stringutil.java

本公司开发项目中本人做的公共类文件。如文件的操作

package com.intohotel.util;

import java.io.IOException;
import java.math.BigDecimal;
import java.text.ParseException;
import java.util.Date;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

public class StringUtil {
	public static boolean isEmpty(String string){
		return (string == null || "".equalsIgnoreCase(string.trim()));
	}
	
	public static String cutFileSuffix(String fileName){
		if(fileName==null || "".equals(fileName.trim()))
			return "";
		int index = fileName.lastIndexOf('.');
		if(index<0)
			return "";
		else{
			return fileName.substring(index+1);
		}
	}
	
	public static String buildAutoFileName(String fileName){
		String suffix = cutFileSuffix(fileName);
		Date date = new Date();
		String newFileName = date.getTime()+"."+suffix;
		return newFileName;
	}
	
	public static String getTodayString(){
		return DateToStr(new Date());
	}
	
	public static String DateToStr(Date date, String format){
		return new java.text.SimpleDateFormat(format).format(date);
	}
	
	public static String DateToStr(Date date){
		return DateToStr(date,"yyyy-MM-dd");
	}
	
	public static String ParameterUnit(String url){
		if(isEmpty(url))
			return "?";
		else
			return url+"&";
	}
	public static String DateToStrOracle(Date date, String format){
		String oracleFormat = format;
		if("yyyy-MM-dd HH:mm:ss".equals(format))
			oracleFormat= "yyyy-mm-dd HH24:MI:SS";
		else if("yyyy-MM-dd HH:mm".equals(format))
			oracleFormat= "yyyy-mm-dd HH24:MI";
		else if("yyyy-MM-dd HH".equals(format))
			oracleFormat= "yyyy-mm-dd HH24";
		return "to_date('"+DateToStr(date,format)+"','"+oracleFormat+"')";
	}
	
	/**
	 * 当天结算开始时间,即当天的00:00
	 * @param date
	 * @return
	 */
	public static String BalanceDateToStrOracle(Date date){
		String balanceStr = DateToStr(date) + " 00:00";
		return "to_date('"+balanceStr+"','yyyy-mm-dd HH24:MI')";
	}
	/**
	 * 结算结束时间,明天的凌晨 00:00
	 * @param date
	 * @return
	 */
	public static String NextBalanceDateToStrOracle(Date date){
		Date nextDate = DateUtils.getNextDayCurrDay(date, 1);
		String balanceStr = DateToStr(nextDate) + " 00:00";
		return "to_date('"+balanceStr+"','yyyy-mm-dd HH24:MI')";
	}
	/**
	 * 结算时间，一般取上一天的 00:00
	 * @param date
	 * @return
	 */
	public static String LastBalanceDateToStrOracle(Date date){
		Date lastDate = DateUtils.getNextDayCurrDay(date, -1);
		String balanceStr = DateToStr(lastDate) + " 00:00";
		return "to_date('"+balanceStr+"','yyyy-mm-dd HH24:MI')";
	}
	/**
	 * 结算时间，一般取当天的 16:00
	 */
	public static String DateToStrOracle(Date date){
		return DateToStrOracle(date,"yyyy-MM-dd");
	}
	public static String DateToStrOracleSecond(Date date){
		return DateToStrOracle(date,"yyyy-MM-dd HH:mm:ss");
	}
	
	public static String StrDateToStrOracle(String date,String format) throws ParseException{
			Date d = new java.text.SimpleDateFormat(format).parse(date);
			return DateToStrOracle(d,"yyyy-MM-dd");		
	}
	public static String MoneyToStr(BigDecimal bigDecimal){
		return new java.text.DecimalFormat("###.00").format(bigDecimal);
	}
	
	public static String NextDateToStrOracle(Date date,String format,int amount){
		Date nextDate = DateUtils.getNextDayCurrDay(date, amount);
		String oracleFormat = format;
		if("yyyy-MM-dd HH:mm:ss".equals(format))
			oracleFormat= "yyyy-mm-dd HH24:MI:SS";
		else if("yyyy-MM-dd HH:mm".equals(format))
			oracleFormat= "yyyy-mm-dd HH24:MI";
		else if("yyyy-MM-dd HH".equals(format))
			oracleFormat= "yyyy-mm-dd HH24";
		return "to_date('"+DateToStr(nextDate,format)+"','"+oracleFormat+"')";
	}
	
