ssh框架整合
前言:有人說,現(xiàn)在還是流行主流框架,ssm都出來很久了,更不要說ssh。我不以為然。現(xiàn)在許多公司所用的老項(xiàng)目還是ssh,如果改成主流框架,需要成本。再說比如金融it這一塊,數(shù)據(jù)庫dao層還是推薦使用的是hibernate,因?yàn)槟軌蚩焖匍_發(fā)上手,除非是互聯(lián)網(wǎng),因涉及到高并發(fā),dao層用的是mybatis,數(shù)據(jù)交互效率較快。所以,ssh不容忽略。
一、什么是ssh
ssh是 struts+spring+hibernate的一個(gè)集成框架,是目前比較流行的一種web應(yīng)用程序開源框架。
集成ssh框架的系統(tǒng)從職責(zé)上分為四層:表示層、業(yè)務(wù)邏輯層、數(shù)據(jù)持久層和域模塊層,以幫助開發(fā)人員在短期內(nèi)搭建結(jié)構(gòu)清晰、可復(fù)用性好、維護(hù)方便的web應(yīng)用程序。其中使用struts作為系統(tǒng)的整體基礎(chǔ)架構(gòu),負(fù)責(zé)mvc的分離,在struts框架的模型部分,控制業(yè)務(wù)跳轉(zhuǎn),利用hibernate框架對持久層提供支持,spring做管理,管理struts和hibernate。具體做法是:用面向?qū)ο蟮姆治龇椒ǜ鶕?jù)需求提出一些模型,將這些模型實(shí)現(xiàn)為基本的java對象,然后編寫基本的dao(data access objects)接口,并給出hibernate的dao實(shí)現(xiàn),采用hibernate架構(gòu)實(shí)現(xiàn)的dao類來實(shí)現(xiàn)java類與數(shù)據(jù)庫之間的轉(zhuǎn)換和訪問,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、快速部署環(huán)境
這里利用保存客戶的小demo來演示整合ssh
1.導(dǎo)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 -- 日志實(shí)現(xiàn)
* mysql-connector-java-5.1.7-bin.jar -- mysql的驅(qū)動包
3). spring框架
* ioc核心包
* aop核心包
* jdbc模板和事務(wù)核心包
* spring整合junit測試包
* spring整合hibernate核心包
* spring整合struts2核心包
2、在web.xml中配置spring與struts的相關(guān)代碼
1)配置struts2核心過濾器
這里定義為攔截所有
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<!-- 配置核心過濾器 --> <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的監(jiān)聽器
當(dāng)服務(wù)啟動時(shí),就會先加載spring的配置文件
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<!-- 配置spring框架整合web的監(jiān)聽器 --> <listener> <listener- class >org.springframework.web.context.contextloaderlistener</listener- class > </listener> |
3)配置默認(rèn)加載路徑
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<!-- 監(jiān)聽器默認(rèn)加載web-inf文件下,需要配置參數(shù)來加載指定文件 --> <context-param> <param-name>contextconfiglocation</param-name> <param-value>classpath:applicationcontext.xml</param-value> </context-param> |
總結(jié):web.xml全部代碼為
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<!-- 配置spring框架整合web的監(jiān)聽器 --> <listener> <listener- class >org.springframework.web.context.contextloaderlistener</listener- class > </listener> <!-- 監(jiān)聽器默認(rèn)加載web-inf文件下,需要配置參數(shù)來加載指定文件 --> <context-param> <param-name>contextconfiglocation</param-name> <param-value>classpath:applicationcontext.xml</param-value> </context-param> <!-- 配置核心過濾器 --> <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下編寫相關(guān)配置文件
1)spring:applicationcontext.xml
導(dǎo)入相關(guān)約束
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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
導(dǎo)入相關(guān)約束,并配置數(shù)據(jù)庫
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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> <!-- 必須配置 --> <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> <!-- 可選配置 --> <property name= "hibernate.show_sql" > true </property> <property name= "hibernate.format_sql" > true </property> <property name= "hibernate.hbm2ddl.auto" >update</property> <!-- 配置c3p0的連接池 --> <property name= "connection.provider_class" >org.hibernate.connection.c3p0connectionprovider</property> <!-- 不能配置綁定當(dāng)前的線程的操作 --> <!-- 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
導(dǎo)入相關(guān)約束
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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> |
總結(jié):src所需配置文件如圖
3、配置dao層
定義一個(gè)接口和其實(shí)現(xiàn)類
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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、定義業(yè)務(wù)層接口和實(shí)現(xiàn)類
