Java 弹簧&x2B;冬眠。创建bean时出错。不满意的依赖。无法找出哪个批注不正确
我已经浏览了关于这个话题的每一篇文章,但我仍然找不到哪里不对。当我尝试运行服务器时,出现以下异常: org.springframework.beans.factory.unsatifiedDependencyException: 创建名为“administratorDAO”的bean时出错:不满意 通过方法“setDao”参数0表示的依赖项:否 限定类型为[com.project.dataAccessLayer.DataAccessObject]的bean 找到依赖项[com.project.dataAccessLayer.DataAccessObject]: 至少需要1个符合以下条件的bean:autowire候选 这种依赖性。依赖项注释:{};嵌套异常是 org.springframework.beans.factory.noSuchBean定义异常:否 限定类型为[com.project.dataAccessLayer.DataAccessObject]的bean 找到依赖项[com.project.dataAccessLayer.DataAccessObject]: 至少需要1个符合以下条件的bean:autowire候选 这种依赖性。依赖项批注:{} 它说我没有DataAccessObject的bean,即使它是用@Repository注释的,或者在servlet-context.xml中定义的 我有一个CustomerDAO和一个扩展CustomerDAO的AdministratorDAO。我将只发布客户部分,因为我认为如果我能做到这一点,管理员部分将跟进Java 弹簧&x2B;冬眠。创建bean时出错。不满意的依赖。无法找出哪个批注不正确,java,spring,hibernate,spring-mvc,Java,Spring,Hibernate,Spring Mvc,我已经浏览了关于这个话题的每一篇文章,但我仍然找不到哪里不对。当我尝试运行服务器时,出现以下异常: org.springframework.beans.factory.unsatifiedDependencyException: 创建名为“administratorDAO”的bean时出错:不满意 通过方法“setDao”参数0表示的依赖项:否 限定类型为[com.project.dataAccessLayer.DataAccessObject]的bean 找到依赖项[com.project.d
DataAccessObject class
package com.project.dataAccessLayer;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Restrictions;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Repository;
import com.project.model.Account;
import com.project.model.ModelEntity;
import com.project.model.Product;
@Repository("dao")
public class DataAccessObject {
private SessionFactory sessionFactory;
private Session session;
@Autowired
@Qualifier("sessionFactory")
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
public ModelEntity save(ModelEntity modelEntity) {
Integer id = null;
try {
session = sessionFactory.openSession();
session.beginTransaction();
id = (Integer) session.save(modelEntity);
if (id != null) {
modelEntity.setId(id);
}
session.getTransaction().commit();
session.close();
} catch (Exception e) {
this.update(modelEntity);
}
return modelEntity;
}
public void update(ModelEntity modelEntity) {
try {
session = sessionFactory.openSession();
session.beginTransaction();
session.update(modelEntity);
session.getTransaction().commit();
} catch (Exception e) {
e.printStackTrace();
} finally {
session.close();
}
}
@SuppressWarnings("unchecked")
public List<Product> getProducts() {
List<Product> list = null;
try {
session = sessionFactory.openSession();
session.beginTransaction();
list = session.createCriteria(Product.class).list();
session.getTransaction().commit();
} catch (Exception e) {
e.printStackTrace();
} finally {
session.close();
}
return list;
}
@SuppressWarnings("unchecked")
public List<Account> getAccounts() {
List<Account> list = null;
try {
session = sessionFactory.openSession();
session.beginTransaction();
list = session.createCriteria(Account.class).list();
session.getTransaction().commit();
} catch (Exception e) {
e.printStackTrace();
} finally {
session.close();
}
return list;
}
@SuppressWarnings("unchecked")
public List<Product> getProductByName(String brand, String model) {
List<Product> list = null;
try {
session = sessionFactory.openSession();
session.beginTransaction();
list = session.createCriteria(Product.class).add(Restrictions.eq("brand", brand))
.add(Restrictions.eq("model", model)).list();
session.getTransaction().commit();
} catch (Exception e) {
e.printStackTrace();
} finally {
session.close();
}
return list;
}
@SuppressWarnings("unchecked")
public List<Account> getAccountByUsername(String username) {
List<Account> list = null;
try {
session = sessionFactory.openSession();
session.beginTransaction();
list = session.createCriteria(Account.class).add(Restrictions.eq("username", username)).list();
session.getTransaction().commit();
} catch (Exception e) {
e.printStackTrace();
} finally {
session.close();
}
return list;
}
public void delete(ModelEntity modelEntity) {
