/**
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* Copyright (c) 2015-2016, Chill Zhuang 庄骞 (smallchill@163.com).
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* <p>
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* <p>
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* http://www.apache.org/licenses/LICENSE-2.0
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* <p>
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.dsh.other.util;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.io.StringWriter;
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import java.lang.reflect.Array;
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import java.math.BigDecimal;
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import java.net.URISyntaxException;
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import java.util.*;
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import java.util.Map.Entry;
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/**
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* 高频方法集合类
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*/
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public class ToolUtil {
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/**
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* 获取随机位数的字符串
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*
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* @author fengshuonan
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* @Date 2017/8/24 14:09
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*/
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public static String getRandomString(int length) {
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String base = "abcdefghijklmnopqrstuvwxyz0123456789";
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Random random = new Random();
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StringBuffer sb = new StringBuffer();
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for (int i = 0; i < length; i++) {
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int number = random.nextInt(base.length());
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sb.append(base.charAt(number));
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}
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return sb.toString();
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}
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/**
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* 判断一个对象是否是时间类型
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*
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* @author stylefeng
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* @Date 2017/4/18 12:55
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*/
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public static String dateType(Object o) {
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if (o instanceof Date) {
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return DateUtil.getDay((Date) o);
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} else {
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return o.toString();
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}
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}
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/**
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* 获取异常的具体信息
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*
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* @author fengshuonan
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* @Date 2017/3/30 9:21
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* @version 2.0
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*/
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public static String getExceptionMsg(Exception e) {
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StringWriter sw = new StringWriter();
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try {
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e.printStackTrace(new PrintWriter(sw));
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} finally {
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try {
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sw.close();
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} catch (IOException e1) {
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e1.printStackTrace();
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}
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}
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return sw.getBuffer().toString().replaceAll("\\$", "T");
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}
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/**
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* 比较两个对象是否相等。<br>
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* 相同的条件有两个，满足其一即可：<br>
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* 1. obj1 == null && obj2 == null; 2. obj1.equals(obj2)
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*
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* @param obj1 对象1
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* @param obj2 对象2
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* @return 是否相等
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*/
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public static boolean equals(Object obj1, Object obj2) {
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return (obj1 != null) ? (obj1.equals(obj2)) : (obj2 == null);
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}
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/**
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* 计算对象长度，如果是字符串调用其length函数，集合类调用其size函数，数组调用其length属性，其他可遍历对象遍历计算长度
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*
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* @param obj 被计算长度的对象
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* @return 长度
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*/
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public static int length(Object obj) {
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if (obj == null) {
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return 0;
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}
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if (obj instanceof CharSequence) {
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return ((CharSequence) obj).length();
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}
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if (obj instanceof Collection) {
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return ((Collection<?>) obj).size();
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}
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if (obj instanceof Map) {
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return ((Map<?, ?>) obj).size();
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}
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int count;
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if (obj instanceof Iterator) {
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Iterator<?> iter = (Iterator<?>) obj;
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count = 0;
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while (iter.hasNext()) {
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count++;
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iter.next();
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}
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return count;
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}
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if (obj instanceof Enumeration) {
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Enumeration<?> enumeration = (Enumeration<?>) obj;
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count = 0;
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while (enumeration.hasMoreElements()) {
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count++;
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enumeration.nextElement();
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}
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return count;
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}
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if (obj.getClass().isArray() == true) {
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return Array.getLength(obj);
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}
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return -1;
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}
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/**
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* 对象中是否包含元素
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*
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* @param obj 对象
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* @param element 元素
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* @return 是否包含
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*/
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public static boolean contains(Object obj, Object element) {
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if (obj == null) {
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return false;
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}
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if (obj instanceof String) {
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if (element == null) {
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return false;
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}
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return ((String) obj).contains(element.toString());
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}
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if (obj instanceof Collection) {
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return ((Collection<?>) obj).contains(element);
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}
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if (obj instanceof Map) {
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return ((Map<?, ?>) obj).values().contains(element);
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}
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if (obj instanceof Iterator) {
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Iterator<?> iter = (Iterator<?>) obj;
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while (iter.hasNext()) {
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Object o = iter.next();
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if (equals(o, element)) {
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return true;
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}
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}
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return false;
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}
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if (obj instanceof Enumeration) {
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Enumeration<?> enumeration = (Enumeration<?>) obj;
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while (enumeration.hasMoreElements()) {
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Object o = enumeration.nextElement();