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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; /** * 客戶的業(yè)務(wù)層 * @author administrator * */ public class customerserviceimpl implements customerservice{ //用來保存客戶 public void save(customer customer) { } } |
5、定義pojo類
hibernate通過操作pojo類來操作數(shù)據(jù)庫表,做到對象關(guān)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、定義customer.hbm.xml
此配置文件關(guān)乎customer這個(gè)pojo類,此文件需放在customer pojo類同個(gè)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> |
項(xiàng)目構(gòu)建大致圖
四、demo之保存客戶初步演示
這里先初略的定義持久層交給heibernate,業(yè)務(wù)層交個(gè)struts2,創(chuàng)建實(shí)例交給spring
1、定義一個(gè)保存客戶的界面,利用form表單進(jìn)行數(shù)據(jù)的提交
根據(jù)域名可知,這里利用的是struts2的通配符方式進(jìn)行訪問
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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中配置接受請求,根據(jù)action名和方法跳轉(zhuǎn)指定的action,執(zhí)行指定的方法
spring整合struts2方式一:action由struts2框架管理
* 因?yàn)閷?dǎo)入的struts2-spring-plugin-2.3.24.jar 包自帶一個(gè)配置文件 struts-plugin.xml ,該配置文件中有如下代碼
* <constant name="struts.objectfactory" value="spring" /> 開啟一個(gè)常量,如果該常量開啟,那么下面的常量就可以使用
* struts.objectfactory.spring.autowire = name,該常量是可以讓action的類來自動裝配bean對象!
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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> <!-- 配置包結(jié)構(gòu) --> < package name= "crm" extends = "struts-default" namespace= "/" > <!-- 配置客戶的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中配置相對應(yīng)的bean以及事務(wù)
這里利用spring中ioc(控制反轉(zhuǎn))的特性,將創(chuàng)建實(shí)例的任務(wù)交給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、編寫持久層實(shí)現(xiàn)類相關(guān)代碼
這里利用hibernate提供的模板類,內(nèi)部封轉(zhuǎn)了session,從而可以調(diào)用session中的方法
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/** * 持久層 * * @author administrator * */ public class customerdaoimpl implements customerdao { //將數(shù)據(jù)保存到數(shù)據(jù)庫中(調(diào)用模板類(hibernate提供,內(nèi)部封裝了session)) private hibernatetemplate hibernatetemplate; public void sethibernatetemplate(hibernatetemplate hibernatetemplate) { this .hibernatetemplate = hibernatetemplate; } /** * 保存客戶 */ public void save(customer customer) { system.out.println( "持久層:保存客戶" ); hibernatetemplate().save(customer); } } |
5、編寫業(yè)務(wù)層實(shí)現(xiàn)類相關(guān)代碼
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package com.clj.service; import org.springframework.transaction.annotation.transactional; import com.clj.dao.customerdao; import com.clj.domain.customer; /** * 客戶的業(yè)務(wù)層 * @author administrator * */ @transactional public class customerserviceimpl implements customerservice{ private customerdao customerdao; public void setcustomerdao(customerdao customerdao) { this .customerdao = customerdao; } //用來保存客戶 public void save(customer customer) { system.out.println( "業(yè)務(wù)層,保存客戶" ); customerdao.save(customer); } } |
6、編寫action相關(guān)代碼
這里通過struts2的模板類
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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; /** * 客戶的控制層 * @author administrator * */ public class customeraction extends actionsupport implements modeldriven<customer>{ //不要忘記手動new private customer customer= new customer(); public customer getmodel() { return customer; } //提供service成員屬性,提供set方法 private customerservice customerservice; public void setcustomerservice(customerservice customerservice) { this .customerservice = customerservice; } /** * 保存客戶 * @return */ public string add(){ system.out.println( "web層,保存客戶" ); //方式一:創(chuàng)建web的工廠(action由struts2創(chuàng)建) webapplicationcontext context=webapplicationcontextutils.getwebapplicationcontext(servletactioncontext.getservletcontext()); customerservice cs=(customerservice) context.getbean( "customerservice" ); //調(diào)用方法 cs.save(customer); return none; } } |
五、項(xiàng)目優(yōu)化之整合
1、 spring整合struts2方式二:action由spring框架管理
把具體的 action類配置文件applicatoncontext.xml的配置文件中,但是注意:struts.xml需要做修改
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<struts> <!-- 配置包結(jié)構(gòu) --> < package name= "crm" extends = "struts-default" namespace= "/" > <!-- 配置客戶的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 標(biāo)簽上只需要編寫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類
注意:1)spring框架默認(rèn)生成customeraction是單例的,而struts2框架是多例的。所以需要配置 scope="prototype"
2)此時(shí)沒有struts2的自動裝配,在action需要手動配置customerservice屬性,并在action類中生成set方法
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<!-- 配置客戶模塊 --> <!-- 強(qiáng)調(diào):配置的aciton,必須是多列的 --> <bean id= "customeraction" class = "com.clj.web.action.customeraction" scope= "prototype" > <!--注意:struts管理action時(shí),基于其中有個(gè)struts-plugin的jar包,其中更改了一個(gè) 常量struts.objectfactory.spring.autowire = name將其打開了,可以自動裝配,只需要提供set方法 但是此時(shí)action由spring管理,自動裝配失效,所以需要手動進(jìn)行配置注入 --> <property name= "customerservice" ref= "customerservice" ></property> </bean> |
3、.配置事務(wù)
spring整合hibernate方式一: (帶有 hibernate.cfg.xml的配置文件。強(qiáng)調(diào):不能加綁定當(dāng)前線程的配置)
以前玩hibernate時(shí),hibernate.cfg.xml都是由hibernate框架管理,其配置文件能生成sessionfactory,持久層加載此配置文件獲取sessionfactory,從而創(chuàng)建工廠生成session,進(jìn)行數(shù)據(jù)的增刪改成,此時(shí)其配置文件應(yīng)該交給spring管理,充分利用spring的ioc特性
spring框架提供了一個(gè)hibernatedaosupport的工具類,以后dao都可以繼承該類!!在引入hibernate核心配置文件之前,得讓dao層繼承一個(gè)父類hibernatedaosupport,此父類內(nèi)部封裝了事務(wù)模板
看源碼:
1)修改相對應(yīng)的持久層實(shí)現(xiàn)類,讓他繼承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; /** * 持久層 * 繼承hibernatedaosupport,內(nèi)部封裝了hibernatetemplate * @author administrator * */ public class customerdaoimpl extends hibernatedaosupport implements customerdao { //將數(shù)據(jù)保存到數(shù)據(jù)庫中(調(diào)用模板類(hibernate提供,內(nèi)部封裝了session)) /*private hibernatetemplate hibernatetemplate; public void sethibernatetemplate(hibernatetemplate hibernatetemplate) { this.hibernatetemplate = hibernatetemplate; }*/ /** * 保存客戶 */ public void save(customer customer) { system.out.println( "持久層:保存客戶" ); this .gethibernatetemplate().save(customer); } } |
2)修改業(yè)務(wù)層讓,開啟事務(wù)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; /** * 客戶的業(yè)務(wù)層 * @author administrator * */ @transactional public class customerserviceimpl implements customerservice{ private customerdao customerdao; public void setcustomerdao(customerdao customerdao) { this .customerdao = customerdao; } //用來保存客戶 public void save(customer customer) { system.out.println( "業(yè)務(wù)層,保存客戶" ); customerdao.save(customer); } } |
3)修改applicationcontext.xml文件
先引入hibernate配置文件
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<!-- 編寫bean,名稱都是固定的,由spring提供,用來加載hibernate.cfg.xml的配置文件--> <bean id= "sessionfactory" class = "org.springframework.orm.hibernate5.localsessionfactorybean" > <!-- 配置路徑:當(dāng)啟動服務(wù)器時(shí) ,該對象就會被創(chuàng)建,從而加載hibernate.cfg.xml文件,從而生成sessionfactory對象--> <property name= "configlocation" value= "classpath:hibernate.cfg.xml" /> </bean> |
配置平臺事務(wù)管理:用來管理事務(wù), 注意現(xiàn)在使用的是 hibernate框架,所以需要使用hibernate框架的事務(wù)管理器
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<!-- 先配置平臺事務(wù)管理器 --> <bean id= "transactionmanager" class = "org.springframework.orm.hibernate5.hibernatetransactionmanager" > <!-- 注入事務(wù),session能夠管理事務(wù),工廠能夠創(chuàng)建session --> <property name= "sessionfactory" ref= "sessionfactory" /> </bean> |
開啟事務(wù)注解
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<!-- 開啟事務(wù)的注解 --> <tx:annotation-driven transaction-manager= "transactionmanager" /> |
去除模板類配置,并為持久層配置sessionfactory
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<!-- 以后,dao都需要繼承hibernatedaosupport,注入sessionfactory --> <bean id= "customerdao" class = "com.clj.dao.customerdaoimpl" > <!--<property name= "hibernatetemplate" ref= "hibernatetemplate" />--> <!-- 這里不注入模板類,而是注入sessionfactory,因?yàn)槟0逍枰猻ession(封裝了session)--> <property name= "sessionfactory" ref= "sessionfactory" /> </bean> |
全部代碼如下
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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"> <!-- 編寫bean,名稱都是固定的,有spring提供,用來加載hibernate.cfg.xml的配置文件--> <bean id= "sessionfactory" class = "org.springframework.orm.hibernate5.localsessionfactorybean" > <!-- 配置路徑:當(dāng)啟動服務(wù)器時(shí) ,該對象就會被創(chuàng)建,從而加載hibernate.cfg.xml文件,從而生成sessionfactory對象--> <property name= "configlocation" value= "classpath:hibernate.cfg.xml" /> </bean> <!-- 先配置平臺事務(wù)管理器 --> <bean id= "transactionmanager" class = "org.springframework.orm.hibernate5.hibernatetransactionmanager" > <!-- 注入事務(wù),session能夠管理事務(wù),工廠能夠創(chuàng)建session --> <property name= "sessionfactory" ref= "sessionfactory" /> </bean> <!-- 開啟事務(wù)的注解 --> <tx:annotation-driven transaction-manager= "transactionmanager" /> <!-- 配置客戶模塊 --> <!-- 強(qiáng)調(diào):配置的aciton,必須是多列的 --> <bean id= "customeraction" class = "com.clj.web.action.customeraction" scope= "prototype" > <!--注意:struts管理action時(shí),基于其中有個(gè)struts-plugin的jar包,其中更改了一個(gè) 常量struts.objectfactory.spring.autowire = name將其打開了,可以自動裝配,只需要提供set方法 但是此時(shí)action由spring管理,自動裝配失效,所以需要手動進(jìn)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" />--> <!-- 這里不注入模板類,而是注入sessionfactory,因?yàn)槟0逍枰猻ession(封裝了session)--> <property name= "sessionfactory" ref= "sessionfactory" /> </bean> <!-- 配置模板類(hibernate框架提供的,內(nèi)部封裝了session),此時(shí)交給spring管理,如果持久層繼承了hibernatedaosupport,則無需配置--> <!-- <bean id= "hibernatetemplate" class = "org.springframework.orm.hibernate5.hibernatetemplate" > 注入sessionfactory <property name= "sessionfactory" /> </bean>--> </beans> |
4)修改action類
因?yàn)樽⑷肓藰I(yè)務(wù)層實(shí)現(xiàn)類,所以此時(shí)可以直接調(diào)用業(yè)務(wù)層方法,無須加載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; /** * 客戶的控制層 * @author administrator * */ public class customeraction extends actionsupport implements modeldriven<customer>{ //不要忘記手動new private customer customer= new customer(); public customer getmodel() { return customer; } //提供service成員屬性,提供set方法 private customerservice customerservice; public void setcustomerservice(customerservice customerservice) { this .customerservice = customerservice; } /** * 保存客戶 * @return */ public string add(){ system.out.println( "web層,保存客戶" ); //方式一:創(chuàng)建web的工廠(action由struts2創(chuàng)建) /*webapplicationcontext context=webapplicationcontextutils.getwebapplicationcontext(servletactioncontext.getservletcontext()); customerservice cs=(customerservice) context.getbean("customerservice"); //調(diào)用方法 cs.save(customer);*/ customerservice.save(customer); return none; } } |
