为什么我收到一个映射异常，其根本原因是 SAXParseException；行号：19；列数：45
why am receiving a mapping exception with the root cause as SAXParseException; lineNumber: 19; columnNumber: 45
Buyer.hbm.xml
是买家映射文件
<?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="entity.Buyer" table="buyer">
<id name="id" type="java.lang.Integer">
<column name="id" />
<generator class="identity" />
</id>
<property name="username" type="string">
<column name="username" length="25" not-null="true" unique="true" />
</property>
<property name="fname" type="string">
<column name="fname" length="20" not-null="true" />
</property>
<property name="lname" type="string">
<column name="lname" length="20" not-null="true" />
</property>
<property name="email" type="string">
<column name="email" length="50" not-null="true" unique="true" />
</property>
<property name="phoneno" type="int">
<column name="phoneno" not-null="true" unique="true" />
</property>
<property name="password" type="string">
<column name="password" length="30" not-null="true" />
</property>
<property name="location" type="string">
<column name="location" length="16" not-null="true" />
</property>
</class>
</hibernate-mapping>
Buyer.java
是一个 POJO class，创建为来自 sql 数据库
的实体
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package entity;
import java.io.Serializable;
import javax.persistence.Basic;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.xml.bind.annotation.XmlRootElement;
/**
*
* @author Tariana
*/
@Entity
@XmlRootElement
@NamedQueries({
@NamedQuery(name = "Buyer.findAll", query = "SELECT b FROM Buyer b")
, @NamedQuery(name = "Buyer.findById", query = "SELECT b FROM Buyer b WHERE b.id = :id")
, @NamedQuery(name = "Buyer.findByUsername", query = "SELECT b FROM Buyer b WHERE b.username = :username")
, @NamedQuery(name = "Buyer.findByFname", query = "SELECT b FROM Buyer b WHERE b.fname = :fname")
, @NamedQuery(name = "Buyer.findByLname", query = "SELECT b FROM Buyer b WHERE b.lname = :lname")
, @NamedQuery(name = "Buyer.findByEmail", query = "SELECT b FROM Buyer b WHERE b.email = :email")
, @NamedQuery(name = "Buyer.findByPhoneno", query = "SELECT b FROM Buyer b WHERE b.phoneno = :phoneno")
, @NamedQuery(name = "Buyer.findByPassword", query = "SELECT b FROM Buyer b WHERE b.password = :password")
, @NamedQuery(name = "Buyer.findByLocation", query = "SELECT b FROM Buyer b WHERE b.location = :location")})
public class Buyer implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Basic(optional = false)
private Integer id;
@Basic(optional = false)
private String username;
@Basic(optional = false)
private String fname;
@Basic(optional = false)
private String lname;
@Basic(optional = false)
private String email;
@Basic(optional = false)
private int phoneno;
@Basic(optional = false)
private String password;
@Basic(optional = false)
private String location;
public Buyer() {
}
public Buyer(Integer id) {
this.id = id;
}
public Buyer(Integer id, String username, String fname, String lname, String email, int phoneno, String password, String location) {
this.id = id;
this.username = username;
this.fname = fname;
this.lname = lname;
this.email = email;
this.phoneno = phoneno;
this.password = password;
this.location = location;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getFname() {
return fname;
}
public void setFname(String fname) {
this.fname = fname;
}
public String getLname() {
return lname;
}
public void setLname(String lname) {
this.lname = lname;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public int getPhoneno() {
return phoneno;
}
public void setPhoneno(int phoneno) {
this.phoneno = phoneno;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getLocation() {
return location;
}
public void setLocation(String location) {
this.location = location;
}
@Override
public int hashCode() {
int hash = 0;
hash += (id != null ? id.hashCode() : 0);
return hash;
}
@Override
public boolean equals(Object object) {
// TODO: Warning - this method won't work in the case the id fields are not set
if (!(object instanceof Buyer)) {
return false;
}
Buyer other = (Buyer) object;
if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {
return false;
}
return true;
}
@Override
public String toString() {
return "entity.Buyer[ id=" + id + " ]";
}
}
Registration.java
应该为从 jsp 文件到 sql 数据库
的数据提供持久性
import entity.Buyer;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.hibernate.*;
import org.hibernate.boot.registry.*;
import org.hibernate.cfg.Configuration;
import org.hibernate.metamodel.*;
public class Register extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Buyer buyerreg = new Buyer();
