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http-500：Servlet.init() for servlet SpringDispatcherServlet threw exception

发布于 2021-11-30 23:47:33 字数 30471 浏览 863 评论 3

在使用solr与spring一起后，配置完再去访问，总是找不到controller。很愁，找不到原因，愿大神指点一二，感激。。。

controller层

package com.lxy.main;

import com.lxy.entity.ResultModel;
import com.lxy.service.ProductService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

/**
 * Created by BlingBlingBling on 2017/8/18.
 */
@Controller
@RequestMapping("/product")
public class ProductController {

    @Autowired
    private ProductService service;

    @RequestMapping("/list")
    public String list(String querything, String catalog_name,
                       String price, String sort,
                       Integer page, Model model) throws Exception{

        ResultModel rm = service.getProducts(querything, catalog_name, price, sort, page);

        //将查询结果防到request作用域
        model.addAttribute("result",rm);

        //简单类型的数据回显
        model.addAttribute("querything",querything);
        model.addAttribute("catalog_name",catalog_name);
        model.addAttribute("price",price);
        model.addAttribute("sort",sort);
        model.addAttribute("page",page);

        return  "product_list";
    }

}

service

package com.lxy.service;

import com.lxy.entity.ResultModel;

/**
 * Created by BlingBlingBling on 2017/8/18.
 */
public interface ProductService {
    public ResultModel getProducts(String querything,String catalogName,String price,String sort,Integer page) throws Exception;
}

serviceImpl

package com.lxy.service.impl;

import com.lxy.entity.Products;
import com.lxy.entity.ResultModel;
import com.lxy.service.ProductService;
import org.apache.commons.lang.StringUtils;
import org.apache.solr.client.solrj.SolrQuery;
import org.apache.solr.client.solrj.impl.HttpSolrServer;
import org.apache.solr.client.solrj.response.QueryResponse;
import org.apache.solr.common.SolrDocument;
import org.apache.solr.common.SolrDocumentList;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * Created by BlingBlingBling on 2017/8/18.
 */
@Service
public class ProductServiceImpl implements ProductService{

    @Autowired
    //依赖注入server
    private HttpSolrServer server;

    @Override
    public ResultModel getProducts(String querything, String catalogName, String price, String sort, Integer page) throws Exception {

        //创建SolrQuery对象
        SolrQuery query = new SolrQuery();

        //输入关键字
        if(StringUtils.isNotEmpty(querything)){
            query.setQuery(querything);
        }else{
            query.setQuery("*:*");
        }

        //输入商品分类过滤条件
        if(StringUtils.isNotEmpty(catalogName)){
            query.addFilterQuery("product_catalog_name:"+catalogName);
        }

        // 输入价格区间过滤条件
        // price的值：0-9 10-19
        if (StringUtils.isNotEmpty(price)) {
            String[] ss = price.split("-");
            if (ss.length == 2) {
                query.addFilterQuery("product_price:[" + ss[0] + " TO " + ss[1]
                        + "]");
            }
        }

        // 设置排序
        if ("1".equals(sort)) {
            query.setSort("product_price", SolrQuery.ORDER.desc);
        } else {
            query.setSort("product_price", SolrQuery.ORDER.asc);
        }

        // 设置分页信息
        if (page == null)
            page = 1;

        query.setStart((page - 1) * 20);
        query.setRows(20);

        // 设置默认域
        query.set("df", "product_keywords");

        // 设置高亮信息
        query.setHighlight(true);
        query.addHighlightField("product_name");
        query.setHighlightSimplePre("<font style="color:red" >");
        query.setHighlightSimplePost("</font>");

        QueryResponse response = server.query(query);
        // 查询出的结果
        SolrDocumentList results = response.getResults();
        // 记录总数
        long count = results.getNumFound();

        List<Products> products = new ArrayList<>();
        Products prod;

        // 获取高亮信息
        Map<String, Map<String, List<String>>> highlighting = response
                .getHighlighting();
        for (SolrDocument doc : results) {
            prod = new Products();

            // 商品ID
            prod.setPid(Integer.parseInt(doc.get("id").toString()));

            List<String> list = highlighting.get(doc.get("id")).get(
                    "product_name");
            // 商品名称
            if (list != null)
                prod.setName(list.get(0));
            else {
                prod.setName(doc.get("product_name").toString());
            }

            // 商品价格
            prod.setPrice(Integer.parseInt(doc.get("product_price").toString()));
            // 商品图片地址
            prod.setPicture(doc.get("product_picture").toString());

            products.add(prod);
        }

        // 封装ResultModel对象
        ResultModel rm = new ResultModel();
        rm.setProductList(products);
        rm.setCurPage(page);
        rm.setRecordCount(count);

        int pageCount = (int) (count / 20);

        if (count % 20 > 0)
            pageCount++;
        // 设置总页数
        rm.setPageCount(pageCount);

        return rm;
    }
}

spring.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:aop="http://www.springframework.org/schema/aop"
   xmlns:mvc="http://www.springframework.org/schema/mvc"
   xmlns:p="http://www.springframework.org/schema/p"
   xmlns:util="http://www.springframework.org/schema/util"
   xmlns:jdbc="http://www.springframework.org/schema/jdbc"
   xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.0.xsd
      http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.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-4.0.xsd
      http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
      http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">
   
