Hibernateutil class (used to connect to multiple databases)

Code: My commonly used hibernateutil class, hey

1. Public final class hibernateutil {
2. Private Static sessionfactory;
5. Private hibernateutil (){
6. }
9. // Initialization
10. Static {
11. Configuration CFG = new configuration ();
12. Cfg. Configure ();
13. Sessionfactory = cfg. buildsessionfactory ();
14. }
16. Public static sessionfactory getsessionfactory (){
17. Return sessionfactory;
18. }
20. Public static session getsession (){
21. Return sessionfactory. opensession ();
22. }
23. }

The above is the hibernateutil of a single database. The hibernate. cfg. xml file is under the classpath (SRC folder) by default ).

I wrote a file to Parse Multiple hibernate files. cfg. XML file, access the hibernateutil class of multiple databases (this means that your project can use multiple databases, but I am not clear about the transaction management of multiple databases, ):

Code:

1. Import org. hibernate. query;
2. Import org. hibernate. Session;
3. Import org. hibernate. sessionfactory;
4. Import org. hibernate. cfg. configuration;
6. Public final class hbnutil {// create a static sessionfactory according to hibernate. cfg. xml
8. Private Static sessionfactory SF;
9. Private Static sessionfactory mssf;
10. Static {
11. Try {
12. Sf = new configuration (). Configure ("/hbn-sqlserver.cfg.xml ")
    
13. . Buildsessionfactory ();
14. Mssf = new configuration (). Configure ("/hbn-mysql.cfg.xml ")
    
15. . Buildsessionfactory ();
16. } Catch (exception e ){
17. System. Err. println ("% error creating sessionfactory % ");
18. E. printstacktrace ();
19. }
20. }
22. Public static sessionfactory getsessionfactory (){
23. Return SF;
24. }
26. Public static session getsession (){
27. Session S = NULL;
28. If (! SF. isclosed ())
29. S = SF. opensession ();
30. Return S;
31. }
33. Public static session getsessionbydb (string dbname) {// judge based on dbname
34. Session S = NULL;
36. If ("MySQL". Equals (dbname. tolowercase ())){
37. If (! Mssf. isclosed ())
38. S = mssf. opensession ();
39. } Else if ("sqlserver". Equals (dbname. tolowercase ())){
40. If (! SF. isclosed ())
41. S = SF. opensession ();
42. } Else {
43. System. Out. println ("wrong dbname! ");
44. }
46. Return S;
47. }
49. Public static void closesessionfactory (){
50. If (! SF. isclosed ()){
51. SF. Close ();
52. }
53. }
55. Public static void closesessionfactorybydb (string dbname ){
57. If ("MySQL". Equals (dbname. tolowercase ())){
58. If (! Mssf. isclosed ()){
59. Mssf. Close ();
60. }
61. } Else if ("sqlserver". Equals (dbname. tolowercase ())){
62. If (! SF. isclosed ()){
63. SF. Close ();
64. }
65. } Else {
66. System. Out. println ("wrong dbname! ");
67. }
68. }
71. }