我已经从 stackoverflow 中找到了很多我的查询的许多解决方案，这是我第一次在这里提出问题，我真的不知道这有什么问题。实际上，我正在尝试按类型自动装配我的一个课程，但无法做到这一点。以下是按顺序排列的源代码。
弹簧上下文
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-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/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
p:location="/WEB-INF/mysqlConfig.properties" />
<bean id="sessionManager" class="com.bakaenterprise.dal.SessionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<context:annotation-config />
<context:component-scan base-package="com.bakaenterprise" />
<bean id="searchManager" class="com.bakaenterprise.bl.SearchManager" />
<bean id="fileDao" class="com.bakaenterprise.dal.impl.FileUploadDao" />
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="${jdbc.driverClassName}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="initialSize" value="10" />
<property name="maxActive" value="5" />
<property name="maxWait" value="5000" />
</bean>
<!-- Hibernate Configuration -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"
p:dataSource-ref="dataSource" p:packagesToScan="com.bakaenterprise.beans">
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
<prop key="hibernate.show_sql">
true
</prop>
<prop key="hibernate.generate_statistics">
true
</prop>
</props>
</property>
</bean>
</beans>
界面
package com.bakaenterprise.dal;
import com.bakaenterprise.beans.FileUploadBean;
import com.bakaenterprise.core.base.GenericDao;
public interface IFileUploadDao extends GenericDao<FileUploadBean> {
}
执行
package com.bakaenterprise.dal.impl;
import com.bakaenterprise.beans.FileUploadBean;
import com.bakaenterprise.core.base.HibernateDaoSupport;
import com.bakaenterprise.dal.IFileUploadDao;
import java.io.Serializable;
import java.util.List;
import org.springframework.stereotype.Component;
/**
* @author ali
*/
@Component
public class FileUploadDao extends HibernateDaoSupport<FileUploadBean> implements IFileUploadDao {
@Override
public boolean save(FileUploadBean obj) {
super.save(obj);
return true;
}
@Override
public FileUploadBean getRecordById(Serializable id) {
return super.getRecordById(id);
}
public boolean deleteRecordById(int id){
return super.deleteById(id);
}
@Override
public List<FileUploadBean> listAll() {
return super.listAll();
}
}
经理班
package com.bakaenterprise.bl;
package com.bakaenterprise.bl;
import com.bakaenterprise.dal.IFileUploadDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
/**
* @author ali
*/
@Component
public class TestManagerImpl implements ITestManager {
@Autowired
private IFileUploadDao fileDao;
@Override
public void test() {
throw new UnsupportedOperationException("Not supported yet.");
}
@Override
public IFileUploadDao getFileDao() {
return fileDao;
}
@Override
public void setFileDao(IFileUploadDao fileDao) {
this.fileDao = fileDao;
}
}
我正在使用搜索管理器并测试 FileUploadDao 对象的代码是否为空
@Autowired
private ITestManager testManager;
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
IFileUploadDao fileUploadDao = testManager.getFileDao();
// now testManager is null
}
Web.xml
<?xml version="1.0" encoding="UTF-8"?>
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<servlet-name>SearchServlet</servlet-name>
<servlet-class>com.bakaenterprise.server.SearchServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>SearchServlet</servlet-name>
<url-pattern>/servlets/SearchServlet</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<jsp-config>
<taglib>
<taglib-uri>/jstl/core_rt</taglib-uri>
<taglib-location>/WEB-INF/tld/c.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/jstl/xml_rt</taglib-uri>
<taglib-location>/WEB-INF/tld/x_rt.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/jstl/fn_rt</taglib-uri>
<taglib-location>/WEB-INF/tld/fn.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/jstl/fmt_rt</taglib-uri>
<taglib-location>/WEB-INF/tld/fmt.tld</taglib-location>
</taglib>
</jsp-config>
<filter>
<filter-name>performance</filter-name>
<filter-class>com.bakaenterprise.util.PerformanceLog</filter-class>
</filter>
<filter-mapping>
<filter-name>performance</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/springContext.xml</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
</web-app>
现在 File Dao 总是为空，我认为它没有扫描组件，虽然基本包是正确的。任何帮助或建议都将受到高度重视和赞赏。而且我知道这种类型的问题被问了很多次，所以很抱歉再次问这个问题，这些答案对我不起作用。