问题：

初始化的SpringHibernate项目导致错误

韦宏扬

2023-03-14

我正在尝试为大学的一个项目和几个学生一起建立一个Springmvc应用程序，这是一本基于网络的烹饪书。

虽然Hello World工作正常，但我们使用hibernate存储数据的代码出现了一些困难的异常。

域类：

/**
 * POJO which represents a Recipe.
 * @author Nils Sommer
 *
 */
@Entity
@Table(name="recipes")
public class Recipe implements Serializable {

private static final long serialVersionUID = 3239162951065313443L; // generated by       eclipse

@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private int id;

@Column(name="title")
private String title;

@Column(name="description")
private String description;

@Column(name="content")
private String content;

@Column(name="preparation_endurance")
private int preparationEndurance;

@Column(name="total_endurance")
private int totalEndurance;

@Column(name="creation")
private Date creation;

private List<Image> images;
private List<Rating> ratings;

// ----- Getters and setters here: -----

}

服务类：

@Service("recipeService")
@Transactional
public class RecipeService {

protected static Logger logger = Logger.getLogger("service");

@Resource(name="sessionFactory")
private SessionFactory sessionFactory;

public Recipe getRecipe(int id) {
    logger.debug("Retrieving person with id: " + id);

    // Retrieve session from Hibernate
    Session session = sessionFactory.getCurrentSession();

    // Get recipe
    Recipe recipe = (Recipe) session.get(Recipe.class, id);

    // Retrieve recipe
    return recipe;
}

public List<Recipe> getAll() {
    logger.debug("Retrieving all persons");

    // Retrieve session from Hibernate
    Session session = sessionFactory.getCurrentSession();

    // Create a Hibernate query (HQL)
    Query query = session.createQuery("FROM  Person");

    // Retrieve all
    return  query.list();
}

public void add(String title, String description, String content,
        int preparationEndurance, int totalEndurance, Date creation) {
    logger.debug("Adding new person");

    // Retrieve session from Hibernate
    Session session = sessionFactory.getCurrentSession();

    // Create a new Recipe
    Recipe recipe = new Recipe();
    recipe.setTitle(title);
    recipe.setDescription(description);
    recipe.setContent(content);
    recipe.setPreparationEndurance(preparationEndurance);
    recipe.setTotalEndurance(totalEndurance);
    recipe.setCreation(creation);

    // Save
    session.save(recipe);
}

public void delete(Integer id) {
    logger.debug("Deleting existing person");

    // Retrieve session from Hibernate
    Session session = sessionFactory.getCurrentSession();

    // Retrieve existing recipe first
    Recipe person = (Recipe) session.get(Recipe.class, id);

    // Delete 
    session.delete(person);
}

public void edit(Integer id, String title, String description, String content,
        int preparationEndurance, int totalEndurance, Date creation) {
    logger.debug("Editing existing person");

    // Retrieve session from Hibernate
    Session session = sessionFactory.getCurrentSession();

    // Retrieve existing recipe via id
    Recipe recipe = (Recipe) session.get(Recipe.class, id);

    // Assign updated values to this recipe
    recipe.setTitle(title);
    recipe.setDescription(description);
    recipe.setContent(content);
    recipe.setPreparationEndurance(preparationEndurance);
    recipe.setTotalEndurance(totalEndurance);
    recipe.setCreation(creation);

    // Save updates
    session.save(recipe);
}
 }

控制器类：

package org.cookbookgeeks.webkochbuch.web;

/**
 * @author Nils Sommer
 * 
 * This is the Controller which processes all recipe requests.
 */
@Controller
public class RecipeController {

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

@Resource(name="recipeService")
private RecipeService recipeService;

/**
 * Shows a recipe.
 * @param id of the recipe which wil be shown.
 * @return the view recipe.jsp
 */
@RequestMapping(method=RequestMethod.GET, value="/recipe/{id}")
public String showRecipe(@PathVariable("id") int id, Model model) {
    logger.debug("Returning view recipe with recipe.id=" + id);

    // Get recipe.
    Recipe recipe = recipeService.getRecipe(id);

    model.addAttribute("recipe", recipe);
    return "recipe";
}

/**
 * Adds a recipe and shows it afterwards.
 * @param recipe which is added.
 * @return the view recipe with the id of the created recipe.
 */
@RequestMapping(method=RequestMethod.POST, value="/recipe/add")
public String addRecipe(@ModelAttribute("recipe") Recipe recipe) {
    //TODO: create recipe from post parameter   
    return "/recipe/" + recipe.getId();
}