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if (equals(o, element)) {
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return true;
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}
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}
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return false;
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}
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if (obj.getClass().isArray() == true) {
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int len = Array.getLength(obj);
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for (int i = 0; i < len; i++) {
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Object o = Array.get(obj, i);
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if (equals(o, element)) {
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return true;
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}
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}
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}
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return false;
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}
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/**
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* 对象是否不为空(新增)
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*
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* @param o String,List,Map,Object[],int[],long[]
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* @return
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*/
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public static boolean isNotEmpty(Object o) {
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return !isEmpty(o);
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}
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/**
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* 对象是否为空
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*
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* @param o String,List,Map,Object[],int[],long[]
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* @return
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*/
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@SuppressWarnings("rawtypes")
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public static boolean isEmpty(Object o) {
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if (o == null) {
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return true;
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}
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if (o instanceof String) {
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if (o.toString().trim().equals("")) {
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return true;
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}
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} else if (o instanceof List) {
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if (((List) o).size() == 0) {
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return true;
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}
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} else if (o instanceof Map) {
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if (((Map) o).size() == 0) {
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return true;
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}
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} else if (o instanceof Set) {
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if (((Set) o).size() == 0) {
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return true;
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}
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} else if (o instanceof Object[]) {
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if (((Object[]) o).length == 0) {
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return true;
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}
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} else if (o instanceof int[]) {
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if (((int[]) o).length == 0) {
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return true;
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}
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} else if (o instanceof long[]) {
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if (((long[]) o).length == 0) {
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return true;
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}
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}
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return false;
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}
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/**
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* 对象组中是否存在 Empty Object
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*
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* @param os 对象组
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* @return
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*/
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public static boolean isOneEmpty(Object... os) {
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for (Object o : os) {
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if (isEmpty(o)) {
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return true;
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}
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}
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return false;
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}
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/**
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* 对象组中是否全是 Empty Object
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*
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* @param os
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* @return
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*/
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public static boolean isAllEmpty(Object... os) {
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for (Object o : os) {
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if (!isEmpty(o)) {
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return false;
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}
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}
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return true;
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}
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/**
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* 是否为数字
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*
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* @param obj
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* @return
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*/
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public static boolean isNum(Object obj) {
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try {
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Integer.parseInt(obj.toString());
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} catch (Exception e) {
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return false;
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}
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return true;
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}
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/**
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* 如果为空, 则调用默认值
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*
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* @param str
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* @return
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*/
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public static Object getValue(Object str, Object defaultValue) {
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if (isEmpty(str)) {
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return defaultValue;
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}
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return str;
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}
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/**
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* 强转->string,并去掉多余空格
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*
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* @param str
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* @return
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*/
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public static String toStr(Object str) {
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return toStr(str, "");
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}
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/**
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* 强转->string,并去掉多余空格
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*
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* @param str
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* @param defaultValue
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* @return
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*/
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public static String toStr(Object str, String defaultValue) {
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if (null == str) {
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return defaultValue;
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}
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return str.toString().trim();
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}
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/**
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* 强转->int
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*
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* @param obj
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* @return
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*/
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// public static int toInt(Object value) {
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// return toInt(value, -1);
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// }
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/**
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* 强转->int
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*
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* @param obj
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* @param defaultValue
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* @return
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*/
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// public static int toInt(Object value, int defaultValue) {
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// return Convert.toInt(value, defaultValue);
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// }
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/**
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* 强转->long
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*
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* @param obj
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* @return
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*/
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// public static long toLong(Object value) {
