检测日期字符串是否为合法(java版)

  1      /**
  2       * 检测日期字符串是否为合法
  3       * @param dateStr
  4       * @param format
  5       * @return
  6       */
  7      public static final boolean checkDateFormat(String dateStr,String format) throws NumberFormatException{
  8             if(dateStr == null || "".equals(dateStr) ) return false;
  9          if(dateStr.length() != format.length()){
 10            //alert(objName+"长度和格式("+format+")要求的不一致,请重新输入");
 11            return false;
 12          }  
 13            Integer year=null,month=null ,day=null,hour=null,minute= null,second= null;
 14            
 15                  if( "YYYY".equals(format)){
 16                      year = Integer. valueOf(dateStr);
 17                 } else if( "YYYYMM".equals(format)){
 18                     year =  Integer.valueOf(dateStr.substring(0,4));
 19                     month =  Integer.valueOf(dateStr.substring(4,6));
 20                 } else if( "YYYYMMDD".equals(format)){
 21                     year =  Integer.valueOf(dateStr.substring(0,4));
 22                     month =  Integer.valueOf(dateStr.substring(4,6));
 23                     day =  Integer.valueOf(dateStr.substring(6,8));
 24                 } else if( "YYYYMMDD HH:MI".equals(format)){
 25                     year =  Integer.valueOf(dateStr.substring(0,4));
 26                     month =  Integer.valueOf(dateStr.substring(4,6));
 27                     day =  Integer.valueOf(dateStr.substring(6,8));
 28                     hour =  Integer.valueOf(dateStr.substring(9,11));
 29                     minute =  Integer.valueOf(dateStr.substring(12,14));
 30                 } else if( "YYYYMMDD HH:MI:SS".equals(format)){
 31                     year =  Integer.valueOf(dateStr.substring(0,4));
 32                     month =  Integer.valueOf(dateStr.substring(4,6));
 33                     day =  Integer.valueOf(dateStr.substring(6,8));
 34                     hour =  Integer.valueOf(dateStr.substring(9,11));
 35                     minute =  Integer.valueOf(dateStr.substring(12,14));
 36                     second =  Integer.valueOf(dateStr.substring(15,17));
 37                 } else if( "YYYY-MM".equals(format)){
 38                     if(! _checkSpecial(dateStr,4,"-")) return false;
 39                     year =  Integer.valueOf(dateStr.substring(0,4));
 40                     month =  Integer.valueOf(dateStr.substring(5,7));
 41                 } else if( "YYYY-MM-DD".equals(format)){
 42                     if(! _checkSpecial(dateStr,4,"-")) return false;
 43                     if(! _checkSpecial(dateStr,7,"-")) return false;
 44                     year =  Integer.valueOf(dateStr.substring(0,4));
 45                     month =  Integer.valueOf(dateStr.substring(5,7));
 46                     day =  Integer.valueOf(dateStr.substring(8,10));          
 47                 } else if( "YYYY-MM-DD HH:MI:SS".equals(format)){
 48                     if(! _checkSpecial(dateStr,4,"-")) return false;
 49                     if(! _checkSpecial(dateStr,7,"-")) return false;
 50                     year =  Integer.valueOf(dateStr.substring(0,4));
 51                     month =  Integer.valueOf(dateStr.substring(5,7));
 52                     day =  Integer.valueOf(dateStr.substring(8,10));
 53                     hour =  Integer.valueOf(dateStr.substring(11,13));
 54                     minute =  Integer.valueOf(dateStr.substring(14,16));
 55                     second =  Integer.valueOf(dateStr.substring(17,19));
 56                 } else if( "YYYYMMDDHHMISS".equals(format)){
 57                     year =  Integer.valueOf(dateStr.substring(0,4));
 58                     month =  Integer.valueOf(dateStr.substring(4,6));
 59                     day =  Integer.valueOf(dateStr.substring(6,8));
 60                     hour =  Integer.valueOf(dateStr.substring(8,10));
 61                     minute =  Integer.valueOf(dateStr.substring(10,12));
 62                     second =  Integer.valueOf(dateStr.substring(12,14));
 63                 } else{
 64                     //alert(objName+"中定义的时间格式还不能处理!");
 65                     return false;
 66                 }
 67            
 68                  //check year
 69                  if(year != null){
 70                    if(year<1900 || year>2200){
 71                            //alert(objName+" 年份 应介于1900与2200之间，请重新输入！");
 72                            return false;
 73                    }
 74                    
 75                 }
 76                  //check month
 77                  if(month != null){
 78                    if(month<1 || month >12){
 79                            //alert(objName+" 月份 应介于1与12之间，请重新输入！");
 80                            return false;
 81                    }     
 82                 }
 83                  //check day
 84                  if(day != null){
 85                    if((day==0)||(day>31)){
 86                            //alert(objName+" 日 必须介于1与31之间！");
 87                            return false;
 88                     }
 89                     else if(day>28 && day<31){
 90                            if(month==2){
 91                                            if(day!=29){
 92                                                    //alert(objName+year+"年"+month+"月无"+day+"日。");
 93                                                    return false;
 94                                            }
 95                                            else {
 96                                                    if((year%4)!=0){
 97                                                            //alert(objName+year+"年"+month+"月无"+day+"日。");
 98                                                            return false ;
 99                                                     }
100                                                     else {
101                                                            if((year%100==0)&&(year%400!=0)){
102                                                                   //alert(objName+year+"年"+month+"月无"+day+"日。");
103                                                                   return false ;
104                                                            }
105                                                     }
106                                            }
107                                    }
108                            }
109 
110                            else if(day==31){
111                                    if((month==2)||(month==4)||(month==6)||(month==9)||(month==11)){
112                                            //alert(objName+month+"月无"+day+"日");
113                                            return false;
114                                    }
115                            }    
116                 }
117                  //check hour
118                  if(hour != null){
119                    if(hour<0 || hour >23){
120                            //alert(objName+"小时应介于0与23之间，请重新输入！");
121                            return false;
122                    }     
123                 }
124                  //check minute
125                  if(minute != null){
126                    if(minute<0 || minute >59){
127                            //alert(objName+"小时应介于0与59之间，请重新输入！");
128                            return false;
129                    }    
130                 }
131                  //check second
132                  if(second != null){
133                    if(second<0 || second >59){
134                            //alert(objName+"秒应介于0与59之间，请重新输入！");
135                            return false;
136                    }     
137                 }    
138                  return true;    
139      }
140      
141      private static  boolean _checkSpecial(String str, int pos,String identifier){
142             if(str.substring(pos,pos+1).equals(identifier)) return true ;
143             return false;
144      }