String email = request.getParameter("email");
String password = request.getParameter("password");
String username = request.getParameter("username");
String fname = request.getParameter("fname");
String lname = request.getParameter("lname");
String phone = request.getParameter("phoneno");
int phoneno = Integer.parseInt(phone);
String location = request.getParameter("location");
buyerreg.setEmail(email);
buyerreg.setPassword(password);
buyerreg.setFname(fname);
buyerreg.setLname(lname);
buyerreg.setUsername(username);
buyerreg.setPhoneno(phoneno);
buyerreg.setLocation(location);
Configuration configuration = new Configuration();
configuration.addAnnotatedClass(Buyer.class)
.configure();
StandardServiceRegistry ssr = new StandardServiceRegistryBuilder()
.applySettings(configuration.getProperties())
.configure("hibernate.cfg.xml")
.build();
Metadata meta = new MetadataSources(ssr).getMetadataBuilder().build();
SessionFactory factory;
factory = meta.getSessionFactoryBuilder().build();
Session session=factory.openSession();
Transaction t = session.beginTransaction();
session.persist(buyerreg);
t.commit();
session.close();
System.out.println("success");
response.sendRedirect("shop.jsp");
}
}
hibernate.cfg.xml
是我的休眠配置文件
<?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.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/mkulimaonline</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.show_sql">true</property>
<property name="hibernate.current_session_context_class">thread</property>
<property name="hibernate.query.factory_class">org.hibernate.hql.internal.classic.ClassicQueryTranslatorFactory</property>
<property name="hibernate.connection.autocommit">true</property>
<property name="hibernate.hbm2ddl.auto">create</property>
<mapping class="entity.Buyer" package="entity" resource="entity/Buyer.hbm.xml"/>
<property name="annotatedClasses"><list><value>entity.Buyer</value></list>
</property>
</session-factory>
</hibernate-configuration>
错误
正在浏览器上显示
message invalid configuration
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.hibernate.MappingException: invalid configuration
org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2158)
org.hibernate.cfg.Configuration.configure(Configuration.java:2075)
org.hibernate.cfg.Configuration.configure(Configuration.java:2054)
Register.doGet(Register.java:38)
javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
root cause
org.xml.sax.SAXParseException; lineNumber: 19; columnNumber: 45; Element type "list" must be declared.
com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:134)
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:396)
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:327)
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:284)
com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.handleStartElement(XMLDTDValidator.java:1906)
com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.startElement(XMLDTDValidator.java:742)
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:374)
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2784)
com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112)
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:842)
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:771)
com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:643)
org.dom4j.io.SAXReader.read(SAXReader.java:465)
org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2155)
org.hibernate.cfg.Configuration.configure(Configuration.java:2075)
org.hibernate.cfg.Configuration.configure(Configuration.java:2054)
Register.doGet(Register.java:38)
javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
如您的异常所述，XML 解析器 (SAXParseException) 存在问题。如果您看一下，在定义的 DTD 中，您可以检查元素下是否没有允许的元素。我认为您从 spring 配置中复制了一些内容。
如果您从 hibernate.cfg.xml 文件中删除这些行，将不会显示 SAXParseException：
<property name="annotatedClasses"><list><value>entity.Buyer</value></list>
</property>
我从 hibernate.cfg.xml 文件中删除了带注释的 class。我没有使用 Spring。但不知何故这奏效了
我不知道为什么这段代码不起作用 org.hibernate.MappingException：未知实体：entity.Buyer 这个错误仍然存在所以我评论了代码
SessionFactory factory;
StandardServiceRegistry ssr = new StandardServiceRegistryBuilder()
.applySettings(configuration.getProperties())
.configure("hibernate.cfg.xml")
.build();
Metadata meta = new MetadataSources(ssr).getMetadataBuilder().build();
factory = meta.getSessionFactoryBuilder().build();
Session session=factory.openSession();
Transaction t = session.beginTransaction();
session.persist(buyerreg);
t.commit();
session.close();
这是我用的
hibernate.cfg.config
