SSH整合
maven项目web3.0配置
<!--第一步就是配置maven-compiler-plugin插件-->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<!-- 第二步修改web.xml由2.3至3.1 -->
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_1.xsd"
id="WebApp_ID" version="3.1">
<!--第三步-->
右键项目--》buildpath--》
注意:先修改成3.1apply后再把√√上,再apply一次
1、SSH导入所需要的jar依赖
pom.xml(注意版本兼容)
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.zking</groupId>
<artifactId>1106_ssh</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>1106_ssh Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<hibernate.version>5.2.12.Final</hibernate.version>
<mysql.version>5.1.44</mysql.version>
<spring.version>5.0.1.RELEASE</spring.version>
<struts2.version>2.5.13</struts2.version>
<slf4j.version>1.7.7</slf4j.version>
<log4j.version>2.9.1</log4j.version>
<disruptor.version>3.2.0</disruptor.version>
<junit.version>4.12</junit.version>
<servlet.version>4.0.0</servlet.version>
<jstl.version>1.2</jstl.version>
<standard.version>1.1.2</standard.version>
<tomcat-jsp-api.version>8.0.47</tomcat-jsp-api.version>
</properties>
<dependencies>
<!-- 1、hibernate相关(5.2.12.Final) -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>${hibernate.version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-c3p0</artifactId>
<version>${hibernate.version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-ehcache</artifactId>
<version>${hibernate.version}</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<!-- 2、spring相关(5.0.1.RELEASE) -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 3、struts2相关(2.5.13) -->
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-core</artifactId>
<version>${struts2.version}</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-spring-plugin</artifactId>
<version>${struts2.version}</version>
</dependency>
<!-- 4、log配置 -->
<!-- log配置:Log4j2 + Slf4j -->
<!-- slf4j核心包 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>${slf4j.version}</version>
<scope>runtime</scope>
</dependency>
<!--用于与slf4j保持桥接 -->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-slf4j-impl</artifactId>
<version>${log4j.version}</version>
</dependency>
<!--核心log4j2jar包 -->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>${log4j.version}</version>
</dependency>
<!--web工程需要包含log4j-web,非web工程不需要 -->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-web</artifactId>
<version>${log4j.version}</version>
<scope>runtime</scope>
</dependency>
<!--需要使用log4j2的AsyncLogger需要包含disruptor -->
<dependency>
<groupId>com.lmax</groupId>
<artifactId>disruptor</artifactId>
<version>${disruptor.version}</version>
</dependency>
<!-- 5、other -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>${servlet.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>${jstl.version}</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>${standard.version}</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jsp-api</artifactId>
<version>${tomcat-jsp-api.version}</version>
</dependency>
</dependencies>
<build>
<finalName>1106_ssh</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
</plugins>
</build>
</project>
2、spring和hibernate整合
2.1 导入ehcache.xml
2.2 导入log4j2.xml
2.3 集成hibernate
spring.hibernate.xml中
<?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:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
<!-- 1、注册jdbc相关的配置文件 -->
<context:property-placeholder location="classpath:db.properties"/>
<!-- 2、配置数据库连接池c3p0 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="user" value="${db.username}"></property>
<property name="password" value="${db.password}"></property>
<property name="driverClass" value="${db.driverClass}"></property>
<property name="jdbcUrl" value="${db.jdbcUrl}"></property>
<!--初始化时获取的连接数,取值应在minPoolSize与maxPoolSize之间。Default: 3 -->
<property name="initialPoolSize" value="${db.initialPoolSize}"></property>
<!--连接池中保留的最大连接数。Default: 15 -->
<property name="maxPoolSize" value="${db.maxPoolSize}"></property>
<!--连接池中保留的最小连接数。 -->
<property name="minPoolSize" value="${db.minPoolSize}" />
<!--最大空闲时间,60秒内未使用则连接被丢弃。若为0则永不丢弃。Default: 0 -->
<property name="maxIdleTime" value="${db.maxIdleTime}" />
<!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 -->
<property name="acquireIncrement" value="${db.acquireIncrement}" />
<!--JDBC的标准参数,用以控制数据源内加载的PreparedStatements数量。但由于预缓存的statements 属于单个connection而不是整个连接池。
所以设置这个参数需要考虑到多方面的因素。如果maxStatements与maxStatementsPerConnection均为0,则缓存被关闭。Default:
0 -->
<property name="maxStatements" value="${db.maxStatements}" />
<!--每60秒检查所有连接池中的空闲连接。Default: 0 -->
<property name="idleConnectionTestPeriod" value="${db.idleConnectionTestPeriod}" />
<!--定义在从数据库获取新连接失败后重复尝试的次数。Default: 30 -->
<property name="acquireRetryAttempts" value="${db.acquireRetryAttempts}" />
<!--获取连接失败将会引起所有等待连接池来获取连接的线程抛出异常。但是数据源仍有效 保留,并在下次调用getConnection()的时候继续尝试获取连接。
如果设为true,那么在尝试 获取连接失败后该数据源将申明已断开并永久关闭。Default: false -->
<property name="breakAfterAcquireFailure" value="${db.breakAfterAcquireFailure}" />
<!--因性能消耗大请只在需要的时候使用它。如果设为true那么在每个connection提交的 时候都将校验其有效性。建议使用idleConnectionTestPeriod
或automaticTestTable 等方法来提升连接测试的性能。Default: false -->
<property name="testConnectionOnCheckout" value="${db.breakAfterAcquireFailure}" />
</bean>
<!-- 3、配置sessionfactory相关信息 -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<!-- 数据源 -->
<property name="dataSource">
<ref bean="dataSource" />
</property>
<!-- hibernate相关属性 -->
<property name="hibernateProperties">
<props>
<prop key="dialect">org.hibernate.dialect.MySQLDialect</prop>
<!--spring与Hibernate集成无法显示sql语句问题,请见集成后hibernate无法显示sql语句.txt-->
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.format_sql">true</prop>
</props>
</property>
<!-- 实体映射文件 -->
<property name="mappingResources">
<list>
<value>com/zking/book/entity/Book.hbm.xml</value>
</list>
</property>
</bean>
<!-- 4、配置事务 -->
<!--声明式事务配置开始 -->
<!--
静态代理:
一个代理对象->一个目标对象
BookProxy(BookBizImpl+myMethedBeforeAdvice)->bookBiz
OrderProxy(OrderBizImpl+myMethedBeforeAdvice)->OrderBiz
动态代理:
一个代理对象->多个目标对象
-->
<!--1) 开启自动代理 -->
<aop:aspectj-autoproxy />
<!--2) 事务管理器 -->
<bean id="transactionManager"
class="org.springframework.orm.hibernate5.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<!--3) 定义事务特性 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="edit*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="del*" propagation="REQUIRED" />
<tx:method name="remove*" propagation="REQUIRED" />
<tx:method name="load*" propagation="REQUIRED" read-only="true" />
<tx:method name="list*" propagation="REQUIRED" read-only="true" />
<tx:method name="select*" propagation="REQUIRED" read-only="true" />
<tx:method name="query*" propagation="REQUIRED" read-only="true" />
<tx:method name="do*" propagation="REQUIRED" />
</tx:attributes>
</tx:advice>
<!--4) 定义切入点 -->
<aop:config>
<!-- pointcut属性用来定义一个切入点,分成四个部分理解 [* ][*..][*Biz][.*(..)] -->
<!-- A: 返回类型,*表示返回类型不限 -->
<!-- B: 包名,*..表示包名不限 -->
<!-- C: 类或接口名,*Biz表示类或接口必须以Biz结尾 -->
<!-- D: 方法名和参数,*(..)表示方法名不限,参数类型和个数不限 -->
<aop:advisor advice-ref="txAdvice"
pointcut="execution(* *..*Biz.*(..))" />
</aop:config>
<!-- 声明式事务配置结束 -->
<!-- 5、配置hibernateTemplate -->
<bean class="org.springframework.orm.hibernate5.HibernateTemplate" id="hibernateTemplate">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<!-- 6、分模块开发(只base模块) -->
<bean class="com.zking.base.entity.BaseEntity" abstract="true" id="baseEntity"></bean>
<bean class="com.zking.base.dao.BaseDao" id="baseDao" abstract="true">
<property name="hibernateTemplate" ref="hibernateTemplate"></property>
</bean>
<bean class="com.zking.base.biz.BaseBiz" abstract="true" id="baseBiz"></bean>
<bean class="com.zking.base.web.BaseAction" abstract="true" id="baseAction"></bean>
</beans>
spring-context.xml中
<?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:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
<import resource="classpath:spring-hibernate.xml"/>
<import resource="classpath:spring-book.xml"/>
</beans>
注:baseDao继承HibernateDaoSupport是为了拿到hibernatetemplate
拿到hibernatetemplate是为了操作数据库,比如调用save、update、load方法等
biz的用途:service:专门用来处理业务
execution(* …Biz.(…))
–>代表了针对于以biz结尾的接口或者实现类,切入事务控制
分析:action的转账方法中,调用了biz的transfer转账方法。
biz的transfer转账方法->张三转账的delete操作,李四账户执行add操作
action层的代码如下
Transaction tx = session.beginTransaction();
account.transfer();
–>等价于
accountdao.delete();
accountdao.add();
tx.commit();
vs
Dao的用途:
execution( *…Dao.(…))
–>代表了针对于以biz结尾的接口或者实现类,切入事务控制
张三向李四转账为例,意味着:
分析:action的转账方法中,张三账户的delete操作,李四的账户执行add操作
Dao的切入方式会产生如下代码
Transaction tx = session.beginTransaction();
account.delete();
tx.commit();
Transaction tx2 = session.beginTransaction();
account.add();
tx2.commit();
1、耗性能(开了两次事务)
2、不能保持事务的一致性
web整合struts、spring
web.xm
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_1.xsd"
id="WebApp_ID" version="3.1">
<display-name>Archetype Created Web Application</display-name>
<!-- 1、整合spring -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-context.xml</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<!-- 2、整合struts2 -->
<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>*.action</url-pattern>
</filter-mapping>
<!-- 3、添加过滤器 -->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>
org.springframework.web.filter.CharacterEncodingFilter
</filter-class>
<async-supported>true</async-supported>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
在spring-book.xml中
<?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:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
<bean class="com.zking.book.dao.BookDao" parent="baseDao" id="bookDao"></bean>
<bean class="com.zking.book.biz.impl.BookBizImpl" parent="baseBiz" id="bookBiz">
<property name="bookDao" ref="bookDao"></property>
</bean>
<bean class="com.zking.book.web.BookAction" parent="baseAction" id="bookAction">
<property name="bookBiz" ref="bookBiz"></property>
</bean>
</beans>
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