获取org.hibernate.InvalidMappingException：无法读取XML

Question

我正在使用NetbeansIDE 7.2。和pgAdmin III PostgreSQL 9.2，数据库名称为“ StudentReports”。

我对Hibernate和通过JDBC Connection使用本机SQL生成JasperReports有所了解，但是对于通过本教程显示的通过Hibernate Connection进行连接来生成JasperReports是我的新手。

我正在接受o rg.hibernate.InvalidMappingException: Unable to read XML Error并且从未成功进行过Hibernate Connection测试，在遵循了本教程“ JasperReports with Hibernate-Module 1 ”之后，弹出错误消息“无法从资源com / report / mappings / Department.hbm.xml解析映射文档”。“和JasperReports与Hibernate模块2。它有2个模块。但是我对其数据访问对象（DAO）文件做了一些修改，我只想拥有一个部门记录。另外，我使用了不同版本的Hibernate和Jasper Reports软件包以及用于Netbeans的iReport插件，它们分别是Hibernate 4.1.9和Jasper Reports 5.0.1和iReport-4.5.0。我已将其所有的jar文件添加到项目的Library中。

这是我第一次处理休眠映射xml文件和数据访问对象文件。

log4j：WARN找不到记录器的附加程序（org.jboss.logging）。log4j：WARN请正确初始化log4j系统。
在org.hibernate.cfg.Configuration.configure（Configuration.java:1914）在com.report.dao.DepartmentDAO.saveDepartment（DepartmentDAO.java:20）处的configure（Configuration.java:1935）在com.report.test.AddDepartments处.main（AddDepartments.java:20）原因：org.dom4j.DocumentException：文档第15行出错：元素类型“休眠映射”必须由匹配的结束标记“”终止。嵌套异常：元素类型“休眠映射”必须由匹配的结束标记“”终止。在org.dom.j.io.SAXReader.read（SAXReader.java:482）在org.hibernate.internal.util.xml.MappingReader.readMappingDocument（MappingReader.java:78）...在Java上还有12个结果：1 com.report.test.AddDepartments.main（AddDepartments.java:20）处的report.dao.DepartmentDAO.saveDepartment（DepartmentDAO.java:20）原因：org.dom4j.DocumentException：文档第15行出错：元素类型“休眠映射”必须由匹配的结束标记“”终止。嵌套异常：元素类型“休眠映射”必须由匹配的结束标记“”终止。在org.dom.j.io.SAXReader.read（SAXReader.java:482）在org.hibernate.internal.util.xml.MappingReader.readMappingDocument（MappingReader.java:78）...在Java上还有12个结果：1 com.report.test.AddDepartments.main（AddDepartments.java:20）处的report.dao.DepartmentDAO.saveDepartment（DepartmentDAO.java:20）原因：org.dom4j.DocumentException：文档第15行出错：元素类型“休眠映射”必须由匹配的结束标记“”终止。嵌套异常：元素类型“休眠映射”必须由匹配的结束标记“”终止。在org.dom.j.io.SAXReader.read（SAXReader.java:482）在org.hibernate.internal.util.xml.MappingReader.readMappingDocument（MappingReader.java:78）...在Java上还有12个结果：1

这些是我的代码：

部门.java

package com.report.beans;
  public class Department  implements java.io.Serializable {

 private int id;
 private String name;

public long getId() {
    return this.id;
}

public void setId(int id) {
    this.id = id;
}
public String getName() {
    return this.name;
}

public void setName(String name) {
    this.name = name;
}
}

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"> 
<hibernate-configuration>
 <session-factory>
 <property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
  <property name="hibernate.connection.url"> jdbc:postgresql://localhost:5432/StudentReports</property>
  <property name="hibernate.connection.username">postgres</property>
  <property name="hibernate.connection.password">postgres</property>
  <property name="hibernate.connection.pool_size">1</property>
  <property name="hibernate.show_sql">true</property>
  <property name="hibernate.cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
   <property name="hibernate.hbm2ddl.auto">update</property>    

<mapping resource="com/report/mappings/Department.hbm.xml"/>
</session-factory>

Department.hbm.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"          "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.report.beans.Department"  lazy="false" table="Department" schema="dbo"      catalog="StudentReports"/>
        <id name="id" type="long">
        <column name="ID" />
        <generator class="increment" />
    </id>
    <property name="name" type="string">
        <column name="name" length="100" not-null="true" unique="true" />
    </property>

部门DAO.java

package com.report.dao;

import com.report.beans.Department;
import org.hibernate.Session;

import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class DepartmentDAO{


public String saveDepartment(Department department)
{

    SessionFactory sessionF = new Configuration().configure().buildSessionFactory();
    Session session = sessionF.openSession();

//  This is the code I modified. I didn'y use HibernateSessionFactory
//  Session session = HibernateSessionFactory.getSession();
    String Result = "";

    try
    {
        session.beginTransaction();
        session.save(department);
        session.getTransaction().commit();
        session.close();
        Result = "Department Saved Successfully";
    }
    catch(Exception e)
    {
        e.printStackTrace();
        session.close();
        Result = "Department was not saved due to the above Exception";
    }

    return Result;
}
}

AddDepartments.java

package com.report.test;

import com.report.beans.Department;
import com.report.dao.DepartmentDAO;

public class AddDepartments
{
public static void main(String args[])
{
    Department electronics = new Department();
        electronics.setName("Electronics Engineering");

    Department computerScience = new Department();
        computerScience.setName("Computer science Engineering");

    Department civil = new Department();
        civil.setName("Civil Engineering");


    String Result1 = new DepartmentDAO().saveDepartment(electronics);
        System.out.println(Result1);

    String Result2 = new DepartmentDAO().saveDepartment(computerScience);
        System.out.println(Result2);

    String Result3 = new DepartmentDAO().saveDepartment(civil);
        System.out.println(Result3);
}
}

Answer 1

错误显示

元素类型“休眠映射”必须由匹配的结束标记终止

因此Department.hbm.xml，按照XML解析器的预期，为此元素添加一个匹配的结束标记。

</hibernate-mapping>

同样，hibernate-configuration在hibernate.cfg.xml

</hibernate-configuration>