<?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.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/mkulimaonline</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.show_sql">true</property>
<property name="hibernate.current_session_context_class">thread</property>
<property name="hibernate.query.factory_class">org.hibernate.hql.internal.classic.ClassicQueryTranslatorFactory</property>
<property name="hibernate.connection.autocommit">true</property>
<property name="hibernate.hbm2ddl.auto">update</property>
</session-factory>
</hibernate-configuration>
Registration.java 我评论了不起作用的代码，而这个替代方法不知何故起作用了
import entity.Buyer;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.hibernate.*;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.service.ServiceRegistryBuilder;
public class Register extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Buyer buyerreg = new Buyer();
String email = request.getParameter("email");
String password = request.getParameter("password");
String username = request.getParameter("username");
String fname = request.getParameter("fname");
String lname = request.getParameter("lname");
String phone = request.getParameter("phoneno");
int phoneno = Integer.parseInt(phone);
String location = request.getParameter("location");
buyerreg.setEmail(email);
buyerreg.setPassword(password);
buyerreg.setFname(fname);
buyerreg.setLname(lname);
buyerreg.setUsername(username);
buyerreg.setPhoneno(phoneno);
buyerreg.setLocation(location);
SessionFactory sessionFactory;
ServiceRegistry serviceRegistry;
Configuration configuration = new Configuration();
configuration.addAnnotatedClass(Buyer.class)
.addResource("entity/Buyer.hbm.xml")
.configure();
serviceRegistry = new ServiceRegistryBuilder()
.applySettings(configuration.getProperties())
.configure("hibernate.cfg.xml")
.build();
sessionFactory = configuration.buildSessionFactory(serviceRegistry);
Session session = sessionFactory.openSession();
session.beginTransaction();
session.persist(buyerreg);
session.getTransaction().commit();
session.close();
System.out.println("success");
response.sendRedirect("shop.jsp");
/*SessionFactory factory;
StandardServiceRegistry ssr = new StandardServiceRegistryBuilder()
.applySettings(configuration.getProperties())
.configure("hibernate.cfg.xml")
.build();
Metadata meta = new MetadataSources(ssr).getMetadataBuilder().build();
factory = meta.getSessionFactoryBuilder().build();
Session session=factory.openSession();
Transaction t = session.beginTransaction();
session.persist(buyerreg);
t.commit();
session.close();
*/
}
}
Buyer.java 我不得不使用数据库中自动生成的 java class ...我自己的创作有这个错误即使在使用 @Entity 注释 "org.hibernate.MappingException: Unknown entity: entity.Buyer"
之后
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package entity;
import java.io.Serializable;
import javax.persistence.Basic;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.xml.bind.annotation.XmlRootElement;
/**
*
* @author Tariana
*/
@Entity
@XmlRootElement
@NamedQueries({
@NamedQuery(name = "Buyer.findAll", query = "SELECT b FROM Buyer b")
, @NamedQuery(name = "Buyer.findById", query = "SELECT b FROM Buyer b WHERE b.id = :id")
, @NamedQuery(name = "Buyer.findByUsername", query = "SELECT b FROM Buyer b WHERE b.username = :username")
, @NamedQuery(name = "Buyer.findByFname", query = "SELECT b FROM Buyer b WHERE b.fname = :fname")
, @NamedQuery(name = "Buyer.findByLname", query = "SELECT b FROM Buyer b WHERE b.lname = :lname")
, @NamedQuery(name = "Buyer.findByEmail", query = "SELECT b FROM Buyer b WHERE b.email = :email")
, @NamedQuery(name = "Buyer.findByPhoneno", query = "SELECT b FROM Buyer b WHERE b.phoneno = :phoneno")
, @NamedQuery(name = "Buyer.findByPassword", query = "SELECT b FROM Buyer b WHERE b.password = :password")
, @NamedQuery(name = "Buyer.findByLocation", query = "SELECT b FROM Buyer b WHERE b.location = :location")})
public class Buyer implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Basic(optional = false)
private Integer id;
@Basic(optional = false)
private String username;
@Basic(optional = false)
private String fname;
@Basic(optional = false)
private String lname;
@Basic(optional = false)
private String email;
@Basic(optional = false)
private int phoneno;
@Basic(optional = false)
private String password;
@Basic(optional = false)
private String location;
public Buyer() {
}
public Buyer(Integer id) {
this.id = id;
}
public Buyer(Integer id, String username, String fname, String lname, String email, int phoneno, String password, String location) {
this.id = id;
this.username = username;
