版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/u010886975/article/details/76516144
/**
* 获取当前时间
*
* @return 当前时间
*/
public static String getdate() {
SimpleDateFormat formatter = new SimpleDateFormat("HH:mm");
Date curDate = new Date(System.currentTimeMillis());// 获取当前时间
String time = formatter.format(curDate);
return time;
}
/**
* 获取当前秒数
* @return
*/
public static String getSecond(){
Calendar calendar = Calendar.getInstance();
int sec = calendar.get(Calendar.SECOND);
String value = String.valueOf(sec<10?"0"+sec:sec);
return value;
}
/**
* 获取当天日期
*
* @return 当前时间
*/
public static String getriqi() {
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
Date curDate = new Date(System.currentTimeMillis());// 获取当天日期
String time = formatter.format(curDate);
return time;
}
/**
* 获取当前全部时间
*
* @return 当前时间
*/
public static String getalldate() {
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date curDate = new Date(System.currentTimeMillis());// 获取当前时间
String time = formatter.format(curDate);
return time;
}
public static Date getDate(String time){
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = null;
try {
date = formatter.parse(time);
} catch (ParseException e) {
e.printStackTrace();
}
return date;
}
/**
* 天数减一
*/
public static String Yesterday(int data) {
SimpleDateFormat dft = new SimpleDateFormat("yyyy-MM-dd");
Date beginDate = new Date();
Calendar date = Calendar.getInstance();
date.setTime(beginDate);
date.set(Calendar.DATE, date.get(Calendar.DATE) - data);
// Date endDate = dft.parse(dft.format(date.getTime()));
String time = dft.format(date.getTime());
return time;
}
/**
* 获取星期
*
* @param date日期
* ****-**-**
* @return
*/
public static int getDay(Date date) {
Calendar cal = Calendar.getInstance();
cal.setTime(date);
return cal.get(Calendar.DAY_OF_WEEK);
}
/**
* 时间顺序判断
* @param data_ruke
* @param data_choice
* @return
*/
public static boolean conpare_data(String data1,String data2){
if(data1==null||"".equals(data1)){
return true;
}
DateFormat dFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
try{
Date dt1 = dFormat.parse(data1);
Date dt2 = dFormat.parse(data2);
if(dt1.getTime()>dt2.getTime()){
Log.i("time_compare", "dt1在dt2之后");
return false;
}else if (dt1.getTime() < dt2.getTime()) {
Log.i("time_compare", "dt1在dt2之前");
return true;
}
}catch(Exception e){
e.printStackTrace();
}
return false;
}
/**
* 日期比较
*/
public static int compare_date(String DATE1, String DATE2) {
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
try {
Date dt1 = df.parse(DATE1);
Date dt2 = df.parse(DATE2);
if (dt1.getTime() > dt2.getTime()) {
if (dt1.getTime() - dt2.getTime() == 86400000) {
return 1;
} else if (dt1.getTime() - dt2.getTime() == (86400000 * 2)) {
return 2;
} else if (dt1.getTime() - dt2.getTime() == (86400000 * 3)) {
return 3;
} else {
return 0;
}
} else {
return 0;
}
} catch (Exception exception) {
exception.printStackTrace();
return 0;
}
}
/**
* 返回两个string类型日期之间相差的天数
*/
public static int daysBetween(String smdate,String bdate){
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");
Calendar cal = Calendar.getInstance();
long time1 = 0;
long time2 = 0;
try{
cal.setTime(sdf.parse(smdate));
time1 = cal.getTimeInMillis();
cal.setTime(sdf.parse(bdate));
time2 = cal.getTimeInMillis();
}catch(Exception e){
e.printStackTrace();
}
long between_days=(time2-time1)/(1000*3600*24);
return Integer.parseInt(String.valueOf(between_days));
}
/**
* 返回两个string类型日期相差的小时数
*/
public static int daysBetween2(String startTime, String endTime) {
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH");
Calendar cal = Calendar.getInstance();
long time1 = 0;
long time2 = 0;
try{
cal.setTime(sdf.parse(startTime));
time1 = cal.getTimeInMillis();
cal.setTime(sdf.parse(endTime));
time2 = cal.getTimeInMillis();
}catch(Exception e){
e.printStackTrace();
}
long between_days=(time2-time1)/(1000*3600);
return Integer.parseInt(String.valueOf(between_days));
}
/**
* 计算两段日期的重合日期
*/
/**
* 计算两段日期的重合日期
* @param str1 开始日期1
* @param str2 结束日期1
* @param str3 开始日期2
* @param str4 结束日期2
* @return
* @throws Exception
*/
public static Map<String,Object> comparisonRQ(String str1, String str2, String str3,
String str4) throws Exception {
String mesg = "";
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
String startdate = "";
String enddate = "";
try {
Date dt1 = df.parse(str1);
Date dt2 = df.parse(str2);
Date dt3 = df.parse(str3);
Date dt4 = df.parse(str4);
if (dt1.getTime()<=dt3.getTime()&&dt3.getTime()<=dt2.getTime()&&dt2.getTime()<=dt4.getTime()) {
mesg = "f";//重合
startdate = str3;
enddate = str2;
}
if (dt1.getTime()>=dt3.getTime()&&dt3.getTime()<=dt2.getTime()&&dt2.getTime()<=dt4.getTime()) {
mesg = "f";//重合
startdate = str1;
enddate = str2;
}
if (dt3.getTime()<=dt1.getTime()&&dt1.getTime()<=dt4.getTime()&&dt4.getTime()<=dt2.getTime()) {
mesg = "f";//重合
startdate = str1;
enddate = str4;
}
if (dt3.getTime()>=dt1.getTime()&&dt1.getTime()<=dt4.getTime()&&dt4.getTime()<=dt2.getTime()) {
mesg = "f";//重合
startdate = str3;
enddate = str4;
}
System.out.println(startdate+"----"+enddate);
}catch (ParseException e) {
e.printStackTrace();
throw new ParseException(e.getMessage(), 0);
}catch(Exception e){
e.printStackTrace();
throw new Exception(e);
}
Map<String,Object> map = new HashMap<String,Object>();
map.put("startdate", startdate);
map.put("enddate", enddate);
return map;
}