public static longgetSpanHour(String string_time_in, String string_time_out, String string_free_start,

String string_free_end) {try{//包含的完整的免费时段次数

int span_times = 0;//跨天停车标识符

boolean dayFlag = false;

String date= string_time_in.substring(0, 10);

string_free_start= date + " " +string_free_start;

string_free_end= date + " " +string_free_end;//驶入时间

Timestamp time_in =Timestamp.valueOf(string_time_in);//驶出时间

Timestamp time_out =Timestamp.valueOf(string_time_out);long span_hour = (time_out.getTime() - time_in.getTime()) / (60 * 60 * 1000);//超时停车标识符

boolean overFlag = false;if ((time_out.getTime() - time_in.getTime()) % (60 * 60 * 1000) / (60 * 1000) > 5) {

overFlag= true;

}//免费停车标识符

boolean free = false;//免费时段开始

Timestamp free_start =Timestamp.valueOf(string_free_start);//免费时段结束

Timestamp free_end =Timestamp.valueOf(string_free_end);//免费时段时长(小时)

long span_free_hour = (free_end.getTime() - free_start.getTime()) / (60 * 60 * 1000) + 24;//停车时间超过24小时，跨天停车标识符为true，减去一个免费时段时长

long boundary =span_hour;while (boundary >= 24) {

boundary-= 24;

span_times++;

dayFlag= true;

}

span_hour= span_hour - span_times *span_free_hour;//时间转化为同一天进行计算剩余时长

time_in.setYear(time_out.getYear());

time_in.setMonth(time_out.getMonth());

time_in.setDate(time_out.getDate());

free_start.setYear(time_out.getYear());

free_start.setMonth(time_out.getMonth());

free_start.setDate(time_out.getDate());

free_end.setYear(time_out.getYear());

free_end.setMonth(time_out.getMonth());

free_end.setDate(time_out.getDate());if (time_in.before(free_end) || time_in.after(free_start)) {//免费时段驶入

if (time_out.before(free_end) || time_out.after(free_start)) {//免费时段驶出

overFlag = false;if (dayFlag) {//跨天停车

if (time_in.before(time_out)) {//转化为一天后，驶入时间在驶出时间之前

span_hour -= (time_out.getTime() - time_in.getTime()) / (60 * 60 * 1000);

}else if (time_in.after(time_out)) {//转化为一天后，驶入时间在驶出时间之后

span_hour -= 24 - Math.ceil((time_in.getTime() - time_out.getTime()) / (60.0 * 60 * 1000));

}else{//do nothing

}

}else {//非跨天停车

if (time_in.before(time_out)) {//转化为一天后，驶入时间在驶出时间之前

span_hour = 0;

free= true;

}else if (time_in.after(time_out)) {//转化为一天后，驶入时间在驶出时间之后

span_hour -=span_free_hour;

}else{//do nothing

}

}

}else {//非免费时段驶出

if((time_out.getTime() - free_end.getTime()) % (60 * 60 * 1000) / (60 * 1000) <= 5) {

overFlag= false;

}if (dayFlag) {//跨天停车

if (time_in.before(time_out)) {//转化为一天后，驶入时间在驶出时间之前

span_hour -= (free_end.getTime() - time_in.getTime()) / (60 * 60 * 1000);

}else if (time_in.after(time_out)) {//转化为一天后，驶入时间在驶出时间之后

span_hour -= 24 - (time_in.getTime() - free_end.getTime()) / (60 * 60 * 1000);

}

}else {//非跨天停车

if (time_in.before(time_out)) {//转化为一天后，驶入时间在驶出时间之前

span_hour -= (free_end.getTime() - time_in.getTime()) / (60 * 60 * 1000);

}else if (time_in.after(time_out)) {//转化为一天后，驶入时间在驶出时间之后

span_hour -= 24 - (time_in.getTime() - free_end.getTime()) / (60 * 60 * 1000);

}

}

}

}else {//非免费时段驶入

if (time_out.before(free_end) || time_out.after(free_start)) {//免费时段驶出

if (dayFlag) {//跨天停车

if (time_in.before(time_out)) {//转化为一天后，驶入时间在驶出时间之前

span_hour -= (time_out.getTime() - free_start.getTime()) / (60 * 60 * 1000);

}else if (time_in.after(time_out)) {//转化为一天后，驶入时间在驶出时间之后//do nothing

}

}else {//非跨天停车

if (time_in.before(time_out)) {//转化为一天后，驶入时间在驶出时间之前

span_hour -= (time_out.getTime() - free_start.getTime()) / (60 * 60 * 1000);

}else if (time_in.after(time_out)) {//转化为一天后，驶入时间在驶出时间之后//do nothing

}

}

}else {//非免费时段驶出

if (dayFlag) {//跨天停车

if (time_in.before(time_out)) {//转化为一天后，驶入时间在驶出时间之前//do nothing

} else if (time_in.after(time_out)) {//转化为一天后，驶入时间在驶出时间之后

span_hour -= 24 - ((time_in.getTime() - time_out.getTime()) / (60 * 60 * 1000));

span_hour+= (free_start.getTime() - time_in.getTime()) / (60 * 60 * 1000);

span_hour+= (time_out.getTime() - free_end.getTime()) / (60 * 60 * 1000);

}

}else {//非跨天停车

if (time_in.before(time_out)) {//转化为一天后，驶入时间在驶出时间之前//do nothing

} else if (time_in.after(time_out)) {//转化为一天后，驶入时间在驶出时间之后//do nothing

}

}

}

}//超过5分钟按一小时

if(overFlag) {

span_hour++;

}if (free || span_hour < 0) {

span_hour= 0;

}returnspan_hour;

}catch(Exception exception) {

exception.printStackTrace();

}return 0;

}