休眠有2個線程，一個得到錯誤

Question

當Hibernate創建DB模式我有這樣的輸出：

21:22:25,518 INFO [stdout] (ServerService Thread Pool -- 13) Hibernate: 
21:22:25,518 INFO [stdout] (ServerService Thread Pool -- 13)  alter table Contacto 
21:22:25,518 INFO [stdout] (ServerService Thread Pool -- 13)   drop 
21:22:25,518 INFO [stdout] (ServerService Thread Pool -- 13)   foreign key FK_5jh2jf636mhuh77q4hwl1i2w0 
21:22:25,519 INFO [stdout] (ServerService Thread Pool -- 50) Hibernate: 
21:22:25,519 INFO [stdout] (ServerService Thread Pool -- 50)  alter table Contacto 
21:22:25,519 INFO [stdout] (ServerService Thread Pool -- 50)   drop 
21:22:25,519 INFO [stdout] (ServerService Thread Pool -- 50)   foreign key FK_5jh2jf636mhuh77q4hwl1i2w0 
21:22:25,587 INFO [stdout] (ServerService Thread Pool -- 13) Hibernate: 
21:22:25,587 INFO [stdout] (ServerService Thread Pool -- 13)  drop table if exists Contacto 
21:22:25,596 ERROR [org.hibernate.tool.hbm2ddl.SchemaExport] (ServerService Thread Pool -- 50) HHH000389: Unsuccessful: alter table Contacto drop foreign key FK_5jh2jf636mhuh77q4hwl1i2w0 
21:22:25,596 ERROR [org.hibernate.tool.hbm2ddl.SchemaExport] (ServerService Thread Pool -- 50) Can't DROP 'FK_5jh2jf636mhuh77q4hwl1i2w0'; check that column/key exists 
21:22:25,597 INFO [stdout] (ServerService Thread Pool -- 50) Hibernate: 
21:22:25,597 INFO [stdout] (ServerService Thread Pool -- 50)  drop table if exists Contacto 
21:22:25,600 INFO [stdout] (ServerService Thread Pool -- 13) Hibernate: 
21:22:25,600 INFO [stdout] (ServerService Thread Pool -- 13)  drop table if exists Usuario 
21:22:25,600 INFO [stdout] (ServerService Thread Pool -- 50) Hibernate: 
21:22:25,601 INFO [stdout] (ServerService Thread Pool -- 50)  drop table if exists Usuario 
21:22:25,604 INFO [stdout] (ServerService Thread Pool -- 13) Hibernate: 
21:22:25,604 INFO [stdout] (ServerService Thread Pool -- 13)  create table Contacto (
21:22:25,604 INFO [stdout] (ServerService Thread Pool -- 13)   id integer not null, 
21:22:25,605 INFO [stdout] (ServerService Thread Pool -- 13)   email varchar(255), 
21:22:25,605 INFO [stdout] (ServerService Thread Pool -- 13)   nombre varchar(255), 
21:22:25,605 INFO [stdout] (ServerService Thread Pool -- 13)   telefono varchar(255), 
21:22:25,605 INFO [stdout] (ServerService Thread Pool -- 13)   usuario_cuenta varchar(255), 
21:22:25,605 INFO [stdout] (ServerService Thread Pool -- 13)   primary key (id) 
21:22:25,605 INFO [stdout] (ServerService Thread Pool -- 13) ) 
21:22:25,606 INFO [stdout] (ServerService Thread Pool -- 50) Hibernate: 
21:22:25,606 INFO [stdout] (ServerService Thread Pool -- 50)  create table Contacto (
21:22:25,606 INFO [stdout] (ServerService Thread Pool -- 50)   id integer not null, 
21:22:25,606 INFO [stdout] (ServerService Thread Pool -- 50)   email varchar(255), 
21:22:25,606 INFO [stdout] (ServerService Thread Pool -- 50)   nombre varchar(255), 
21:22:25,606 INFO [stdout] (ServerService Thread Pool -- 50)   telefono varchar(255), 
21:22:25,607 INFO [stdout] (ServerService Thread Pool -- 50)   usuario_cuenta varchar(255), 
21:22:25,607 INFO [stdout] (ServerService Thread Pool -- 50)   primary key (id) 
21:22:25,607 INFO [stdout] (ServerService Thread Pool -- 50) ) 
21:22:25,625 ERROR [org.hibernate.tool.hbm2ddl.SchemaExport] (ServerService Thread Pool -- 50) HHH000389: Unsuccessful: create table Contacto (id integer not null, email varchar(255), nombre varchar(255), telefono varchar(255), usuario_cuenta varchar(255), primary key (id)) 
21:22:25,625 INFO [stdout] (ServerService Thread Pool -- 13) Hibernate: 
