SSH 整合笔记

SSH 整合笔记

1. 加入 struts2 的环境

1.1 加入必须 jar 包

Commons-fileupload-*.jar

Freemarker-*.jar

Ognl-*.jar

Struts1-core-*.jar

Xwork-core-*.jar

1.2 配置 web.xml, 将请求交给 struts 来处理

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< filter >

< filter-name > s </ filter-name >

< filter-class > org.apache.struts2.dispatcher.ng.

filter.StrutsPrepareAndExecuteFilter </ filter-class >

</ filter >

< filter-mapping >

< filter-name > s </ filter-name >

< url-pattern > /* </ url-pattern >

</ filter-mapping >

1.3 加入 struts.xml 文件

---- 加入 struts 的 tld 标签库引入

|--- 在已经加入的 struts2-core-*.jar 包 struts-2.0.dtd 中有

1.4 写一个 Action, 并配置到 struts.xml 中

----com.xcz.action.UserAction

------------------------------------------------------------------

< package name = "struts" extends = "struts-default" >

< action name = "userdo" class = "com.xcz.action.UserAction" >

< result name = "index" > index.jsp </ result >

</ action >

</ package >

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2. 加入 Hibernate 的环境

2.1 加入必须的 jar 包

antlr-*.jar// 其他工具辅助包

commons-collection-*.jar// 必须的集合类工具包

dom4j-*.jar//hibernate 靠其读写 xml 配置文件

hibernate*.jar// 核心包

jta-*.jar//jta 规范包

db-connection-java-*.jar// 数据库连接包

// 以下的包 hibernate 版本不一样，存在差异

javassist-*.jar// 字节码增强包（更高版本已经换成 [cglib.jar]+[asm.jar]+[asm-attrs.jar] ）

slf4j-api-*.jar//

slf4j-nop-*.jar//

2.2 加入 hibernate.cfg.xml

---- 加入 hibernate 的 tld 标签库引入 ( 注意配置文件引入的 dtd 头，这里是 Hibernate Configuration DTD )

|--- 在已经加入的 hibernate3.jar 包中 /org/hibernate/hibernate-configuration-3.0.dtd 中有

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<! DOCTYPE hibernate-configuration PUBLIC

"-//Hibernate/Hibernate Configuration DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd" >

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---- 写入数据库连接属性

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< hibernate-configuration >

< session-factory >

< property name = "hibernate.connection.driver_class" > com.mysql.jdbc.Driver </ property >

< property name = "hibernate.connection.url" > jdbc:mysql://localhost :3306/db_ssh </ property >

< property name = "hibernate.dialect" > org.hibernate.dialect.MySQLDialect </ property >

< property name = "hibernate.connection.username" > root </ property >

< property name = "hibernate.connection.password" > mysql </ property >

< property name = "show_sql" > true </ property >

</ session-factory >

</ hibernate-configuration >

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2.3 写实体类 User( 多个对应一个 Derpartment) 、 Derpartment( 对应一个 Set<User>)

2.4 在实体类的包下分别写 xml 映射文件 Xxxx.hbm.xml( 注意配置文件引入的 dtd 头，这里是 Hibernate Mapping DTD )

User.hbm.xml

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<! DOCTYPE hibernate-mapping PUBLIC

"-//Hibernate/Hibernate Mapping DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >

< hibernate-mapping >

< class name = "com.xcz.domain.User" table = "t_user" >

< id name = "id" column = "id" length = "36" >

< generator class = "uuid.hex" />

</ id >

< property name = "username" length = "20" />

< property name = "password" length = "20" />

<!—- 多对一指向 deptid ( 外键 )-->

< many-to-one name = "dept" column = "deptid" class = "com.xcz.domain.Department" />

</ class >

</ hibernate-mapping >

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Derpartment.hbm.xml

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<! DOCTYPE hibernate-mapping PUBLIC

"-//Hibernate/Hibernate Mapping DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >

< hibernate-mapping >

< class name = "com.xcz.domain.Department" table = "t_dept" >

< id name = "id" column = "id" length = "36" >

< generator class = "uuid.hex" />

</ id >

< property name = "dname" length = "50" />

< set name = "users" inverse = "true" >

< key column = "deptid" /> <!—column 就是 多对一指向的属性 -->

< one-to-many class = "com.xcz.domain.User" />

</ set >

</ class >

</ hibernate-mapping >

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3. 加入 Spring

3.1 加入 Spring 的必须 jar 包以及整合的 jar 包

Aspectjrt.jar

Aspectjweaver.jar

Commons-loggin.jar

Log4j-*.jar

Spring.jar

Struts2-spring-plugin-*.jar

3.2 配置 web.xml( 文件加载的时候 )

注：在 SSH 中，接收请求的 Servlet 是由 Struts 的 ActionServlet 来配置的，因此此时就不能够使用 DispatchServlet 来接受请求。为了能在此时能过加载 Spring 的 Bean 配置，可以在 Web.xml 中配置一个监听器，并通过 <context-param> 指定 xml 文件名。

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< context-param >

< param-name > contextConfigLocation </ param-name >

< param-value > classpath *:applicationContext*.xml </ param-value >

</ context-param >

< listener >

< listener-class > org.springframework.web.context.ContextLoaderListener </ listener-class >

</ listener >

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3.3 添加 spring 的配置文件 applicationContext.xml

注：加入配置文件引入的 dtd 头

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< 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"

xsi:schemaLocation = "

htt p://www.springframework.org/schema/beans ht tp://www.springframework.org/schema/beans/spring-beans-2.5.xsd

http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd

http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd" >

<bean>

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3.4 在 applicationContext*.xml 中 SessionFactory 的配置

注：配置 SessionFactory 对象，为 DAO 层提供 Hibernate 的数据库连接对象，其中需要注入 2.2 中配置的 DataSource 。

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< bean name = "sessionFactory" class = "org.springframework.orm.hibernate3.LocalSessionFactoryBean" >

< property name = "configLocation" value = "class:hibernate.cfg.xml" />

</ bean >

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3.5 在 applicationContext*.xml 中配置事务

注：为 SessionFactory 对象添加事务配置组件，并注入 3.3 中配置的 SessionFactory 对象。

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< bean name = "transactionManager" class = "org.springframework.orm.hibernate3.HibernateTransactionManager" >

< property name = "sessionFactory" ref = "sessionFactory" ></ property >

</ bean >

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3.6 编写 DAO

注： Dao 需要继承 HibernateDaoSupport

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public class UserDaoImpl extends HibernateDaoSupport implements UserDao {

public void addUser(User user) {

this.getHibernateTemplate().save(user);

}

public User getUser(String id) {

return (User) this.getHibernateTemplate().get(User.class, id);

}

public void updateUser(User user) {

this.getHibernateTemplate().update(user);

}

public User getByUsername(String username) {

return (User) this.getSession().createQuery(

"from User where username = ?").setParameter(0, username).uniqueResult();

}

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3.7 在 applicationContext*.xml 中配置 DAO 中的 Bean ，并注入 SessionFactory

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< bean id = "userDao" class = "com.chinasofti.dao.impl.UserDaoImpl" >

< property name = "sessionFactory" >

< ref bean = "sessionFactory" />

</ property >

</ bean >

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3.8 写一个 Action, 并配置到 applicationContext*.xml ，并注入需要的类

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< bean id = "userAction" class = "com.chinasofti.action.UserActoin" scope = "prototype" >

< property name = "userService" ref = "userService" />

< property name = "departmentService" ref = "departmentService" />

</ bean >

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