spring整合hibernate方式二: (不帶有 hibernate.cfg.xml的配置文件)
這里準(zhǔn)備刪除hibernate的核心配置文件,在刪除之前,需要將其配置文件中的相關(guān)內(nèi)容配置到spring的applicatioincontext.xml文件中取
1、查看hibernate.cfg.xml文件中的相關(guān)內(nèi)容
* 數(shù)據(jù)庫連接基本參數(shù)(4大參數(shù))
* hibernate相關(guān)的屬性
* 連接池
* 映射文件
2、引入配置
引入連接池
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<!-- 先配置c3p0的連接池 --> <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> |
修改對應(yīng)的sessionfactory: 因?yàn)橐呀?jīng)沒有了 hibernate.cfg.xml的配置文件,所以需要修改該配置,注入連接池
引入對象映射文件:因?yàn)橐呀?jīng)沒有了hibernate.cfg.xml的配置文件,不會掃描到該配置文件,需要注入
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<!-- 編寫bean,名稱都是固定的,有spring提供,用來加載hibernate.cfg.xml的配置文件--> <bean id= "sessionfactory" class = "org.springframework.orm.hibernate5.localsessionfactorybean" > <!--先加載連接池 --> <property name= "datasource" ref= "datasource" /> <!-- 加載方言,加載可選項(xiàng) --> <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> |
現(xiàn)在:applicationcontext.xml全部代碼如下
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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的連接池 --> <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> <!-- 編寫bean,名稱都是固定的,有spring提供,用來加載hibernate.cfg.xml的配置文件--> <bean id= "sessionfactory" class = "org.springframework.orm.hibernate5.localsessionfactorybean" > <!--先加載連接池 --> <property name= "datasource" ref= "datasource" /> <!-- 加載方言,加載可選項(xiàng) --> <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> <!-- 先配置平臺事務(wù)管理器 --> <bean id= "transactionmanager" class = "org.springframework.orm.hibernate5.hibernatetransactionmanager" > <!-- 注入事務(wù),session能夠管理事務(wù),工廠能夠創(chuàng)建session --> <property name= "sessionfactory" ref= "sessionfactory" /> </bean> <!-- 開啟事務(wù)的注解 --> <tx:annotation-driven transaction-manager= "transactionmanager" /> <!-- 配置客戶模塊 --> <!-- 強(qiáng)調(diào):配置的aciton,必須是多列的 --> <bean id= "customeraction" class = "com.clj.web.action.customeraction" scope= "prototype" > <!--注意:struts管理action時(shí),基于其中有個(gè)struts-plugin的jar包,其中更改了一個(gè) 常量struts.objectfactory.spring.autowire = name將其打開了,可以自動裝配,只需要提供set方法 但是此時(shí)action由spring管理,自動裝配失效,所以需要手動進(jìn)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都需要繼承hibernatedaosupport,注入sessionfactory --> <bean id= "customerdao" class = "com.clj.dao.customerdaoimpl" > <!--<property name= "hibernatetemplate" ref= "hibernatetemplate" />--> <!-- 這里不注入模板類,而是注入sessionfactory,因?yàn)槟0逍枰猻ession(封裝了session)--> <property name= "sessionfactory" ref= "sessionfactory" /> </bean> <!-- 配置模板類(hibernate框架提供的,內(nèi)部封裝了session),此時(shí)交給spring管理,如果持久層繼承了hibernatedaosupport,則無需配置--> <!-- <bean id= "hibernatetemplate" class = "org.springframework.orm.hibernate5.hibernatetemplate" > 注入sessionfactory <property name= "sessionfactory" /> </bean>--> </beans> |
此時(shí)可以安心的刪除hibernate.cfg.xml文件了
這樣ssh整合完畢
六、hibernate模板常用方法
注意:以下代碼省略了接口中的演示(偷了個(gè)懶,相信初學(xué)者不會看不懂)
1)插入:
持久層
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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; /** * 持久層 * 繼承hibernatedaosupport,內(nèi)部封裝了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); } } |
業(yè)務(wù)層
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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; /** * 客戶的業(yè)務(wù)層 * @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); } } |
