Java retrieval time is less than 8 hours solution

This problem has also been encountered recently. The same time is calculated on a computer, but it takes 8 hours to change the computer.

Keyword: JVM 8-hour time difference

Change the time zone of a specific application without changing the Machine Time Zone (multiple methods ):

 

1,

Timezone TZ = timezone. gettimezone ("Asia/Shanghai ");
Timezone. setdefault (Tz );

 

2,

Java-duser. timezone = UTC timezonetip

Java-duser. timezone = Asia/Shanghai

 

3,

For tomcat, modify its Catalina. BAT to set java_opts =-duser. timezone = Asia/Shanghai

Add-duser. timezone = Asia/Shanghai.

 

4. Code

Date utildate = new java. util. Date ();

Simpledateformat myfmt = new simpledateformat ("yyyy-mm-dd hh: mm: SS ");
Timezone timezonechina = timezone. gettimezone ("Asia/Shanghai"); // obtain the China Time Zone
Myfmt. settimezone (timezonechina); // sets the system time zone
Return myfmt. Format (utildate );

This problem has also been encountered recently. The same time is calculated on a computer, but it takes 8 hours to change the computer.

Keyword: JVM 8-hour time difference

Change the time zone of a specific application without changing the Machine Time Zone (multiple methods ):

 

1,

Timezone TZ = timezone. gettimezone ("Asia/Shanghai ");
Timezone. setdefault (Tz );

 

2,

Java-duser. timezone = UTC timezonetip

Java-duser. timezone = Asia/Shanghai

 

3,

For tomcat, modify its Catalina. BAT to set java_opts =-duser. timezone = Asia/Shanghai

Add-duser. timezone = Asia/Shanghai.

 

4. Code

Date utildate = new java. util. Date ();

Simpledateformat myfmt = new simpledateformat ("yyyy-mm-dd hh: mm: SS ");
Timezone timezonechina = timezone. gettimezone ("Asia/Shanghai"); // obtain the China Time Zone
Myfmt. settimezone (timezonechina); // sets the system time zone
Return myfmt. Format (utildate );