Question

我是Hibernate和Spring的新手，我在执行应用程序时遇到上述异常。

我正在尝试从数据库中获取记录的值。

以下是我得到的例外情况： -

message Request processing failed; nested exception is org.hibernate.HibernateException: /hibernate.cfg.xml not found

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.hibernate.HibernateException: /hibernate.cfg.xml not found
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:894)
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
root cause

org.hibernate.HibernateException: /hibernate.cfg.xml not found
    org.hibernate.util.ConfigHelper.getResourceAsStream(ConfigHelper.java:170)
    org.hibernate.cfg.Configuration.getConfigurationInputStream(Configuration.java:1497)
    org.hibernate.cfg.Configuration.configure(Configuration.java:1519)
    org.hibernate.cfg.Configuration.configure(Configuration.java:1506)
    com.me.app.HomeController.handleRequestInternal(HomeController.java:56)
    org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
    org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.34 logs.

以下是我的档案： -

POJO

public class Usertable {

    int id;
    String userName;
    String password;



    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getUserName() {
        return userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }



}

控制器

//@Controller
public class HomeController extends AbstractController{

    //private static final Logger logger = LoggerFactory.getLogger(HomeController.class);

    /**
     * Simply selects the home view to render by returning its name.
     */
//  @RequestMapping(value = "/", method = RequestMethod.GET)
//  public String home(Locale locale, Model model) {
//      logger.info("Welcome home! The client locale is {}.", locale);
//      
//      Date date = new Date();
//      DateFormat dateFormat = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, locale);
//      
//      String formattedDate = dateFormat.format(date);
//      
//      model.addAttribute("serverTime", formattedDate );
//      
//      return "home";
//  }

    @Override
    protected ModelAndView handleRequestInternal(HttpServletRequest request,
            HttpServletResponse response) throws Exception {
        String userName = request.getParameter("userName");
        String password = request.getParameter("password");
        Usertable user;

        Configuration cfg = new Configuration();
        SessionFactory sf = cfg.configure().buildSessionFactory();
        Session hibsession = sf.openSession();





        Transaction tx = hibsession.beginTransaction();
        user = (Usertable)hibsession.get(Usertable.class, userName);

        System.out.println("UserName is "+ user.getUserName());
        System.out.println("Password is "+ user.getPassword());


        tx.commit();



        hibsession.close();

        return new ModelAndView("first","abc","abc");
    }

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">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.password">tiger</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/contacts</property>
        <property name="hibernate.connection.username">root</property>

        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>

        <mapping resource="Usertable.hbm.xml"/>
    </session-factory>
</hibernate-configuration>

Usertable.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 20 Mar, 2013 4:26:30 AM by Hibernate Tools 3.4.0.CR1 -->
<hibernate-mapping>
    <class name="com.me.app.Usertable" table="USERTABLE">
        <id name="id" type="java.lang.Integer">
            <column name="UserID" />
            <generator class="native" />
        </id>
        <property name="userName" type="java.lang.String">
            <column name="UserName" />
        </property>
        <property name="password" type="java.lang.String">
            <column name="UserPassword" />
        </property>
    </class>
</hibernate-mapping>

servlet-context.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:beans="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
    <!-- Enables the Spring MVC @Controller programming model -->
    <annotation-driven />
    <!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
    <!--  <resources mapping="/resources/**" location="/resources/" /> -->

    <beans:bean id="urlMapping" class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" />

    <beans:bean name="/books.htm" class="com.me.app.HomeController" />




    <!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
    <beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <beans:property name="prefix" value="/WEB-INF/views/" />
        <beans:property name="suffix" value=".jsp" />
    </beans:bean>

    <context:component-scan base-package="com.me.app" />



</beans:beans>

请帮我解决这个问题。谢谢。！

Answer 1

问题是你不应该在你的请求句柄中实例化你的hibernate配置，而是让spring实例化你的session factory并将其注入你的控制器并从那里检索会话。这样做，您就不必为每个对应用程序发出的请求实现会话工厂。

您可以查看此question或官方文档，详细了解如何通过spring实例化会话工厂。

这将（间接）解决您的问题。

Answer 2

benzonico 和 KHY 感谢您的投入。我正在做的第一个错误是我将hibernate.cfg.xml放在src / main / java / com / me / app /中，它应该是src / main / java /。这对我有用。关于TypedMismatch的下一部分是

user = (Usertable)hibsession.get(Usertable.class, userName);

我试图从实际上是Integer的数据库中获取String引用。这样就解决了typedMismatchException。

我一定会尝试通过spring将会话工厂注入我的代码中。由于我是这个框架的新手，因此在与您讨论并尝试新代码时学到了很多负担。

再次感谢您的宝贵意见。

HTTP状态500 - 请求处理失败;嵌套异常是org.hibernate.HibernateException：/hibernate.cfg.xml未找到

2 个答案: