ssh框架整合
前言:有人说,现在还是流行主流框架,ssm都出来很久了,更不要说ssh。我不以为然。现在许多公司所用的老项目还是ssh,如果改成主流框架,需要成本。再说比如金融it这一块,数据库dao层还是推荐使用的是hibernate,因为能够快速开发上手,除非是互联网,因涉及到高并发,dao层用的是mybatis,数据交互效率较快。所以,ssh不容忽略。
一、什么是ssh
ssh是 struts+spring+hibernate的一个集成框架,是目前比较流行的一种web应用程序开源框架。
集成ssh框架的系统从职责上分为四层:表示层、业务逻辑层、数据持久层和域模块层,以帮助开发人员在短期内搭建结构清晰、可复用性好、维护方便的web应用程序。其中使用struts作为系统的整体基础架构,负责mvc的分离,在struts框架的模型部分,控制业务跳转,利用hibernate框架对持久层提供支持,spring做管理,管理struts和hibernate。具体做法是:用面向对象的分析方法根据需求提出一些模型,将这些模型实现为基本的java对象,然后编写基本的dao(data access objects)接口,并给出hibernate的dao实现,采用hibernate架构实现的dao类来实现java类与数据库之间的转换和访问,最后由spring做管理,管理struts和hibernate。
---------百度百科
二、ssh所涉及的部分
三、快速部署环境
这里利用保存客户的小demo来演示整合ssh
1.导入所需jar包
1). struts2框架
* struts-2.3.24\apps\struts2-blank\web-inf\lib\*.jar -- struts2需要的所有jar包
* struts2-spring-plugin-2.3.24.jar ---struts2整合spring的插件包
2). hibernate框架
* hibernate-release-5.0.7.final\lib\required\*.jar -- hibernate框架需要的jar包
* slf4j-api-1.6.1.jar -- 日志接口
* slf4j-log4j12-1.7.2.jar -- 日志实现
* mysql-connector-java-5.1.7-bin.jar -- mysql的驱动包
3). spring框架
* ioc核心包
* aop核心包
* jdbc模板和事务核心包
* spring整合junit测试包
* spring整合hibernate核心包
* spring整合struts2核心包
2、在web.xml中配置spring与struts的相关代码
1)配置struts2核心过滤器
这里定义为拦截所有
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<!-- 配置核心过滤器 --> <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> |
2)配置spring的监听器
当服务启动时,就会先加载spring的配置文件
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<!-- 配置spring框架整合web的监听器 --> <listener> <listener- class >org.springframework.web.context.contextloaderlistener</listener- class > </listener> |
3)配置默认加载路径
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<!-- 监听器默认加载web-inf文件下,需要配置参数来加载指定文件 --> <context-param> <param-name>contextconfiglocation</param-name> <param-value>classpath:applicationcontext.xml</param-value> </context-param> |
总结:web.xml全部代码为
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<!-- 配置spring框架整合web的监听器 --> <listener> <listener- class >org.springframework.web.context.contextloaderlistener</listener- class > </listener> <!-- 监听器默认加载web-inf文件下,需要配置参数来加载指定文件 --> <context-param> <param-name>contextconfiglocation</param-name> <param-value>classpath:applicationcontext.xml</param-value> </context-param> <!-- 配置核心过滤器 --> <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> |
2、src下编写相关配置文件
1)spring:applicationcontext.xml
导入相关约束
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<?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:context= "http://www.springframework.org/schema/context" xmlns:aop= "http://www.springframework.org/schema/aop" 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/context http: //www.springframework.org/schema/context/spring-context.xsd http: //www.springframework.org/schema/aop http: //www.springframework.org/schema/aop/spring-aop.xsd http: //www.springframework.org/schema/tx http: //www.springframework.org/schema/tx/spring-tx.xsd"> </beans> |
2)hibernate:hibernate.cfg.xml
导入相关约束,并配置数据库
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<?xml version= "1.0" encoding= "utf-8" ?> <!doctype hibernate-configuration public "-//hibernate/hibernate configuration dtd 3.0//en" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd" > <hibernate-configuration> <session-factory> <!-- 必须配置 --> <property name= "hibernate.connection.driver_class" >com.mysql.jdbc.driver</property> <property name= "hibernate.connection.url" >jdbc:mysql: //192.168.174.130:3306/ssh</property> <property name= "hibernate.connection.username" >root</property> <property name= "hibernate.connection.password" >root</property> <property name= "hibernate.dialect" >org.hibernate.dialect.mysqldialect</property> <!-- 可选配置 --> <property name= "hibernate.show_sql" > true </property> <property name= "hibernate.format_sql" > true </property> <property name= "hibernate.hbm2ddl.auto" >update</property> <!-- 配置c3p0的连接池 --> <property name= "connection.provider_class" >org.hibernate.connection.c3p0connectionprovider</property> <!-- 不能配置绑定当前的线程的操作 --> <!-- 映射配置文件 --> <mapping resource= "com/clj/domain/customer.hbm.xml" /> </session-factory> </hibernate-configuration> |
3)配置log4j.properties
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### direct log messages to stdout ### log4j.appender.stdout=org.apache.log4j.consoleappender log4j.appender.stdout.target=system.err log4j.appender.stdout.layout=org.apache.log4j.patternlayout log4j.appender.stdout.layout.conversionpattern=%d{absolute} %5p %c{ 1 }:%l - %m%n ### direct messages to file mylog.log ### log4j.appender.file=org.apache.log4j.fileappender log4j.appender.file.file=c\:mylog.log log4j.appender.file.layout=org.apache.log4j.patternlayout log4j.appender.file.layout.conversionpattern=%d{absolute} %5p %c{ 1 }:%l - %m%n ### set log levels - for more verbose logging change 'info' to 'debug' ### log4j.rootlogger=info, stdout |
4)struts2:struts.xml
导入相关约束
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<?xml version= "1.0" encoding= "utf-8" ?> <!doctype struts public "-//apache software foundation//dtd struts configuration 2.1//en" "http://struts.apache.org/dtds/struts-2.3.dtd" > <struts> </struts> |
总结:src所需配置文件如图
3、配置dao层
定义一个接口和其实现类
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public interface customerdao { public void save(customer customer); } |
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public class customerdaoimpl implements customerdao { public void save(customer customer) { } } |
4、定义业务层接口和实现类
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package com.clj.service; import com.clj.domain.customer; public interface customerservice { public void save(customer customer); } |
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package com.clj.service; import org.springframework.transaction.annotation.transactional; import com.clj.dao.customerdao; import com.clj.domain.customer; /** * 客户的业务层 * @author administrator * */ public class customerserviceimpl implements customerservice{ //用来保存客户 public void save(customer customer) { } } |
5、定义pojo类
hibernate通过操作pojo类来操作数据库表,做到对象关系映射
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package com.clj.domain; public class customer { private long cust_id; private string cust_name; private long cust_user_id; private long cust_create_id; private string cust_source; private string cust_industry; private string cust_level; private string cust_linkman; private string cust_phone; private string cust_mobile; public long getcust_id() { return cust_id; } public void setcust_id( long cust_id) { this .cust_id = cust_id; } public string getcust_name() { return cust_name; } public void setcust_name(string cust_name) { this .cust_name = cust_name; } public long getcust_user_id() { return cust_user_id; } public void setcust_user_id( long cust_user_id) { this .cust_user_id = cust_user_id; } public long getcust_create_id() { return cust_create_id; } public void setcust_create_id( long cust_create_id) { this .cust_create_id = cust_create_id; } public string getcust_source() { return cust_source; } public void setcust_source(string cust_source) { this .cust_source = cust_source; } public string getcust_industry() { return cust_industry; } public void setcust_industry(string cust_industry) { this .cust_industry = cust_industry; } public string getcust_level() { return cust_level; } public void setcust_level(string cust_level) { this .cust_level = cust_level; } public string getcust_linkman() { return cust_linkman; } public void setcust_linkman(string cust_linkman) { this .cust_linkman = cust_linkman; } public string getcust_phone() { return cust_phone; } public void setcust_phone(string cust_phone) { this .cust_phone = cust_phone; } public string getcust_mobile() { return cust_mobile; } public void setcust_mobile(string cust_mobile) { this .cust_mobile = cust_mobile; } @override public string tostring() { return "customer [cust_id=" + cust_id + ", cust_name=" + cust_name + ", cust_user_id=" + cust_user_id + ", cust_create_id=" + cust_create_id + ", cust_source=" + cust_source + ", cust_industry=" + cust_industry + ", cust_level=" + cust_level + ", cust_linkman=" + cust_linkman + ", cust_phone=" + cust_phone + ", cust_mobile=" + cust_mobile + "]" ; } } |