this.fname = fname;
this.lname = lname;
this.email = email;
this.phoneno = phoneno;
this.password = password;
this.location = location;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getFname() {
return fname;
}
public void setFname(String fname) {
this.fname = fname;
}
public String getLname() {
return lname;
}
public void setLname(String lname) {
this.lname = lname;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public int getPhoneno() {
return phoneno;
}
public void setPhoneno(int phoneno) {
this.phoneno = phoneno;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getLocation() {
return location;
}
public void setLocation(String location) {
this.location = location;
}
@Override
public int hashCode() {
int hash = 0;
hash += (id != null ? id.hashCode() : 0);
return hash;
}
@Override
public boolean equals(Object object) {
// TODO: Warning - this method won't work in the case the id fields are not set
if (!(object instanceof Buyer)) {
return false;
}
Buyer other = (Buyer) object;
if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {
return false;
}
return true;
}
@Override
public String toString() {
return "entity.Buyer[ id=" + id + " ]";
}
}
和Buyer.hbm.xml保持不变
<?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="entity.Buyer" table="buyer">
<id name="id" type="java.lang.Integer">
<column name="id" />
<generator class="identity" />
</id>
<property name="username" type="string">
<column name="username" length="25" not-null="true" unique="true" />
</property>
<property name="fname" type="string">
<column name="fname" length="20" not-null="true" />
</property>
<property name="lname" type="string">
<column name="lname" length="20" not-null="true" />
</property>
<property name="email" type="string">
<column name="email" length="50" not-null="true" unique="true" />
</property>
<property name="phoneno" type="int">
<column name="phoneno" not-null="true" unique="true" />
</property>
<property name="password" type="string">
<column name="password" length="30" not-null="true" />
</property>
<property name="location" type="string">
<column name="location" length="16" not-null="true" />
</property>
</class>
</hibernate-mapping>
Buyer.hbm.xml 是买家映射文件
<?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="entity.Buyer" table="buyer">
<id name="id" type="java.lang.Integer">
<column name="id" />
<generator class="identity" />
</id>
<property name="username" type="string">
<column name="username" length="25" not-null="true" unique="true" />
</property>
<property name="fname" type="string">
<column name="fname" length="20" not-null="true" />
</property>
<property name="lname" type="string">
<column name="lname" length="20" not-null="true" />
</property>
<property name="email" type="string">
<column name="email" length="50" not-null="true" unique="true" />
</property>
<property name="phoneno" type="int">
<column name="phoneno" not-null="true" unique="true" />
</property>
<property name="password" type="string">
<column name="password" length="30" not-null="true" />
</property>
<property name="location" type="string">
<column name="location" length="16" not-null="true" />
</property>
</class>
</hibernate-mapping>
Buyer.java 是一个 POJO class，创建为来自 sql 数据库
的实体/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package entity;
import java.io.Serializable;
import javax.persistence.Basic;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.xml.bind.annotation.XmlRootElement;
/**
*
* @author Tariana
*/
@Entity
@XmlRootElement
@NamedQueries({
@NamedQuery(name = "Buyer.findAll", query = "SELECT b FROM Buyer b")
, @NamedQuery(name = "Buyer.findById", query = "SELECT b FROM Buyer b WHERE b.id = :id")
, @NamedQuery(name = "Buyer.findByUsername", query = "SELECT b FROM Buyer b WHERE b.username = :username")
, @NamedQuery(name = "Buyer.findByFname", query = "SELECT b FROM Buyer b WHERE b.fname = :fname")
, @NamedQuery(name = "Buyer.findByLname", query = "SELECT b FROM Buyer b WHERE b.lname = :lname")
, @NamedQuery(name = "Buyer.findByEmail", query = "SELECT b FROM Buyer b WHERE b.email = :email")
, @NamedQuery(name = "Buyer.findByPhoneno", query = "SELECT b FROM Buyer b WHERE b.phoneno = :phoneno")
, @NamedQuery(name = "Buyer.findByPassword", query = "SELECT b FROM Buyer b WHERE b.password = :password")
, @NamedQuery(name = "Buyer.findByLocation", query = "SELECT b FROM Buyer b WHERE b.location = :location")})
public class Buyer implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Basic(optional = false)
private Integer id;
@Basic(optional = false)
private String username;
@Basic(optional = false)
private String fname;
@Basic(optional = false)
private String lname;
@Basic(optional = false)
private String email;
@Basic(optional = false)
private int phoneno;
@Basic(optional = false)
private String password;
@Basic(optional = false)
private String location;
public Buyer() {
}
public Buyer(Integer id) {
this.id = id;
}
public Buyer(Integer id, String username, String fname, String lname, String email, int phoneno, String password, String location) {
this.id = id;
this.username = username;
this.fname = fname;
this.lname = lname;
this.email = email;
this.phoneno = phoneno;
this.password = password;
this.location = location;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getFname() {
return fname;
}
public void setFname(String fname) {
this.fname = fname;
}
public String getLname() {
return lname;
}
public void setLname(String lname) {
this.lname = lname;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public int getPhoneno() {
return phoneno;
}
public void setPhoneno(int phoneno) {
this.phoneno = phoneno;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getLocation() {
return location;
}
public void setLocation(String location) {
this.location = location;
}
@Override
public int hashCode() {
int hash = 0;
hash += (id != null ? id.hashCode() : 0);
return hash;
}
@Override
public boolean equals(Object object) {
// TODO: Warning - this method won't work in the case the id fields are not set
if (!(object instanceof Buyer)) {
return false;
}
Buyer other = (Buyer) object;
if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {
return false;
}
return true;
}
@Override
public String toString() {
return "entity.Buyer[ id=" + id + " ]";
}
}
Registration.java 应该为从 jsp 文件到 sql 数据库
的数据提供持久性import entity.Buyer;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.hibernate.*;
import org.hibernate.boot.registry.*;
import org.hibernate.cfg.Configuration;
import org.hibernate.metamodel.*;
public class Register extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Buyer buyerreg = new Buyer();
String email = request.getParameter("email");
String password = request.getParameter("password");
String username = request.getParameter("username");
String fname = request.getParameter("fname");
String lname = request.getParameter("lname");
String phone = request.getParameter("phoneno");
int phoneno = Integer.parseInt(phone);
String location = request.getParameter("location");
buyerreg.setEmail(email);
buyerreg.setPassword(password);
buyerreg.setFname(fname);
buyerreg.setLname(lname);
buyerreg.setUsername(username);
buyerreg.setPhoneno(phoneno);
buyerreg.setLocation(location);
Configuration configuration = new Configuration();
configuration.addAnnotatedClass(Buyer.class)
.configure();
StandardServiceRegistry ssr = new StandardServiceRegistryBuilder()
.applySettings(configuration.getProperties())
.configure("hibernate.cfg.xml")
.build();
Metadata meta = new MetadataSources(ssr).getMetadataBuilder().build();
SessionFactory factory;
factory = meta.getSessionFactoryBuilder().build();
Session session=factory.openSession();
Transaction t = session.beginTransaction();
session.persist(buyerreg);
t.commit();
session.close();
System.out.println("success");
response.sendRedirect("shop.jsp");
}
}
hibernate.cfg.xml 是我的休眠配置文件
<?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.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/mkulimaonline</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.show_sql">true</property>
<property name="hibernate.current_session_context_class">thread</property>
<property name="hibernate.query.factory_class">org.hibernate.hql.internal.classic.ClassicQueryTranslatorFactory</property>
<property name="hibernate.connection.autocommit">true</property>
<property name="hibernate.hbm2ddl.auto">create</property>
<mapping class="entity.Buyer" package="entity" resource="entity/Buyer.hbm.xml"/>
<property name="annotatedClasses"><list><value>entity.Buyer</value></list>
</property>
</session-factory>
</hibernate-configuration>
错误 正在浏览器上显示
message invalid configuration
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.hibernate.MappingException: invalid configuration
org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2158)
org.hibernate.cfg.Configuration.configure(Configuration.java:2075)
org.hibernate.cfg.Configuration.configure(Configuration.java:2054)
Register.doGet(Register.java:38)
javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
root cause
org.xml.sax.SAXParseException; lineNumber: 19; columnNumber: 45; Element type "list" must be declared.
