Spring-Lesson4

三大框架架构(整合原理)

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导包(41个)

hibernate

hibernate/lib/required

antlr-2.7.7.jar
dom4j-1.6.1.jar
geronimo-jta_1.1_spec-1.1.1.jar
hibernate-commons-annotations-5.0.1.Final.jar
hibernate-core-5.0.7.Final.jar
hibernate-jpa-2.1-api-1.0.0.Final.jar
jandex-2.0.0.Final.jar
javassist-3.18.1-GA.jar
jboss-logging-3.3.0.Final.jar

hibernate/lib/jpa | java persist api java的持久化规范(接口)

数据库驱动

mysql-connector-java-5.1.7-bin.jar

struts2

struts-blank.war/WEB-INF/lib/* 

asm-3.3.jar
asm-commons-3.3.jar
asm-tree-3.3.jar
commons-fileupload-1.3.1.jar
commons-io-2.2.jar
commons-lang3-3.2.jar
freemarker-2.3.22.jar
log4j-api-2.2.jar
log4j-core-2.2.jar
ognl-3.0.6.jar
struts2-core-2.3.24.jar
xwork-core-2.3.24.jar

注意:javassist-3.18.1-GA.jar包与hibernate中的重复

struts2-spring-plugin-2.3.24.jar

注意:这个包一旦导入,那么struts2在启动时就会寻找spring容器.找不到将会抛出异常

spring

基本:4+2

core|beans|context|expression|logging|log4j

spring-beans-4.2.4.RELEASE.jar
spring-context-4.2.4.RELEASE.jar
spring-core-4.2.4.RELEASE.jar
spring-expression-4.2.4.RELEASE.jar
com.springsource.org.apache.commons.logging-1.1.1.jar
com.springsource.org.apache.log4j-1.2.15.jar

整合web:web包

spring-web

spring-web-4.2.4.RELEASE.jar

整合aop:4个

spring-aop|spring-aspect|aop联盟|aopweaving

spring-aop-4.2.4.RELEASE.jar
spring-aspects-4.2.4.RELEASE.jar
com.springsource.org.aopalliance-1.0.0.jar
com.springsource.org.aspectj.weaver-1.6.8.RELEASE.jar

整合Hibernate和事务:4个

spring-jdbc|spring-tx|c3p0|spring-orm

spring-jdbc-4.2.4.RELEASE.jar
spring-tx-4.2.4.RELEASE.jar
com.springsource.com.mchange.v2.c3p0-0.9.1.2.jar
spring-orm-4.2.4.RELEASE.jar

整junit4测试:test包

spring-test-4.2.4.RELEASE.jar

标签库（IDE提示用的）

standard.jar
jstl-1.2.jar

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单独配置spring容器

创建配置文件,并导入约束(4个)
beans|context|aop|tx

配置spring随项目启动(web.xml)

<!-- 让spring随web启动而创建的监听器 -->
  <listener>
      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!-- 配置spring配置文件位置参数 -->
  <context-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:applicationContext.xml</param-value>
  </context-param>

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单独配置struts2

配置struts2主配置文件

配置struts2核心过滤器到web.xml

<!-- struts2核心过滤器 -->
  <filter>
      <filter-name>struts2</filter-name>
      <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
  </filter>
  
  <filter-mapping>
      <filter-name>struts2</filter-name>
      <url-pattern>/*</url-pattern>
  </filter-mapping>

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struts2与spring整合

导包struts2-spring-plugin-2.3.24.jar(已经导入)

配置常量

WebContent\WEB-INF\lib\struts2-core-2.3.24.jar中

/org/apache/struts2/default.properties

### if specified, the default object factory can be overridden here
### Note: short-hand notation is supported in some cases, such as "spring"
###       Alternatively, you can provide a com.opensymphony.xwork2.ObjectFactory subclass name here
# struts.objectFactory = spring

### specifies the autoWiring logic when using the SpringObjectFactory.
### valid values are: name, type, auto, and constructor (name is the default)
struts.objectFactory.spring.autoWire = name

<!-- #  struts.objectFactory = spring    将action的创建交给spring容器    
        struts.objectFactory.spring.autoWire = name spring负责装配Action依赖属性
        -->
<constant name="struts.objectFactory" value="spring"></constant> 

整合方案1:struts2自己创建action,spring负责组装依赖属性

不推荐理由:最好由spring完整管理action的生命周期.spring中功能才应用到Action上.

