spring学习笔记 -- day14 基于注解的整合

一、基于注解整合要明确

1、注解整合仍然使用上面的环境，就是把xml的配置全部换成注解

2、spring的注解整合有两种方式，一种是用xml文件，一种是纯注解。

3、hibernate注解整合是把实体类映射改为JPA注解映射

二、spring的配置使用注解实现

1、配置spring核心配置文件加载时要扫描的包

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xmlns:aop="http://www.springframework.org/schema/aop"       xmlns:tx="http://www.springframework.org/schema/tx"        xmlns:context="http://www.springframework.org/schema/context"       xsi:schemaLocation="http://www.springframework.org/schema/beans           http://www.springframework.org/schema/beans/spring-beans.xsd          http://www.springframework.org/schema/tx           http://www.springframework.org/schema/tx/spring-tx.xsd           http://www.springframework.org/schema/aop            http://www.springframework.org/schema/aop/spring-aop.xsd           http://www.springframework.org/schema/context            http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 配置spring在创建容器时要扫描的包 --><context:component-scan base-package="cn.itcast"></context:component-scan></beans>

2、配置spring的事务管理器、jdbc连接配置

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xmlns:aop="http://www.springframework.org/schema/aop"       xmlns:tx="http://www.springframework.org/schema/tx"        xmlns:context="http://www.springframework.org/schema/context"       xsi:schemaLocation="http://www.springframework.org/schema/beans           http://www.springframework.org/schema/beans/spring-beans.xsd          http://www.springframework.org/schema/tx           http://www.springframework.org/schema/tx/spring-tx.xsd           http://www.springframework.org/schema/aop            http://www.springframework.org/schema/aop/spring-aop.xsd           http://www.springframework.org/schema/context            http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 配置spring在创建容器时要扫描的包 --><context:component-scan base-package="cn.itcast"></context:component-scan><!-- 开启spring对注解事务的支持 --><tx:annotation-driven transaction-manager="transactionManager"/><!-- 配置事务管理器 --><bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager"><property name="sessionFactory" ref="sessionFactory"></property></bean><!-- 配置HibernateTemplate --><bean id="hibernateTemplate" class="org.springframework.orm.hibernate5.HibernateTemplate"><property name="sessionFactory" ref="sessionFactory"></property></bean><!-- 配置一个SessionFactory --><bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean"><!-- 1.连接数据库的信息 --><property name="dataSource" ref="dataSource"></property><!-- 2.hibernate的基本配置 --><property name="hibernateProperties"><props><!-- 数据库的方言 --><prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop><!-- 是否显示SQL语句 --><prop key="hibernate.show_sql">true</prop><!-- 是否格式化SQL语句 --><prop key="hibernate.format_sql">false</prop><!-- 选择生成DDL语句的策略 --><prop key="hibernate.hbm2ddl.auto">update</prop><!-- 把session绑定到当前线程上   --><prop key="hibernate.current_session_context_class">org.springframework.orm.hibernate5.SpringSessionContext</prop></props></property><!-- 3.映射文件的位置 --><property name="mappingLocations">              <array>                  <value>classpath:cn/itcast/domain/*.hbm.xml</value>              </array>          </property>  </bean><!-- 配置数据源 --><bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"><property name="driverClass" value="com.mysql.jdbc.Driver"></property><property name="jdbcUrl" value="jdbc:mysql://localhost:3306/crm_ee247"></property><property name="user" value="root"></property><property name="password" value="1234"></property></bean></beans>

3、编写dao实现类代码

package cn.itcast.dao.impl;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.orm.hibernate5.HibernateTemplate;import org.springframework.stereotype.Repository;import cn.itcast.dao.ICustomerDao;import cn.itcast.domain.Customer;/** * 客户的持久层实现类 * @author wingzhe *  此类可以用于基于XML和基于注解的配置。因为在类中有独立的HibernateTemplate定义 *  但是如果用于基于xml的配置从第17行代码到第21行代码都是重复的 */@Repository("customerDao")public class CustomerDaoImpl implements ICustomerDao {@Autowiredprivate HibernateTemplate hibernateTemplate;@Overridepublic void saveCustomer(Customer customer) {hibernateTemplate.save(customer);}@Overridepublic List<Customer> findAllCustomer() {return (List<Customer>) hibernateTemplate.find("from Customer");}}

