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Editorial Team
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Asked: 2026-05-25T06:32:58+00:00

When I try to load an object( a row ) from mysql database, the

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When I try to load an object( a row ) from mysql database, the string properties are not loaded properly , and as a result when I print them, nothing is displayed.

here is my hibernate config file :

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM 
          "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory>    
    <property name="connection.driver_class">
       com.mysql.jdbc.Driver
    </property>
    <property name="connection.url">
      jdbc:mysql://localhost:3306/demo_hib_1
    </property>
    <property name="connection.username">root</property>
    <property name="connection.password"> </property>
    <property name="pool_size">5</property>
    <property name="show_sql">true</property>
    <property name="dialect">
      org.hibernate.dialect.MySQLDialect
    </property>
    <!-- Mapping files -->

     <mapping resource="com/navid/Person.hbm.xml"/>

  </session-factory>
</hibernate-configuration>

I tryed adding encoding to connection url :

jdbc:mysql://localhost:3306/demo_hib_1&characterEncoding=UTF-8

and got hibernate exception :

Exception in thread "main" org.hibernate.HibernateException: Could not parse configuration: /hibernate.cfg.xml
    at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2246)
    at org.hibernate.cfg.Configuration.configure(Configuration.java:2158)
    at org.hibernate.cfg.Configuration.configure(Configuration.java:2137)
    at com.navid.Main.main(Main.java:31)
Caused by: org.dom4j.DocumentException: Error on line 10 of document  : The reference to entity "characterEncoding" must end with the ';' delimiter. Nested exception: The reference to entity "characterEncoding" must end with the ';' delimiter.
    at org.dom4j.io.SAXReader.read(SAXReader.java:482)
    at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2238)
    ... 3 more
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1 Answer

  1. Editorial Team

    The hibernate config file is an XML file, so raw & symbols aren’t allowed

    Two options that spring to mind (but untested!), the first would be to use the XML &amp; escape sequence:

    <property name="connection.url">
  jdbc:mysql://localhost:3306/demo_hib_1?useUnicode=true&amp;characterEncoding=UTF-8
</property>

    Or using name+value syntax, which wouldn’t need the & escaping:

    <property name="connection.url" value="jdbc:mysql://localhost:3306/demo_hib_1?useUnicode=true&characterEncoding=UTF-8" />

    Note that I’ve added a 2nd option too, I think you need both

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