Java calls bat

ArticleDirectory

• 2. 1. Disadvantages:
• 2. solution:
• . Problems with automatic exit

1. References

1. Ask a question about executing the. BAT file in Java under Win-> answer on the 6th floor

2. How can I automatically exit after calling cmd to run the BAT file-> answer on the 11 th floor

3. Java calls bat

In the previous blog, I wrote about MySQL database backup and recovery. This is mainly done by manually calling the BAT file.Program. This is the topic of this blog.

2. instance 1:

 Import Java. Io. ioexception;

 Public   Class Invokebat4 {
 Public   Void Runbat (string batname ){
String cmd = "CMD/C start F: \ database_backup \ ngx_backup \" + batname + ". Bat "; //  Pass  
          Try {
Process PS = runtime.getruntime(cmd.exe C (CMD );
PS. waitfor ();
} Catch (Ioexception IOE ){
IOE. printstacktrace ();
}
 Catch (Interruptedexception e ){
 //  Todo auto-generated Catch Block 
 E. printstacktrace ();
}
System. Out. println ("Child thread Donn ");
}

 Public   Static   Void Main (string [] ARGs ){
Invokebat4 test1 = New Invokebat4 ();
Test1.runbat ("backup_ngx ");
System. Out. println ("main thread ");
}
}

2. 1. Disadvantages:

The cmd box is displayed and cannot be closed automatically.

2. solution:

Add

Exit

For example, the content of the original BAT file is as follows:

 
Mysqldump-Uroot-Proot--Database ngx_ad ngx_authority ngx_jbpm ngx_mes ngx_model> F: \ database_backup \ ngx_backup \ ngx_db. SQL
 

We modify it

 
Mysqldump-Uroot-Proot--Database ngx_ad ngx_authority ngx_jbpm ngx_mes ngx_model> F: \ database_backup \ ngx_backup \ ngx_db. SQL
Exit
 

. Problems with automatic exit

Even if you can exit automatically, the CMD command box will always pop up every time you call this bat.

3. Improve the instance and directly execute bat

 Import Java. Io. ioexception;
 Import Java. Io. inputstream;

 Public   Class Invokebat2 {
 Public   Void Runbat (string batname ){
 Try {
Process PS = runtime.getruntime(cmd.exe C (batname );
Inputstream in = ps. getinputstream ();
 Int C;
 While (C = in. Read ())! =-1 ){
System. Out. Print (C ); //  If you do not need to view the output, you can cancel this line.  
 }
In. Close ();
PS. waitfor ();

} Catch (Ioexception IOE ){
IOE. printstacktrace ();
} Catch (Interruptedexception e ){
 //  Todo auto-generated Catch Block  
 E. printstacktrace ();
}
System. Out. println ("Child thread done ");
}

 Public   Static   Void Main (string [] ARGs ){
Invokebat2 test1 = New Invokebat2 ();
String batname = "f :\\ database_backup \ ngx_backup \ backup_ngx.bat ";
Test1.runbat (batname );
System. Out. println ("main thread ");
}
}