Could not parse mapping document from resource

Question

HI All,
I'm using hibernate3.2.2 I wrote the following code to contact the database but the system tells the error on it. My code is
Dealer.java:
package com.mapping;
public class Dealer {
     private int id;
     private String name;
     private int did;
     public int getDid() {
          return did;
     public void setDid(int did) {
          this.did = did;
     public int getId() {
          return id;
     public void setId(int id) {
          this.id = id;
     public String getName() {
          return name;
     public void setName(String name) {
          this.name = name;
Product.java
------------------package com.mapping;
public class Product {
     private int id;
     private int did;
     private String name;
     private double price;
     public int getDid() {
          return did;
     public void setDid(int did) {
          this.did = did;
     public int getId() {
          return id;
     public void setId(int id) {
          this.id = id;
     public String getName() {
          return name;
     public void setName(String name) {
          this.name = name;
     public double getPrice() {
          return price;
     public void setPrice(double price) {
          this.price = price;
JoinExample.java
package com.mapping;
import java.util.Iterator;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import com.HibernateSessionFactory;
public class JoinExample {
     public static void main(String args[]){
          Session session=null;
          try{
               session = HibernateSessionFactory.getInstance().getCurrentSession();
               session.beginTransaction();
               String sql_query = "from Product p inner join p.dealer as d";
                    Query query = session.createQuery(sql_query);
                    Iterator ite = query.list().iterator();
                    System.out.println("Dealer Name\t"+"Product Name\t"+"Price");
                    while ( ite.hasNext() ) {
                    Object[] pair = (Object[]) ite.next();
                    Product pro = (Product) pair[0];
                    Dealer dea = (Dealer) pair[1];
                    System.out.print(pro.getName());
                    System.out.print("\t"+dea.getName());
                    System.out.print("\t\t"+pro.getPrice());
                    System.out.println();
                    session.close();
          }catch(Exception e){
               e.printStackTrace();
Dealer.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN"
"http://hibernate.sourceforge.net/
hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.mapping.Dealer" table="dealer">
<id name="id" type="java.lang.Integer" column="id">
<generator class="increment"/>
</id>
<property name="name" type="java.lang.String" column="name"/>
<property name="did" type="java.lang.Integer" column="did"/>
<bag name="product" inverse="true" cascade="all,delete-orphan">
          <key column="did"/>
<one-to-many class="com.mapping.Product"/>
</bag>
</class>
</hibernate-mapping>
Product.xml
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-mapping
PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN"
"http://hibernate.sourceforge.net/
hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.mapping.Product" table="product">
<id name="id" type="java.lang.Integer" column="id">
<generator class="increment"/>
</id>
<property name="name" type="java.lang.String" column="name"/>
<property name="did" type="java.lang.Integer" column="did"/>
<property name="price" type="java.lang.Double" column="price"/>
<many-to-one name="dealer" class="com.mapping.Dealer" column="did" insert="false" update="false"/>
</class>
</hibernate-mapping>
hibernate.cfg.xml
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost/hibernate</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password"></property>
<property name="hibernate.connection.pool_size">10</property>
<property name="show_sql">true</property>
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.hbm2ddl.auto">update</property>
<!-- Mapping files -->
<mapping resource="com/mapping/Dealer.hbm.xml"/>
<mapping resource="com/mapping/Product.hbm.xml"/>
</session-factory>
</hibernate-configuration>
it throws the following example:
log4j:WARN No appenders could be found for logger (org.hibernate.cfg.Environment).
log4j:WARN Please initialize the log4j system properly.
%%%% Error Creating HibernateSessionFactory %%%%
org.hibernate.InvalidMappingException: Could not parse mapping document from resource com/mapping/Dealer.hbm.xml
     at org.hibernate.cfg.Configuration.addResource(Configuration.java:575)
     at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1593)
     at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1561)
     at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1540)
     at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1514)
     at org.hibernate.cfg.Configuration.configure(Configuration.java:1434)
     at com.HibernateSessionFactory.initSessionFactory(HibernateSessionFactory.java:39)
     at com.HibernateSessionFactory.getInstance(HibernateSessionFactory.java:23)
     at com.mapping.JoinExample.main(JoinExample.java:19)
Caused by: org.hibernate.InvalidMappingException: Could not parse mapping document from input stream
     at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:514)
     at org.hibernate.cfg.Configuration.addResource(Configuration.java:572)
     ... 8 more
Caused by: org.dom4j.DocumentException: hibernate.sourceforge.net Nested exception: hibernate.sourceforge.net
     at org.dom4j.io.SAXReader.read(SAXReader.java:484)
     at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:505)
     ... 9 more
org.hibernate.HibernateException: Could not initialize the Hibernate configuration
     at com.HibernateSessionFactory.initSessionFactory(HibernateSessionFactory.java:56)
     at com.HibernateSessionFactory.getInstance(HibernateSessionFactory.java:23)
     at com.mapping.JoinExample.main(JoinExample.java:19)
regards,
Maheshwaran Devaraj

Answer 1

I also faced same problem when i wrote my first hibernate mapping file, this error will accur because of bad xml parser design, the parser developer did not even validate and remove blank lines from xml before parsing it, becuse of that if there is first blank line in your xml mapping file then we will get "The processing instruction target matching "[xX][mM][lL]" is not allowed" error.
Solution: Just check is there any blank line at the begining of your hibernate mapping file if so remove that then it will works fine.