重拾Java EE——SSH整合

1 jar整合(总共39个)

SSH版本:
struts:2.3.15.3
hibernate : 3.6.10
spring: 3.2.0

1.1 struts(14个)

1.1.1基础包(13个)

  • 解压一个空的例子,直接拷贝里面的jar包即可
  • 路径:struts-2.3.15.3\apps\struts2-blank\WEB-INF\lib

模板技术 ,一般用于页面静态化
freemarker:扩展名:*.ftl
velocity :扩展名 *.vm

1.1.2 整合Spring

  • struts 整合spring:struts2-spring-plugin-2.3.15.3.jar

1.2 spring(15个)

1.2.1基础包(12个)

  • 基础(4个):4+1 , beans、core、context、expression , commons-logging (struts已经导入)
  • AOP(4个):aop联盟、spring aop 、aspect规范、spring aspect
  • db(2个):jdbc、tx
  • 测试(1个):test
  • web开发(1个):spring web

1.2.2 其他(3个)

  • 数据库驱动(1个):mysql
  • 连接池(1个):c3p0
  • 整合hibernate(1个):spring orm

1.2.3 Struts2+Spring

1.3 Hibernate(11个)

    1. 核心(1个)
      路径:%h%\hibernate3.jar
  • 2.必须(6个)
    路径:%h%\lib\required

  • 3.jpa规范 (1个)
    (java persistent api 持久api),hibernate注解开发 @Entity @Id 等
    路径:%h%\lib\jpa

  • 4.整合log4j(1个)
    导入 log4j…jar (struts已经导入)
    整合(过渡):slf4j-log4j12-1.7.5.jar

  • 5.二级缓存(2个)
    核心:ehcache-1.5.0.jar
    依赖:
    backport-util-concurrent-2.1.jar
    commons-logging (存在)

1.4 删除重复jar包



2 spring整合hibernate:有hibernate.cfg.xml

2.1 创建表

create table t_user(
  id int primary key auto_increment,
  username varchar(50),
  password varchar(32),
  age int 
);

2.2 PO 类

  • javabean
public class User {
    private Integer id;
    private String username;
    private String password;
    private Integer age;
  • 映射文件
  • 新建xml添加约束
    打开 路径:/org/hibernate/hibernate-mapping-3.0.dtd 配置文件,拷贝文件头部的约束即可

<!DOCTYPE hibernate-mapping PUBLIC 
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
    <class name="com.itheima.domain.User" table="t_user">
        <id name="id">
            <generator class="native"></generator>
        </id>
        <property name="username"></property>
        <property name="password"></property>
        <property name="age"></property>
    </class>

</hibernate-mapping>

2.3 dao层

  • spring提供 HibernateTemplate 用于操作PO对象,类似Hibernate Session对象。
public class UserDaoImpl implements UserDao {

    //需要spring注入模板
    private HibernateTemplate hibernateTemplate;
    public void setHibernateTemplate(HibernateTemplate hibernateTemplate) {
        this.hibernateTemplate = hibernateTemplate;
    }

    @Override
    public void save(User user) {
        this.hibernateTemplate.save(user);
    }

}

2.4 service层

public class UserServiceImpl implements UserService {

    private UserDao userDao;
    public void setUserDao(UserDao userDao) {
        this.userDao = userDao;
    }
    @Override
    public void register(User user) {
        userDao.save(user);
    }
}

2.5 hibernate.cfg.xml

  • 新建xml添加约束
    打开 路径:/org/hibernate/hibernate-configuration-3.0.dtd 配置文件,拷贝文件头部的约束即可
<session-factory>
        <!-- 1基本4项 -->
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.url">jdbc:mysql:///ee19_spring_day03</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.connection.password">1234</property>

        <!-- 2 配置方言 -->
        <property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>

        <!-- 3 sql语句 -->
        <property name="hibernate.show_sql">true</property>
        <property name="hibernate.format_sql">true</property>

        <!-- 4 自动生成表(一般没用) -->
        <property name="hibernate.hbm2ddl.auto">update</property>

        <!-- 5本地线程绑定 -->
        <property name="hibernate.current_session_context_class">thread</property>

        <!-- 导入映射文件 -->
        <mapping resource="com/itheima/domain/User.hbm.xml"/>

    </session-factory>

2.6 applicationContext.xml

2.6.1 添加命名空间

文件位置:/spring-framework-3.2.0.RELEASE-dist/spring-framework-3.2.0.RELEASE/docs/spring-framework-reference/html/xsd-config.html

打开之后,凑齐,注意添加对应的xsi:schemaLocation

xmlns:xsi
xmlns:aop
xmlns:tx
xmlns:context
<?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">

2.6.2 加载hibernate配置文件

<!-- 1 加载hibenrate.cfg.xml 获得SessionFactory 
        * configLocation确定配置文件位置
    -->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
    </bean>

    <!-- 2创建模板 
        * 底层使用session,session 有sessionFactory获得
    -->
    <bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>

2.6.3 dao和service

<!-- 3 dao -->
    <bean id="userDao" class="com.itheima.dao.impl.UserDaoImpl">
        <property name="hibernateTemplate" ref="hibernateTemplate"></property>
    </bean>

    <!-- 4 service -->
    <bean id="userService" class="com.itheima.service.impl.UserServiceImpl">
        <property name="userDao" ref="userDao"></property>
    </bean>

2.6.4 事务管理

<!-- 5 事务管理 -->
    <!-- 5.1 事务管理器 :HibernateTransactionManager -->
    <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager" >
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>
    <!-- 5.2 事务详情 ,给ABC进行具体事务设置 -->
    <tx:advice id="txAdvice" transaction-manager="txManager">
        <tx:attributes>
            <tx:method name="register"/>
        </tx:attributes>
    </tx:advice>
    <!-- 5.3 AOP编程,ABCD 筛选 ABC  -->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.itheima.service..*.*(..))"/>
    </aop:config>

