spring - Spring Autowire 错误预计至少有 1 个 bean 有资格作为此依赖项的自动装配候选者

Question

我正在尝试在这个项目中自动装配 bean，但不断出错

预计至少有 1 个 bean 有资格作为此依赖项的自动装配候选者。依赖注解：{@org.springframework.beans.factory.annotation.Autowired(required=true)"

爪哇：

@Controller
@RequestMapping(value="/Home")
public class HomeController {

@Autowired
private Personrepo personRepo;

@RequestMapping(method=RequestMethod.GET)
public String showForm(ModelMap model){
    List<Person> persons = personRepo.getAll();
    model.addAttribute("persons", persons);
    Person person = new Person();
    model.addAttribute("person", person);
    return "home";
}


@RequestMapping(value="/add", method=RequestMethod.POST)
public ModelAndView add(@ModelAttribute(value="person") Person person,BindingResult result){

    ModelAndView mv = new ModelAndView("home");
    if(!result.hasErrors()){
        personRepo.add(person);
        person = new Person();
        mv.addObject("person", person);
    }
    mv.addObject("persons", personRepo.getAll());
    return mv;
}


@RequestMapping(value="/edit", method=RequestMethod.POST)
public ModelAndView edit(@ModelAttribute(value="person") Person person,BindingResult result){

    ModelAndView mv = new ModelAndView("home");
    if(!result.hasErrors()){
        personRepo.edit(person);
        person = new Person();

        mv.addObject("person", person);
    }
    mv.addObject("persons", personRepo.getAll());
    return mv;
}
@RequestMapping(value="/delete", method=RequestMethod.POST)
public ModelAndView update(@ModelAttribute(value="person") Person person,BindingResult result){
    ModelAndView mv = new ModelAndView("home");
    if(!result.hasErrors()){
    personRepo.delete(person.getId());

        //personRepo.delete(person);
        person = new Person();

        mv.addObject("person", person);
    }
    mv.addObject("persons", personRepo.getAll());
    return mv;
}


}

人

package com.app.domain;

import java.io.Serializable;

/**
* A simple POJO representing a Person
*/
 public class Person implements Serializable {

private static final long serialVersionUID = -5527566248002296042L;

private String id;
private String firstName;
private String lastName;
private Double money;

public String getId() {
    return id;
}

public void setId(String id) {
    this.id = id;
}

public String getFirstName() {
    return firstName;
}

public void setFirstName(String firstName) {
    this.firstName = firstName;
}

public String getLastName() {
    return lastName;
}

public void setLastName(String lastName) {
    this.lastName = lastName;
}

public Double getMoney() {
    return money;
}

public void setMoney(Double money) {
    this.money = money;
}

}

个人回购

package com.app.r;

import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.app.service.PersonService;
import com.app.domain.Person;


public interface Personrepo {

public void add(Person person);
public void edit(Person person);
public void delete(String id);
public List<Person> getAll();
}

人员服务

 package com.app.service;

 import java.sql.ResultSet;  
import java.sql.SQLException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.annotation.Resource;
import javax.sql.DataSource;

import org.apache.log4j.Logger;
import com.app.domain.Person;


import org.springframework.jdbc.core.RowMapper;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;



@Component
@Transactional
public class PersonService {

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

private JdbcTemplate jdbcTemplate;

@Resource(name="dataSource")
public void setDataSource(DataSource dataSource) {
    this.jdbcTemplate = new JdbcTemplate(dataSource);
}

/**
 * Retrieves all persons
 * 
 * @return a list of persons
 */
public List<Person> getAll() {
    logger.debug("Retrieving all persons");

    // Prepare our SQL statement
    String sql = "select id, first_name, last_name, money from person";

    // Maps a SQL result to a Java object
    RowMapper<Person> mapper = new RowMapper<Person>() {  
        public Person mapRow(ResultSet rs, int rowNum) throws SQLException {
            Person person = new Person();
            person.setId(rs.getString("id"));
            person.setFirstName(rs.getString("first_name"));
            person.setLastName(rs.getString("last_name"));
            person.setMoney(rs.getDouble("money"));
            return person;
        }
    };

    // Retrieve all
    return jdbcTemplate.query(sql, mapper);
}

/**
 * Adds a new person
 * 
 * @param firstName the first name of the person
 * @param lastName the last name of the person
 * @param money the money of the person
 */
public void add(String firstName, String lastName, Double money) {
    logger.debug("Adding new person");

    // Prepare our SQL statement using Named Parameters style
    String sql = "insert into person(first_name, last_name, money) values " +
            "(:firstName, :lastName, :money)";

    // Assign values to parameters
    Map<String, Object> parameters = new HashMap<String, Object>();
    parameters.put("firstName", firstName);
    parameters.put("lastName", lastName);
    parameters.put("money", money);