try {
session = sessionFactory.openSession();
session.beginTransaction();
session.delete(modelEntity);
session.getTransaction().commit();
session.clear();
} catch (Exception e) {
e.printStackTrace();
} finally {
session.close();
}
}
public SessionFactory getSessionFactory() {
return sessionFactory;
}
}
DataAccessObject类
包com.project.dataAccessLayer;
导入java.util.List;
导入org.hibernate.Session;
导入org.hibernate.SessionFactory;
导入org.hibernate.criteria.Restrictions;
导入org.springframework.beans.factory.annotation.Autowired;
导入org.springframework.beans.factory.annotation.Qualifier;
导入org.springframework.stereotype.Repository;
导入com.project.model.Account;
导入com.project.model.ModelEntity;
导入com.project.model.Product;
@存储库(“dao”)
公共类DataAccessObject{
私人会话工厂会话工厂;
非公开会议;
@自动连线
@限定符(“会话工厂”)
public void setSessionFactory(SessionFactory SessionFactory){
this.sessionFactory=sessionFactory;
}
公共模型实体保存(模型实体模型实体){
整数id=null;
试一试{
session=sessionFactory.openSession();
session.beginTransaction();
id=(整数)session.save(modeleentity);
如果(id!=null){
modeleentity.setId(id);
}
session.getTransaction().commit();
session.close();
}捕获(例外e){
更新(模型实体);
}
返回模型实体;
}
公共无效更新(模型实体模型实体){
试一试{
session=sessionFactory.openSession();
session.beginTransaction();
更新(模型实体);
session.getTransaction().commit();
}捕获(例外e){
e、 printStackTrace();
}最后{
session.close();
}
}
@抑制警告(“未选中”)
公共列表产品(){
List=null;
试一试{
session=sessionFactory.openSession();
session.beginTransaction();
list=session.createCriteria(Product.class.list();
session.getTransaction().commit();
}捕获(例外e){
e、 printStackTrace();
}最后{
session.close();
}
退货清单;
}
@抑制警告(“未选中”)
公共列表您希望在CustomerDAO
中有一个带有@Qualifier(“custDAO”)
的依赖项DataAccessObject
bean,但是没有@Qualifier(“custDAO”)
换句话说,问题是因为@限定符(“custDAO”)
,即Spring
容器无法将DataAccessObject
bean注入CustomerDAO
(因为预期的@限定符没有可用的bean),因此您需要更改DataAccessObject
,如下所示:
@Repository
@Qualifier("custDAO")
public class DataAccessObject {
//current code
}
您可以在@Qualifier
上查找更多信息。您希望@Qualifier(“custDAO”)
中有一个依赖项DataAccessObject
bean和@Qualifier(“custDAO”)
,但是没有DataAccessObject
bean可用于@Qualifier(“custDAO”)
换句话说,问题是因为@限定符(“custDAO”)
,即Spring
容器无法将DataAccessObject
bean注入CustomerDAO
(因为预期的@限定符没有可用的bean),因此您需要更改DataAccessObject
,如下所示:
@Repository
@Qualifier("custDAO")
public class DataAccessObject {
//current code
}
你可以在@Qualifier
上查找更多信息。你应该仔细分离文件的内容,设置格式。我刚刚编辑完这篇文章,现在它是可读的,很抱歉,你应该仔细分离文件的内容,设置格式。我刚刚编辑完这篇文章,现在它是可读的,很抱歉,我还有一个带有@Repository(“administratorDAO”)公共类administratorDAO扩展CustomerDAO实现IAdministratorDAO{DataAccessObject dao;@Autowired@Qualifier(“adminDAO”)public void setDao(DataAccessObject dao){this.dao=dao;}所以我添加了那个限定符,因为另一个错误说我有两个“dao”如果我这样做了,我将如何在AdministratorDAO中使用DataAccessObject?确保在任何有setter注入(或注入)限定符的地方,都有一个用限定符注释的具体类(实现)。在DataAccessObject@Qualifier(“dao”)上添加一个限定符在CustomerDAO和AdministratorDAO中使用它(在这里我使用带有@Autowired注释的限定符(“dao”)将生成另一个异常org.spri
package com.project.controller;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import com.project.model.Account;
import com.project.model.Product;
import com.project.services.CustomerService;
import com.project.services.ICustomerService;
@Controller("customerCOntroller")
@RequestMapping("/")
public class CustomerController {
ICustomerService customerService;
@Autowired(required = true)
@Qualifier(value="customerService")
public void setCustomerService(CustomerService cs){
this.customerService = cs;
}
@RequestMapping(value = "/account", method = RequestMethod.GET)
public ModelAndView showForm() {
return new ModelAndView("account", "account", new Account());
}
@RequestMapping(value = "/signUp", method = RequestMethod.POST)
public String signUp(@ModelAttribute("account") Account acc) throws Exception {
this.customerService.signUp(acc.getFullName(), acc.getUsername(), acc.getPassword(), acc.geteMail(),
acc.getAddress(), acc.getPermission());
return "redirect:/logIn";
}
@RequestMapping(value = "/logIn", method = RequestMethod.POST)
public String logIn(@ModelAttribute("account") Account acc) throws Exception {
this.customerService.logIn(acc.getUsername(), acc.getPassword());
return "redirect:/products";
}
@RequestMapping(value = "/logOut", method = RequestMethod.POST)
public String logOut(@ModelAttribute("account") Account acc) throws Exception {
this.customerService.logOut(acc.getId());
return "redirect:/logIn";
}
@RequestMapping(value="/changePassword/{newPassword}", method = RequestMethod.POST)
public String changePassword(@ModelAttribute("account") Account acc,
@PathVariable("newPassword") String newPassword) throws Exception {
this.customerService.changePassword(acc.getUsername(), acc.getPassword(), newPassword);
return "redirect:/logIn";
}
@RequestMapping(value = "/products", method = RequestMethod.GET)
public ModelAndView showProducts() {
List<Product> productList = this.customerService.showAllProducts();
return new ModelAndView("products", "productList", productList);
}
}
<....>``
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/root-context.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<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/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>
<?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"
xsi:schemaLocation="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">
</beans>
<?xml ....">
<beans:bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<beans:property name="prefix" value="/WEB-INF/jsp/" />
<beans:property name="suffix" value=".jsp" />
</beans:bean>
<context:component-scan base-package="com.project" />
<!-- 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="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<beans:property name="driverClassName" value="com.mysql.jdbc.Driver" />
<beans:property name="url"
value="jdbc:mysql://localhost:3306/guitarshop" />
<beans:property name="username" value="root" />
<beans:property name="password" value="" />
</beans:bean>
<beans:bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<beans:property name="annotatedClasses">
<beans:list>
<beans:value>com.project.model.Account</beans:value>
<beans:value>com.project.model.Product</beans:value>
</beans:list>
</beans:property>
<beans:property name="hibernateProperties">
<beans:props>
<beans:prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect
</beans:prop>
<beans:prop key="hibernate.show_sql">true</beans:prop>
<beans:prop key="hibernate.enable_lazy_load_no_trans">true</beans:prop>
</beans:props>
</beans:property>
</beans:bean>
<!-- <beans:bean id="dao" -->
<!-- class="com.project.dataAccessLayer.DataAccessObject"> -->
<!-- <beans:property name="sessionFactory" ref="sessionFactory" /> -->
<!-- </beans:bean> -->
<!-- <beans:bean id="customerDAO" class="com.project.dataAccessLayer.CustomerDAO"> -->
<!-- <beans:property name="dao" ref="dao" /> -->
<!-- </beans:bean> -->
<!-- <beans:bean id="administratorDAO" -->
<!-- class="com.project.dataAccessLayer.AdministratorDAO"> -->
<!-- <beans:property name="dao" ref="dao" /> -->
<!-- </beans:bean> -->
<!-- <beans:bean id="customerService" class="com.project.services.CustomerService"> -->
<!-- <beans:property name="customerDAO" ref="customerDAO"></beans:property> -->
<!-- </beans:bean> -->
<!-- <beans:bean id="administratorService" class="com.project.services.AdministratorService"> -->
<!-- <beans:property name="administratorDAO" ref="administratorDAO"></beans:property> -->
<!-- </beans:bean> -->
<tx:annotation-driven transaction-manager="transactionManager" />
<beans:bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<beans:property name="sessionFactory"
ref="sessionFactory" />
</beans:bean>
</beans:beans>
@Repository
@Qualifier("custDAO")
public class DataAccessObject {
//current code
}