/**
 * Deletes a recipe and redirects to the start page.
 * @param id of the recipe which gets deleted.
 * @return the view of the start page.
 */
@RequestMapping(method=RequestMethod.GET, value="/recipe/delete/{id}")
public String deleteRecipe(@PathVariable("id") int id) {
    //TODO: delete recipe.
    return "/";
}

/**
 * Edits a recipe and show it afterwards.
 * @param recipe which gets edited.
 * @return the view recipe with the id of the recipe.
 */
@RequestMapping(method=RequestMethod.POST, value="/recipe/edit")
public String editRecipe(@ModelAttribute("recipe") Recipe recipe) {
    //TODO: edit recipe.
    return "/recipe/" + recipe.getId();
}

}

我们使用基于eclipse的Spring工具包sdk并在启动过程中获得以下异常：

HTTP Status 500 - Servlet.init() for servlet appServlet threw exception

type Exception report

message Servlet.init() for servlet appServlet threw exception

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

exception

javax.servlet.ServletException: Servlet.init() for servlet appServlet threw exception
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    java.lang.Thread.run(Thread.java:744)
root cause

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'recipeController': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'recipeService' is defined
    org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:306)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1116)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
    org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
    org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:628)
    org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
    org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:651)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:599)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:665)
    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:518)
    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:459)
    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    javax.servlet.GenericServlet.init(GenericServlet.java:160)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    java.lang.Thread.run(Thread.java:744)
root cause

org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'recipeService' is defined
    org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:570)
    org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1108)
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:278)
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:198)
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:270)
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:198)
    org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:442)
    org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:416)
    org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:550)
    org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:150)
    org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
    org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:303)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1116)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
    org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
    org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:628)
    org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
    org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:651)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:599)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:665)
    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:518)
    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:459)
    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    javax.servlet.GenericServlet.init(GenericServlet.java:160)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    java.lang.Thread.run(Thread.java:744)
note The full stack trace of the root cause is available in the VMware vFabric tc Runtime 2.9.3.RELEASE/7.0.42.A.RELEASE logs.

VMware vFabric tc Runtime 2.9.3.Release/7.0.42.A.Release

似乎在控制器类中的配方服务存在问题...

编辑：web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

<!-- The definition of the Root Spring Container shared by all Servlets and Filters -->
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/spring/root-context.xml</param-value>
</context-param>

<!-- Creates the Spring Container shared by all Servlets and Filters -->
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!-- Processes application requests -->
<servlet>
    <servlet-name>appServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>appServlet</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

</web-app>

SRC/main/Resources/META-INF/app-context.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xsi:schemaLocation="
    http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

<context:component-scan base-package="org.cookbookgeeks.webkochbuch" />

</beans>

src/main/WEB app/we b-INF/application context . XML

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

<!-- Activates various annotations to be detected in bean classes -->
<context:annotation-config />

<!-- Scans the classpath for annotated components that will be auto-registered as Spring beans.
 For example @Controller and @Service. Make sure to set the correct base-package-->
<context:component-scan base-package="org.cookbookgeeks.webkochbuch" />

<!-- Configures the annotation-driven Spring MVC Controller programming model.
Note that, with Spring 3.0, this tag works in Servlet MVC only!  -->
<mvc:annotation-driven /> 

<import resource="hibernate-context.xml" />

</beans>

src/main/webapp/WEB-INF/spring/appServlet/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/" />

<!-- 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="org.cookbookgeeks.webkochbuch.web" />

</beans:beans>

共有2个答案

葛智敏

2023-03-14

您是否在使用

陈高寒

2023-03-14

问题是你有很多Spring上下文文件，你没有加载正确的文件。您有一个根上下文.xml从Web定义和加载.xml（我建议不要这样做，即使使用XML配置;如果必须，请使用从特定上下文XML导入）。然后，对于您的 servlet，您正在加载 servlet 上下文.xml，它只是扫描您的 Web 包的组件。您需要在Web中指向Spring的上下文.xml来扫描基本包;这些应用程序上下文.xml和应用程序上下文.xml文件实际上并没有在任何地方加载。

我现在的建议是尽可能避免XML配置，而支持JavaConfig系统；我的整个应用程序只有一个主入口点@Configuration类，然后组件会扫描任何其他@Configurations。

初始化的SpringHibernate项目导致错误

共有2个答案

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