我在Wildfly服务器中部署的JavaEE应用程序中使用Hibernate和websockets。 我的问题是，当我尝试插入新用户时，hibernate复制插入，我得到2个用户使用不同的id，因为我使用自动生成主键。 我尝试了太多的解决方案，但没有一个帮助:( 这是我的例子：
用户表
package database;
import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import org.hibernate.annotations.Generated;
import org.hibernate.annotations.GenerationTime;
import org.hibernate.id.IncrementGenerator;
import javax.persistence.*;
import java.io.Serializable;
import javax.persistence.*;
@Entity
@Table(name = "Eutilisateur")
public class Eutilisateur implements Serializable{
private int idUser;
private String username;
private String password;
private String typeUser;
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
@Column(name = "id_user", nullable = false,updatable = false)
public int getIdUser() {
return idUser;
}
public void setIdUser(int idUser) {
this.idUser = idUser;
}
@Basic
@Column(name = "username", nullable = false, length = 20)
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
@Basic
@Column(name = "password", nullable = false, length = 20)
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
@Basic
@Column(name = "type_user", nullable = false, length = 20)
public String getTypeUser() {
return typeUser;
}
public void setTypeUser(String typeUser) {
this.typeUser = typeUser;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Eutilisateur that = (Eutilisateur) o;
if (idUser != that.idUser) return false;
if (username != null ? !username.equals(that.username) : that.username != null) return false;
if (password != null ? !password.equals(that.password) : that.password != null) return false;
if (typeUser != null ? !typeUser.equals(that.typeUser) : that.typeUser != null) return false;
return true;
}
@Override
public int hashCode() {
int result = idUser;
result = 31 * result + (username != null ? username.hashCode() : 0);
result = 31 * result + (password != null ? password.hashCode() : 0);
result = 31 * result + (typeUser != null ? typeUser.hashCode() : 0);
return result;
}
}
webSocket类
import com.sun.org.apache.regexp.internal.RE;
import service.WebHeler;
import javax.websocket.OnClose;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.ServerEndpoint;
import java.io.BufferedReader;
import java.io.IOException;
@ServerEndpoint(value = "/DynamicWeb")
public class DynamicWeb {
@OnOpen
public void onOpen(Session session) {
System.out.println(session.getId() + " has opened a connection");
}
@OnMessage
public void onMessage(String message, Session session) throws IOException {
System.out.println("Message from " + session.getId() + ": " + message);
Response.getResponse(message,getClass().getClassLoader());
session.getBasicRemote().sendText(" message recieved");
try {
String resopnse = Response.getResponse(message,getClass().getClassLoader());
session.getBasicRemote().sendText(resopnse);
} catch (IOException ex) {
ex.printStackTrace();
}
}
@OnClose
public void onClose(Session session){
System.out.println("Session " +session.getId()+" has ended");
}
}
Response类
public static String getResponse(String messsage, ClassLoader loader) {
String file = "";
if (messsage.startsWith("command")) {
return databaseCommand(messsage);
}
String full = "";
try {
InputStream inputStream = loader
.getResourceAsStream(file);
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
String chunk = "";
while ((chunk = reader.readLine()) != null) {
full += chunk + " ";
}
System.out.println(full);
} catch (IOException e) {
e.printStackTrace();
}
return full;
}
public static String databaseCommand(String message) {
String[] parametrs = message.split(";");
String response = "";
if (parametrs[1].equals("adduser")) {
String userName = parametrs[2];
String Password = parametrs[3];
String Type = parametrs[4];
if (userName.equals(""))
return "user name length ==0";
System.out.println("add user command " + userName + " " + Password + " " + Type);
Session session = HibernateHelper.getSession();
Transaction transaction = session.getTransaction();
transaction.begin();
try{
Eutilisateur user = new Eutilisateur();
user.setPassword(pass);
user.setTypeUser(type);
user.setUsername(username);
session.save(user);
}catch (HibernateException e){
e.printStackTrace();
transaction.rollback();
}finally {
transaction.commit();
}
}
return response;
}
}
我的hibernate.cfg.xml
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- database related configurations -->
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost:3306/pro</property>
<property name="connection.username">****</property>
<property name="connection.password">****</property>
<!--<property name="hibernate.hbm2ddl.auto">validate</property>-->
<property name="pool_size">5</property>
<property name="connection.autocommit">true</property>
<property name="show_sql">true</property>
<property name="dialect">
org.hibernate.dialect.MySQL5Dialect</property>
<mapping class="database.Eutilisateur"/>
</session-factory>
</hibernate-configuration>
日志错误是这样的：我认为我有多线程runnig那里，我不能停止'em
23:30:56,064 INFO [org.hibernate.cfg.annotations.Version] (default task-31) Hibernate Annotations 3.4.0.GA
23:30:56,080 INFO [org.hibernate.cfg.Environment] (default task-31) Hibernate 3.3.0.SP1
23:30:56,080 INFO [org.hibernate.cfg.Environment] (default task-31) hibernate.properties not found
23:30:56,080 INFO [org.hibernate.cfg.Environment] (default task-31) Bytecode provider name : javassist
23:30:56,080 INFO [org.hibernate.cfg.Environment] (default task-31) using JDK 1.4 java.sql.Timestamp handling
23:30:56,111 INFO [org.hibernate.annotations.common.Version] (default task-31) Hibernate Commons Annotations 3.1.0.GA
23:30:56,111 INFO [org.hibernate.cfg.Configuration] (default task-31) configuring from resource: /Hibernate.cfg.xml
23:30:56,111 INFO [org.hibernate.cfg.Configuration] (default task-31) Configuration resource: /Hibernate.cfg.xml
23:30:56,158 INFO [org.hibernate.cfg.Configuration] (default task-31) Configured SessionFactory: null
23:30:56,158 INFO [org.hibernate.cfg.search.HibernateSearchEventListenerRegister] (default task-31) Unable to find org.hibernate.search.event.FullTextIndexEventListener on the classpath. Hibernate Search is not enabled.