整合方案2:spring负责创建action以及组装.

applicationContext.xml

<!-- action -->
<!-- 注意:Action对象作用范围一定是多例的.这样才符合struts2架构 -->
<bean name="userAction" class="cn.itcast.web.action.UserAction" scope="prototype" >
    <property name="userService" ref="userService" ></property>
</bean>

struts.xml

<package name="crm" namespace="/" extends="struts-default" >
    <global-exception-mappings>
        <exception-mapping result="error" exception="java.lang.RuntimeException"></exception-mapping>
    </global-exception-mappings>

    <!-- 整合方案1:class属性上仍然配置action的完整类名
            struts2仍然创建action,由spring负责组装Action中的依赖属性
     -->
     <!-- 
        整合方案2:class属性上填写spring中action对象的BeanName
            完全由spring管理action生命周期,包括Action的创建
            注意:需要手动组装依赖属性
      -->
    <action name="UserAction_*" class="userAction" method="{1}" >
        <result name="toHome" type="redirect" >/index.htm</result>
        <result name="error" >/login.jsp</result>
    </action>
</package>

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单独配置hibernate

导入实体类&orm元数据

配置主配置文件

<!-- 数据库驱动 -->
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
 <!-- 数据库url -->
<property name="hibernate.connection.url">jdbc:mysql:///crm_32</property>
 <!-- 数据库连接用户名 -->
<property name="hibernate.connection.username">root</property>
 <!-- 数据库连接密码 -->
<property name="hibernate.connection.password">1234</property>
<!-- 数据库方言
    注意: MYSQL在选择方言时,请选择最短的方言.
 -->
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>


<!-- 将hibernate生成的sql语句打印到控制台 -->
<property name="hibernate.show_sql">true</property>
<!-- 将hibernate生成的sql语句格式化(语法缩进) -->
<property name="hibernate.format_sql">true</property>
<!-- 
自动导出表结构. 自动建表
 -->
<property name="hibernate.hbm2ddl.auto">update</property>
 
 <!-- 引入实体配置文件 -->
<mapping resource="cn/itcast/domain/Customer.hbm.xml" />
<mapping resource="cn/itcast/domain/LinkMan.hbm.xml" />
<mapping resource="cn/itcast/domain/User.hbm.xml" />

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spring整合hibernate

整合原理

将sessionFactory对象交给spring容器管理

在spring中配置sessionFactory

两种配置方案:

<!-- 将SessionFactory配置到spring容器中 -->
<!-- 加载配置方案1:仍然使用外部的hibernate.cfg.xml配置信息 -->
<!-- <bean name="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean" >
    <property name="configLocation" value="classpath:hibernate.cfg.xml" ></property>
</bean> -->
<!-- 加载配置方案2:在spring配置中放置hibernate配置信息 -->
<bean name="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean" >
    <!-- 将连接池注入到sessionFactory, hibernate会通过连接池获得连接 -->
    <property name="dataSource" ref="dataSource" ></property>
    <!-- 配置hibernate基本信息 -->
    <property name="hibernateProperties">
        <props>
            <!--  必选配置 -->
        <!--     <prop key="hibernate.connection.driver_class" >com.mysql.jdbc.Driver</prop>
            <prop key="hibernate.connection.url" >jdbc:mysql:///crm_32</prop>
            <prop key="hibernate.connection.username" >root</prop>
            <prop key="hibernate.connection.password" >1234</prop> -->
            <prop key="hibernate.dialect" >org.hibernate.dialect.MySQLDialect</prop>
            
            <!--  可选配置 -->
            <prop key="hibernate.show_sql" >true</prop>
            <prop key="hibernate.format_sql" >true</prop>
            <prop key="hibernate.hbm2ddl.auto" >update</prop>
        </props>
    </property>
    <!-- 引入orm元数据,指定orm元数据所在的包路径,spring会自动读取包中的所有配置 -->
    <property name="mappingDirectoryLocations" value="classpath:cn/itcast/domain" ></property>
</bean> 

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spring整合c3p0连接池

1.配置db.properties

jdbc.jdbcUrl=jdbc:mysql:///crm_32
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.user=root
jdbc.password=root

2.引入连接池到spring中

<!-- 读取db.properties文件 -->
<context:property-placeholder location="classpath:db.properties" />
<!-- 配置c3p0连接池 -->
<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" >
    <property name="jdbcUrl" value="${jdbc.jdbcUrl}" ></property>
    <property name="driverClass" value="${jdbc.driverClass}" ></property>
    <property name="user" value="${jdbc.user}" ></property>
    <property name="password" value="${jdbc.password}" ></property>
</bean>

Hibernate中的数据库配置就可以注掉了

3.将连接池注入给SessionFactory

<bean name="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean" >
    <!-- 将连接池注入到sessionFactory, hibernate会通过连接池获得连接 -->
    <property name="dataSource" ref="dataSource" ></property> 