4、编写service层实现类

package cn.itcast.service.impl;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import org.springframework.transaction.annotation.Propagation;import org.springframework.transaction.annotation.Transactional;import cn.itcast.dao.ICustomerDao;import cn.itcast.domain.Customer;import cn.itcast.service.ICustomerService;/** * 客户的业务层实现类 * @author wingzhe * */@Service("customerService")@Transactional(propagation=Propagation.REQUIRED,readOnly=false)public class CustomerServiceImpl implements ICustomerService {@Autowiredprivate ICustomerDao customerDao;@Overridepublic void saveCustomer(Customer customer) {customerDao.saveCustomer(customer);}@Override@Transactional(propagation=Propagation.SUPPORTS,readOnly=true)public List<Customer> findAllCustomer() {return customerDao.findAllCustomer();}}

5、编写动作类

package cn.itcast.web.action;import java.util.List;import org.apache.struts2.convention.annotation.Action;import org.apache.struts2.convention.annotation.Namespace;import org.apache.struts2.convention.annotation.ParentPackage;import org.apache.struts2.convention.annotation.Result;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.context.annotation.Scope;import org.springframework.stereotype.Controller;import com.opensymphony.xwork2.ActionSupport;import com.opensymphony.xwork2.ModelDriven;import cn.itcast.domain.Customer;import cn.itcast.service.ICustomerService;/** * Customer的动作类 * @author wingzhe * */@Controller("customerAction")@Scope("prototype")public class CustomerAction extends ActionSupport implements ModelDriven<Customer> {private Customer customer = new Customer();@Autowiredprivate ICustomerService customerService;@Overridepublic Customer getModel() {return customer;}/** * 保存客户  * @return */public String addCustomer(){customerService.saveCustomer(customer);return "addCustomer";}/** * 查询所有客户 * @return */private List<Customer> customers;public String findAllCustomer(){customers = customerService.findAllCustomer();return "findAllCustomer";}/** * 获取添加客户页面 * @return */public String addUICustomer(){return "addUICustomer";}public List<Customer> getCustomers() {return customers;}public void setCustomers(List<Customer> customers) {this.customers = customers;}}

三、hibernate映射使用注解配置实现

1、编写javaBean

package cn.itcast.domain;import java.io.Serializable;import javax.persistence.Column;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.GenerationType;import javax.persistence.Id;import javax.persistence.Table;/** * 客户的实体类 * @author wingzhe * javax.persistence包下的注解 * JPA规范 */@Entity@Table(name="cst_customer")public class Customer implements Serializable {@Id@GeneratedValue(strategy=GenerationType.IDENTITY)@Column(name="cust_id")private Long custId;@Column(name="cust_name")private String custName;@Column(name="cust_source")private String custSource;@Column(name="cust_industry")private String custIndustry;@Column(name="cust_level")private String custLevel;@Column(name="cust_address")private String custAddress;@Column(name="cust_phone")private String custPhone;public Long getCustId() {return custId;}public void setCustId(Long custId) {this.custId = custId;}public String getCustName() {return custName;}public void setCustName(String custName) {this.custName = custName;}public String getCustSource() {return custSource;}public void setCustSource(String custSource) {this.custSource = custSource;}public String getCustIndustry() {return custIndustry;}public void setCustIndustry(String custIndustry) {this.custIndustry = custIndustry;}public String getCustLevel() {return custLevel;}public void setCustLevel(String custLevel) {this.custLevel = custLevel;}public String getCustAddress() {return custAddress;}public void setCustAddress(String custAddress) {this.custAddress = custAddress;}public String getCustPhone() {return custPhone;}public void setCustPhone(String custPhone) {this.custPhone = custPhone;}@Overridepublic String toString() {return "Customer [custId=" + custId + ", custName=" + custName + ", custSource=" + custSource+ ", custIndustry=" + custIndustry + ", custLevel=" + custLevel + ", custAddress=" + custAddress+ ", custPhone=" + custPhone + "]";}}