6、定义customer.hbm.xml
此配置文件关乎customer这个pojo类,此文件需放在customer pojo类同个包下
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<?xml version= "1.0" encoding= "utf-8" ?> <!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.clj.domain.customer" table= "cst_customer" > <id name= "cust_id" column= "cust_id" > <generator class = "native" /> </id> <property name= "cust_name" column= "cust_name" /> <property name= "cust_user_id" column= "cust_user_id" /> <property name= "cust_create_id" column= "cust_create_id" /> <property name= "cust_source" column= "cust_source" /> <property name= "cust_industry" column= "cust_industry" /> <property name= "cust_level" column= "cust_level" /> <property name= "cust_linkman" column= "cust_linkman" /> <property name= "cust_phone" column= "cust_phone" /> <property name= "cust_mobile" column= "cust_mobile" /> </ class > </hibernate-mapping> |
项目构建大致图
四、demo之保存客户初步演示
这里先初略的定义持久层交给heibernate,业务层交个struts2,创建实例交给spring
1、定义一个保存客户的界面,利用form表单进行数据的提交
根据域名可知,这里利用的是struts2的通配符方式进行访问
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<form id=form1 name=form1 action= "${pagecontext.request.contextpath }/customer_add.action" method=post> <!--table部分省略--> </form> |
2、在struts.xml中配置接受请求,根据action名和方法跳转指定的action,执行指定的方法
spring整合struts2方式一:action由struts2框架管理
* 因为导入的struts2-spring-plugin-2.3.24.jar 包自带一个配置文件 struts-plugin.xml ,该配置文件中有如下代码
* <constant name="struts.objectfactory" value="spring" /> 开启一个常量,如果该常量开启,那么下面的常量就可以使用
* struts.objectfactory.spring.autowire = name,该常量是可以让action的类来自动装配bean对象!
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<?xml version= "1.0" encoding= "utf-8" ?> <!doctype struts public "-//apache software foundation//dtd struts configuration 2.1//en" "http://struts.apache.org/dtds/struts-2.3.dtd" > <struts> <!-- 配置包结构 --> < package name= "crm" extends = "struts-default" namespace= "/" > <!-- 配置客户的action --> <!-- 方式一:aciton由struts2框架管理--> <action name= "customer_*" class = "com.clj.web.action.customeraction" method= "{1}" /> </ package > </struts> |
3、在spring的applicationcontext.xml中配置相对应的bean以及事务
这里利用spring中ioc(控制反转)的特性,将创建实例的任务交给spring框架管理
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<bean id= "customerservice" class = "com.clj.service.customerserviceimpl" > <property name= "customerdao" ref= "customerdao" ></property> </bean> <bean id= "customerdao" class = "com.clj.dao.customerdaoimpl" > <property name= "hibernatetemplate" ref= "hibernatetemplate" /> </bean> <bean id= "hibernatetemplate" class = "org.springframework.orm.hibernate5.hibernatetemplate" > <!-- 注入sessionfactory --> <property name= "sessionfactory" /> </bean> </beans> |
4、编写持久层实现类相关代码
这里利用hibernate提供的模板类,内部封转了session,从而可以调用session中的方法
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/** * 持久层 * * @author administrator * */ public class customerdaoimpl implements customerdao { //将数据保存到数据库中(调用模板类(hibernate提供,内部封装了session)) private hibernatetemplate hibernatetemplate; public void sethibernatetemplate(hibernatetemplate hibernatetemplate) { this .hibernatetemplate = hibernatetemplate; } /** * 保存客户 */ public void save(customer customer) { system.out.println( "持久层:保存客户" ); hibernatetemplate().save(customer); } } |
5、编写业务层实现类相关代码
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package com.clj.service; import org.springframework.transaction.annotation.transactional; import com.clj.dao.customerdao; import com.clj.domain.customer; /** * 客户的业务层 * @author administrator * */ @transactional public class customerserviceimpl implements customerservice{ private customerdao customerdao; public void setcustomerdao(customerdao customerdao) { this .customerdao = customerdao; } //用来保存客户 public void save(customer customer) { system.out.println( "业务层,保存客户" ); customerdao.save(customer); } } |
6、编写action相关代码
这里通过struts2的模板类