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// return toLong(value, -1);
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// }
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/**
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* 强转->long
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*
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* @param obj
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* @param defaultValue
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* @return
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*/
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// public static long toLong(Object value, long defaultValue) {
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// return Convert.toLong(value, defaultValue);
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// }
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//
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// public static String encodeUrl(String url) {
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// return URLKit.encode(url, CharsetKit.UTF_8);
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// }
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//
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// public static String decodeUrl(String url) {
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// return URLKit.decode(url, CharsetKit.UTF_8);
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// }
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/**
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* map的key转为小写
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*
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* @param map
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* @return Map<String , Object>
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*/
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public static Map<String, Object> caseInsensitiveMap(Map<String, Object> map) {
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Map<String, Object> tempMap = new HashMap<>();
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for (String key : map.keySet()) {
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tempMap.put(key.toLowerCase(), map.get(key));
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}
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return tempMap;
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}
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/**
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* 获取map中第一个数据值
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*
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* @param <K> Key的类型
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* @param <V> Value的类型
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* @param map 数据源
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* @return 返回的值
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*/
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public static <K, V> V getFirstOrNull(Map<K, V> map) {
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V obj = null;
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for (Entry<K, V> entry : map.entrySet()) {
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obj = entry.getValue();
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if (obj != null) {
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break;
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}
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}
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return obj;
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}
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/**
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* 创建StringBuilder对象
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*
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* @return StringBuilder对象
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*/
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public static StringBuilder builder(String... strs) {
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final StringBuilder sb = new StringBuilder();
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for (String str : strs) {
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sb.append(str);
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}
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return sb;
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}
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/**
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* 创建StringBuilder对象
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*
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* @return StringBuilder对象
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*/
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public static void builder(StringBuilder sb, String... strs) {
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for (String str : strs) {
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sb.append(str);
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}
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}
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/**
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* 去掉指定后缀
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*
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* @param str 字符串
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* @param suffix 后缀
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* @return 切掉后的字符串，若后缀不是 suffix， 返回原字符串
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*/
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public static String removeSuffix(String str, String suffix) {
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if (isEmpty(str) || isEmpty(suffix)) {
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return str;
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}
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if (str.endsWith(suffix)) {
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return str.substring(0, str.length() - suffix.length());
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}
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return str;
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}
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/**
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* 当前时间
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*
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* @author stylefeng
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* @Date 2017/5/7 21:56
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*/
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public static String currentTime() {
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return DateUtil.getTime();
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}
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/**
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* 判断是否是windows操作系统
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*
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* @author stylefeng
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* @Date 2017/5/24 22:34
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*/
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public static Boolean isWinOs() {
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String os = System.getProperty("os.name");
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if (os.toLowerCase().startsWith("win")) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* 获取临时目录
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*
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* @author stylefeng
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* @Date 2017/5/24 22:35
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*/
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public static String getTempPath() {
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return System.getProperty("java.io.tmpdir");
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}
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/**
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* 把一个数转化为int
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*
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* @author fengshuonan
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* @Date 2017/11/15 下午11:10
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*/
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public static Integer toInt(Object val) {
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if (val instanceof Double) {
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BigDecimal bigDecimal = new BigDecimal((Double) val);
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return bigDecimal.intValue();
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} else {
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return Integer.valueOf(val.toString());
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}
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}
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/**
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* 获取项目路径
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*/
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public static String getWebRootPath(String filePath) {
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try {
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String path = ToolUtil.class.getClassLoader().getResource("").toURI().getPath();
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path = path.replace("/WEB-INF/classes/", "");
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path = path.replace("/target/classes/", "");
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path = path.replace("file:/", "");
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if (ToolUtil.isEmpty(filePath)) {
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return path;
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} else {
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return path + "/" + filePath;
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}
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} catch (URISyntaxException e) {
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throw new RuntimeException(e);
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}
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}
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/**
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* 获取文件后缀名 不包含点
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*/
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public static String getFileSuffix(String fileWholeName) {
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if (ToolUtil.isEmpty(fileWholeName)) {
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return "none";
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}
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int lastIndexOf = fileWholeName.lastIndexOf(".");
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return fileWholeName.substring(lastIndexOf + 1);
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}
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}
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