dutilbean.java

试卷分析系统 基于struts的试卷分析系统！ 对初学框架的人很有好处哦！

/*
 * Name: DUtilBean.java
 * Version: 1.0
 * Copyright(c) HitachiInformation Systems,Ltd.2005 All right reserved.
 * Created: 2006/3/21
 * Author: jackie
 * Updated:
 */
package com.hbnu.common;

import java.text.DecimalFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;

/**
 *  关于bean的描述
 * 
 * @author	王雄
 * 
 */
public class DUtilBean {
	
	public static String sqlEscape(String str) {
		
		if (str == null) {
			str = "";
		}
		
		
		if (str.indexOf("'") >= 0) {
			str = str.replaceAll("'", "''");
		}
	
		if (str.indexOf("\\") >= 0) {
			str = str.replaceAll("\\\\", "\\\\\\\\");
		}
		
	
		if (str.indexOf("%") >= 0) {
			str = str.replaceAll("%", "%%");
		}
		
	
		str = " '" + str + "' ";
		
		return str;
	}
	
	
	public static String formatDate6(String date6) {
		try {
			if (date6.length() != 6) {
				return "";
			}
			int intDate = Integer.parseInt(date6);
			String formatDate = 
				date6.substring(0,4) + "/" + date6.substring(4,6);
			return formatDate;
		}catch(Exception e){
			return "";
		}
	}
	
	public static String formatDate8(String date8) {
		try {
			if (date8.length() != 8) {
				return "";
			}
			int intDate = Integer.parseInt(date8);
			String formatDate = 
				date8.substring(0,4) + "/" + date8.substring(4,6) + "/" + date8.substring(6,8);
			return formatDate;
		}catch(Exception e){
			return "";
		}
	}
	
	
	public static String formatDate7(String date7) {
		try {
			if (date7.length() != 7) {
				return "";
			}
			String formatDate = 
				date7.substring(0,4) + date7.substring(5,7);
			return formatDate;
		}catch(Exception e){
			return "";
		}
	}	
	
	public static String formatDate10(String date10) {
		try {
			if (date10.length() != 10) {
				return "";
			}
			String formatDate = 
				date10.substring(0,4) + date10.substring(5,7) + date10.substring(8,10);
			return formatDate;
		}catch(Exception e){
			return "";
		}
	}	
	
    public static String getSystemDate() {
        GregorianCalendar calendar = new GregorianCalendar();
        String year = String.valueOf(calendar.get(Calendar.YEAR));
        String month = String.valueOf(calendar.get(Calendar.MONTH) + 1);
        if (month.length() == 1) {
        	month = "0" + month;
        }
        String day = String.valueOf(calendar.get(Calendar.DAY_OF_MONTH));
        if (day.length() == 1) {
        	day = "0" + day;
        }
        String systemDate = year + "/" + month + "/" + day;
        return systemDate;
    }
    
	
	public static String addComma(String strNum) throws Exception {
		String strValue = null;

		if (strNum == null || strNum.equals("")) {
			return strNum;
		}

			strValue = strNum.replaceAll(",", "");

		strValue = strValue.replace('.', ',');
		String strList[] = strValue.split(",");

	
		try {
			DecimalFormat dmfFormat = new DecimalFormat("###,###,###,###,###");
			if (strList[0].equals("")) {
				strList[0] = "0";
			}
			strValue = dmfFormat.format(Long.parseLong(strList[0]));
			//if (strList.length == 2) {
			//	strValue = strValue + "." + strList[1];
			//}
		} catch (Exception ex) {
			throw new Exception(ex);
		}
		return strValue;
	}
	public static String removePercent(String strNum) throws Exception {
		if (strNum == null || "".equals(strNum)) {
			return strNum;
		}
		
