maybe 'index' is a keyword .be careful in sql programming , some words look likes keywords ,you should avoid them
org.hibernate.exception.SQLGrammarException: could not fetch initial value for increment generator
문제
Hi i am trying to make simple jsp registration form using hibernate where i am getting following Exception
type Exception report
messageInternal Server Error
descriptionThe server encountered an internal error that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: org.hibernate.exception.SQLGrammarException: could not fetch initial value for increment generator
root cause
org.hibernate.exception.SQLGrammarException: could not fetch initial value for increment generator
root cause
com.mysql.jdbc.exceptions.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'index) from user_registration' at line 1
Here is my
Userregistration.hbm.xml
<?xml version='1.0'?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Nov 9, 2011 6:53:58 PM by Hibernate Tools 3.2.1.GA -->
<hibernate-mapping>
<class name="com.hibernateClass.UserRegistration" table="user_registration">
<id name="index">
<generator class="increment"></generator>
</id>
<property name="userName"></property>
<property name="password"></property>
<property name="email"></property>
</class>
</hibernate-mapping>
hibernate.cfg.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<!-- Generated by MyEclipse Hibernate Tools. -->
<hibernate-configuration>
<session-factory>
<property name="hbm2ddl.auto">update</property>
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="connection.url">jdbc:mysql://localhost:3306/employee</property>
<property name="connection.username">root</property>
<property name="connection.password"></property>
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="show_sql">true</property>
<mapping resource="com/hibernateClass/UserRegistration.hbm.xml"/>
</session-factory>
</hibernate-configuration>
UserRegistration.java
public class UserRegistration implements java.io.Serializable {
int index;
String userName;
String password;
String email;
public int getIndex() {
return index;
}
public void setIndex(int index) {
this.index = index;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
How can i handle this Exception and get my desired output
Thanks in advance
해결책
다른 팁
Yes we cant use keyword of SQL in code. Otherwise it will show this type of error.
Note: You can check for SQL keyword by write in SQL Editor (Ex. SQLYOG) that will be capital letter ..here is screen Shot.enter image description here
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