2.7 测试

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations="classpath:applicationContext.xml")
public class TestApp {

    @Autowired
    private UserService userService;

    @Test
    public void demo01(){
        User user = new User();
        user.setUsername("jack");
        user.setPassword("1234");
        user.setAge(18);

        userService.register(user);
    }
}


3 spring整合hibernate:没有hibernate.cfg.xml

  • 删除hibernate.cfg.xml文件,但需要保存文件内容,将其配置spring中
  • 修改dao层,继承HibernateDaoSupport

3.1 修改spring,配置SessionFactory

<!-- 1.1加载properties文件 -->
    <!-- 1.2 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:///ee19_spring_day03"></property>
        <property name="user" value="root"></property>
        <property name="password" value="1234"></property>
    </bean>

    <!-- 1.3配置 LocalSessionFactoryBean,获得SessionFactory 
        * configLocation确定配置文件位置
            <property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
        1)dataSource 数据源
        2)hibernateProperties hibernate其他配置项
        3) 导入映射文件
            mappingLocations ,确定映射文件位置,需要“classpath:” ,支持通配符 【】
                <property name="mappingLocations" value="classpath:com/itheima/domain/User.hbm.xml"></property>
                <property name="mappingLocations" value="classpath:com/itheima/domain/*.hbm.xml"></property>
            mappingResources ,加载执行映射文件,从src下开始 。不支持通配符*
                <property name="mappingResources" value="com/itheima/domain/User.hbm.xml"></property>
            mappingDirectoryLocations ,加载指定目录下的,所有配置文件
                <property name="mappingDirectoryLocations" value="classpath:com/itheima/domain/"></property>
            mappingJarLocations , 从jar包中获得映射文件
    -->
    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.format_sql">true</prop>
                <prop key="hibernate.hbm2ddl.auto">update</prop>
                <prop key="hibernate.current_session_context_class">thread</prop>
            </props>
        </property>
        <property name="mappingLocations" value="classpath:com/itheima/domain/*.hbm.xml"></property>
    </bean>

3.2 修改dao,使用HibernateDaoSupport

  • 继承HibernateDaoSupport
// 底层需要SessionFactory,自动创建HibernateTemplate模板
public class UserDaoImpl extends HibernateDaoSupport implements UserDao {

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

}
  • spring 删除模板,给dao注入SessionFactory
    <!-- 3 dao -->
    <bean id="userDao" class="com.itheima.dao.impl.UserDaoImpl">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>



4 struts整合spring:spring创建action

1.编写action类,并将其配置给spring ,spring可以注入service
2.编写struts.xml
3.表单jsp页面
4.web.xml 配置
1.确定配置文件contextConfigLocation
2.配置监听器 ContextLoaderListener
3.配置前端控制器 StrutsPrepareAndExecuteFitler

4.1 action类

  • 通用
public class UserAction extends ActionSupport implements ModelDriven<User> {

    //1 封装数据
    private User user = new User();

    @Override
    public User getModel() {
        return user;
    }

    //2 service
    private UserService userService;
    public void setUserService(UserService userService) {
        this.userService = userService;
    }

-  功能
/**
     * 注册
     * @return
     */
    public String register(){
        userService.register(user);
        return "success";
    }

4.2 spring配置

<!-- 6 配置action -->
    <bean id="userAction" class="com.itheima.web.action.UserAction" scope="prototype">
        <property name="userService" ref="userService"></property>
    </bean>

4.3 struts配置

解压一个空的例子,直接拷贝里面的 struts.xml 修改即可
路径:struts-2.3.15.3\apps\struts2-blank\WEB-INF\classes\struts.xml

<struts>
    <!-- 开发模式 -->
    <constant name="struts.devMode" value="true" />

    <package name="default" namespace="/" extends="struts-default">
        <!-- 底层自动从spring容器中通过名称获得内容, getBean("userAction") -->
        <action name="userAction_*" class="userAction" method="{1}">
            <result name="success">/messag.jsp</result>
        </action>
    </package>
</struts>

4.4 jsp表单

<form action="${pageContext.request.contextPath}/userAction_register" method="post">
        用户名:<input type="text" name="username"/> <br/>
        密码:<input type="password" name="password"/> <br/>
        年龄:<input type="text" name="age"/> <br/>
        <input type="submit" />
    </form>

4.5 配置web.xml

<!-- 1 确定spring xml位置 -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>
  <!-- 2 spring监听器 -->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!-- 3 struts 前端控制器 -->
  <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>


5 struts整合spring:struts创建action

  • 删除spring action配置
  • struts
<package name="default" namespace="/" extends="struts-default">
        <!-- 底层自动从spring容器中通过名称获得内容, getBean("userAction") -->
        <action name="userAction_*" class="com.itheima.web.action.UserAction" method="{1}">
            <result name="success">/messag.jsp</result>
        </action>
    </package>
  • 要求:Action类中,必须提供service名称与 spring配置文件一致。(如果名称一样,将自动注入)

分析:
1. struts 配置文件
default.properties ,常量配置文件
struts-default.xml ,默认核心配置文件
struts-plugins.xml ,插件配置文件
struts.xml,自定义核心配置文件
常量的使用,后面配置项,将覆盖前面的。

2.default.properties ,此配置文件中确定 按照【名称】自动注入
/org/apache/struts2/default.properties

  1. struts-plugins.xml ,struts整合spring

    <constant name="struts.objectFactory" value="spring" />
    

    struts的action将有spring创建

总结,之后action有spring创建,并按照名称自动注入

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转载自blog.csdn.net/u011446177/article/details/79999135