Spring3 + Hibernate3.6 实现简单 CRUD

本来是想拿Spring整合Hibernate4的，事实证明我道行尚浅 未遂……

看到这个异常，且在用Hibernate4的同学就要考虑Hibernate的版本问题了

（解决完这个问题发现4里边把HibernateTemplate取消掉了，所以就没再死扣）。

org.springframework.beans.factory.BeanCreationException: Error creating bean with name ' XXXXX ': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hibernateTemplate' defined in class path resource [applicationContext-common.xml]: Initialization of bean failed; nested exception is java.lang.NoClassDefFoundError: Lorg/hibernate/cache/CacheProvider;

原来弄过spring+ibatis的整合，其实道理差不多

都是spring帮忙注入，OR框架去数据库中CRUD，仅有的一点区别就是ibatis的SQL是手动的，Hibernate的HQL是自动的，所以Hibernate要实体Student用Annotation声明一下

一：model

用Hibernate的方式，声明实体、表名、主键等。

工程里不再需要 hibernate.cfg.xml 了，在spring配置文件的：hibernateProperties标签里配置就行了

 @Entity//测试程序里唯一一个实体
 @Table(name="t_student")//指定表名t_student
 public class Student
 {
     private int studentid;
     private String name;
     private int age;

     public String toString()
     {
         return " id=>"+studentid+" name=>"+name+" age=>"+age;
     }

     //setter&getter
     @Id//主键
     @GeneratedValue//自增长
     public int getStudentid() {
         return studentid;
     }

二：具体service

业务调用具体service时候，就需要其中聚合的DaoImpl，通过setter靠spring注入

@Resource(name="StudentDAOImpl01")指定注入的名字

 @Component("StudentService")//组件
 public class StudentService {

     //下边的setter定义了将要注入的实例
     private IStudentDAO studentDAO;

     public void add(Student stu) {//test调用这个add方法
         studentDAO.addStudent(stu);
     }
     public List<Student> getAll() {
         return studentDAO.selectAll();
     }

     public void delById(int id) {
         studentDAO.delStudentById(id);
     }

     public void updateStudent(Student stu) {
         studentDAO.updateStudent(stu);
     }

     public List<Student> selectByName(String name) {
         return studentDAO.selectStudentByName(name);
     }



     //setter&getter
     public IStudentDAO getStudentDAO() {
         return studentDAO;
     }
     @Resource(name="StudentDAOImpl01")//等StudentDAOImpl的注入
     public void setStudentDAO(IStudentDAO studentDAO) {
         this.studentDAO = studentDAO;
     }
     /*其他注入方式*/
 }

三：DaoImpl

(IDao就几个接口就不说了)

要把自己通过@Component("StudentDAOImpl01")准备好，等spring注入到上边的具体service里，靠名字识别

ibatis这里还要找到实体的配置文件，这里直接用HQL就行了，Hibernate会帮忙生成SQL语句

这用到：

hibernateTemplate.save(stu);

hibernateTemplate.delete(stu);

hibernateTemplate.update(stu);

(Student)hibernateTemplate.get(Student.class,new Integer(id)); 

hibernateTemplate.find(hql,name); 

其中find里边直接写HQL就行了，需要传参的话可以第一参数是带占位符的String，后一个传值

 @Component("StudentDAOImpl01")//会作为组件，注入到servise里
 public class StudentDAOImpl implements IStudentDAO
 {
     private HibernateTemplate hibernateTemplate;
     public HibernateTemplate getHibernateTemplate() {
         return hibernateTemplate;
     }
     @Resource//等待spring配置文件里配的hibernateTemplate注入
     public void setHibernateTemplate(HibernateTemplate hibernateTemplate) {
         this.hibernateTemplate = hibernateTemplate;
     }

     //下边是HQL的具体实现
     @Override
     public void addStudent(Student stu) {//不指定id就能自动BySequence
         hibernateTemplate.save(stu);
         System.out.println("插入时返回的对象=》"+stu.getStudentid());//打印返回的值
     }

     @Override
     public void delStudentById(int id) {
         //应该先select检查一下
         Student stu = hibernateTemplate.load(Student.class,new Integer(id));
         hibernateTemplate.delete(stu);
     }

     @Override
     public void updateStudent(Student stu) {
         hibernateTemplate.update(stu);
     }

     @Override
     public Student selectStudentById(int id) {
         Student stu = new Student();
         stu = (Student)hibernateTemplate.get(Student.class,new Integer(id));
         return stu;
     }

     @Override
     public List<Student> selectStudentByName(String name) {
         String hql = "from Student t where t.name IN ?";
         List<Student> stus = new ArrayList<Student>();
         stus = (List<Student>)hibernateTemplate.find(hql,name);
         return stus;
     }