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package com.clj.web.action; import org.apache.struts2.servletactioncontext; import org.springframework.web.context.webapplicationcontext; import org.springframework.web.context.support.webapplicationcontextutils; import com.clj.domain.customer; import com.clj.service.customerservice; import com.opensymphony.xwork2.actionsupport; import com.opensymphony.xwork2.modeldriven; /** * 客户的控制层 * @author administrator * */ public class customeraction extends actionsupport implements modeldriven<customer>{ //不要忘记手动new private customer customer= new customer(); public customer getmodel() { return customer; } //提供service成员属性,提供set方法 private customerservice customerservice; public void setcustomerservice(customerservice customerservice) { this .customerservice = customerservice; } /** * 保存客户 * @return */ public string add(){ system.out.println( "web层,保存客户" ); //方式一:创建web的工厂(action由struts2创建) webapplicationcontext context=webapplicationcontextutils.getwebapplicationcontext(servletactioncontext.getservletcontext()); customerservice cs=(customerservice) context.getbean( "customerservice" ); //调用方法 cs.save(customer); return none; } } |
五、项目优化之整合
1、 spring整合struts2方式二:action由spring框架管理
把具体的 action类配置文件applicatoncontext.xml的配置文件中,但是注意:struts.xml需要做修改
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<struts> <!-- 配置包结构 --> < package name= "crm" extends = "struts-default" namespace= "/" > <!-- 配置客户的action --> <!-- 方式一:aciton由struts2框架管理 <action name= "customer_*" class = "com.clj.web.action.customeraction" method= "{1}" />--> <!-- 方式二:action由spring管理, class 标签上只需要编写srping配置bean的id值既可以--> <action name= "customer_*" class = "customeraction" method= "{1}" ></action> </ package > </struts> |
2、在applicationcontext.xml中配置action类
注意:1)spring框架默认生成customeraction是单例的,而struts2框架是多例的。所以需要配置 scope="prototype"
2)此时没有struts2的自动装配,在action需要手动配置customerservice属性,并在action类中生成set方法
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<!-- 配置客户模块 --> <!-- 强调:配置的aciton,必须是多列的 --> <bean id= "customeraction" class = "com.clj.web.action.customeraction" scope= "prototype" > <!--注意:struts管理action时,基于其中有个struts-plugin的jar包,其中更改了一个 常量struts.objectfactory.spring.autowire = name将其打开了,可以自动装配,只需要提供set方法 但是此时action由spring管理,自动装配失效,所以需要手动进行配置注入 --> <property name= "customerservice" ref= "customerservice" ></property> </bean> |
3、.配置事务
spring整合hibernate方式一: (带有 hibernate.cfg.xml的配置文件。强调:不能加绑定当前线程的配置)
以前玩hibernate时,hibernate.cfg.xml都是由hibernate框架管理,其配置文件能生成sessionfactory,持久层加载此配置文件获取sessionfactory,从而创建工厂生成session,进行数据的增删改成,此时其配置文件应该交给spring管理,充分利用spring的ioc特性
spring框架提供了一个hibernatedaosupport的工具类,以后dao都可以继承该类!!在引入hibernate核心配置文件之前,得让dao层继承一个父类hibernatedaosupport,此父类内部封装了事务模板
看源码:
1)修改相对应的持久层实现类,让他继承hibernatedaosupport
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package com.clj.dao; import org.springframework.orm.hibernate5.hibernatetemplate; import org.springframework.orm.hibernate5.support.hibernatedaosupport; import com.clj.domain.customer; /** * 持久层 * 继承hibernatedaosupport,内部封装了hibernatetemplate * @author administrator * */ public class customerdaoimpl extends hibernatedaosupport implements customerdao { //将数据保存到数据库中(调用模板类(hibernate提供,内部封装了session)) /*private hibernatetemplate hibernatetemplate; public void sethibernatetemplate(hibernatetemplate hibernatetemplate) { this.hibernatetemplate = hibernatetemplate; }*/ /** * 保存客户 */ public void save(customer customer) { system.out.println( "持久层:保存客户" ); this .gethibernatetemplate().save(customer); } } |
2)修改业务层让,开启事务注解
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package com.clj.service; import org.springframework.transaction.annotation.transactional; import com.clj.dao.customerdao; import com.clj.domain.customer; /** * 客户的业务层 * @author administrator * */ @transactional public class customerserviceimpl implements customerservice{ private customerdao customerdao; public void setcustomerdao(customerdao customerdao) { this .customerdao = customerdao; } //用来保存客户 public void save(customer customer) { system.out.println( "业务层,保存客户" ); customerdao.save(customer); } } |
3)修改applicationcontext.xml文件
先引入hibernate配置文件
