tv_question.rar_问卷调查

package com.wasu.as.sys; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.text.DecimalFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Arrays; import java.util.Calendar; import java.util.Collection; import java.util.Date; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Random; import java.util.Set; import java.util.StringTokenizer; import java.util.Vector; import java.util.zip.GZIPInputStream; import java.util.zip.GZIPOutputStream; public class StringUtil { public static final String XML_TAG_AND = "\7"; public static final String replace( String line, String oldString, String newString ) { if (line == null) { return null; } int i=0; if ( ( i=line.indexOf( oldString, i ) ) >= 0 ) { char [] line2 = line.toCharArray(); char [] newString2 = newString.toCharArray(); int oLength = oldString.length(); StringBuffer buf = new StringBuffer(line2.length); buf.append(line2, 0, i).append(newString2); i += oLength; int j = i; while( ( i=line.indexOf( oldString, i ) ) > 0 ) { buf.append(line2,j,i-j).append(newString2); i += oLength; j = i; } buf.append(line2, j, line2.length - j); return buf.toString(); } return line; } public static final boolean isEmptyString(String s){ if(s==null) return true; if("".equals(s.trim())) return true; return false; } public static final String convertNumberToString(Number value) { DecimalFormat formatter = new DecimalFormat(); formatter.setGroupingUsed(false); String result = formatter.format(value.doubleValue()); return result; } /** * ��Stringѹ�� * example:com.jbbis.aic.alteration.entity.AlterRequisition �� * integrateOpinion,getIntegrateOpinionInBytes(),setIntegrateOpinionInBytes */ public static byte[] zipString(String s){ if(s==null) return null; try { byte[] bytes = s.getBytes("GBK"); BufferedInputStream in = new BufferedInputStream(new ByteArrayInputStream(bytes)); ByteArrayOutputStream baos = new ByteArrayOutputStream(); BufferedOutputStream out = new BufferedOutputStream(new GZIPOutputStream(baos)); byte[] buffer = new byte[1024]; int len = 0; while( (len=in.read(buffer)) != -1){ out.write(buffer,0,len); } in.close(); out.close(); return baos.toByteArray(); } catch (Exception e) { e.printStackTrace(); return null; } } /** * ��ѹString */ public static String unzipString(byte[] bytes){ if(bytes==null||bytes.length==0) return null; try { BufferedInputStream in = new BufferedInputStream(new GZIPInputStream(new ByteArrayInputStream(bytes))); ByteArrayOutputStream baos = new ByteArrayOutputStream(); BufferedOutputStream out = new BufferedOutputStream(baos); byte[] buffer = new byte[1024]; int len = 0; while( (len=in.read(buffer)) != -1){ out.write(buffer,0,len); } in.close(); out.close(); bytes = baos.toByteArray(); return new String(bytes,"GBK"); } catch (Exception e) { e.printStackTrace(); return null; } } public static String stringToHtmlFormat(String s){ if(s==null) return null; String temp = replace(s,"\n","<br>"); temp = replace(temp,"\t","&nbsp;&nbsp;&nbsp;&nbsp;"); return replace(temp," ","&nbsp;"); } /** * ���ַ���п��滻�����������ǿ��ַ�����ԭ�ַ�����ǿ�(null)�����ؿ��ַ�("") * @param s * @return * @author shenyf */ public static String toStringNullReplaced(String s){ return s==null?"":s; } /** * ��l�����ַ�ת���������п��滻�����������ǿ�l�������ַ��ʾ��lֵ������ǿ�(null)�����ؿ��ַ�("") * @param l * @return * @author shenyf */ public static String toStringNullReplaced(Long l){ return l==null?"":l.toString(); } /** * ��i�����ַ�ת���������п��滻�����������ǿ�i�������ַ��ʾ��iֵ������ǿ�(null)�����ؿ��ַ�("") * @param i * @return * @author shenyf */ public static String toStringNullReplaced(Integer i){ return i==null?"":i.toString(); } public static String[] split(String origin, String limit) { List container = new ArrayList(); String org = new String(origin); while (org.indexOf(limit) >= 0) { String str = org.substring(0, org.indexOf(limit)); if(str.length() >=0) { container.add(str); } org = org.substring(org.indexOf(limit) + limit.length()); } if(org.length() > 0) { container.add(org); } String[] result = new String[container.size()]; container.toArray(result); return result; } /** * ���ַ������ݹ���ƴ���ַ���{"abc","def","ghi"}ת����'abc','def','ghi'ֻ�����toString(arr,"'",",") * @param _arr �ַ� * @param _wrapper �ַ�}�ߵİ���ַ� * @param _separator �ָ�� * @return �������Ϊ�ջ򳤶�Ϊ0������null */ public static String toString(String[] _arr,String _wrapper,String _separator){ if(_arr==null || _arr.length<=0){ return null; } return toString(_arr, 0, _arr.length, _wrapper, _separator); } /** * ���ַ������ݹ���ƴ���ַ���{"abc","def","ghi"}ת����'abc','def','ghi'ֻ�����toString(arr,0,3,"'",",") * @param _arr �ַ� * @param _fromIndex ��һ��Ԫ��(��)���±� * @param _toIndex ���һ��Ԫ��(����)���±ꡣ�� _toIndex > _arr.length�����൱�� _toIndex = _arr.length * @param _wrapper �ַ�}�ߵİ���ַ� * @param _separator �ָ�� * @return �������Ϊ�ջ򳤶�Ϊ0������null */ public static String toString(String[] _arr, int _fromIndex, int _toIndex, String _wrapper,String _separator){ if(_arr==null || _arr.length<=0){ return null; } StringBuffer strBuff = new StringBuffer(); for(int i = _fromIndex;i < _arr.length && i < _toIndex;i++){ strBuff.append(_wrapper+_arr[i]+_wrapper+_separator); } if (strBuff.length() > 0) { strBuff.deleteCharAt(strBuff.length() - 1); } return strBuff.toString(); } /** * ��_arr�в���ƥ����ַ� * @param _tobeFound ƥ���ַ� * @param _arr * @return ����ҵ�������true�����򷵻�false */ public static boolean findIn(String _tobeFound,String[] _arr){ if(_arr==null || _arr.length<=0){ return false; } for(int i=0;i<_arr.length;i++){ if(_arr[i].equals(_tobeFound)){ return true; } } return false; } /** * ��һ��Setת�������顣Set�е�Ԫ��ΪString�� * @param _set * @return */ public static String[] toArray(Set _set){ if(_set==null || _set.size()<=0){ return null; } String[] arr=new String[_set.size()]; int i=0; for(Iterator itr=_set.iterator();itr.hasNext();){ arr[i++]=(String)itr.next(); } return arr; } /** * ȥ���ַ��еİ�ǻ�ȫ�ǿո� * @param s ��Ҫ������ַ� * @return �������ַ� */ public static String trim(String s) { if (s == null || s.length() == 0) { return s; }