Spring中使用JdbcTemplate和HibernateTemplate的数据库操作

Posted 2020-08-03 代号菜鸟

目前我接触到的Spring的数据库操作主要包括两种，主要使用JdbcTemplate和HibernateTemplate。后者用于结合Hibernate操作。

两者都提供了持久层访问模板化，只需要获得一个SessionFactory就可以执行持久化操作。可以完成增删改查操作。

获取JdbcTemplate和HibernateTemplate的方式有两种

1. 传统的方式

2. 使用JdbcDaoSupport和HibernateDaoSupport获取，其包含两个方法。

(1) getHibernateTemplate/getJdbcTemplate (2) setSessionFactory

同样需要注入SesssionFactory

---

 

一般采用第二种方式

---

构建DAO层查询

BaseDao

1 package com.jason.centralbank.dao;
2 
3 import java.util.List;
4 
5 public interface BaseDao<T> {
6 
7     List<T> findAll(Class<T> entityClazz);
8 }

BaseDaoHibernate

 1 package com.jason.centralbank.dao;
 2 
 3 import org.hibernate.SessionFactory;
 4 import org.springframework.beans.factory.annotation.Autowired;
 5 import org.springframework.orm.hibernate4.support.HibernateDaoSupport;
 6 
 7 import java.util.List;
 8 
 9 public class BaseDaoHibernate<T> extends HibernateDaoSupport implements BaseDao<T> {
10 
11     @Autowired
12     public void setSessionFactoryOverride(SessionFactory sessionFactory)
13     {
14         super.setSessionFactory(sessionFactory);
15     }
16 
17     @SuppressWarnings("RedundantCast")
18     @Override
19     public List<T> findAll(Class<T> entityClazz) {
20         return (List<T>) getHibernateTemplate().loadAll(entityClazz);
21     }
22 }

DepositInforBaseDao

package com.jason.centralbank.dao;

import com.jason.centralbank.entities.DepositInfor;

public interface DepositInforBaseDao extends BaseDao<DepositInfor>{
}

DepositInforDao

1 package com.jason.centralbank.dao;
2 
3 import com.jason.centralbank.entities.DepositInfor;
4 import org.springframework.stereotype.Repository;
5 
6 @Repository
7 public class DepositInforDao extends BaseDaoHibernate<DepositInfor> implements DepositInforBaseDao{
8 }

DepositInfor

package com.jason.centralbank.entities;

import javax.persistence.*;

@Entity
@Table(name = "2011包头地区存款金额统计表")
public class DepositInfor {

    @Id
    @Column(name = "单位")
    private String Institution;
    @Column(name = "一月")
    private String Jan;
    @Column(name = "二月")
    private String Feb;
    @Column(name = "三月")
    private String Mar;
    @Column(name = "四月")
    private String Apr;
    @Column(name = "五月")
    private String May;
    @Column(name = "六月")
    private String Jun;
    @Column(name = "上半年")
    private String FirstHalfYear;

    public String getInstitution() {
        return Institution;
    }

    public void setInstitution(String institution) {
        Institution = institution;
    }

    public String getJan() {
        return Jan;
    }

    public void setJan(String jan) {
        Jan = jan;
    }

    public String getFeb() {
        return Feb;
    }

    public void setFeb(String feb) {
        Feb = feb;
    }

    public String getMar() {
        return Mar;
    }

    public void setMar(String mar) {
        Mar = mar;
    }

    public String getApr() {
        return Apr;
    }

    public void setApr(String apr) {
        Apr = apr;
    }

    public String getMay() {
        return May;
    }

    public void setMay(String may) {
        May = may;
    }

    public String getJun() {
        return Jun;
    }

    public void setJun(String jun) {
        Jun = jun;
    }

    public String getFirstHalfYear() {
        return FirstHalfYear;
    }

    public void setFirstHalfYear(String firstHalfYear) {
        FirstHalfYear = firstHalfYear;
    }

    @Override
    public String toString() {
        return "DepositInfor{" +
                "Institution=\'" + Institution + \'\\\'\' +
                ", Jan=\'" + Jan + \'\\\'\' +
                ", Feb=\'" + Feb + \'\\\'\' +
                ", Mar=\'" + Mar + \'\\\'\' +
                ", Apr=\'" + Apr + \'\\\'\' +
                ", May=\'" + May + \'\\\'\' +
                ", Jun=\'" + Jun + \'\\\'\' +
                ", FirstHalfYear=\'" + FirstHalfYear + \'\\\'\' +
                \'}\';
    }
}