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>
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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>
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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>
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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>
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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>
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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>
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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
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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>
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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) {
}
}
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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) {
}
}
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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
+ "]" ;
}
}
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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>
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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>
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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>
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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>
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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);
}
}
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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);
}
}
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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;
}
}
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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>
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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>
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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);
}
}
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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);
}
}
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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>
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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>
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开启事务注解
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<!-- 开启事务的注解 -->
<tx:annotation-driven transaction-manager= "transactionmanager" />
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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>
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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>
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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;
}
}
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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>
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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>
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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>
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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);
}
}
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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);
}
}
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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);
}
}
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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;
}
}
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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();
}
}
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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);
}
}
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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>
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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);
}
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业务层
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@override
public customer loadbyid( long id) {
// todo auto-generated method stub
return customerdao.loadbyid(id);
}
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测试类
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@test
public void run5(){
customer customer=customerservice.loadbyid(2l);
system.out.println(customer);
}
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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