com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:134)
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:396)
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:327)
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:284)
com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.handleStartElement(XMLDTDValidator.java:1906)
com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.startElement(XMLDTDValidator.java:742)
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:374)
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2784)
com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112)
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:842)
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:771)
com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:643)
org.dom4j.io.SAXReader.read(SAXReader.java:465)
org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2155)
org.hibernate.cfg.Configuration.configure(Configuration.java:2075)
org.hibernate.cfg.Configuration.configure(Configuration.java:2054)
Register.doGet(Register.java:38)
javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
如您的异常所述，XML 解析器 (SAXParseException) 存在问题。如果您看一下，在定义的 DTD 中，您可以检查元素下是否没有允许的元素。我认为您从 spring 配置中复制了一些内容。
如果您从 hibernate.cfg.xml 文件中删除这些行，将不会显示 SAXParseException：
<property name="annotatedClasses"><list><value>entity.Buyer</value></list>
</property>
我从 hibernate.cfg.xml 文件中删除了带注释的 class。我没有使用 Spring。但不知何故这奏效了 我不知道为什么这段代码不起作用 org.hibernate.MappingException：未知实体：entity.Buyer 这个错误仍然存在所以我评论了代码
SessionFactory factory;
StandardServiceRegistry ssr = new StandardServiceRegistryBuilder()
.applySettings(configuration.getProperties())
.configure("hibernate.cfg.xml")
.build();
Metadata meta = new MetadataSources(ssr).getMetadataBuilder().build();
factory = meta.getSessionFactoryBuilder().build();
Session session=factory.openSession();
Transaction t = session.beginTransaction();
session.persist(buyerreg);
t.commit();
session.close();
这是我用的
hibernate.cfg.config
<?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.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/mkulimaonline</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.show_sql">true</property>
<property name="hibernate.current_session_context_class">thread</property>
<property name="hibernate.query.factory_class">org.hibernate.hql.internal.classic.ClassicQueryTranslatorFactory</property>
<property name="hibernate.connection.autocommit">true</property>
<property name="hibernate.hbm2ddl.auto">update</property>
</session-factory>
</hibernate-configuration>
Registration.java 我评论了不起作用的代码，而这个替代方法不知何故起作用了
import entity.Buyer;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.hibernate.*;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.service.ServiceRegistryBuilder;
public class Register extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Buyer buyerreg = new Buyer();
String email = request.getParameter("email");
String password = request.getParameter("password");
String username = request.getParameter("username");
String fname = request.getParameter("fname");
String lname = request.getParameter("lname");
String phone = request.getParameter("phoneno");
int phoneno = Integer.parseInt(phone);
String location = request.getParameter("location");
buyerreg.setEmail(email);
buyerreg.setPassword(password);
buyerreg.setFname(fname);
buyerreg.setLname(lname);
buyerreg.setUsername(username);
buyerreg.setPhoneno(phoneno);
buyerreg.setLocation(location);
SessionFactory sessionFactory;
ServiceRegistry serviceRegistry;
Configuration configuration = new Configuration();
configuration.addAnnotatedClass(Buyer.class)
.addResource("entity/Buyer.hbm.xml")
.configure();
serviceRegistry = new ServiceRegistryBuilder()
.applySettings(configuration.getProperties())
.configure("hibernate.cfg.xml")
.build();
sessionFactory = configuration.buildSessionFactory(serviceRegistry);
Session session = sessionFactory.openSession();
session.beginTransaction();
session.persist(buyerreg);
session.getTransaction().commit();
session.close();
System.out.println("success");
response.sendRedirect("shop.jsp");
/*SessionFactory factory;
StandardServiceRegistry ssr = new StandardServiceRegistryBuilder()
.applySettings(configuration.getProperties())
.configure("hibernate.cfg.xml")
.build();
Metadata meta = new MetadataSources(ssr).getMetadataBuilder().build();
