基于JavaWeb的校园二手交易平台的设计与实现

-4-附录关键代码展示：packagecom.util;importjava.util.*;importjava.text.*;importjava.util.Calendar;publicclassVeDate{ publicstaticDategetNowDate(){ DatecurrentTime=newDate(); SimpleDateFormatformatter=newSimpleDateFormat("yyyy-MM-ddHH:mm:ss"); StringdateString=formatter.format(currentTime); ParsePositionpos=newParsePosition(8); DatecurrentTime_2=formatter.parse(dateString,pos); returncurrentTime_2; } publicstaticDategetNowDateShort(){ DatecurrentTime=newDate(); SimpleDateFormatformatter=newSimpleDateFormat("yyyy-MM-dd"); StringdateString=formatter.format(currentTime); ParsePositionpos=newParsePosition(8); DatecurrentTime_2=formatter.parse(dateString,pos); returncurrentTime_2; } publicstaticStringgetStringDate(){ DatecurrentTime=newDate(); SimpleDateFormatformatter=newSimpleDateFormat("yyyy-MM-ddHH:mm:ss"); StringdateString=formatter.format(currentTime); returndateString; } publicstaticStringgetStringDatex(){ DatecurrentTime=newDate(); SimpleDateFormatformatter=newSimpleDateFormat("yyyyMMddHHmmss"); StringdateString=formatter.format(currentTime); returndateString; } publicstaticStringgetStringDateShort(){ DatecurrentTime=newDate(); SimpleDateFormatformatter=newSimpleDateFormat("yyyy-MM-dd"); StringdateString=formatter.format(currentTime); returndateString; } publicstaticStringgetStringTimeShort(){ DatecurrentTime=newDate(); SimpleDateFormatformatter=newSimpleDateFormat("HH:mm:ss"); StringdateString=formatter.format(currentTime); returndateString; } publicstaticStringgetYear(){ DatecurrentTime=newDate(); SimpleDateFormatformatter=newSimpleDateFormat("yyyy"); StringdateString=formatter.format(currentTime); returndateString; } publicstaticStringgetTimeShort(){ SimpleDateFormatformatter=newSimpleDateFormat("HH:mm:ss"); DatecurrentTime=newDate(); StringdateString=formatter.format(currentTime); returndateString; } publicstaticDatestrToDateLong(StringstrDate){ SimpleDateFormatformatter=newSimpleDateFormat("yyyy-MM-ddHH:mm:ss"); ParsePositionpos=newParsePosition(0); Datestrtodate=formatter.parse(strDate,pos); returnstrtodate; } publicstaticStringdateToStrLong(java.util.DatedateDate){ SimpleDateFormatformatter=newSimpleDateFormat("yyyy-MM-ddHH:mm:ss"); StringdateString=formatter.format(dateDate); returndateString; } publicstaticStringdateToStr(java.util.DatedateDate){ SimpleDateFormatformatter=newSimpleDateFormat("yyyy-MM-dd"); StringdateString=formatter.format(dateDate); returndateString; } publicstaticDatestrToDate(StringstrDate){ SimpleDateFormatformatter=newSimpleDateFormat("yyyy-MM-dd"); ParsePositionpos=newParsePosition(0); Datestrtodate=formatter.parse(strDate,pos); returnstrtodate; } publicstaticDategetNow(){ DatecurrentTime=newDate(); returncurrentTime; } publicstaticDategetLastDate(longday){ Datedate=newDate(); longdate_3_hm=date.getTime()-3600000*34*day; Datedate_3_hm_date=newDate(date_3_hm); returndate_3_hm_date; } publicstaticStringgetStringToday(){ DatecurrentTime=newDate(); SimpleDateFormatformatter=newSimpleDateFormat("yyyyMMddHHmmss"); StringdateString=formatter.format(currentTime); returndateString; } publicstaticStringgetHour(){ DatecurrentTime=newDate(); SimpleDateFormatformatter=newSimpleDateFormat("yyyy-MM-ddHH:mm:ss"); StringdateString=formatter.format(currentTime); Stringhour; hour=dateString.substring(11,13); returnhour; } publicstaticStringgetTime(){ DatecurrentTime=newDate(); SimpleDateFormatformatter=newSimpleDateFormat("yyyy-MM-ddHH:mm:ss"); StringdateString=formatter.format(currentTime); Stringmin; min=dateString.substring(14,16); returnmin; } publicstaticStringgetUserDate(Stringsformat){ DatecurrentTime=newDate(); SimpleDateFormatformatter=newSimpleDateFormat(sformat); StringdateString=formatter.format(currentTime); returndateString; } publicstaticStringgetTwoHour(Stringst1,Stringst2){ String[]kk=null; String[]jj=null; kk=st1.split(":"); jj=st2.split(":"); if(Integer.parseInt(kk[0])<Integer.parseInt(jj[0])) return"0"; else{ doubley=Double.parseDouble(kk[0])+Double.parseDouble(kk[1]) /60; doubleu=Double.parseDouble(jj[0])+Double.parseDouble(jj[1]) /60; if((y-u)>0) returny-u+""; else return"0"; } } publicstaticStringgetTwoDay(Stringsj1,Stringsj2){ SimpleDateFormatmyFormatter=newSimpleDateFormat("yyyy-MM-dd"); longday=0; try{ java.util.Datedate=myFormatter.parse(sj1); java.util.Datemydate=myFormatter.parse(sj2); day=(date.getTime()-mydate.getTime())/(24*60*60*1000); }catch(Exceptione){ return""; } returnday+""; } publicstaticStringgetPreTime(Stringsj1,Stringjj){ SimpleDateFormatformat=newSimpleDateFormat("yyyy-MM-ddHH:mm:ss"); Stringmydate1=""; try{ Datedate1=format.parse(sj1); longTime=(date1.getTime()/1000)+Integer.parseInt(jj)*60; date1.setTime(Time*1000); mydate1=format.format(date1); }catch(Exceptione){ } returnmydate1; } publicstaticStringgetNextDay(Stringnowdate,Stringdelay){ try{ SimpleDateFormatformat=newSimpleDateFormat("yyyy-MM-dd"); Stringmdate=""; Dated=strToDate(nowdate); longmyTime=(d.getTime()/1000)+Integer.parseInt(delay)*24 *60*60; d.setTime(myTime*1000); mdate=format.format(d); returnmdate; }catch(Exceptione){ return""; } } publicstaticbooleanisLeapYear(Stringddate){ Dated=strToDate(ddate); GregorianCalendargc=(GregorianCalendar)Calendar.getInstance(); gc.setTime(d); intyear=gc.get(Calendar.YEAR); if((year%400)==0) returntrue; elseif((year%4)==0){ if((year%100)==0) returnfalse; else returntrue; }else returnfalse; } publicstaticStringgetEDate(Stringstr){ SimpleDateFormatformatter=newSimpleDateFormat("yyyy-MM-dd"); ParsePositionpos=newParsePosition(0); Datestrtodate=formatter.parse(str,pos); Stringj=strtodate.toString(); String[]k=j.split(""); returnk[2]+k[1].toUpperCase()+k[5].substring(2,4); } publicstaticStringgetEndDateOfMonth(Stringdat){//yyyy-MM-dd Stringstr=dat.substring(0,8); Stringmonth=dat.substring(5,7); intmon=Integer.parseInt(month); if(mon==1||mon==3||mon==5||mon==7||mon==8 ||mon==10||mon==12){ str+="31"; }elseif(mon==4||mon==6||mon==9||mon==11){ str+="30"; }else{ if(isLeapYear(dat)){ str+="29"; }else{ str+="28"; } } returnstr; } publicstaticbooleanisSameWeekDates(Datedate1,Datedate2){ Calendarcal1=Calendar.getInstance(); Calendarcal2=Calendar.getInstance(); cal1.setTime(date1); cal2.setTime(date2); intsubYear=cal1.get(Calendar.YEAR)-cal2.get(Calendar.YEAR); if(0==subYear){ if(cal1.get(Calendar.WEEK_OF_YEAR)==cal2 .get(Calendar.WEEK_OF_YEAR)) returntrue; }elseif(1==subYear&&11==cal2.get(Calendar.MONTH)){ if(cal1.get(Calendar.WEEK_OF_YEAR)==cal2 .get(Calendar.WEEK_OF_YEAR)) returntrue; }elseif(-1==subYear&&11==cal1.get(Calendar.MONTH)){ if(cal1.get(Calendar.WEEK_OF_YEAR)==cal2 .get(Calendar.WEEK_OF_YEAR)) returntrue; } returnfalse; } publicstaticStringgetSeqWeek(){ Calendarc=Calendar.getInstance(Locale.CHINA); Stringweek=Integer.toString(c.get(Calendar.WEEK_OF_YEAR)); if(week.length()==1) week="0"+week; Stringyear=Integer.toString(c.get(Calendar.YEAR)); returnyear+week; } publicstaticStringgetWeek(Stringsdate,Stringnum){ Datedd=VeDate.strToDate(sdate); Calendarc=Calendar.getInstance(); c.setTime(dd); if(num.equals("1")) c.set(Calendar.DAY_OF_WEEK,Calendar.MONDAY); elseif(num.equals("2")) c.set(Calendar.DAY_OF_WEEK,Calendar.TUESDAY); elseif(num.equals("3")) c.set(Calendar.DAY_OF_WEEK,Calendar.WEDNESDAY); elseif(num.equals("4")) c.set(Calendar.DAY_OF_WEEK,Calendar.THURSDAY); elseif(num.equals("5")) c.set(Calendar.DAY_OF_WEEK,Calendar.FRIDAY); elseif(num.equals("6")) c.set(Calendar.DAY_OF_WEEK,Calendar.SATURDAY); elseif(num.equals("0")) c.set(Calendar.DAY_OF_WEEK,Calendar.SUNDAY); returnnewSimpleDateFormat("yyyy-MM-dd").format(c.getTime()); } publicstaticStringgetWeek(Stringsdate){ Datedate=VeDate.strToDate(sdate); Calendarc=Calendar.getInstance(); c.setTime(date); returnnewSimpleDateFormat("EEEE").format(c.getTime()); } publicstaticlonggetDays(Stringdate1,Stringdate2){ if(date1==null||date1.equals("")) return0; if(date2==null||date2.equals("")) return0; SimpleDateFormatmyFormatter=newSimpleDateFormat("yyyy-MM-dd"); java.util.Datedate=null; java.util.Datemydate=null; try{ date=myFormatter.parse(date1); mydate=myFormatter.parse(date2); }catch(Exceptione){ } longday=(date.getTime()-mydate.getTime())/(24*60*60*1000); returnday; } publicstaticStringgetNowMonth(Stringsdate){ sdate=sdate.substring(0,8)+"01"; Datedate=VeDate.strToDate(sdate); Calendarc=Calendar.getInstance(); c.setTime(date); intu=c.get(Calendar.DAY_OF_WEEK); Stringnewday=VeDate.getNextDay(sdate,(1-u)+""); returnnewday; } publicstaticStringgetNo(intk){ returngetUserDate("yyyyMMddhhmmss")+getRandom(k); } publicstaticStringgetRandom(inti){ Randomjjj=newRandom(); if(i==0) return""; Stringjj=""; for(intk=0;k<i;k++){ jj=jj+jjj.nextInt(9); } returnjj; } publicstaticbooleanRightDate(Stringdate){ SimpleDateFormatsdf=newSimpleDateFormat("yyyy-MM-ddhh:mm:ss"); ; if(date==null) returnfalse; if(date.length()>10){ sdf=newSimpleDateFormat("yyyy-MM-ddhh:mm:ss"); }else{ sdf=newSimpleDateFormat("yyyy-MM-dd"); } try{ sdf.parse(date); }catch(ParseExceptionpe){ returnfalse; } returntrue; }packagecom.util;importjavax.servlet.*;importjavax.servlet.http.*;importjava.io.*;importjava.util.HashMap;publicclasstestFilterextendsHttpServletimplementsFilter{ privateFilterConfigfilterConfig; //Handlethepassed-inFilterConfig publicvoidinit(FilterConfigfilterConfig)throwsServletException{ this.filterConfig=filterConfig; } //Processtherequest/responsepair publicvoiddoFilter(ServletRequestrequest,ServletResponseresponse, FilterChainfilterChain){ /*try{ ((HttpServletResponse)response).setHeader("Pragma","No-cache"); ((HttpServletResponse)response).setHeader("Cache-Control","no-cache"); ((HttpServletResponse)response).setHeader("Expires","0"); //request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); request.setCharacterEncoding("UTF-8"); filterChain.doFilter(request,response); }catch(ServletExceptionsx){ filterConfig.getServletContext().log(sx.getMessage()); }catch(IOExceptioniox){ filterConfig.getServletContext().log(iox.getMessage()); }*/ /*HttpServletRequestreq=null; HttpSessionsession=req.getSession(); HashMapuser=(HashMap)session.getAttribute("admin"); System.out.println("bbbbbbbbbbbbbbbbbbb--==="+user.get("uname"));*/ try{ //request.getRequestDispatcher("http://localhost:8080/xsgl").forward(request,response); ((HttpServletResponse)response).sendRedirect("http://localhost:808/tbm/index.jsp"); }catch(Exceptione){ //TODOAuto-generatedcatchblock e.printStackTrace(); } } //Cleanupresources publicvoiddestroy(){ }packagecom.util;importjavax.servlet.*;importjavax.servlet.http.*;importjava.io.*;publicclassSetCharextendsHttpServletimplementsFilter{ privateFilterConfigfilterConfig; //Handlethepassed-inFilterConfig publicvoidinit(FilterConfigfilterConfig)throwsServletException{ this.filterConfig=filterConfig; } //Processtherequest/responsepair publicvoiddoFilter(ServletRequestrequest,ServletResponseresponse, FilterChainfilterChain){ try{ ((HttpServletResponse)response).setHeader("Pragma","No-cache"); ((HttpServletR