bhtj27
bhtj27
2015-05-16 02:07
采纳率: 100%
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已采纳

spring3中的hibernateTemplate怎么拿不到数据

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

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:p="http://www.springframework.org/schema/p"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="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/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd" default-autowire="byName">

<!-- 加载常量 -->
<context:annotation-config />
<context:component-scan base-package="com.demo.oa" />




<!-- 配置数据源 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
    destroy-method="close">


     <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/hibernate_oa"/>
<property name="username" value="root"/>
<property name="password" value="taojun"/>

    <property name="initialSize" value="1"></property>
<!--初始化连接池 -->
<property name="maxActive" value="50"></property>
<!-- 最大连接数 -->
<property name="maxIdle" value="20"></property>
<!-- 最大空闲连接数 -->
<property name="minIdle" value="0"></property>
<!-- 最小空闲连接数 -->
<property name="maxWait" value="2000"></property>
<!-- 连接池耗尽,等待时间2s -->
<property name="testOnBorrow" value="true"></property>
<!-- 获取连接时,检测是否是有较连接 -->
<property name="testOnReturn" value="true"></property>
<!-- 归还连接时,检测是否是有较连接 -->
<property name="validationQuery" value="select 1"></property>
<!-- 配合获取与归还使用 -->
<property name="logAbandoned" value="true"></property>
<!-- 是否在自动回收超时连接的时候打印连接的超时错误 -->
<property name="removeAbandoned" value="true" />
<!--removeAbandoned: 是否自动回收超时连接 -->
<property name="removeAbandonedTimeout" value="60" />
<!--removeAbandonedTimeout: 超时时间(以秒数为单位) -->
<property name="minEvictableIdleTimeMillis" value="5000"></property>
<!--空闲连接最大有效时间 -->
<property name="timeBetweenEvictionRunsMillis" value="5000"></property><!-- 
    每隔5S踢除超时空闲连接 -->
</bean>



<!--定义了Hibernate的SessionFactory -->
<bean id="sessionFactory"
    class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
    <property name="dataSource" ref="dataSource" />

    <!-- 映射文件采用annotation形式,不用mapping -->

    <property name="packagesToScan" value="com.demo.oa.model"></property>


    <property name="hibernateProperties">
        <value>

            hibernate.dialect=org.hibernate.dialect.MySQLDialect
            hibernate.show_sql=true
            hibernate.format_sql=true
            hibernate.hbm2ddl.auto=update
            hibernate.jdbc.batch_size=20

        </value>

    </property>
</bean>
<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">
    <property name="sessionFactory" ref="sessionFactory"></property>
</bean>

<!-- more bean definitions go here -->

import java.util.List;

import javax.annotation.Resource;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.orm.hibernate3.HibernateTemplate;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.itheima.oa.model.Department;

public class DBUtil {

private HibernateTemplate hibernateTemplate;

public HibernateTemplate getHibernateTemplate() {
    return hibernateTemplate;
}

@Resource(name = "hibernateTemplate")
public void setHibernateTemplate(HibernateTemplate hibernateTemplate) {
    this.hibernateTemplate = hibernateTemplate;
}

public void findDep(){
    List li=hibernateTemplate.find("from Department");
    System.out.println(li);
}
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3条回答 默认 最新

  • bhtj27
    bhtj27 2015-05-16 02:10
    已采纳
    public void save(Department department) {
        // TODO Auto-generated method stub
    
    
        HibernateTemplate h=(HibernateTemplate) ToolsUtil.context.getBean("hibernateTemplate");
        System.out.println(h);
        System.out.println("实现层调用hibernateTemplate成功!");
    

    // this.getHibernateTemplate().save(department);
    System.out.println(department.getName()+"----"+department.getDescription());

        new DBUtil().findDep();
    
    }
    

    确定该方法执行了,控制台结果如下:
    调用departmentDaoImpl成功!
    org.springframework.orm.hibernate3.HibernateTemplate@2331ebb3
    实现层调用hibernateTemplate成功!

    通过ApplicationContext中的getBean方法拿到了hibernateTtemplate,怎么就是不能执行save,find等方法呢,hibernateTemplate好像一直是空的

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  • Evankaka
    Evankaka 2015-05-16 04:37

    你直接判断下它是不是空的不就行了么?

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  • qq_45233347
    「鲁贝拉茵芋」 2019-06-24 14:31

    eclipse提示spring3的getHibernateTemplate().find方法过期了
    spring3和jdk1.8不匹配
    百度都在说要不升级成spring4,要不改成jdk1.7

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