21:22:25,625 ERROR [org.hibernate.tool.hbm2ddl.SchemaExport] (ServerService Thread Pool -- 50) Table 'contacto' already exists 
21:22:25,626 INFO [stdout] (ServerService Thread Pool -- 13)  create table Usuario (
21:22:25,626 INFO [stdout] (ServerService Thread Pool -- 13)   cuenta varchar(255) not null, 
21:22:25,626 INFO [stdout] (ServerService Thread Pool -- 13)   apellidos varchar(255), 
21:22:25,627 INFO [stdout] (ServerService Thread Pool -- 13)   email varchar(255), 
21:22:25,627 INFO [stdout] (ServerService Thread Pool -- 13)   nombre varchar(255), 
21:22:25,627 INFO [stdout] (ServerService Thread Pool -- 13)   password varchar(255), 
21:22:25,628 INFO [stdout] (ServerService Thread Pool -- 13)   primary key (cuenta) 
21:22:25,628 INFO [stdout] (ServerService Thread Pool -- 13) ) 
21:22:25,628 INFO [stdout] (ServerService Thread Pool -- 50) Hibernate: 
21:22:25,629 INFO [stdout] (ServerService Thread Pool -- 50)  create table Usuario (
21:22:25,629 INFO [stdout] (ServerService Thread Pool -- 50)   cuenta varchar(255) not null, 
21:22:25,629 INFO [stdout] (ServerService Thread Pool -- 50)   apellidos varchar(255), 
21:22:25,629 INFO [stdout] (ServerService Thread Pool -- 50)   email varchar(255), 
21:22:25,630 INFO [stdout] (ServerService Thread Pool -- 50)   nombre varchar(255), 
21:22:25,630 INFO [stdout] (ServerService Thread Pool -- 50)   password varchar(255), 
21:22:25,630 INFO [stdout] (ServerService Thread Pool -- 50)   primary key (cuenta) 
21:22:25,630 INFO [stdout] (ServerService Thread Pool -- 50) ) 
21:22:25,639 ERROR [org.hibernate.tool.hbm2ddl.SchemaExport] (ServerService Thread Pool -- 50) HHH000389: Unsuccessful: create table Usuario (cuenta varchar(255) not null, apellidos varchar(255), email varchar(255), nombre varchar(255), password varchar(255), primary key (cuenta)) 
21:22:25,639 ERROR [org.hibernate.tool.hbm2ddl.SchemaExport] (ServerService Thread Pool -- 50) Table 'usuario' already exists 
21:22:25,640 INFO [stdout] (ServerService Thread Pool -- 50) Hibernate: 
21:22:25,640 INFO [stdout] (ServerService Thread Pool -- 50)  alter table Contacto 
21:22:25,640 INFO [stdout] (ServerService Thread Pool -- 50)   add constraint FK_5jh2jf636mhuh77q4hwl1i2w0 
21:22:25,641 INFO [stdout] (ServerService Thread Pool -- 50)   foreign key (usuario_cuenta) 
21:22:25,641 INFO [stdout] (ServerService Thread Pool -- 50)   references Usuario (cuenta) 
21:22:25,641 INFO [stdout] (ServerService Thread Pool -- 13) Hibernate: 
21:22:25,641 INFO [stdout] (ServerService Thread Pool -- 13)  alter table Contacto 
21:22:25,642 INFO [stdout] (ServerService Thread Pool -- 13)   add constraint FK_5jh2jf636mhuh77q4hwl1i2w0 
21:22:25,642 INFO [stdout] (ServerService Thread Pool -- 13)   foreign key (usuario_cuenta) 
21:22:25,642 INFO [stdout] (ServerService Thread Pool -- 13)   references Usuario (cuenta) 
21:22:25,657 INFO [org.hibernate.tool.hbm2ddl.SchemaExport] (ServerService Thread Pool -- 50) HHH000230: Schema export complete 
21:22:25,664 ERROR [org.hibernate.tool.hbm2ddl.SchemaExport] (ServerService Thread Pool -- 13) HHH000389: Unsuccessful: alter table Contacto add constraint FK_5jh2jf636mhuh77q4hwl1i2w0 foreign key (usuario_cuenta) references Usuario (cuenta) 
21:22:25,665 ERROR [org.hibernate.tool.hbm2ddl.SchemaExport] (ServerService Thread Pool -- 13) Can't write; duplicate key in table '#sql-2f4_20' 

它看起來像應用程序有2個線程休眠的，並且這些線程正在同一SQL語句（如創建相同的表格等）

發生了什麼事？

在此先感謝

Answer 1

您的問題是不在冬眠。您的代碼與編譯後的代碼不同步。 嘗試讓它始終保持同步，或者創建一個新的工作區並從您的回購站點下載代碼。