StringUtils

package com.zxwa.ntmss.Excel;

import org.apache.commons.lang3.ObjectUtils;
import org.apache.poi.ss.formula.functions.T;
import org.junit.Test;

import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;

/**
 * 字符串判断
 * 
 * @author 
 *
 */
public class StringUtils {


    public static final String EMPTY = "";

    public static String formatNum(Double value) {
        BigDecimal b = new BigDecimal(value);
        String f1 = b.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString();
        return f1;
    }
    /**
     * 判断字符串是否为空
     * 
     * @param str
     * @return
     */
    public static boolean isEmpty(String str) {
        if (null == str || "".equals(parseNull(str.trim())) || str.equals("undefined") || str.equals("null")) {
            return true;
        }
        return false;
    }
    
    
    /**
     * 判断字符串是否为空
     * 
     * @return
     */
    public static boolean isEquals(String str1,String str2) {
        if(isEmpty(str1)){
            if(isEmpty(str2)){
                return true;
            }else {
                return false;    
            }
        }else {
            if(isEmpty(str2)){
                return false;
            }else if(str1.equals(str2)){
                return true;    
            }else {
                return false;
            }
        }
    }
      
      /**
     * 判断字符串是否为空
     * 
     * @param str
     * @return
     */
    public static boolean isEmptyObject(Object str) {
        if (null == str) {
            return true;
        }
        return false;
    }

    /**
     * 判断字符串是否为空
     * 
     * @param str
     * @return
     */
    public static boolean isNotEmpty(String str) {
        if (null == str || "".equals(str.trim()) || "null".equals(str.trim())) {
            return false;
        }
        return true;
    }

        
    /**
     * 
     * @Title: parseNull @Description: 爬虫的数据错误 当某个数据样式为 " "
     *         ,但又不是空时、调用该方法处理 @param: @param str @param: @return @return:
     *         String @throws
     */
    public static String parseNull(String str) {
        if (str == null || str.equals(" ") || str.equals("")) {
            str = "";
        }
        return str;
    }

    public static String null2Blank(Object obj) {
        if (obj == null || obj.toString().equals(" ") || obj.toString().equals("")) {
            return "";
        }
        return obj.toString();
    }

    public static String null2Zero(Object obj) {
        if (obj == null || obj.toString().equals(" ") || obj.toString().equals("")) {
            return "0";
        }
        return obj.toString();
    }
      
       /**
     * 
     * @Title: parseNull @Description: 对url后面的参数进行截取的 @param: @param
     *         str @param: @return @return: String @throws
     */
    public static String cleanUrl(String url) {
        if (StringUtils.isEmpty(url)) {
            return "";
        }
        if (url.contains("?")) {
            url = url.substring(0, url.indexOf("?"));
        }
        if (url.endsWith("/")) {
            url = url.substring(0, url.length() - 1);
        }
        return url;
    }

    /**
     * 获取32位ID
     * 
     * @return
     */
    public static String get32Uuid() {
        return UUID.randomUUID().toString().replaceAll("-", "");
    }
    
       /**
     * 判断多参是否都是空*/
    public static boolean isEmpty(String... fileNames) {
        for (String str : fileNames) {
            if (str != null && !"".equals(str.trim())) {
                return false;
            }

        }
        return true;
    }


    public static boolean isNotEmpty(String... fileNames) {
        for (String str : fileNames) {
            if (str == null || "".equals(str.trim())) {
                return false;
            }

        }
        return true;
    }

       public static String obj2String(Object obj) {
        return obj == null || "null".equals(obj) ? "" : obj.toString();
    }

    public static Integer string2Integer(String val) {
        if(StringUtils.isEmpty(val)){
            return 0;
        }
        return Integer.parseInt(val);
    }

    

    public static String replaceBlank(String str) {
        String dest = "";
        if (str != null) {
            Pattern p = Pattern.compile("\s*|	|
|
");
            Matcher m = p.matcher(str);
            dest = m.replaceAll("");
        }
        return dest;
    }

    /**
     * 方法名:stringFilter 描述: 过滤特殊字符 参数：<br>
     * */
    public static String stringFilter(String str) throws PatternSyntaxException {
        String regEx = "[`~!$%^&*()+=|{}':;',\[\]<>/?~！##￥%……&*（）——+|{}【】‘；：”“’。，、？\\]";
        Pattern p = Pattern.compile(regEx);
        Matcher m = p.matcher(str);
        return m.replaceAll("").trim();
    }

        /**
     * 
     * 方法名:toUpperCaseFirstOne<br>
     * 描述:首字母转大写<br>*/
    public static String toUpperCaseFirstOne(String s) {
        if (isEmpty(s)) {
            return s;
        }
        if (Character.isUpperCase(s.charAt(0))) {
            return s;
        } else {
            return (new StringBuilder()).append(Character.toUpperCase(s.charAt(0))).append(s.subSequence(1, s.length()))
                    .toString();
        }
    }
}