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<!-- 编写bean,名称都是固定的,由spring提供,用来加载hibernate.cfg.xml的配置文件--> <bean id= "sessionfactory" class = "org.springframework.orm.hibernate5.localsessionfactorybean" > <!-- 配置路径:当启动服务器时 ,该对象就会被创建,从而加载hibernate.cfg.xml文件,从而生成sessionfactory对象--> <property name= "configlocation" value= "classpath:hibernate.cfg.xml" /> </bean> |
配置平台事务管理:用来管理事务, 注意现在使用的是 hibernate框架,所以需要使用hibernate框架的事务管理器
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<!-- 先配置平台事务管理器 --> <bean id= "transactionmanager" class = "org.springframework.orm.hibernate5.hibernatetransactionmanager" > <!-- 注入事务,session能够管理事务,工厂能够创建session --> <property name= "sessionfactory" ref= "sessionfactory" /> </bean> |
开启事务注解
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<!-- 开启事务的注解 --> <tx:annotation-driven transaction-manager= "transactionmanager" /> |
去除模板类配置,并为持久层配置sessionfactory
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<!-- 以后,dao都需要继承hibernatedaosupport,注入sessionfactory --> <bean id= "customerdao" class = "com.clj.dao.customerdaoimpl" > <!--<property name= "hibernatetemplate" ref= "hibernatetemplate" />--> <!-- 这里不注入模板类,而是注入sessionfactory,因为模板需要session(封装了session)--> <property name= "sessionfactory" ref= "sessionfactory" /> </bean> |
全部代码如下
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<?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:context= "http://www.springframework.org/schema/context" xmlns:aop= "http://www.springframework.org/schema/aop" 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/context http: //www.springframework.org/schema/context/spring-context.xsd http: //www.springframework.org/schema/aop http: //www.springframework.org/schema/aop/spring-aop.xsd http: //www.springframework.org/schema/tx http: //www.springframework.org/schema/tx/spring-tx.xsd"> <!-- 编写bean,名称都是固定的,有spring提供,用来加载hibernate.cfg.xml的配置文件--> <bean id= "sessionfactory" class = "org.springframework.orm.hibernate5.localsessionfactorybean" > <!-- 配置路径:当启动服务器时 ,该对象就会被创建,从而加载hibernate.cfg.xml文件,从而生成sessionfactory对象--> <property name= "configlocation" value= "classpath:hibernate.cfg.xml" /> </bean> <!-- 先配置平台事务管理器 --> <bean id= "transactionmanager" class = "org.springframework.orm.hibernate5.hibernatetransactionmanager" > <!-- 注入事务,session能够管理事务,工厂能够创建session --> <property name= "sessionfactory" ref= "sessionfactory" /> </bean> <!-- 开启事务的注解 --> <tx:annotation-driven transaction-manager= "transactionmanager" /> <!-- 配置客户模块 --> <!-- 强调:配置的aciton,必须是多列的 --> <bean id= "customeraction" class = "com.clj.web.action.customeraction" scope= "prototype" > <!--注意:struts管理action时,基于其中有个struts-plugin的jar包,其中更改了一个 常量struts.objectfactory.spring.autowire = name将其打开了,可以自动装配,只需要提供set方法 但是此时action由spring管理,自动装配失效,所以需要手动进行配置注入 --> <property name= "customerservice" ref= "customerservice" ></property> </bean> <bean id= "customerservice" class = "com.clj.service.customerserviceimpl" > <property name= "customerdao" ref= "customerdao" ></property> </bean> <bean id= "customerdao" class = "com.clj.dao.customerdaoimpl" > <!--<property name= "hibernatetemplate" ref= "hibernatetemplate" />--> <!-- 这里不注入模板类,而是注入sessionfactory,因为模板需要session(封装了session)--> <property name= "sessionfactory" ref= "sessionfactory" /> </bean> <!-- 配置模板类(hibernate框架提供的,内部封装了session),此时交给spring管理,如果持久层继承了hibernatedaosupport,则无需配置--> <!-- <bean id= "hibernatetemplate" class = "org.springframework.orm.hibernate5.hibernatetemplate" > 注入sessionfactory <property name= "sessionfactory" /> </bean>--> </beans> |
4)修改action类
因为注入了业务层实现类,所以此时可以直接调用业务层方法,无须加载bean
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package com.clj.web.action; import org.apache.struts2.servletactioncontext; import org.springframework.web.context.webapplicationcontext; import org.springframework.web.context.support.webapplicationcontextutils; import com.clj.domain.customer; import com.clj.service.customerservice; import com.opensymphony.xwork2.actionsupport; import com.opensymphony.xwork2.modeldriven; /** * 客户的控制层 * @author administrator * */ public class customeraction extends actionsupport implements modeldriven<customer>{ //不要忘记手动new private customer customer= new customer(); public customer getmodel() { return customer; } //提供service成员属性,提供set方法 private customerservice customerservice; public void setcustomerservice(customerservice customerservice) { this .customerservice = customerservice; } /** * 保存客户 * @return */ public string add(){ system.out.println( "web层,保存客户" ); //方式一:创建web的工厂(action由struts2创建) /*webapplicationcontext context=webapplicationcontextutils.getwebapplicationcontext(servletactioncontext.getservletcontext()); customerservice cs=(customerservice) context.getbean("customerservice"); //调用方法 cs.save(customer);*/ customerservice.save(customer); return none; } } |
spring整合hibernate方式二: (不带有 hibernate.cfg.xml的配置文件)
这里准备删除hibernate的核心配置文件,在删除之前,需要将其配置文件中的相关内容配置到spring的applicatioincontext.xml文件中取
1、查看hibernate.cfg.xml文件中的相关内容
* 数据库连接基本参数(4大参数)
* hibernate相关的属性
* 连接池
* 映射文件
2、引入配置
引入连接池
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<!-- 先配置c3p0的连接池 --> <bean id= "datasource" class = "com.mchange.v2.c3p0.combopooleddatasource" > <property name= "driverclass" value= "com.mysql.jdbc.driver" /> <property name= "jdbcurl" value= "jdbc:mysql://192.168.174.130:3306/ssh" /> <property name= "user" value= "root" /> <property name= "password" value= "root" /> </bean> |
修改对应的sessionfactory: 因为已经没有了 hibernate.cfg.xml的配置文件,所以需要修改该配置,注入连接池
引入对象映射文件:因为已经没有了hibernate.cfg.xml的配置文件,不会扫描到该配置文件,需要注入
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<!-- 编写bean,名称都是固定的,有spring提供,用来加载hibernate.cfg.xml的配置文件--> <bean id= "sessionfactory" class = "org.springframework.orm.hibernate5.localsessionfactorybean" > <!--先加载连接池 --> <property name= "datasource" ref= "datasource" /> <!-- 加载方言,加载可选项 --> <property name= "hibernateproperties" > <props> <prop key= "hibernate.dialect" >org.hibernate.dialect.mysqldialect</prop> <prop key= "hibernate.show_sql" > true </prop> <prop key= "hibernate.format_sql" > true </prop> <prop key= "hibernate.hbm2ddl.auto" >update</prop> </props> </property> <!-- 引入映射的配置文件 --> <property name= "mappingresources" > <list> <value>com/clj/domain/customer.hbm.xml</value> </list> </property> </bean> |
现在:applicationcontext.xml全部代码如下
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<?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:context= "http://www.springframework.org/schema/context" xmlns:aop= "http://www.springframework.org/schema/aop" 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/context http: //www.springframework.org/schema/context/spring-context.xsd http: //www.springframework.org/schema/aop http: //www.springframework.org/schema/aop/spring-aop.xsd http: //www.springframework.org/schema/tx http: //www.springframework.org/schema/tx/spring-tx.xsd"> <!-- 先配置c3p0的连接池 --> <bean id= "datasource" class = "com.mchange.v2.c3p0.combopooleddatasource" > <property name= "driverclass" value= "com.mysql.jdbc.driver" /> <property name= "jdbcurl" value= "jdbc:mysql://192.168.174.130:3306/ssh" /> <property name= "user" value= "root" /> <property name= "password" value= "root" /> </bean> <!-- 编写bean,名称都是固定的,有spring提供,用来加载hibernate.cfg.xml的配置文件--> <bean id= "sessionfactory" class = "org.springframework.orm.hibernate5.localsessionfactorybean" > <!--先加载连接池 --> <property name= "datasource" ref= "datasource" /> <!-- 加载方言,加载可选项 --> <property name= "hibernateproperties" > <props> <prop key= "hibernate.dialect" >org.hibernate.dialect.mysqldialect</prop> <prop key= "hibernate.show_sql" > true </prop> <prop key= "hibernate.format_sql" > true </prop> <prop key= "hibernate.hbm2ddl.auto" >update</prop> </props> </property> <!-- 引入映射的配置文件 --> <property name= "mappingresources" > <list> <value>com/clj/domain/customer.hbm.xml</value> </list> </property> </bean> <!-- 先配置平台事务管理器 --> <bean id= "transactionmanager" class = "org.springframework.orm.hibernate5.hibernatetransactionmanager" > <!-- 注入事务,session能够管理事务,工厂能够创建session --> <property name= "sessionfactory" ref= "sessionfactory" /> </bean> <!-- 开启事务的注解 --> <tx:annotation-driven transaction-manager= "transactionmanager" /> <!-- 配置客户模块 --> <!-- 强调:配置的aciton,必须是多列的 --> <bean id= "customeraction" class = "com.clj.web.action.customeraction" scope= "prototype" > <!