2、在spring配置文件中指定使用JPA的javaBean位置

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xmlns:aop="http://www.springframework.org/schema/aop"       xmlns:tx="http://www.springframework.org/schema/tx"        xmlns:context="http://www.springframework.org/schema/context"       xsi:schemaLocation="http://www.springframework.org/schema/beans           http://www.springframework.org/schema/beans/spring-beans.xsd          http://www.springframework.org/schema/tx           http://www.springframework.org/schema/tx/spring-tx.xsd           http://www.springframework.org/schema/aop            http://www.springframework.org/schema/aop/spring-aop.xsd           http://www.springframework.org/schema/context            http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 配置spring在创建容器时要扫描的包 --><context:component-scan base-package="cn.itcast"></context:component-scan><!-- 开启spring对注解事务的支持 --><tx:annotation-driven transaction-manager="transactionManager"/><!-- 配置事务管理器 --><bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager"><property name="sessionFactory" ref="sessionFactory"></property></bean><!-- 配置HibernateTemplate --><bean id="hibernateTemplate" class="org.springframework.orm.hibernate5.HibernateTemplate"><property name="sessionFactory" ref="sessionFactory"></property></bean><!-- 配置一个SessionFactory --><bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean"><!-- 1.连接数据库的信息 --><property name="dataSource" ref="dataSource"></property><!-- 2.hibernate的基本配置 --><property name="hibernateProperties"><props><!-- 数据库的方言 --><prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop><!-- 是否显示SQL语句 --><prop key="hibernate.show_sql">true</prop><!-- 是否格式化SQL语句 --><prop key="hibernate.format_sql">false</prop><!-- 选择生成DDL语句的策略 --><prop key="hibernate.hbm2ddl.auto">update</prop><!-- 把session绑定到当前线程上   --><prop key="hibernate.current_session_context_class">org.springframework.orm.hibernate5.SpringSessionContext</prop></props></property><!-- 3.映射文件的位置 --><property name="packagesToScan"><array><value>cn.itcast.domain</value></array></property></bean><!-- 配置数据源 --><bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"><property name="driverClass" value="com.mysql.jdbc.Driver"></property><property name="jdbcUrl" value="jdbc:mysql://localhost:3306/crm_ee247"></property><property name="user" value="root"></property><property name="password" value="1234"></property></bean></beans>

四、struts2的配置使用注解实现

1、拷贝struts2注解的jar包

2、编写动作类

package cn.itcast.web.action;import java.util.List;import org.apache.struts2.convention.annotation.Action;import org.apache.struts2.convention.annotation.Namespace;import org.apache.struts2.convention.annotation.ParentPackage;import org.apache.struts2.convention.annotation.Result;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.context.annotation.Scope;import org.springframework.stereotype.Controller;import com.opensymphony.xwork2.ActionSupport;import com.opensymphony.xwork2.ModelDriven;import cn.itcast.domain.Customer;import cn.itcast.service.ICustomerService;/** * Customer的动作类 * @author zhy * */@Controller("customerAction")@Scope("prototype")@ParentPackage("struts-default")@Namespace("/customer")public class CustomerAction extends ActionSupport implements ModelDriven<Customer> {private Customer customer = new Customer();@Autowiredprivate ICustomerService customerService;@Overridepublic Customer getModel() {return customer;}/** * 保存客户  * @return */@Action(value="addCustomer",results={@Result(name="addCustomer",type="redirect",location="/jsp/success.jsp")})public String addCustomer(){customerService.saveCustomer(customer);return "addCustomer";}/** * 查询所有客户 * @return */private List<Customer> customers;@Action(value="findAllCustomer",results={@Result(name="findAllCustomer",type="dispatcher",location="/jsp/customer/list.jsp")})public String findAllCustomer(){customers = customerService.findAllCustomer();return "findAllCustomer";}/** * 获取添加客户页面 * @return */@Action(value="addUICustomer",results={@Result(name="addUICustomer",type="dispatcher",location="/jsp/customer/add.jsp")})public String addUICustomer(){return "addUICustomer";}public List<Customer> getCustomers() {return customers;}public void setCustomers(List<Customer> customers) {this.customers = customers;}}

五、项目整体预览图