ich einige Frage, wenn ich mein Projekt mit Feder einrichten + springmvc + Mybatis

Question

Dao:

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

Service:

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); 
    } 
} 

Mapping:

<?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> 

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:

<?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> 

feder 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> 

, wenn ich es laufen. es zeigt diesen Fehler, ich weiß nicht, warum es nicht die Bohne schaffen kann ?!

Fehler:

org.springframework.web.context.ContextLoader.initWebApplicationContext Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'listViewServiceImp': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'IListViewDao' defined in file [/Users/Mario.Hu/Documents/mybatis/target/mybatis-1.0-SNAPSHOT/WEB-INF/classes/dao/IListViewDao.class]: Cannot resolve reference to bean 'sqlSessionFactory' while setting bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [spring-mybatis.xml]: Initialization of bean failed; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert property value of type 'java.lang.String' to required type 'org.springframework.core.io.Resource[]' for property 'mapperLocations'; nested exception is java.lang.IllegalArgumentException: Could not resolve resource location pattern [classpath:mapping/.xml]: class path resource [mapping/] cannot be resolved to URL because it does not exist at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:321) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264) Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'IListViewDao' defined in file [/Users/Mario.Hu/Documents/mybatis/target/mybatis-1.0-SNAPSHOT/WEB-INF/classes/dao/IListViewDao.class]: Cannot resolve reference to bean 'sqlSessionFactory' while setting bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [spring-mybatis.xml]: Initialization of bean failed; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert property value of type 'java.lang.String' to required type 'org.springframework.core.io.Resource[]' for property 'mapperLocations'; nested exception is java.lang.IllegalArgumentException: Could not resolve resource location pattern [classpath:mapping/.xml]: class path resource [mapping/] cannot be resolved to URL because it does not exist at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:359) Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [spring-mybatis.xml]: Initialization of bean failed; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert property value of type 'java.lang.String' to required type 'org.springframework.core.io.Resource[]' for property 'mapperLocations'; nested exception is java.lang.IllegalArgumentException: Could not resolve resource location pattern [classpath:mapping/.xml]: class path resource [mapping/] cannot be resolved to URL because it does not exist at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:564) Caused by: org.springframework.beans.TypeMismatchException: Failed to convert property value of type 'java.lang.String' to required type 'org.springframework.core.io.Resource[]' for property 'mapperLocations'; nested exception is java.lang.IllegalArgumentException: Could not resolve resource location pattern [classpath:mapping/.xml]: class path resource [mapping/] cannot be resolved to URL because it does not exist at org.springframework.beans.AbstractNestablePropertyAccessor.convertIfNecessary(AbstractNestablePropertyAccessor.java:610) Caused by: java.lang.IllegalArgumentException: Could not resolve resource location pattern [classpath:mapping/*.xml]: class path resource [mapping/] cannot be resolved to URL because it does not exist at org.springframework.core.io.support.ResourceArrayPropertyEditor.setAsText(ResourceArrayPropertyEditor.java:116) 27-May-2017 23:35:23.398 严重 [RMI TCP Connection(2)-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal One or more listeners failed to start. Full details will be found in the appropriate container log file 27-May-2017 23:35:23.420 严重 [RMI TCP Connection(2)-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal Context [] startup failed due to previous errors

warum? Ich folge anderen Leuten, um diesen Code zu erstellen! aber es kann nicht für mich arbeiten!

Answer 1

Gemessen an der Fehlermeldung scheint es nicht möglich zu sein, die Ressourcenverzeichniszuordnung in Ihrem Klassenpfad zu finden.

Alternativ verwenden Sie die unten im Feder mybatis.xml (Beachten Sie die extra *)

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

Dies wird nicht eine Ausnahme zurück, wenn nicht gefunden. Überprüfen Sie mehr für Unterschiede in diesem link