--注意:struts管理action时,基于其中有个struts-plugin的jar包,其中更改了一个 常量struts.objectfactory.spring.autowire = name将其打开了,可以自动装配,只需要提供set方法 但是此时action由spring管理,自动装配失效,所以需要手动进行配置注入 --> <property name= "customerservice" ref= "customerservice" ></property> </bean> <bean id= "customerservice" class = "com.clj.service.customerserviceimpl" > <property name= "customerdao" ref= "customerdao" ></property> </bean> <!-- 以后,dao都需要继承hibernatedaosupport,注入sessionfactory --> <bean id= "customerdao" class = "com.clj.dao.customerdaoimpl" > <!--<property name= "hibernatetemplate" ref= "hibernatetemplate" />--> <!-- 这里不注入模板类,而是注入sessionfactory,因为模板需要session(封装了session)--> <property name= "sessionfactory" ref= "sessionfactory" /> </bean> <!-- 配置模板类(hibernate框架提供的,内部封装了session),此时交给spring管理,如果持久层继承了hibernatedaosupport,则无需配置--> <!-- <bean id= "hibernatetemplate" class = "org.springframework.orm.hibernate5.hibernatetemplate" > 注入sessionfactory <property name= "sessionfactory" /> </bean>--> </beans> |
此时可以安心的删除hibernate.cfg.xml文件了
这样ssh整合完毕
六、hibernate模板常用方法
注意:以下代码省略了接口中的演示(偷了个懒,相信初学者不会看不懂)
1)插入:
持久层
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package com.clj.dao; import java.util.list; import org.hibernate.criterion.detachedcriteria; import org.springframework.orm.hibernate5.hibernatetemplate; import org.springframework.orm.hibernate5.support.hibernatedaosupport; import com.clj.domain.customer; /** * 持久层 * 继承hibernatedaosupport,内部封装了hibernatetemplate * @author administrator * */ public class customerdaoimpl extends hibernatedaosupport implements customerdao { @override public void update(customer customer) { // todo auto-generated method stub this .gethibernatetemplate().update(customer); } } |
业务层
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package com.clj.service; import java.util.list; import org.springframework.transaction.annotation.transactional; import com.clj.dao.customerdao; import com.clj.domain.customer; /** * 客户的业务层 * @author administrator * */ @transactional public class customerserviceimpl implements customerservice{ private customerdao customerdao; public void setcustomerdao(customerdao customerdao) { this .customerdao = customerdao; } @override public void update(customer customer) { // todo auto-generated method stub customerdao.update(customer); } } |
测试类
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package com.clj.test; import java.util.list; import javax.annotation.resource; import org.junit.test; import org.junit.runner.runwith; import org.springframework.test.context.contextconfiguration; import org.springframework.test.context.junit4.springjunit4classrunner; import com.clj.domain.customer; import com.clj.service.customerservice; /** * 测试hiberante模板类的简单方法 * @author administrator * */ @runwith (springjunit4classrunner. class ) @contextconfiguration ( "classpath:applicationcontext.xml" ) public class demo1 { @resource (name= "customerservice" ) private customerservice customerservice; /** * 测试插入 */ @test public void run1(){ customer customer= new customer(); customer.setcust_id(1l); customer.setcust_name( "测试" ); customerservice.update(customer); } } |
2)以下为指定查询、查询所有、离线查询代码
持久层
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package com.clj.dao; import java.util.list; import org.hibernate.criterion.detachedcriteria; import org.springframework.orm.hibernate5.hibernatetemplate; import org.springframework.orm.hibernate5.support.hibernatedaosupport; import com.clj.domain.customer; /** * 持久层 * 继承hibernatedaosupport,内部封装了hibernatetemplate * @author administrator * */ public class customerdaoimpl extends hibernatedaosupport implements customerdao { //将数据保存到数据库中(调用模板类(hibernate提供,内部封装了session)) /*private hibernatetemplate hibernatetemplate; public void sethibernatetemplate(hibernatetemplate hibernatetemplate) { this.hibernatetemplate = hibernatetemplate; }*/ /** * 保存客户 */ public void save(customer customer) { system.out.println("持久层:保存客户"); this.gethibernatetemplate().save(customer); } @override public void update(customer customer) { // todo auto-generated method stub this.gethibernatetemplate().update(customer); } /** * 通过主键查询 */ public customer getbyid(long id) { return this.gethibernatetemplate().get(customer.class, id); } /** * 查询所有 */ @override public list<customer> findall() { string sql="from customer"; list<customer> list=(list<customer>) this.gethibernatetemplate().find(sql); return list; } /** * qbc离线查询 */ @override public list<customer> findallbyqbc() { detachedcriteria criteria=detachedcriteria.forclass(customer. class ); list<customer> list=(list<customer>) this .gethibernatetemplate().findbycriteria(criteria); return list; } } |
