Hibernate访问数据库，HibernateTemplate操作数据库，实现增删改查

1、首先创建封装Hibernate的Dao类

import java.io.Serializable;
import java.util.List;

import javax.annotation.Resource;

import org.springframework.orm.hibernate5.HibernateTemplate;
import org.springframework.stereotype.Component;

@Component
public class UserDao<T> {

   @Resource(name="hibernateTemplate")
   private HibernateTemplate hibernateTemplate;

   public void add(Object o){
       hibernateTemplate.save(o);
   }
   public List<T> select(String hql){
       List<T> stus=(List<T>) hibernateTemplate.find(hql);
       return stus;
   }

   public Object get(Class clazz,Serializable id) {
       Object obj = hibernateTemplate.get(clazz, id);
       return obj;
   }
   public Object getbyid(Class class1,Long id){
       Object object = hibernateTemplate.get(class1, id);
       return object;
   }

   public void delete(Class clazz,Serializable id) {
       hibernateTemplate.delete(this.get(clazz, id));
   }

   public void update(Object o) {
       hibernateTemplate.update(o);
   }

}

2、中间服务类

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.ssh.bean.Student;
import com.ssh.bean.Userinfodz;
import com.ssh.dao.UserDao;

@Transactional
@Service
public class UserService {

   @Resource(name="userDao")
   private UserDao userDao;

   public void add(Student stu){
       userDao.add(stu);
   }

   public List<Student> showUser(){
//       List<Student> stus = userDao.select("from Student");//查询所有
       List<Student> stus = userDao.select("from Student where pword LIKE '%1%'");//条件查询
       /*users=(List<Student>)hibernateTemplate.find("from User where uname=?","秦维");*/
       return stus;
   }
   public List<Userinfodz> showinfo(){

       List<Userinfodz> inList = userDao.select("from Userinfodz");

       return inList;
   }
   public Userinfodz getobjUserinfodzbyid (Long ab){
       Userinfodz userinfodz = (Userinfodz) userDao.getbyid(Userinfodz.class,ab );

       return userinfodz;
   }
   public void adduserinfo(Userinfodz userinfodz){
       userDao.add(userinfodz);
   }
}

3、测试类：

@Resource(name="userService")
private UserService userService;

Userinfodz userinfodz2 = userService.getobjUserinfodzbyid(11L);

（1）、查询

// List<Student> stus = userDao.select("from Student");//查询所有
List<Student> stus = userDao.select("from Student where pword LIKE '%1%'");//条件查询

根据id查询

   public Userinfodz getobjUserinfodzbyid (Long ab){
       Userinfodz userinfodz = (Userinfodz) userDao.getbyid(Userinfodz.class,ab );

       return userinfodz;
   }

（2）、插入数据

       Userinfodz userinfodz = new Userinfodz();
       userinfodz.setUsername("sqlname");
       userinfodz.setUserno(999);
       userinfodz.setUserpwd("sqlpwd");
       userService.adduserinfo(userinfodz);

@Resource(name="hibernateTemplate")
private HibernateTemplate hibernateTemplate;

hibernateTemplate.save(userinfodz);

（3）删除数据

dao方法

   public Object getbyid(Class class1,Long id){
       Object object = hibernateTemplate.get(class1, id);
       return object;
   }

   public void deletebyid(Class class1,Long id){
       hibernateTemplate.delete(this.getbyid(class1, id));
   }

中间服务

   public void deletebyid(Long ab){
       userDao.deletebyid(Userinfodz.class, ab);
   }

测试

userService.deletebyid(10L);

（4）修改数据

   public void updatebyid(Class class1,String uname,String upwd,Long id){
       Userinfodz userinfodz = (Userinfodz) this.getbyid(class1,id );
       userinfodz.setUsername(uname);
       userinfodz.setUserpwd(upwd);
       hibernateTemplate.update(userinfodz);
   }

   public void updatebyid(Class class1,String uname,String upwd,Long id){
       userDao.updatebyid(class1,uname,upwd, id);
   }

userService.updatebyid(Userinfodz.class,"修改的铭2","修改的pwd2", 7L);