作者：阳光-沙滩男人 | 来源：互联网 | 2023-05-18 11:50
一、Srping 与 Hibnernate 的整合
（4）开发
这里采用自底向上的开发模式。
（a）底层的开发
打开DB Explorer，连接上数据库，找到我们所需要的表，然后点击右键选择【Hibernate reverse Engineering】
Id Generator选择native，如果是Oracle可以选择increment
生成的代码如下：Employee.java
| package cn.zhang.crm.model.pojo; /** *Employeeentity.@authorMyEclipsePersistenceTools */ publicclass Employee implements java.io.Serializable { privatestaticfinallongserialVersionUID = 4740966089797222237L; private Integer id; private String name; private String address; private String phone; // Constructors /**defaultconstructor*/ public Employee() { } /**fullconstructor*/ public Employee(String name, String address, String phone) { this.name = name; this.address = address; this.phone = phone; } // Property accessors public Integer getId() { returnthis.id; } publicvoid setId(Integer id) { this.id = id; } public String getName() { returnthis.name; } publicvoid setName(String name) { this.name = name; } public String getAddress() { returnthis.address; } publicvoid setAddress(String address) { this.address = address; } public String getPhone() { returnthis.phone; } publicvoid setPhone(String phone) { this.phone = phone; } } |
Employee.hbm.xml
| xml version="1.0" encoding="utf-8"?> DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping> <class name="cn.zhang.crm.model.pojo.Employee" table="employee" catalog="test"> <id name="id" type="java.lang.Integer"> <column name="id" /> <generator class="native">generator> id> <property name="name" type="java.lang.String"> <column name="name" /> property> <property name="address" type="java.lang.String"> <column name="address" /> property> <property name="phone" type="java.lang.String"> <column name="phone" /> property> class> hibernate-mapping> |
同时我们需要将Employee.hbm.xml的路径放到applicationContext中。
| <property name="mappingResources"> <list> <value>cn/zhang/crm/model/pojo/Employee.hbm.xmlvalue> list> property> |
（b）DAO接口
实现CRUD方法，具体的EmployeeDao.java代码如下：
| package cn.zhang.crm.dao; import java.util.List; import cn.zhang.crm.model.pojo.Employee; publicinterface EmployeeDao { publicvoid add(Employee e); public Employee getEmployee(int id); public List getEmployees(); publicvoid update(Employee e); publicvoid delete(int id); } |
（c）实现DAO接口方法
实现EmployeeDao接口方法，同时要继承HibernateDaoSupport类，EmployeeDaoImpl.java的具体代码如下：
| package cn.zhang.crm.dao.hibernate; import java.util.List; import org.springframework.orm.hibernate3.support.HibernateDaoSupport; import cn.zhang.crm.dao.EmployeeDao; import cn.zhang.crm.model.pojo.Employee; public class EmployeeDaoImpl extends HibernateDaoSupport implements EmployeeDao { public void add(Employee e) { getHibernateTemplate().save(e); } public void delete(int id) { getHibernateTemplate().delete(getEmployee(id)); } public Employee getEmployee(int id) { return (Employee)getHibernateTemplate().get(Employee.class, id); } public List getEmployees() { //这里一定要写Employee，千万不要误写成employee，因为Hibernate是从对象中读取数据的 return getHibernateTemplate().find("from Employee"); } public void update(Employee e) { getHibernateTemplate().update(e); } } |
（d）service（或business）Manager服务层，主要是事务处理，利用的是代码生成技术（具体作用是什么现在还不是很清楚，在今后的学习中再好好的体会）
EmployeeManager.java（它是一个接口）代码如下：
| package cn.zhang.crm.service; import java.util.List; import cn.zhang.crm.model.pojo.Employee; publicinterface EmployeeManager { publicvoid addEmployee(Employee e); public Employee getEmployee(int id); public List listEmployee(); publicvoid updateEmployee(Employee e); publicvoid deleteEmployee(int id); } |
实现这个接口EmployeeManagerImpl.java：
| package cn.zhang.crm.service.impl; import java.util.List; import cn.zhang.crm.dao.EmployeeDao; import cn.zhang.crm.model.pojo.Employee; import cn.zhang.crm.service.EmployeeManager; publicclass EmployeeManagerImpl implements EmployeeManager { private EmployeeDao employeeDao; publicvoid setEmployeeDao(EmployeeDao employeeDao) { this.employeeDao = employeeDao; } publicvoid addEmployee(Employee e) { employeeDao.add(e); } publicvoid deleteEmployee(int id) { employeeDao.delete(id); } public Employee getEmployee(int id) { returnemployeeDao.getEmployee(id); } public List listEmployee() { returnemployeeDao.getEmployees(); } publicvoid updateEmployee(Employee e) { employeeDao.update(e); } } |
上述完成后，我们就需要在spring中注册类了。打开applicationContext.xml，然后注册
增加的代码如下：
| <bean id="employeeDao" class="cn.zhang.crm.dao.hibernate.EmployeeDaoHibernate"> <property name="sessionFactory"> <ref bean="sessionFactory" /> property> bean> <bean id="employeeManager" class="cn.zhang.crm.service.impl.EmployeeManagerImpl"> <property name="employeeDao"> <ref bean="employeeDao" /> property> bean> |
到此完成了Spring和Hibernate的整合。
京公网安备 11010802041100号