业务层
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package com.clj.service; import java.util.list; import org.springframework.transaction.annotation.transactional; import com.clj.dao.customerdao; import com.clj.domain.customer; /** * 客户的业务层 * @author administrator * */ @transactional public class customerserviceimpl implements customerservice{ private customerdao customerdao; public void setcustomerdao(customerdao customerdao) { this .customerdao = customerdao; } //用来保存客户 public void save(customer customer) { system.out.println( "业务层,保存客户" ); customerdao.save(customer); } @override public void update(customer customer) { // todo auto-generated method stub customerdao.update(customer); } @override public customer getbyid( long id) { // todo auto-generated method stub return customerdao.getbyid(id); } @override public list<customer> findall() { return customerdao.findall(); } @override public list<customer> findallbyqbc() { // todo auto-generated method stub return customerdao.findallbyqbc(); } } |
测试类
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package com.clj.test; import java.util.list; import javax.annotation.resource; import org.junit.test; import org.junit.runner.runwith; import org.springframework.test.context.contextconfiguration; import org.springframework.test.context.junit4.springjunit4classrunner; import com.clj.domain.customer; import com.clj.service.customerservice; /** * 测试hiberante模板类的简单方法 * @author administrator * */ @runwith (springjunit4classrunner. class ) @contextconfiguration ( "classpath:applicationcontext.xml" ) public class demo1 { @resource (name= "customerservice" ) private customerservice customerservice; /** * 测试插入 */ @test public void run1(){ customer customer= new customer(); customer.setcust_id(1l); customer.setcust_name( "测试" ); customerservice.update(customer); } /** * 测试查询指定的客户 */ @test public void run2(){ customer customer=customerservice.getbyid(2l); system.out.println(customer); } /** * 查询所有的客户 */ @test public void run3(){ list<customer> list=customerservice.findall(); system.out.println(list); } /** * qbc(离线查询) */ @test public void run4(){ list<customer> list=customerservice.findallbyqbc(); system.out.println(list); } } |
七、关于ssh延迟加载问题
1. 使用延迟加载的时候,再web层查询对象的时候程序会抛出异常!
* 原因是延迟加载还没有发生sql语句,在业务层session对象就已经销毁了,所以查询到的javabean对象已经变成了托管态对象!
* 注意:一定要先删除javassist-3.11.0.ga.jar包(jar包冲突了)
2. 解决办法
spring框架提供了一个过滤器,让session对象在web层就创建,在web层销毁。只需要配置该过滤器即可
* 但是:要注意需要在struts2的核心过滤器之前进行,spring监听器之后配置
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<!-- 解决延迟加载的问题 --> <filter> <filter-name>opensessioninviewfilter</filter-name> <filter- class >org.springframework.orm.hibernate5.support.opensessioninviewfilter</filter- class > </filter> <filter-mapping> <filter-name>opensessioninviewfilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> |
3、演示延迟加载
持久层:调用load方法,此方法时延迟加载的
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/** * 延迟加载 */ @override public customer loadbyid( long id) { // todo auto-generated method stub return this .gethibernatetemplate().load(customer. class , id); } |
业务层
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@override public customer loadbyid( long id) { // todo auto-generated method stub return customerdao.loadbyid(id); } |
测试类
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@test public void run5(){ customer customer=customerservice.loadbyid(2l); system.out.println(customer); } |
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://www.cnblogs.com/cailijia52o/p/8724710.html