SSH框架整合3——原生态SessionFactory

================================================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_4_0.xsd"

         version="4.0">

    <context-param>

        <param-name>contextConfigLocation</param-name>

        <param-value>classpath*:spring.xml</param-value>

    </context-param>

    <!--配置监听器-->

    <listener>

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

    </listener>

    <!--配置OpenSessionInView,需要配置在struts过滤器之前，否则会被过滤掉-->

    <filter>

        <filter-name>openSessionInView</filter-name>

        <filter-class>org.springframework.orm.hibernate5.support.OpenSessionInViewFilter</filter-class>

    </filter>

    <filter-mapping>

        <filter-name>openSessionInView</filter-name>

        <url-pattern>/*</url-pattern>

    </filter-mapping>

    <!-- Struts核心过滤器 -->

    <filter>

        <filter-name>struts2</filter-name>

        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>

    </filter>

    <filter-mapping>

        <filter-name>struts2</filter-name>

        <url-pattern>/*</url-pattern>

    </filter-mapping>

</web-app>

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

    <!--开启注解-->
    <context:annotation-config/>
    <!--告知spring要去哪个包找注解-->
    <context:component-scan base-package="com.ibeifeng.ssh"/>
    <aop:aspectj-autoproxy/>

    <bean name="myDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <!--配置数据库信息-->
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/houserent"/>
        <property name="username" value="root"/>
        <property name="password" value="123456"/>
    </bean>

    <!--配置session信息-->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
        <property name="dataSource" ref="myDataSource"/>
        <!--由于这里我们使用的是注解的方式得到属性，因此使用packagesToScan,
        若在hibernate中使用hibernate.cfg.xml则在此处就使用mappingResources,
        作用是指定从哪个包中查找注解的model-->
        <property name="packagesToScan">
            <value>com.ibeifeng.ssh.model</value>
        </property>
        <!--配置hibernate属性-->
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
                <prop key="hibernate.hbm2ddl.auto">update</prop>
                <prop key="hibernate.show_sql">true</prop>
            </props>
        </property>
    </bean>

    <bean id="txManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
        <!--注入sessionFactory-->
        <!--<property name="dataSource" ref="myDataSource"/>-->
        <property name="sessionFactory" ref="sessionFactory"/>
    </bean>

    <!--配置事务增强，以及哪些方法使用什么样的规则-->
    <tx:advice id="txAdvice" transaction-manager="txManager">
        <tx:attributes>
            <!--*号表示所有的方法都加入事务-->
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>

    <!--spring事务的实现是基于AOP方式-->
    <aop:config>
        <!--定义切入点-->
        <aop:pointcut id="allMethod" expression="execution(* com.ibeifeng.ssh.dao.*.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="allMethod"/>
    </aop:config>
</beans>

================================================struts.xml==============================================

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
        "http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
    <constant name="struts.devMode" value="true"/>
    <constant name="struts.enable.DynamicMethodInvocation" value="true"/>
    <package name="default" extends="struts-default">

        <!--使用通配符-->
        <action name="*_*" class="{1}Controller" method="{2}">
            <result name="success">{1}/{2}.jsp</result>
        </action>
    </package>
</struts>

================================================Employee.java==============================================

package com.ssh.model;

import org.hibernate.annotations.GenericGenerator;

import javax.persistence.*;

@Entity
@Table(name = "t_emp")
public class Employee {
    private int id;
    private String name;
    private String salary;

    public Employee(){}

    public Employee(int id, String name, String salary) {
        this.id = id;
        this.name = name;
        this.salary = salary;
    }

    @Id
    @GenericGenerator(name = "increment", strategy = "increment")
    @GeneratedValue(generator = "increment")
    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    @Column(name = "name")
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Column(name = "salary")
    public String getSalary() {
        return salary;
    }

    public void setSalary(String salary) {
        this.salary = salary;
    }

    @Override
    public String toString() {
        return "Employee{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", salary='" + salary + '\'' +
                '}';
    }
}


================================================Group.java==============================================

package com.ssh.model;

import org.hibernate.annotations.GenericGenerator;
import javax.persistence.*;

@Entity
@Table(name="t_group")
public class Group {
    private int id;
    private String name;

    public Group(){}

    public Group(int id, String name) {
        this.id = id;
        this.name = name;
    }

    @Id
    @GenericGenerator(name = "increment",strategy = "increment")
    @GeneratedValue(generator = "increment")
    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    @Column(name="name")
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "Group{" +
                "id=" + id +
                ", name='" + name + '\'' +
                '}';
    }
}

================================================BaseDao.java==============================================

package com.ssh.dao;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.query.Query;

import javax.annotation.Resource;
import java.lang.reflect.ParameterizedType;
import java.util.List;

public class BaseDao<T> implements IBaseDao<T> {
    private SessionFactory sessionFactory;

    @Resource
    public void setSessionFactory(SessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

    public Session getSession(){
        return sessionFactory.openSession();
    }

    @Override
    public void add(T t) {
        getSession().save(t);
    }

    @Override
    public void update(T t) {
        getSession().update(t);
    }

    @Override
    public void delete(int id) {
        getSession().delete(id);
    }

    public Class<T> getCla(){
        return (Class<T>)(((ParameterizedType)
                (this.getClass().getGenericSuperclass()))
                .getActualTypeArguments()[0]);
    }

    @Override
    public T load(int id) {
        /*由于在load()方法中需要给一个类作为参数，但现在还不知道具体是哪个类，因此需要
        一个得到类的方法getCla()
         */
        //在这里若使用load()方法需要在web.xml里面配置OpenSessionInView的过滤器,若使用get()则不要
        //return this.getHibernateTemplate().get(getCla(),id);
        return getSession().load(getCla(),id);
    }

    //查询集合
    @Override
    public List<T> list(String hql) {
        Query query = getSession().createQuery(hql);
        return query.list();
    }

    //带参数的集合查询
    @Override
    public List<T> list(String hql, Object[] params) {
        Query query = getSession().createQuery(hql);
        //判断参数是否为空
        if(params != null && params.length > 0){
            for(int i=0; i<params.length; i++){
                query.setParameter(i,params[i]);
            }
        }
        return query.list();
    }

    //带参数的分页查询
    @Override
    public List<T> list(String hql, Object[] params, int pageIndex, int pageSize) {
        Query query = getSession().createQuery(hql);
        //判断参数是否为空
        if(params != null && params.length > 0) {
            for (int i = 0; i < params.length; i++) {
                query.setParameter(i, params[i]);
            }
        }
        return query.setFirstResult(pageIndex).setMaxResults(pageSize).list();
    }

    //获取总记录数
    @Override
    public Long count(String hql) {
        return (Long) getSession().createQuery(hql).uniqueResult();
    }

    @Override
    public Long count(String hql, Object[] params) {
        Query query = getSession().createQuery(hql);
        //判断参数是否为空
        if(params != null && params.length > 0) {
            for (int i = 0; i < params.length; i++) {
                query.setParameter(i, params[i]);
            }
        }
        return (Long)query.uniqueResult();
    }
}


================================================EmpDao.java==============================================

package com.ssh.dao;

import com.ssh.model.Employee;

public class EmpDao extends BaseDao<Employee> implements IEmpDao {
}

================================================GroupDao.java==============================================

package com.ssh.dao;
import com.ssh.model.Group;
import org.springframework.stereotype.Repository;

@Repository
public class GroupDao extends BaseDao<Group> implements IGroupDao {

}

================================================IBaseDao.java==============================================

package com.ssh.dao;

import java.util.List;

public interface IBaseDao<T> {
    public void add(T t);
    public void update(T t);
    public void delete(int id);
    public T load(int id);
    public List<T> list(String hql);
    public List<T> list(String hql, Object[] params);
    public List<T> list(String hql, Object[] params, int pageIndex, int pageSize);
    public Long count(String hql);
    public Long count(String hql, Object[] params);
}

================================================IEmpDao.java==============================================

package com.ssh.dao;

import com.ssh.model.Employee;

public interface IEmpDao extends IBaseDao<Employee> {
}

================================================IGroupDao.java==============================================

package com.ssh.dao;

import com.ssh.model.Group;

public interface IGroupDao extends IBaseDao<Group>{
}

================================================GroupService.java==============================================

package com.ssh.service;

import com.ssh.dao.IGroupDao;
import com.ssh.model.Group;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import java.util.List;

