JAVA 中：
坑一：
replace没有用对象进行接收。直接使用
dateStr.replaceAll("\\/", "-");
是不行的，至少得加上 "dateStr = " 。
坑二：
正则匹配斜杠
\\d{4}\\\\\\d{1,2}\\\\\\d{1,2} 2016\05\05
中间得加6个斜杠转义。自行体会吧，都是泪啊，太隐蔽了……
坑三：
测试的时候没有转义斜杠
dealVenueDate("2016\\06\\07"),defaultDatePattern
基本的坑，没留意掉进去了
坑四：
正则匹配中文，要使用Unicode。不烦述。
public static String defaultDatePattern = "yyyy-MM-dd";
public Date dealVenueDate(String dateStr){
Date date = null;
String temp = "";
if(StringUtils.isBlank(dateStr)){
return date;
}
String format = "\\d{4}-\\d{2}-\\d{2}|\\d{4}\\/\\d{1,2}\\/\\d{1,2}|\\d{4}\\\\\\d{1,2}\\\\\\d{1,2}";// 2016-05-05 2016/05/05
Pattern pattern = Pattern.compile(format);
Matcher matcher = pattern.matcher(dateStr);
String format1 = "\\d{1,2}\\/\\d{1,2}\\/\\d{2}";// 5/5/16 05/05/16
Pattern pattern1 = Pattern.compile(format1);
Matcher matcher1 = pattern1.matcher(dateStr);
// String format2 = "\\d{1,2}\\[月]\\d{1,2}\\[日]";// 5月5日
// Pattern pattern2 = Pattern.compile(format2);
// Matcher matcher2 = pattern2.matcher(dateStr);
try {
if(matcher.matches()){
if(dateStr.contains("\\")){
dateStr = dateStr.replaceAll("\\\\", "-");
}
if(dateStr.contains("/")){
dateStr = dateStr.replaceAll("\\/", "-");
}
date = parse(dateStr,defaultDatePattern);
}else if(matcher1.matches()){
temp = dateStr.substring(dateStr.length()-2,dateStr.length());
String midTemp = dateStr.substring(0,dateStr.length()-3);
midTemp = midTemp.replaceAll("\\/", "-");
temp = "20" + temp + "-" + midTemp;
date = parse(temp,defaultDatePattern);
}else if(dateStr.indexOf("月") > 0 && dateStr.indexOf("日") > 0){//5月5日
temp = dateStr.substring(0,dateStr.indexOf("日"));
String[] data = temp.split("月");
if(data != null && data.length == 2){
Calendar cal = Calendar.getInstance();
String year = cal.get(Calendar.YEAR) + "";
temp = year + "-" + data[0] + "-" + data[1];
date = parse(temp,defaultDatePattern);
}
}
} catch (Exception e) {
e.printStackTrace();
}
return date ;
}
public static Date parse(String strDate, String pattern) throws ParseException {
SimpleDateFormat df = new SimpleDateFormat(pattern);
return df.parse(strDate);
}
public static String format(Date date, String pattern) {
String returnValue = "";
if (date != null) {
SimpleDateFormat df = new SimpleDateFormat(pattern);
returnValue = df.format(date);
}
return returnValue;
}
public static void main(String[] args) {
// SimpleDateFormat df = new SimpleDateFormat(defaultDatePattern);
// try {
// System.out.println("=========aaaaaa========"+df.parse("2016\\06\\07"));
// } catch (ParseException e) {
// // TODO Auto-generated catch block
// e.printStackTrace();
// }
// System.out.println("=========aaaaaa========"+format(dealVenueDate("2016\\06\\07"),defaultDatePattern));
// System.out.println("=========aaaaaa========"+format(dealVenueDate("2016/06/07"),defaultDatePattern));
// System.out.println("=========aaaaaa========"+format(dealVenueDate("6/7/16"),defaultDatePattern));
// System.out.println("=========aaaaaa========"+format(dealVenueDate("5月10日"),defaultDatePattern));
}