Question

道：

@Repository
public interface UserDao {
    int searchAccount(String account);
    int getPurview(User user);
}

服务：

public interface LoginService {
    int judgeForUser(User user);
    boolean searchAccount(String account);
}

ServiceImpl：

@Service
public class LoginServiceImp implements LoginService {

    @Resource
    private UserDao userDao;

    @Override
    public boolean searchAccount(String account) {
        if (userDao.searchAccount(account) == 1){
            return true;
        }
        return false;
    }

    @Override
    public int judgeForUser(User user) {
        return userDao.getPurview(user);
    }
}

映射：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="dao.UserDao">

    <select id="searchAccount" parameterType="String" resultType="int">
        select 1 from users where account = #{account} limit 1
    </select>

    <select id="getPurview" parameterType="model.User">
        select purview from users where account = #{account} and password = #{password}
    </select>

</mapper>

的web.xml：

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
    <display-name>Archetype Created Web Application</display-name>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-mybatis.xml</param-value>
    </context-param>

    <!-- Spring MVC servlet -->
    <servlet>
        <servlet-name>mvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:mvc-servlet.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
        <async-supported>true</async-supported>
    </servlet>

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

    <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>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <listener>
        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
    </listener>

    <session-config>
        <session-timeout>15</session-timeout>
    </session-config>
</web-app>

MVC-servlet.xml中：

<?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:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd   http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <context:component-scan base-package="controller"/>

    <mvc:default-servlet-handler/>

    <mvc:annotation-driven/>

    <bean id="viewResolver" class="org.thymeleaf.spring4.view.ThymeleafViewResolver"
          p:templateEngine-ref="templateEngine"
          p:characterEncoding="UTF-8"/>

    <bean id="templateEngine" class="org.thymeleaf.spring4.SpringTemplateEngine">
        <property name="templateResolvers">
            <set>
                <ref bean="templateResolver"/>
            </set>
        </property>
    </bean>

    <bean id="templateResolver" class="org.thymeleaf.spring4.templateresolver.SpringResourceTemplateResolver"
          p:prefix="/WEB-INF/pages/"
          p:templateMode="HTML"/>

    <bean class="org.thymeleaf.spring4.view.ThymeleafViewResolver">
        <property name="templateEngine" ref="templateEngine"/>
        <property name="characterEncoding" value="UTF-8"/>
    </bean>

    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="jsonHttpMessageConverter"/>
            </list>
        </property>
    </bean>

    <bean id="jsonHttpMessageConverter"
          class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
        <property name="supportedMediaTypes">
            <list>
                <value>application/json;charset=UTF-8</value>
            </list>
        </property>
    </bean>

    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"
          p:maxInMemorySize="3000000"/>

</beans>

弹簧mybatis.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:p="http://www.springframework.org/schema/p"
       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">

    <context:component-scan base-package="dao"/>
    <context:component-scan base-package="mapping"/>
    <context:component-scan base-package="service"/>

    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location" value="classpath:dbconfig.properties"/>
    </bean>

    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"
          p:url="${jdbc.url}"
          p:username="${jdbc.username}"
          p:password="${jdbc.password}"
          p:filters="stat"
          p:maxActive="8"
          p:initialSize="1"
          p:maxWait="60000"
          p:minIdle="1"
          p:timeBetweenEvictionRunsMillis="60000"
          p:minEvictableIdleTimeMillis="30000"
          p:validationQuery="SELECT 'x'"
          p:testWhileIdle="true"
          p:testOnBorrow="false"
          p:testOnReturn="false"/>

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="mapperLocations" value="classpath:mapping/*.xml"/>
        <property name="plugins">
            <array>
                <bean class="com.github.pagehelper.PageInterceptor">
                    <property name="properties">
                        <value>
                            helperDialect=mysql
                        </value>
                    </property>
                </bean>
            </array>
        </property>
    </bean>

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"
          p:basePackage="dao"
          p:sqlSessionFactoryBeanName="sqlSessionFactory"/>

    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
          p:dataSource-ref="dataSource"/>

</beans>

我跑的时候。它显示了这个错误，我不知道它为什么不能创建bean？！

错误：

org.springframework.web.context.ContextLoader.initWebApplicationContext 上下文初始化失败 org.springframework.beans.factory.BeanCreationException：错误创建名为＆＃39; listViewServiceImp＆＃39;：注入资源的bean 依赖失败;嵌套异常是 org.springframework.beans.factory.BeanCreationException：错误创建名为＆＃39; IListViewDao＆＃39;在文件中定义 [/Users/Mario.Hu/Documents/mybatis/target/mybatis-1.0-SNAPSHOT/WEB-INF/classes/dao/IListViewDao.class]：无法解析对bean＆＃39; sqlSessionFactory＆＃39;的引用在设置 bean属性＆＃39; sqlSessionFactory＆＃39 ;;嵌套异常是 org.springframework.beans.factory.BeanCreationException：错误创建名为＆＃39; sqlSessionFactory＆＃39;的bean在类路径中定义 resource [spring-mybatis.xml]：bean的初始化失败;嵌套异常是org.springframework.beans.TypeMismatchException：失败转换类型＆＃39; java.lang.String＆＃39;的属性值要求的类型＆＃39; org.springframework.core.io.Resource []＆＃39;对于财产＆＃39; mapperLocations＆＃39 ;;嵌套异常是 java.lang.IllegalArgumentException：无法解析资源 location pattern [classpath：mapping / .xml]：类路径资源 [mapping /]无法解析为URL，因为它不存在于 org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues（CommonAnnotationBeanPostProcessor.java:321）在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean（AbstractAutowireCapableBeanFactory.java:1264）引起：org.springframework.beans.factory.BeanCreationException：创建名称为＆＃39; IListViewDao＆＃39;的bean时出错在文件中定义 [/Users/Mario.Hu/Documents/mybatis/target/mybatis-1.0-SNAPSHOT/WEB-INF/classes/dao/IListViewDao.class]：无法解析对bean＆＃39; sqlSessionFactory＆＃39;的引用在设置 bean属性＆＃39; sqlSessionFactory＆＃39 ;;嵌套异常是 org.springframework.beans.factory.BeanCreationException：错误创建名为＆＃39; sqlSessionFactory＆＃39;的bean在类路径中定义 resource [spring-mybatis.xml]：bean的初始化失败;嵌套异常是org.springframework.beans.TypeMismatchException：失败转换类型＆＃39; java.lang.String＆＃39;的属性值要求的类型＆＃39; org.springframework.core.io.Resource []＆＃39;对于财产＆＃39; mapperLocations＆＃39 ;;嵌套异常是 java.lang.IllegalArgumentException：无法解析资源 location pattern [classpath：mapping / .xml]：类路径资源 [mapping /]无法解析为URL，因为它不存在于 org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference（BeanDefinitionValueResolver.java:359）引起：org.springframework.beans.factory.BeanCreationException：创建名为＆＃39; sqlSessionFactory＆＃39;的bean时出错在课堂上定义 path资源[spring-mybatis.xml]：bean的初始化失败; 嵌套异常是org.springframework.beans.TypeMismatchException：无法转换类型＆＃39; java.lang.String＆＃39;的属性值至必需的类型＆＃39; org.springframework.core.io.Resource []＆＃39;对于财产＆＃39; mapperLocations＆＃39 ;;嵌套异常是 java.lang.IllegalArgumentException：无法解析资源 location pattern [classpath：mapping / .xml]：类路径资源 [mapping /]无法解析为URL，因为它不存在于 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:564）引起：org.springframework.beans.TypeMismatchException：失败转换类型＆＃39; java.lang.String＆＃39;的属性值要求的类型＆＃39; org.springframework.core.io.Resource []＆＃39;对于财产＆＃39; mapperLocations＆＃39 ;;嵌套异常是 java.lang.IllegalArgumentException：无法解析资源 location pattern [classpath：mapping / .xml]：类路径资源 [mapping /]无法解析为URL，因为它不存在于 org.springframework.beans.AbstractNestablePropertyAccessor.convertIfNecessary（AbstractNestablePropertyAccessor.java:610）引起：java.lang.IllegalArgumentException：无法解决资源位置模式[classpath：mapping / * .xml]：类路径资源[mapping /]无法解析为URL，因为它没有存在于 org.springframework.core.io.support.ResourceArrayPropertyEditor.setAsText（ResourceArrayPropertyEditor.java:116） 2017年5月27日23:35：23.398严重[RMI TCP连接（2）-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal一个或多个听众未能开始。完整的详细信息将在适当的容器日志文件27-May-2017 23：35：23.420严重[RMI TCP 连接（2）-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal Context [] 由于以前的错误启动失败

为什么呢？我跟随其他人来构建这些代码！但它对我不起作用！

Answer 1

从错误消息判断，似乎无法在类路径中找到资源目录映射。

或者在spring-mybatis.xml中使用以下内容（注意额外的*）

<property name="mapperLocations" value="classpath*:mapping/*.xml"/>

如果未找到，则不会返回异常。请查看此link

的更多信息

当我使用spring + springmvc + mybatis

1 个答案: