");
		}
	}
}