无法创建sessionFactory object.org.hibernate.InvalidMappingException：无法从资源Employee.hbm.xml中解析映射文档 [英] Failed to create sessionFactory object.org.hibernate.InvalidMappingException: Could not parse mapping document from resource Employee.hbm.xml

问题描述

这是我的Employee.hbm.xml

 <？xml version =1.0encoding =utf-8 >？; 
<！DOCTYPE hibernate-mapping PUBLIC -  // Hibernate / Hibernate映射DTD // ENhttp://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd\"> 
< hibernate-mapping package =com.demo.hibernate.beans> 
< class name =Employeetable =employee> 
< meta attribute =class-description> 
此类包含员工详细信息。 
< / meta> 
< id name =idtype =intcolumn =id> 
< generator class =native/> 
< / id> 
< property name =firstNamecolumn =first_nametype =string/> 
< property name =lastNamecolumn =last_nametype =string/> 
< property name =salarycolumn =salarytype =int/> 
< / class> 
< / hibernate-mapping> 
  

在运行hibernate时，我得到以下异常：

 无法创建sessionFactory object.org.hibernate.InvalidMappingException：无法从资源Employee.hbm.xml解析映射文档
线程main中的异常java.lang.ExceptionInInitializerError 
 at com.demo.hibernate.beans.ManageEmployee.main（ManageEmployee.java:20）
引起：org.hibernate.InvalidMappingException：无法从资源Employee.hbm.xml $ b解析映射文档$ b在org.hibernate.cfg.Configuration.addResource（Configuration.java:575）
在org.hibernate.cfg.Configuration.parseMappingElement（Configuration.java:1593）
在org.hibernate.cfg .Configuration.parseSessionFactory（Configuration.java:1561）
在org.hibernate.cfg.Configuration.doConfigure（Configuration.java:1540）
在org.hibernate.cfg.Configuration.doConfigure（Configuration.java ：1514）
在org.hibernate.cfg.Configuration.configure （Configuration.java:1434）
 at org.hibernate.cfg.Configuration.configure（Configuration.java:1420）
 at com.demo.hibernate.beans.ManageEmployee.main（ManageEmployee.java:17 ）
导致：org.hibernate.InvalidMappingException：无法从输入流解析映射文档
在org.hibernate.cfg.Configuration.addInputStream（Configuration.java:514）
 at org。 hibernate.cfg.Configuration.addResource（Configuration.java:572）
 ... 7 more 
引起：org.dom4j.DocumentException：www.hibernate.org嵌套异常：www.hibernate.org 
 at org.dom4j.io.SAXReader.read（SAXReader.java:484）
 at org.hibernate.cfg.Configuration.addInputStream（Configuration.java:505）
 ... 8 more 
  

可能的原因是什么？

编辑：发布员工bean

  public class Employee {
 private int id; 
 private String firstName; 
 private String lastName; 
 private int salary; 
 $ b $ public Employee（）{} 
 public Employee（String fname，String lname，int salary）{
 this.firstName = fname; 
 this.lastName = lname; 
 this.salary =薪水; 
} 
 public int getId（）{
 return id; 
} 
 public void setId（int id）{
 this.id = id; 
} 
 public String getFirstName（）{
 return firstName; 
} 
 public void setFirstName（String first_name）{
 this.firstName = first_name; 
} 
 public String getLastName（）{
 return lastName; 
} 
 public void setLastName（String last_name）{
 this.lastName = last_name; 
} 
 public int getSalary（）{
 return salary; 
} 
 public void setSalary（int salary）{
 this.salary = salary; 
 
 
 $ / code> 

和postgres中的数据库结构

  create table EMPLOYEE（
 id INT NOT NULL DEFAULT nextval（'emp_id_seq':: regclass），
 first_name VARCHAR（20 ）默认NULL，
 last_name VARCHAR（20）默认NULL，
 salary INT默认NULL，
 PRIMARY KEY（id）
）; 
 
 
 CREATE SEQUENCE emp_id_seq 
增量1 
 MINVALUE 1 
 MAXVALUE 9223372036854775807 
 START 10000 
 CACHE 1; 
  




解决方案

您的文档类型有问题。从你复制的地方？我复制了你的代码并改变了docttype。它适用。

用于Hibernate DOCTYPE 3.0

 < ？xml version =1.0？> 
<！DOCTYPE hibernate-mapping PUBLIC -  // Hibernate / Hibernate Mapping DTD 3.0 // ENhttp://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd\"> 
  

Here is my Employee.hbm.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN" "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"> 
<hibernate-mapping package = "com.demo.hibernate.beans">
   <class name="Employee" table="employee">
      <meta attribute="class-description">
         This class contains the employee detail. 
      </meta>
      <id name="id" type="int" column="id">
         <generator class="native"/>
      </id>
      <property name="firstName" column="first_name" type="string"/>
      <property name="lastName" column="last_name" type="string"/>
      <property name="salary" column="salary" type="int"/>
   </class>
</hibernate-mapping>

While running hibernate i get the following exception

Failed to create sessionFactory object.org.hibernate.InvalidMappingException: Could not parse mapping document from resource Employee.hbm.xml
Exception in thread "main" java.lang.ExceptionInInitializerError
    at com.demo.hibernate.beans.ManageEmployee.main(ManageEmployee.java:20)
Caused by: org.hibernate.InvalidMappingException: Could not parse mapping document from resource Employee.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 org.hibernate.cfg.Configuration.configure(Configuration.java:1420)
    at com.demo.hibernate.beans.ManageEmployee.main(ManageEmployee.java:17)
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)
    ... 7 more
Caused by: org.dom4j.DocumentException: www.hibernate.org Nested exception: www.hibernate.org
    at org.dom4j.io.SAXReader.read(SAXReader.java:484)
    at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:505)
    ... 8 more

What can be the possible reason ?

EDIT : Posting the employee bean

public class Employee {
       private int id;
       private String firstName; 
       private String lastName;   
       private int salary;  

       public Employee() {}
       public Employee(String fname, String lname, int salary) {
          this.firstName = fname;
          this.lastName = lname;
          this.salary = salary;
       }
       public int getId() {
          return id;
       }
       public void setId( int id ) {
          this.id = id;
       }
       public String getFirstName() {
          return firstName;
       }
       public void setFirstName( String first_name ) {
          this.firstName = first_name;
       }
       public String getLastName() {
          return lastName;
       }
       public void setLastName( String last_name ) {
          this.lastName = last_name;
       }
       public int getSalary() {
          return salary;
       }
       public void setSalary( int salary ) {
          this.salary = salary;
       }
    }

and the database structure in postgres

create table EMPLOYEE (
   id INT NOT NULL   DEFAULT nextval('emp_id_seq'::regclass),
   first_name VARCHAR(20) default NULL,
   last_name  VARCHAR(20) default NULL,
   salary     INT  default NULL,
   PRIMARY KEY (id)
);


CREATE SEQUENCE emp_id_seq
  INCREMENT 1
  MINVALUE 1
  MAXVALUE 9223372036854775807
  START 10000
  CACHE 1;

解决方案

Your doctype has a problem. From where you copied? I copied your code and changed docttype. it works.

Use this for Hibernate DOCTYPE 3.0

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

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