    // Save
    jdbcTemplate.update(sql, parameters);
}





/**
 * Deletes an existing person
 * @param id the id of the existing person
 */
public void delete(String id) {
    logger.debug("Deleting existing person");

    // Prepare our SQL statement using Unnamed Parameters style
    String sql = "delete from person where id = ?";

    // Assign values to parameters
    Object[] parameters = new Object[] {id};

    // Delete
    jdbcTemplate.update(sql, parameters);
}

/**
 * Edits an existing person
 * @param id the id of the existing person
 * @param firstName the first name of the existing person
 * @param lastName the last name of the existing person
 * @param money the money of the existing person
 */
public void edit(String id, String firstName, String lastName, Double money) {
    logger.debug("Editing existing person");

    // Prepare our SQL statement
    String sql = "update person set first_name = :firstName, " +
            "last_name = :lastName, money = :money where id = :id";

    // Assign values to parameters
    Map<String, Object> parameters = new HashMap<String, Object>();
    parameters.put("id", id);
    parameters.put("firstName", firstName);
    parameters.put("lastName", lastName);
    parameters.put("money", money);

    // Edit
    jdbcTemplate.update(sql, parameters);

}
 }

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 />


<!-- 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>

<!-- 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-->





</beans:beans>

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">



<!-- Creates the Spring Container shared by all Servlets and Filters -->


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

org.springframework.web.context.ContextLoaderListener

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

错误控制台

INFO : org.springframework.web.servlet.DispatcherServlet - FrameworkServlet 'servlet': initialization started
INFO : org.springframework.web.context.support.XmlWebApplicationContext - Refreshing WebApplicationContext for namespace 'servlet-servlet': startup date [Wed May 08 15:59:09 BST 2013]; root of context hierarchy
INFO : org.springframework.beans.factory.xml.XmlBeanDefinitionReader - Loading XML bean definitions from ServletContext resource [/WEB-INF/servlet-context.xml]
INFO : org.springframework.context.annotation.ClassPathBeanDefinitionScanner - JSR-330 'javax.inject.Named' annotation found and supported for component scanning
INFO : org.springframework.context.annotation.ClassPathBeanDefinitionScanner - JSR-330 'javax.inject.Named' annotation found and supported for component scanning
INFO : org.springframework.context.annotation.ClassPathBeanDefinitionScanner - JSR-330 'javax.inject.Named' annotation found and supported for component scanning
INFO : org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor - JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
INFO : org.springframework.beans.factory.support.DefaultListableBeanFactory - Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@426b51d8: defining beans [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping#0,org.springframework.format.support.FormattingConversionServiceFactoryBean#0,org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter#0,org.springframework.web.servlet.handler.MappedInterceptor#0,org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver#0,org.springframework.web.servlet.mvc.annotation.ResponseStatusExceptionResolver#0,org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver#0,org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping,org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter,org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter,org.springframework.web.servlet.view.InternalResourceViewResolver#0,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,homeController,personService,org.springframework.context.annotation.ConfigurationClassPostProcessor$ImportAwareBeanPostProcessor#0]; root of factory hierarchy
INFO : org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - Mapped "{[/Home/add],methods=[POST],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto public org.springframework.web.servlet.ModelAndView com.app.a.HomeController.add(com.app.domain.Person,org.springframework.validation.BindingResult)
INFO : org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - Mapped "{[/Home/delete],methods=[POST],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto public org.springframework.web.servlet.ModelAndView com.app.a.HomeController.update(com.app.domain.Person,org.springframework.validation.BindingResult)
INFO : org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - Mapped "{[/Home],methods=[GET],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto public java.lang.String com.app.a.HomeController.showForm(org.springframework.ui.ModelMap)
INFO : org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - Mapped "{[/Home/edit],methods=[POST],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto public org.springframework.web.servlet.ModelAndView com.app.a.HomeController.edit(com.app.domain.Person,org.springframework.validation.BindingResult)
INFO : org.springframework.beans.factory.support.DefaultListableBeanFactory - Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@426b51d8: defining beans [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping#0,org.springframework.format.support.FormattingConversionServiceFactoryBean#0,org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter#0,org.springframework.web.servlet.handler.MappedInterceptor#0,org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver#0,org.springframework.web.servlet.mvc.annotation.ResponseStatusExceptionResolver#0,org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver#0,org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping,org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter,org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter,org.springframework.web.servlet.view.InternalResourceViewResolver#0,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,homeController,personService,org.springframework.context.annotation.ConfigurationClassPostProcessor$ImportAwareBeanPostProcessor#0]; root of factory hierarchy
ERROR: org.springframework.web.servlet.DispatcherServlet - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'homeController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.app.r.Personrepo com.app.a.HomeController.personRepo; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.app.r.Personrepo] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:287)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:631)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:588)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:645)
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:508)
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:449)
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:133)
    at javax.servlet.GenericServlet.init(GenericServlet.java:160)
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1266)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1185)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1080)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5027)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5314)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.app.r.Personrepo com.app.a.HomeController.personRepo; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.app.r.Personrepo] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:506)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:284)
    ... 30 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.app.r.Personrepo] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:924)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:793)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:707)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:478)
    ... 32 more
May 8, 2013 3:59:10 PM org.apache.catalina.core.ApplicationContext log
SEVERE: StandardWrapper.Throwable
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'homeController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.app.r.Personrepo com.app.a.HomeController.personRepo; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.app.r.Personrepo] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