     @Override
     public List<Student> selectAll() {
         List<Student> stus = new ArrayList<Student>();
         stus = (List<Student>)hibernateTemplate.find("from Student");
         return stus;
     }


 }

四：spring的配置文件

1.JDBC配置

2.sessionFactory ，这里边要配上Hibernate.cfg.xml的内容

3.hibernateTemplate

 <?xml version="1.0" encoding="UTF-8"?>
 <beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:tx="http://www.springframework.org/schema/tx"
        xmlns:aop="http://www.springframework.org/schema/aop"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:context="http://www.springframework.org/schema/context"
        xsi:schemaLocation="http://www.springframework.org/schema/beans
             http://www.springframework.org/schema/beans/spring-beans-2.5.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
             http://www.springframework.org/schema/context
             http://www.springframework.org/schema/context/spring-context-2.5.xsd">

     <context:annotation-config />
     <context:component-scan base-package="com.rt" />


   <!-- 1.JDBC配置：dataSource -->
     <bean
         class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
         <property name="locations">
             <value>classpath:jdbc.properties</value>
         </property>
     </bean>
     <bean id="dataSource" destroy-method="close"
         class="org.apache.commons.dbcp.BasicDataSource">
         <property name="driverClassName"
             value="${jdbc.driverClassName}" />
         <property name="url" value="${jdbc.url}" />
         <property name="username" value="${jdbc.username}" />
         <property name="password" value="${jdbc.password}" />
     </bean>

 <!-- 2.sessionFactory -->
     <bean id="sessionFactory"
         class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
         <!-- hibernate具体配置,分项写在下边 -->
         <property name="hibernateProperties">
             <props>
                 <prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop>
                 <prop key="hibernate.show_sql">true</prop>
                 <prop key="hibernate.hbm2ddl.auto">update</prop>
             </props>
         </property>
         <!-- 注入dataSource对象 -->
         <property name="dataSource" ref="dataSource" />

         <!-- 搜索带Annotation的实体 -->
         <property name="packagesToScan">
             <list>
                 <value>com.rt.sidemo.model</value>
                 <!--<value>com.rt.sidemo....</value> -->
             </list>
         </property>

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



 </beans>

JDBC的配置

 jdbc.driverClassName=oracle.jdbc.driver.OracleDriver
 jdbc.url=jdbc:oracle:thin:@localhost:1521:ORCL
 jdbc.username=scott
 jdbc.password=890307

五：test

 public class StudentServiceTest
 {
     @Test
     public void testAdd() throws Exception {

         //Spring读取spring配置信息
         ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext-common.xml");
         //相当于从代理类得到具体实例，由xml决定怎么选择类实例化
         StudentService service01 = (StudentService)ctx.getBean("StudentService");

         Student stu = new Student();//手动组装User实例 u
         //stu.setStudentid(？？？); 用自动增长序列
         stu.setName("Spring+Hibernate");
         stu.setAge(777);
         service01.add(stu);//把组装好的u传给xml实例化的service

         ctx.destroy();
     }

     @Test
     public void testDelById() throws Exception {
         ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext-common.xml");
         StudentService service01 = (StudentService)ctx.getBean("StudentService");

         service01.delById(23);//只需要把id传给实例化的service

         ctx.destroy();
     }

     @Test
     public void testGetAll() throws Exception {
         ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext-common.xml");
         StudentService service01 = (StudentService)ctx.getBean("StudentService");

         System.out.println("查询全部：");
         List<Student> stusAll = (List<Student>)service01.getAll();
         for(int i=0;i<stusAll.size();i++)
         {
             System.out.println(stusAll.get(i));
         }
         ctx.destroy();
     }

     @Test
     public void testUpdateStudent() throws Exception {
         ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext-common.xml");
         StudentService service01 = (StudentService)ctx.getBean("StudentService");

         Student stu = new Student();//手动组装User实例 u
         stu.setStudentid(25);
         stu.setName("SH");
         stu.setAge(777);
         service01.updateStudent(stu);//把组装好的u传给spring实例化的service

         ctx.destroy();
     }

     @Test
     public void testSelectByName() throws Exception {
         ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext-common.xml");
         StudentService service01 = (StudentService)ctx.getBean("StudentService");

         System.out.println("查询全部：");
         String name = "SH";
         List<Student> stusAll = (List<Student>)service01.selectByName(name);
         for(int i=0;i<stusAll.size();i++)
         {
             System.out.println(stusAll.get(i));
         }
         ctx.destroy();
     }

 }