@Service
public class GroupService implements IGroupService {
    private IGroupDao groupDao;

    @Resource
    public void setGroupDao(IGroupDao groupDao) {
        this.groupDao = groupDao;
    }

    @Override
    public void save(Group group) {
        groupDao.add(group);
    }

    @Override
    public Group load(int id) {
        return null;
    }

    @Override
    public List<Group> list(){
        //此处的from后面只能写类名
        String hql = "from Group";
        return groupDao.list(hql);
    }

    @Override
    public List<Group> list(int pageIndex, int pageSize) {
        String hql = "from Group";
        return groupDao.list(hql,null,pageIndex,pageSize);
    }
}

================================================IGroupService.java==============================================

package com.ssh.service;

import com.ssh.model.Group;
import java.util.List;

public interface IGroupService {
    public void save(Group group);
    public Group load(int id);
    //GroupService需要使用哪些方法只要在接口中添加即可
    public List<Group> list();
    public List<Group> list(int pageIndex, int pageSize);
}

================================================GroupController.java==============================================

package com.ssh.controller;

import com.ssh.model.Group;
import com.ssh.service.IGroupService;
import com.opensymphony.xwork2.ActionContext;
import org.springframework.stereotype.Controller;
import javax.annotation.Resource;
import java.util.List;

@Controller("groupController")
public class GroupController {
    private IGroupService groupService;
    //需要保存哪些类的数据，就在这里定义哪些类来接收数据
    private Group group;
    private int pageIndex=1;
    private int pageSize=2;

    public int getPageIndex() {
        return pageIndex;
    }

    public void setPageIndex(int pageIndex) {
        this.pageIndex = pageIndex;
    }

    public int getPageSize() {
        return pageSize;
    }

    public void setPageSize(int pageSize) {
        this.pageSize = pageSize;
    }

    public Group getGroup() {
        return group;
    }

    public void setGroup(Group group) {
        this.group = group;
    }

    @Resource
    public void setGroupService(IGroupService groupService) {
        this.groupService = groupService;
    }

    public String add(){
        groupService.save(group);
        return "success";
    }

    //分页查询
    public String list(){
//        List<Group> groups = groupService.list();
        List<Group> groups = groupService.list(pageIndex,pageSize);
        ActionContext.getContext().put("group",groups);
        return "success";
    }
}


===========================遇到的问题========================

java.lang.NullPointerException
com.ibeifeng.ssh.dao.BaseDao.getSession(BaseDao.java:13)
com.ibeifeng.ssh.dao.BaseDao.list(BaseDao.java:50)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.Method.invoke(Unknown Source)
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343)
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:197)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction

(TransactionAspectSupport.java:294)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185)
org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
com.sun.proxy.$Proxy37.list(Unknown Source)
com.ibeifeng.ssh.service.GroupService.list(GroupService.java:31)
com.ibeifeng.ssh.controller.GroupController.add(GroupController.java:31)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.Method.invoke(Unknown Source)
ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:897)
ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1299)
ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68)
com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:117)
com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:108)
ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1375)
ognl.ASTMethod.getValueBody(ASTMethod.java:91)
ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
ognl.SimpleNode.getValue(SimpleNode.java:258)
ognl.Ognl.getValue(Ognl.java:470)
ognl.Ognl.getValue(Ognl.java:434)
com.opensymphony.xwork2.ognl.OgnlUtil$3.execute(OgnlUtil.java:362)
com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecuteMethod(OgnlUtil.java:414)
com.opensymphony.xwork2.ognl.OgnlUtil.callMethod(OgnlUtil.java:360)
com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:430)
com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:290)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:251)
org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:168)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept

(AnnotationValidationInterceptor.java:76)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:140)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:575)
org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81)
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
org.springframework.orm.hibernate5.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:152)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:498)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1139)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2555)
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2544)
java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Unknown Source)

解决方法:错误提示中显示BaseDao方法中，语句"return sessionFactory.openSession()"存在问题，经调试后发现是因为没有注册

sessionFactory变量的原因，给sessionFactory添加getter&setter方法

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