PersonService 类更新与实现

package com.app.service;

@Component
public class PersonService implements Personrepo {

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

private JdbcTemplate jdbcTemplate;

@Resource(name="dataSource")
public void setDataSource(DataSource dataSource) {
    this.jdbcTemplate = new JdbcTemplate(dataSource);
}

/**
 * Retrieves all persons
 * 
 * @return a list of persons
 */
public List<Person> getAll() {
    logger.debug("Retrieving all persons");



    // Prepare our SQL statement
    String sql = "select id, first_name, last_name, money from person";



    // Maps a SQL result to a Java object
    RowMapper<Person> mapper = new RowMapper<Person>() {  
        public Person mapRow(ResultSet rs, int rowNum) throws SQLException {
            Person person = new Person();
            person.setId(rs.getString("id"));
            person.setFirstName(rs.getString("first_name"));
            person.setLastName(rs.getString("last_name"));
            person.setMoney(rs.getDouble("money"));
            return person;
        }
    };

    // Retrieve all
    return jdbcTemplate.query(sql, mapper);
}

/**
 * Adds a new person
 * 
 * @param firstName the first name of the person
 * @param lastName the last name of the person
 * @param money the money of the person
 */
public void add(String firstName, String lastName, Double money) {
    logger.debug("Adding new person");

    // Prepare our SQL statement using Named Parameters style
    String sql = "insert into person(first_name, last_name, money) values " +
            "(:firstName, :lastName, :money)";

    // Assign values to parameters
    Map<String, Object> parameters = new HashMap<String, Object>();
    parameters.put("firstName", firstName);
    parameters.put("lastName", lastName);
    parameters.put("money", money);

    // Save
    jdbcTemplate.update(sql, parameters);
}





/**
 * Deletes an existing person
 * @param id the id of the existing person
 */
public void delete(String id) {
    logger.debug("Deleting existing person");

    // Prepare our SQL statement using Unnamed Parameters style
    String sql = "delete from person where id = ?";

    // Assign values to parameters
    Object[] parameters = new Object[] {id};

    // Delete
    jdbcTemplate.update(sql, parameters);
}

/**
 * Edits an existing person
 * @param id the id of the existing person
 * @param firstName the first name of the existing person
 * @param lastName the last name of the existing person
 * @param money the money of the existing person
 */
public void edit(String id, String firstName, String lastName, Double money) {
    logger.debug("Editing existing person");

    // Prepare our SQL statement
    String sql = "update person set first_name = :firstName, " +
            "last_name = :lastName, money = :money where id = :id";

    // Assign values to parameters
    Map<String, Object> parameters = new HashMap<String, Object>();
    parameters.put("id", id);
    parameters.put("firstName", firstName);
    parameters.put("lastName", lastName);
    parameters.put("money", money);

    // Edit
    jdbcTemplate.update(sql, parameters);

}



@Override
public void add(Person person) {
    // TODO Auto-generated method stub

}

@Override
public void edit(Person person) {
    // TODO Auto-generated method stub

}




 }

我添加了这个

Appilcation 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="com.app.a" />



<!-- 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="jdbc-context.xml" />

现在我没有收到数据源 bean 错误，但只有找不到 autowire bean 的错误。当我尝试添加 com.app.service.PersonService com.app.r.Personrepo。在应用程序 context.xml 中

它给了我 http 未找到错误 uri

score 1 · Accepted Answer

我花了很多时间在这上面！我的错！后来发现我声明注解的类Service或者Component是abstract类型。已在 Springframework 上启用调试日志，但未收到任何提示。请检查类是否为抽象类型。如果这样，应用的基本规则不能实例化抽象类。

score 0 · Accepted Answer

我遇到了同样的问题。我在以下代码中正确命名包名称后解决了这个问题<context:component-scan base-package="com.mysweethome"></context:component-scan>

score 0 · Accepted Answer

如果你已经尝试了所有的建议但仍然不行，那么最后一个方法是删除服务器中的项目文件，例如我使用的是tomcat，然后进入webapps目录和work目录，删除相应的项目文件。删除时要小心。

我通过这个解决了同样的问题，所以我正在考虑项目缓存的原因，即使清除了IDE 中的project和server。希望它可以提供帮助:)

spring - Spring Autowire 错误预计至少有 1 个 bean 有资格作为此依赖项的自动装配候选者

3 回答 3

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