		int sizeNum = strNum.length();
		if (strNum.charAt(sizeNum-1) == '%') {
			String strReturn = "0.";
			for(int j=0; j<sizeNum-1; j++) {
			    strReturn = strReturn + strNum.charAt(j);
			}
			strNum = strReturn;
		}
		return strNum;
	}
	
	public static String removeComma(String strNum) throws Exception {
		String strValue = null;
		
		
		if (strNum == null || strNum.equals("")) {
			return strNum;
		}
		
		
//		try {
			strValue = strNum.replaceAll(",", "");
//			Double dblValue = Double.valueOf(strValue);
//		} catch (Exception ex) {
//			throw new Exception(ex);
//		}
		return strValue;
	}	
	
	public static String removeMh(String strNum) throws Exception {
		String strValue = null;
		
		if (strNum == null || "".equals(strNum)) {
			return strNum;
		}
		
		strValue = strNum.replaceAll(":", "");

		return strValue;
	}
	
	public static String addMh(String strNum) throws Exception {
		String strValue = null;
		
		
		if ("".equals(strNum) || strNum == null) {
			strValue = "";
		}else if(strNum.length()==5){
			return strNum;
		}else{
			strValue = strNum.substring(0,2)+":"+strNum.substring(2,4);
		}
		
		return strValue;
	}
	
	
	public static boolean isHalfDecimal(String str) {
	  if (str.equals("-")) {
		  return false;
	  }

	  int cnt = 0;
	  
	  if (str.length() != str.getBytes().length) {
		return false;
	  }
	  
	  for (int i = 0; i < str.length(); i++) {
		  char ch = str.charAt(i);
		  if (!Character.isDigit(ch) && (i != 0 || ch != '-') 
			  && (i <= 0 || i >= str.length() - 1 || ch != '.') 
			  || Character.UnicodeBlock.of(ch) != Character.UnicodeBlock.BASIC_LATIN) {
				  return false;
			  }
		  if (ch == '.') {
			  cnt++;
		  }
	  }

	  return cnt <= 1;
	}
	
	public static boolean checkHankakuSyuji(String s) {
		String standandString = "0123456789";
		if (s == null) {
			return true;
		}
		for (int i = 0; i < s.length(); i++) {
			if (standandString.indexOf(s.charAt(i)) == -1) {
				return false;
			}
		}
		return true;
	}
	
	
	public static boolean checkYMD(String date) {
		
		if(date==null || "".equals(date)){
			return true;
		}
		if((date != null && date.length()!=8)||((!"".equals(date) && date.length() != 8))){
			return false;
		}
		
		try{
			int year = new Integer(date.substring(0,4)).intValue();
			int month = new Integer(date.substring(4,6)).intValue();
			int day = new Integer(date.substring(6,8)).intValue();
			Calendar cal = Calendar.getInstance();
			 cal.setLenient( false ); 
			 cal.set(year, month-1, day);
			 cal.getTime();
		}catch(Exception e){
			return false;
		}
		return true;
	}
	
	public static boolean checkCode(String s) {
		String standandString = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
		if (s == null) {
			return true;
		}
		for (int i = 0; i < s.length(); i++) {
			if (standandString.indexOf(s.charAt(i)) == -1) {
				return false;
			}
		}
		return true;
	}
	
	
	public static String length(String strTarget, int length){
		StringBuffer strbf = null;
	    StringBuffer strbfResult = new StringBuffer();
	    try {
	    	int lengthFn = length - 1;
		    for (int i=0; i<length; i++) {
		    	strbf = new StringBuffer();
		    	strbf.append(strTarget.charAt(i));
		    	byte[] bytes = strbf.toString().getBytes();
		    	if(bytes.length == 2) {
		    		lengthFn = lengthFn - 1;
		    	}
		    	if (i > lengthFn) {
		    		return strbfResult.toString();
		    	}
		    	strbfResult.append(strbf);
		    }
		    return strbfResult.toString();	
	    } catch (Exception e) {
	    	return strTarget;
	    }
	}
}