/**
* 把12小时格式的时间字符串转换为24小时格式的字符串
* input: 07:05:45PM
* output: 19:05:45
* input: 12:00:00PM
* output: 00:00:00
* @param lowFormatTimeStr
* @return
*/
public static String convertTimeFormate(String lowFormatTimeStr){
if(lowFormatTimeStr==null){
return null;
}
String trim =lowFormatTimeStr.trim();
if (trim.isEmpty()){
return null;
}
int length =trim.length();
if (length!=10){
return null;
}
String substring7 =trim.substring(0,2);
if (substring7.equals("00")){
return null;
}else {
Integer i =Integer.valueOf(substring7);
if (i>12){
return null;
}
}
String substring8 =trim.substring(3,5);
if (!(substring8.substring(0,1).equals("0"))){
Integer i =Integer.valueOf(substring8);
if (i>60){
return null;
}
}
String substring9 =trim.substring(6,8);
if (!(substring9.substring(0,1).equals("0"))){
Integer i =Integer.valueOf("0");
if (i>60){
return null;
}
}
for (int i =0;i
char c =trim.charAt(i);
if (trim.endsWith("PM")){
continue;
}else if(trim.endsWith("AM")){
continue;
}else {
return null;
}
}
String substring =trim.substring(0,2);
for (int i =0;i
char c =substring.charAt(i);
if (!Character.isDigit(c)){
return null;
}
}
String substring1 =trim.substring(2,3);
if (!substring1.equals(":")){
return null;
}
String substring2 =trim.substring(3,5);
for (int i =0;i
char c =substring2.charAt(i);
if(!Character.isDigit(c)){
return null;
}
}
String substring3 =trim.substring(5,6);
if(!substring3.equals(":")){
return null;
}
String substring4 =trim.substring(6,8);
for (int i =0;i
char c =substring4.charAt(i);
if (!Character.isDigit(c)){
return null;
}
}
String substring5 =trim.substring(0,2);
StringBuilder stringBuilder =new StringBuilder();
if (trim.endsWith("PM")){
String substring6 =substring5.substring(0,1);
Integer i=null;
if (substring6.equals("0")){
i =Integer.valueOf(substring5.substring(1));
}else {
i =Integer.valueOf(substring5);
}
if (i<12){
i+=12;
}else {
i-=12;
}
if (i>=10){
String s =String.valueOf(i);
stringBuilder.append(s);
stringBuilder.append(trim.substring(2,8));
}else {
StringBuilder stringBuilder1 =new StringBuilder();
stringBuilder1.append(0);
stringBuilder1.append(i);
stringBuilder1.append(trim.substring(2,8));
return stringBuilder1.toString();
}
}else {
return trim.substring(0,8);
}
return stringBuilder.toString();
}