   <!-- 扫描service,mapper包 -->
   <!--<context:component-scan base-package="com.lxy"></context:component-scan>-->
   
   <!-- 引入配置文件 -->
   <!--<bean id="propertyConfigurer"
      class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
      <property name="location" value="classpath:jdbc.properties" />
   </bean>-->
   
   <!-- 创建数据源（数据库连接池使用DBCP） -->
   <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
      <!--<property name="driverClassName" value="${driver}"></property>
      <property name="url" value="${url}"></property>
      <property name="username" value="${username}"></property>
      <property name="password" value="${password}"></property>-->
   </bean>
   
   <!-- MyBatis -->   
   <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->
   <!--<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
      <property name="dataSource" ref="dataSource" />
   </bean>-->
   
   <!-- Mapper接口所在包名，Spring会自动查找其下的类 -->
   <!--<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
      <property name="basePackage" value="com.lxy.mapper" />
      <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
   </bean>-->
   
   <!-- spring -->
   <!-- 配置事务 -->
   <bean id="transactionManager"
      class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
      <property name="dataSource" ref="dataSource" />
   </bean>
   
   <!-- 开启事务控制的注解支持 -->  
    <tx:annotation-driven transaction-manager="transactionManager"/>
   
</beans>

spring-mvc.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:aop="http://www.springframework.org/schema/aop"
   xmlns:mvc="http://www.springframework.org/schema/mvc"
   xmlns:p="http://www.springframework.org/schema/p"
   xmlns:util="http://www.springframework.org/schema/util"
   xmlns:jdbc="http://www.springframework.org/schema/jdbc"
   xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.0.xsd
      http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.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-4.0.xsd
      http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
      http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">
   
   <!-- 扫描controller -->
   <context:component-scan base-package="com.lxy.main"></context:component-scan>
   
   <!-- 配置返回页面 -->
   <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
      <property name="prefix" value="/WEB-INF/jsp/" />
      <property name="suffix" value=".jsp" />
   </bean>


   <!-- 配置HttpSolrServer -->
   <bean class="org.apache.solr.client.solrj.impl.HttpSolrServer">
      <constructor-arg value="http://localhost:8080/solr/"></constructor-arg>
   </bean>
   
</beans>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">

    <!-- 配置springMVC的核心控制器  Start-->
    <!-- spring MVC DispatcherServlet -->
    <servlet>
        <servlet-name>SpringDispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>SpringDispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <!-- 配置springMVC的核心控制器  End-->

    <!-- 配置spring  Start-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring.xml</param-value>
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- 配置spring  End-->

    <!-- 过滤器 -->
    <filter>
        <filter-name>EncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>EncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <!-- 欢迎页面 -->
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>

</web-app>
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'productController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.lxy.service.ProductService com.lxy.main.ProductController.service; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.lxy.service.ProductService] 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)}
	org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:292)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
	org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
	org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
	org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
	org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
	org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:700)
	org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
	org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
	org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:643)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:606)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:657)
	org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:525)
	org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:466)
	org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
	javax.servlet.GenericServlet.init(GenericServlet.java:160)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
	org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
	org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
	org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	java.lang.Thread.run(Thread.java:745)

 

root cause

org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.lxy.service.ProductService com.lxy.main.ProductController.service; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.lxy.service.ProductService] 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)}
	org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:508)
	org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
	org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:289)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
	org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
	org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
	org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
	org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
	org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:700)
	org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
	org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
	org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:643)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:606)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:657)
	org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:525)
	org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:466)
	org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
	javax.servlet.GenericServlet.init(GenericServlet.java:160)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
	org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
	org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
	org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	java.lang.Thread.run(Thread.java:745)

 

报错信息

org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.lxy.service.ProductService] 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)}
	org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1100)
	org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:960)
	org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:855)
	org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:480)
	org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
	org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:289)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
	org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
	org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
	org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
	org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
	org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:700)
	org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
	org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
	org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:643)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:606)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:657)
	org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:525)
	org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:466)
	org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
	javax.servlet.GenericServlet.init(GenericServlet.java:160)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
	org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
	org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
	org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	java.lang.Thread.run(Thread.java:745)

这是代码，辛苦各位大神看一下，帮帮忙，谢谢！

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评论（3）

夜血缘 2021-12-04 22:49:37

回复
这么神奇！ 然后，“倒置”是什么意思

回复
风苍溪 2021-12-04 09:58:01

回复
@map150 : 额，倒置就是修改啊，

回复
一人独醉 2021-12-02 19:42:04
<!-- 扫描service,mapper包 -->
   <!--<context:component-scan base-package="com.lxy"></context:component-scan>-->

这段为什么注释掉了，注释掉之后就不会去扫描com.lxy及其子包，然后就扫描不到类com.lxy.service.impl.ProductServiceImpl，就不会去创建这个bean了。没有这个bean，也没有其他bean是实现指定接口的，然后就报错了

回复
~没有更多了~

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