logutils.java

google的gdata api包

/* Copyright (c) 2006 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


package com.google.gdata.util;

import java.util.logging.Level;
import java.util.logging.Logger;


/**
 * Utility functions for logging.
 *
 * 
 */
public final class LogUtils {


  public static void logException(Logger logger,
                                  Level level,
                                  String prefix,
                                  Throwable e) {

    StackTraceElement[] trace = e.getStackTrace();
    StringBuilder logMessage = new StringBuilder();

    if (prefix != null) {
      logMessage.append(prefix);
      logMessage.append('\n');
    }

    logMessage.append(e.toString());
    logMessage.append("\nMessage: ");
    logMessage.append(e.getMessage());
    logMessage.append('\n');

    for (int i = 0; i < trace.length; i++) {
      logMessage.append("\n\tat ");
      logMessage.append(trace[i]);
    }

    logger.log(level, logMessage.toString());
  }
}