	public static String NextDateToStrOracle(Date date,String format){
		return NextDateToStrOracle(date,format,1);
	}
	
	public static String NextDateToStrOracle(Date date){
		return NextDateToStrOracle(date,"yyyy-MM-dd");
	}
	
	public static String NextDateToStrOracle(Date date,int amount){
		return NextDateToStrOracle(date,"yyyy-MM-dd",amount);
	}
	public static String checkLinker(String condition) {
		return isEmpty(condition)?"":"&";
	}
	public static String checkSQLLinker(String condition) {
		return isEmpty(condition)?"":"and";
	}
	public static String convertSQLBlank(String sql,boolean bIn){
        if(bIn)
            return sql.replace(' ','?');
        else
            return sql.replace('?',' ');
    }
    
    /**
     * 去除空格和逗号分号转换
     * @param cont
     * @return
     */
    public static String convertBalnkAndSpliter(String cont){       
        return cont.replaceAll(" ","").replaceAll(",","，").replaceAll(";","；");     
    }
        
    public static String Encript(String param){
        
        if(param==null) return null;
        
        byte[] bytes = param.getBytes();
        
        for(int i=0;i<bytes.length;i++){
            bytes[i] ^= 127 ;
            bytes[i] ^= 90 ;
        }       
        
        BASE64Encoder encoder = new BASE64Encoder();        
        return new String(encoder.encode(bytes));
    }
    
    public static String Decript(String param) throws IOException {
        
        if(param==null) return null;
        
        BASE64Decoder decoder = new BASE64Decoder();
        byte[] bytes = decoder.decodeBuffer(param);
                
        for(int i=0;i<bytes.length;i++){
            bytes[i] ^= 37 ;
            bytes[i] ^= 0 ;
        }
        
        return new String(bytes);
        
    }   
    
    /*
	 * 字符长度处理,过长切除,不足补空格
	 * 传入长度为0什么都不操作
	 */
	public static String StringBatch(String input,int length){
		String ret = input.trim();
		//int len = input.getBytes().length;
		if(null!=ret){
			
			if(0==length){//0直接返回原来字符串
				return ret;
			}
			
			int len = ret.getBytes().length;
			if(len<=length){
				
				for(int j = 0;j<(length-len);j++){
					ret = ret + " ";
				}
			}else{
				
				if(len==ret.length()){
					ret = ret.substring(0,length);
				}else{
					ret = ret.substring(0,length/2);//.toString();//ret.split("",length);
				}
			}
		}else{//空字符串
			ret = "";
			for(int j = 0;j<(length);j++){
				ret = ret + " ";
			}
		}
		return ret;
	}
	/**********组装字符串***********/
	public static String unitString(String[] a,String b)
	{
		String result="";
		if(a!=null && a.length>0)
		{
			for(int i=0;i<a.length;i++)
			{
				result+=a[i]+b;
			}
		}
		return result;
	}
	
	/**
	 * 过滤空字符串或者以及去掉二头多有空格
	 * @param string
	 * @return
	 */
	public static String filterNullString(String string){
		if(isEmpty(string))
			return "";
		return string.trim();
	}
	public static String toString(Object[] array) {
		int len = array.length;
		if ( len == 0 ) return "";
		StringBuffer buf = new StringBuffer( len * 12 );
		for ( int i = 0; i < len - 1; i++ ) {
			buf.append( array[i] ).append(", ");
		}
		return buf.append( array[len - 1] ).toString();
	}
	public static boolean isNotEmpty(String string) {
		return string != null && string.trim().length() > 0;
	}	
	/**
	 * 获取银行卡号的掩码
	 * @param cardNo
	 * 		真实银行卡号
	 * @return
	 */
	public static String getBankShade(String cardNo){
		if(StringUtil.isEmpty(cardNo))
			return "";
		if(cardNo.length()<8)
			return cardNo;
		if(cardNo.length()<8)
			return cardNo;
		String pre = cardNo.substring(0,4);
		String pix = cardNo.substring(cardNo.length()-4);
		String middle = cardNo.substring(4,cardNo.length()-4);
		String shard = "";
		for(int i=0; i<middle.length(); i++){
			shard += "*";
		}
		return pre + shard + pix;
	}
}