23:30:56,173 INFO [org.hibernate.cfg.AnnotationBinder] (default task-31) Binding entity from annotated class: database.Eutilisateur
23:30:56,189 INFO [org.hibernate.cfg.annotations.EntityBinder] (default task-31) Bind entity database.Eutilisateur on table Eutilisateur
23:30:56,204 INFO [org.hibernate.cfg.AnnotationBinder] (default task-31)
(default task-31) Using Hibernate built-in connection pool (not for production use!)
23:30:56,267 INFO [org.hibernate.connection.DriverManagerConnectionProvider] (default task-31) Hibernate connection pool size: 20
23:30:56,267 INFO [org.hibernate.connection.DriverManagerConnectionProvider] (default task-31) autocommit mode: true
23:30:56,267 INFO [org.hibernate.connection.DriverManagerConnectionProvider] (default task-31) using driver: com.mysql.jdbc.Driver at URL: jdbc:mysql://localhost:3306/pro
23:30:56,267 INFO [org.hibernate.connection.DriverManagerConnectionProvider] (default task-31) connection properties: {user=root, password=****, autocommit=true}
23:30:56,486 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) RDBMS: MySQL, version: 5.7.13-log
23:30:56,486 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) JDBC driver: MySQL-AB JDBC Driver, version: mysql-connector-java-5.1.9 ( Revision: ${svn.Revision} )
23:30:56,486 INFO [org.hibernate.dialect.Dialect] (default task-31) Using dialect: org.hibernate.dialect.MySQL5Dialect
23:30:56,486 INFO [org.hibernate.transaction.TransactionFactoryFactory] (default task-31) Using default transaction strategy (direct JDBC transactions)
23:30:56,486 INFO [org.hibernate.transaction.TransactionManagerLookupFactory] (default task-31) No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended)
23:30:56,486 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Automatic flush during beforeCompletion(): disabled
23:30:56,486 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Automatic session close at end of transaction: disabled
23:30:56,486 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) JDBC batch size: 15
23:30:56,486 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) JDBC batch updates for versioned data: disabled
23:30:56,486 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Scrollable result sets: enabled
23:30:56,486 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) JDBC3 getGeneratedKeys(): enabled
23:30:56,486 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Connection release mode: auto
23:30:56,486 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Maximum outer join fetch depth: 2
23:30:56,486 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Default batch fetch size: 1
23:30:56,486 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Generate SQL with comments: disabled
23:30:56,486 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Order SQL updates by primary key: disabled
23:30:56,501 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Order SQL inserts for batching: disabled
23:30:56,501 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
23:30:56,501 INFO [org.hibernate.hql.ast.ASTQueryTranslatorFactory] (default task-31) Using ASTQueryTranslatorFactory
23:30:56,501 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Query language substitutions: {}
23:30:56,501 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) JPA-QL strict compliance: disabled
23:30:56,501 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Second-level cache: enabled
23:30:56,501 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Query cache: disabled
23:30:56,501 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Cache region factory : org.hibernate.cache.impl.NoCachingRegionFactory
23:30:56,501 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Optimize cache for minimal puts: disabled
23:30:56,501 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Structured second-level cache entries: disabled
23:30:56,501 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Echoing all SQL to stdout
23:30:56,501 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Statistics: disabled
23:30:56,501 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Deleted entity synthetic identifier rollback: disabled
23:30:56,501 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Default entity-mode: pojo
23:30:56,501 INFO [org.hibernate.cfg.SettingsFactory] (default task-31) Named query checking : enabled
23:30:56,517 INFO [org.hibernate.impl.SessionFactoryImpl] (default task-31) building session factory
23:30:56,658 INFO [org.hibernate.impl.SessionFactoryObjectFactory] (default task-31) Not binding factory to JNDI, no JNDI name configured
23:30:56,689 INFO [stdout] (default task-31) Hibernate: insert into Eutilisateur (password, type_user, username) values (?, ?, ?)
23:30:56,751 INFO [stdout] (default task-31) add user command te best fddf
23:30:56,751 INFO [stdout] (default task-31) Hibernate: insert into Eutilisateur (password, type_user, username) values (?, ?, ?)
23:30:56,783 ERROR [stderr] (default task-31) java.io.IOException: UT002002: Channel is closed