factory = meta.getSessionFactoryBuilder().build();
Session session=factory.openSession();
Transaction t = session.beginTransaction();
session.persist(buyerreg);
t.commit();
session.close();
*/
}
}
Buyer.java 我不得不使用数据库中自动生成的 java class ...我自己的创作有这个错误即使在使用 @Entity 注释 "org.hibernate.MappingException: Unknown entity: entity.Buyer"
之后/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package entity;
import java.io.Serializable;
import javax.persistence.Basic;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.xml.bind.annotation.XmlRootElement;
/**
*
* @author Tariana
*/
@Entity
@XmlRootElement
@NamedQueries({
@NamedQuery(name = "Buyer.findAll", query = "SELECT b FROM Buyer b")
, @NamedQuery(name = "Buyer.findById", query = "SELECT b FROM Buyer b WHERE b.id = :id")
, @NamedQuery(name = "Buyer.findByUsername", query = "SELECT b FROM Buyer b WHERE b.username = :username")
, @NamedQuery(name = "Buyer.findByFname", query = "SELECT b FROM Buyer b WHERE b.fname = :fname")
, @NamedQuery(name = "Buyer.findByLname", query = "SELECT b FROM Buyer b WHERE b.lname = :lname")
, @NamedQuery(name = "Buyer.findByEmail", query = "SELECT b FROM Buyer b WHERE b.email = :email")
, @NamedQuery(name = "Buyer.findByPhoneno", query = "SELECT b FROM Buyer b WHERE b.phoneno = :phoneno")
, @NamedQuery(name = "Buyer.findByPassword", query = "SELECT b FROM Buyer b WHERE b.password = :password")
, @NamedQuery(name = "Buyer.findByLocation", query = "SELECT b FROM Buyer b WHERE b.location = :location")})
public class Buyer implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Basic(optional = false)
private Integer id;
@Basic(optional = false)
private String username;
@Basic(optional = false)
private String fname;
@Basic(optional = false)
private String lname;
@Basic(optional = false)
private String email;
@Basic(optional = false)
private int phoneno;
@Basic(optional = false)
private String password;
@Basic(optional = false)
private String location;
public Buyer() {
}
public Buyer(Integer id) {
this.id = id;
}
public Buyer(Integer id, String username, String fname, String lname, String email, int phoneno, String password, String location) {
this.id = id;
this.username = username;
this.fname = fname;
this.lname = lname;
this.email = email;
this.phoneno = phoneno;
this.password = password;
this.location = location;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getFname() {
return fname;
}
public void setFname(String fname) {
this.fname = fname;
}
public String getLname() {
return lname;
}
public void setLname(String lname) {
this.lname = lname;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public int getPhoneno() {
return phoneno;
}
public void setPhoneno(int phoneno) {
this.phoneno = phoneno;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getLocation() {
return location;
}
public void setLocation(String location) {
this.location = location;
}
@Override
public int hashCode() {
int hash = 0;
hash += (id != null ? id.hashCode() : 0);
return hash;
}
@Override
public boolean equals(Object object) {
// TODO: Warning - this method won't work in the case the id fields are not set
if (!(object instanceof Buyer)) {
return false;
}
Buyer other = (Buyer) object;
if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {
return false;
}
return true;
}
@Override
public String toString() {
return "entity.Buyer[ id=" + id + " ]";
}
}
和Buyer.hbm.xml保持不变
<?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="entity.Buyer" table="buyer">
<id name="id" type="java.lang.Integer">
<column name="id" />
<generator class="identity" />
</id>
<property name="username" type="string">
<column name="username" length="25" not-null="true" unique="true" />
</property>
<property name="fname" type="string">
<column name="fname" length="20" not-null="true" />
</property>
<property name="lname" type="string">
<column name="lname" length="20" not-null="true" />
</property>
<property name="email" type="string">
<column name="email" length="50" not-null="true" unique="true" />
</property>
<property name="phoneno" type="int">
<column name="phoneno" not-null="true" unique="true" />
</property>
<property name="password" type="string">
<column name="password" length="30" not-null="true" />
</property>
<property name="location" type="string">
<column name="location" length="16" not-null="true" />
</property>
</class>
</hibernate-mapping>