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spring整合hibernate环境操作数据库

Dao类创建:继承HibernateDaoSupport

hibernate模板的操作

import java.util.List;

import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.criterion.DetachedCriteria;
import org.hibernate.criterion.Restrictions;
import org.springframework.orm.hibernate5.HibernateCallback;
import org.springframework.orm.hibernate5.HibernateTemplate;
import org.springframework.orm.hibernate5.support.HibernateDaoSupport;

import cn.itcast.dao.UserDao;
import cn.itcast.domain.User;
//HibernateDaoSupport 为dao注入sessionFactory
public class UserDaoImpl extends HibernateDaoSupport implements UserDao {
    
    @Override
    public User getByUserCode(final String usercode) {
        //HQL
        return getHibernateTemplate().execute(new HibernateCallback<User>() {
            @Override
            public User doInHibernate(Session session) throws HibernateException {
                    String hql = "from User where user_code = ? ";
                    Query query = session.createQuery(hql);
                    query.setParameter(0, usercode);
                    User user = (User) query.uniqueResult();
                return user;
            }
        });

        //Criteria
        /*DetachedCriteria dc = DetachedCriteria.forClass(User.class);
        dc.add(Restrictions.eq("user_code", usercode));
        List<User> list = (List<User>) getHibernateTemplate().findByCriteria(dc);
        if(list != null && list.size()>0){
            return list.get(0);
        }else{
            return null;
        }*/
    }

    @Override
    public void save(User u) {
        getHibernateTemplate().save(u);
    }
}

spring中配置dao

<bean name="userDao" class="cn.itcast.dao.impl.UserDaoImpl" >
    <!-- 注入sessionFactory -->
    <property name="sessionFactory" ref="sessionFactory" ></property>
</bean>

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spring的aop事务

准备工作

<!-- 核心事务管理器 -->
<bean name="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager" >
    <property name="sessionFactory" ref="sessionFactory" ></property>
</bean>

xml配置aop事务

配置通知，配置织入

<!-- 配置通知 -->
<!-- <tx:advice id="txAdvice" transaction-manager="transactionManager" >
    <tx:attributes>
        <tx:method name="save*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
        <tx:method name="persist*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
        <tx:method name="update*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
        <tx:method name="modify*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
        <tx:method name="delete*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
        <tx:method name="remove*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
        <tx:method name="get*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="true" />
        <tx:method name="find*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="true" />
    </tx:attributes>
</tx:advice> -->
<!-- 配置将通知织入目标对象
配置切点
配置切面 -->
<!-- <aop:config>
    <aop:pointcut expression="execution(* cn.itcast.service.impl.*ServiceImpl.*(..))" id="txPc"/>
    <aop:advisor advice-ref="txAdvice" pointcut-ref="txPc" />
</aop:config> -->

注解配置aop事务

开启注解事务

<!-- 开启注解事务 -->
<tx:annotation-driven transaction-manager="transactionManager" />

service中注入dao

<bean name="userService" class="cn.itcast.service.impl.UserServiceImpl" >
    <property name="ud" ref="userDao" ></property>
</bean>

Service类中使用注解

import org.springframework.transaction.annotation.Isolation;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import cn.itcast.dao.UserDao;
import cn.itcast.domain.User;
import cn.itcast.service.UserService;

@Transactional(isolation=Isolation.REPEATABLE_READ,propagation=Propagation.REQUIRED,readOnly=true)
public class UserServiceImpl implements UserService{
    
    private UserDao ud;
    
    @Override
    public User getUserByCodePassword(User u) {
            //1 根据登陆名称查询登陆用户
            User existU = ud.getByUserCode(u.getUser_code());
            //2 判断用户是否存在.不存在=>抛出异常,提示用户名不存在
            if(existU==null){
                throw new RuntimeException("用户名不存在!");
            }
            //3 判断用户密码是否正确=>不正确=>抛出异常,提示密码错误
            if(!existU.getUser_password().equals(u.getUser_password())){
                throw new RuntimeException("密码错误!");
            }
            //4 返回查询到的用户对象
        
        return existU;
    }

    @Override
    @Transactional(isolation=Isolation.REPEATABLE_READ,propagation=Propagation.REQUIRED,readOnly=false)
    public void saveUser(User u) {
        ud.save(u);
    }

    public void setUd(UserDao ud) {
        this.ud = ud;
    }

}

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扩大session作用范围

为了避免使用懒加载时出现no-session问题.需要扩大session的作用范围

配置filter

<!-- 扩大session作用范围
      注意: 任何filter一定要在struts的filter之前调用
   -->
   <filter>
      <filter-name>openSessionInView</filter-name>
      <filter-class>org.springframework.orm.hibernate5.support.OpenSessionInViewFilter</filter-class>
  </filter>

<filter-mapping>
    <filter-name>openSessionInView</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

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练习:用户登录