qq_35649402
你们让我起个名啊
2017-08-07 02:40

springMVC注入失败的问题

1
  • spring
  • java

运行项目后报错,请问我配置哪里写错了?

ERROR [localhost-startStop-1] - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'categoryController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.how2java.service.CategoryService com.how2java.controller.CategoryController.categoryService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'categoryService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.how2java.mapper.CategoryMapper com.how2java.service.impl.CategoryServiceImpl.categoryMapper; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.how2java.mapper.CategoryMapper] 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)}
ina.core.StandardWrapper.initServlet(StandardWrapper.java:1227)

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" 
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">

    <!-- spring的配置文件-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>


    <!-- spring mvc核心:分发servlet -->
    <servlet>
        <servlet-name>mvc-dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- spring mvc的配置文件 -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springMVC.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>mvc-dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

</web-app>


springMVC.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:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-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/context http://www.springframework.org/schema/context/spring-context-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/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">



    <context:annotation-config/>


    <context:component-scan base-package="com.how2java.controller" use-default-filters="false">
          <context:include-filter type="annotation" 
          expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <mvc:annotation-driven />

    <mvc:default-servlet-handler />


    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass"
            value="org.springframework.web.servlet.view.JstlView" />
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>
</beans>

applicationContext.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:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="
     http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-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/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-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/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
     http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">






    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">  
      <property name="driverClassName">  
          <value>com.mysql.jdbc.Driver</value>  
      </property>  
      <property name="url">  
          <value>jdbc:mysql://localhost:3306/test?characterEncoding=UTF-8</value>  

      </property>  
      <property name="username">  
          <value>root</value>  
      </property>  
      <property name="password">  
          <value>123456</value>  
      </property>   
    </bean>
    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>


    <bean id="commonSqlSessionFactory"
        class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="configLocation"
            value="classpath:elecDBConfiguration.xml" />
    </bean>


    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="*" propagation="REQUIRED"
                rollback-for="java.lang.Exception" />
        </tx:attributes>
    </tx:advice>
   <aop:config>  
        <aop:pointcut id="warehouse" 
             expression="execution (* com.how2java.service.*.*(..))" />  
        <aop:advisor advice-ref="txAdvice" 
             pointcut-ref="warehouse" />  
    </aop:config>  


</beans>

elecDBConfiguration.xml

 <?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC 
    "-//mybatis.org//DTD Config 3.0//EN"
    "http://mybatis.org/dtd/mybatis-3-config.dtd">
    <configuration>
    <typeAliases>
        <typeAlias alias="Category"
            type="com.how2java.pojo.Category" />
    </typeAliases>
    <mappers>
        <mapper resource="com/how2java/mapper/Category.xml"/>
    </mappers>
    </configuration>

java代码

 package com.how2java.pojo;

public class Category {
    private int id;
    private String name;
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    @Override
    public String toString() {
        return "Category [id=" + id + ", name=" + name + "]";
    }



}

 package com.how2java.service;

import java.util.List;

import com.how2java.pojo.Category;

public interface CategoryService {

    List<Category> list();

}

 package com.how2java.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.how2java.mapper.CategoryMapper;
import com.how2java.pojo.Category;
import com.how2java.service.CategoryService;

@Service("categoryService")
public class CategoryServiceImpl  implements CategoryService{
    @Autowired
    CategoryMapper categoryMapper;


    public List<Category> list(){
        return categoryMapper.list();
    };

}

 package com.how2java.controller;


import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import com.how2java.pojo.Category;
import com.how2java.service.CategoryService;

// 告诉spring mvc这是一个控制器类
@Controller
@RequestMapping("")
public class CategoryController {
    @Autowired
    CategoryService categoryService;

    @RequestMapping("listCategory")
    public ModelAndView listCategory(){
        ModelAndView mav = new ModelAndView();
        List<Category> cs= categoryService.list();

        // 放入转发参数
        mav.addObject("cs", cs);
        // 放入jsp路径
        mav.setViewName("listCategory");
        return mav;
    }

}

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