是 SOFAStack 中间件依赖的一个通用工具包，通过自动感知应用的日志实现

/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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.alipay.sofa.common.utils; import java.lang.reflect.Array; import java.util.ArrayList; import java.util.Arrays; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Map.Entry; /** * * @author luoguimu123 * @version $Id: ArrayUtil.java, v 0.1 2017年08月01日 下午12:02 luoguimu123 Exp $ */ public class ArrayUtil { public static final Object[] EMPTY_OBJECT_ARRAY = new Object[0]; public static final Class[] EMPTY_CLASS_ARRAY = new Class[0]; public static final String[] EMPTY_STRING_ARRAY = new String[0]; public static final long[] EMPTY_LONG_ARRAY = new long[0]; public static final Long[] EMPTY_LONG_OBJECT_ARRAY = new Long[0]; public static final int[] EMPTY_INT_ARRAY = new int[0]; public static final Integer[] EMPTY_INTEGER_OBJECT_ARRAY = new Integer[0]; public static final short[] EMPTY_SHORT_ARRAY = new short[0]; public static final Short[] EMPTY_SHORT_OBJECT_ARRAY = new Short[0]; public static final byte[] EMPTY_BYTE_ARRAY = new byte[0]; public static final Byte[] EMPTY_BYTE_OBJECT_ARRAY = new Byte[0]; public static final double[] EMPTY_DOUBLE_ARRAY = new double[0]; public static final Double[] EMPTY_DOUBLE_OBJECT_ARRAY = new Double[0]; public static final float[] EMPTY_FLOAT_ARRAY = new float[0]; public static final Float[] EMPTY_FLOAT_OBJECT_ARRAY = new Float[0]; public static final boolean[] EMPTY_BOOLEAN_ARRAY = new boolean[0]; public static final Boolean[] EMPTY_BOOLEAN_OBJECT_ARRAY = new Boolean[0]; public static final char[] EMPTY_CHAR_ARRAY = new char[0]; public static final Character[] EMPTY_CHARACTER_OBJECT_ARRAY = new Character[0]; public ArrayUtil() { } public static boolean isEmpty(Object[] array) { return array == null || array.length == 0; } public static boolean isEmpty(long[] array) { return array == null || array.length == 0; } public static boolean isEmpty(int[] array) { return array == null || array.length == 0; } public static boolean isEmpty(short[] array) { return array == null || array.length == 0; } public static boolean isEmpty(byte[] array) { return array == null || array.length == 0; } public static boolean isEmpty(double[] array) { return array == null || array.length == 0; } public static boolean isEmpty(float[] array) { return array == null || array.length == 0; } public static boolean isEmpty(boolean[] array) { return array == null || array.length == 0; } public static boolean isEmpty(char[] array) { return array == null || array.length == 0; } public static boolean isNotEmpty(Object[] array) { return array != null && array.length > 0; } public static boolean isNotEmpty(long[] array) { return array != null && array.length > 0; } public static boolean isNotEmpty(int[] array) { return array != null && array.length > 0; } public static boolean isNotEmpty(short[] array) { return array != null && array.length > 0; } public static boolean isNotEmpty(byte[] array) { return array != null && array.length > 0; } public static boolean isNotEmpty(double[] array) { return array != null && array.length > 0; } public static boolean isNotEmpty(float[] array) { return array != null && array.length > 0; } public static boolean isNotEmpty(boolean[] array) { return array != null && array.length > 0; } public static boolean isNotEmpty(char[] array) { return array != null && array.length > 0; } public static Object[] defaultIfNull(Object[] array) { return array == null ? EMPTY_OBJECT_ARRAY : array; } public static long[] defaultIfNull(long[] array) { return array == null ? EMPTY_LONG_ARRAY : array; } public static int[] defaultIfNull(int[] array) { return array == null ? EMPTY_INT_ARRAY : array; } public static short[] defaultIfNull(short[] array) { return array == null ? EMPTY_SHORT_ARRAY : array; } public static byte[] defaultIfNull(byte[] array) { return array == null ? EMPTY_BYTE_ARRAY : array; } public static double[] defaultIfNull(double[] array) { return array == null ? EMPTY_DOUBLE_ARRAY : array; } public static float[] defaultIfNull(float[] array) { return array == null ? EMPTY_FLOAT_ARRAY : array; } public static boolean[] defaultIfNull(boolean[] array) { return array == null ? EMPTY_BOOLEAN_ARRAY : array; } public static char[] defaultIfNull(char[] array) { return array == null ? EMPTY_CHAR_ARRAY : array; } public static Object[] defaultIfNull(Object[] array, Object[] defaultArray) { return array == null ? defaultArray : array; } public static long[] defaultIfNull(long[] array, long[] defaultArray) { return array == null ? defaultArray : array; } public static int[] defaultIfNull(int[] array, int[] defaultArray) { return array == null ? defaultArray : array; } public static short[] defaultIfNull(short[] array, short[] defaultArray) { return array == null ? defaultArray : array; } public static byte[] defaultIfNull(byte[] array, byte[] defaultArray) { return array == null ? defaultArray : array; } public static double[] defaultIfNull(double[] array, double[] defaultArray) { return array == null ? defaultArray : array; } public static float[] defaultIfNull(float[] array, float[] defaultArray) { return array == null ? defaultArray : array; } public static boolean[] defaultIfNull(boolean[] array, boolean[] defaultArray) { return array == null ? defaultArray : array; } public static char[] defaultIfNull(char[] array, char[] defaultArray) { return array == null ? defaultArray : array; } public static Object[] defaultIfNull(Object[] array, Class defaultComponentType) { return array == null ? (Object[]) ((Object[]) Array.newInstance( ClassUtil.getNonPrimitiveType(defaultComponentType), 0)) : array; } public static Object[] defaultIfEmpty(Object[] array) { return array == null ? EMPTY_OBJECT_ARRAY : array; } public static long[] defaultIfEmpty(long[] array) { return array == null ? EMPTY_LONG_ARRAY : array; } public static int[] defaultIfEmpty(int[] array) { return array == null ? EMPTY_INT_ARRAY : array; } public static short[] defaultIfEmpty(short[] array) { return array == null ? EMPTY_SHORT_ARRAY : array; } public static byte[] defaultIfEmpty(byte[] array) { return array == null ? EMPTY_BYTE_ARRAY : array; } public static double[] defaultIfEmpty(double[] array) { return arr