測試類
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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; /** * 測試hiberante模板類的簡單方法 * @author administrator * */ @runwith (springjunit4classrunner. class ) @contextconfiguration ( "classpath:applicationcontext.xml" ) public class demo1 { @resource (name= "customerservice" ) private customerservice customerservice; /** * 測試插入 */ @test public void run1(){ customer customer= new customer(); customer.setcust_id(1l); customer.setcust_name( "測試" ); customerservice.update(customer); } } |
2)以下為指定查詢、查詢所有、離線查詢代碼
持久層
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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; /** * 持久層 * 繼承hibernatedaosupport,內(nèi)部封裝了hibernatetemplate * @author administrator * */ public class customerdaoimpl extends hibernatedaosupport implements customerdao { //將數(shù)據(jù)保存到數(shù)據(jù)庫中(調(diào)用模板類(hibernate提供,內(nèi)部封裝了session)) /*private hibernatetemplate hibernatetemplate; public void sethibernatetemplate(hibernatetemplate hibernatetemplate) { this.hibernatetemplate = hibernatetemplate; }*/ /** * 保存客戶 */ public void save(customer customer) { system.out.println("持久層:保存客戶"); this.gethibernatetemplate().save(customer); } @override public void update(customer customer) { // todo auto-generated method stub this.gethibernatetemplate().update(customer); } /** * 通過主鍵查詢 */ public customer getbyid(long id) { return this.gethibernatetemplate().get(customer.class, id); } /** * 查詢所有 */ @override public list<customer> findall() { string sql="from customer"; list<customer> list=(list<customer>) this.gethibernatetemplate().find(sql); return list; } /** * qbc離線查詢 */ @override public list<customer> findallbyqbc() { detachedcriteria criteria=detachedcriteria.forclass(customer. class ); list<customer> list=(list<customer>) this .gethibernatetemplate().findbycriteria(criteria); return list; } } |
業(yè)務(wù)層
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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; /** * 客戶的業(yè)務(wù)層 * @author administrator * */ @transactional public class customerserviceimpl implements customerservice{ private customerdao customerdao; public void setcustomerdao(customerdao customerdao) { this .customerdao = customerdao; } //用來保存客戶 public void save(customer customer) { system.out.println( "業(yè)務(wù)層,保存客戶" ); 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(); } } |
測試類
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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; /** * 測試hiberante模板類的簡單方法 * @author administrator * */ @runwith (springjunit4classrunner. class ) @contextconfiguration ( "classpath:applicationcontext.xml" ) public class demo1 { @resource (name= "customerservice" ) private customerservice customerservice; /** * 測試插入 */ @test public void run1(){ customer customer= new customer(); customer.setcust_id(1l); customer.setcust_name( "測試" ); customerservice.update(customer); } /** * 測試查詢指定的客戶 */ @test public void run2(){ customer customer=customerservice.getbyid(2l); system.out.println(customer); } /** * 查詢所有的客戶 */ @test public void run3(){ list<customer> list=customerservice.findall(); system.out.println(list); } /** * qbc(離線查詢) */ @test public void run4(){ list<customer> list=customerservice.findallbyqbc(); system.out.println(list); } } |
七、關(guān)于ssh延遲加載問題
1. 使用延遲加載的時(shí)候,再web層查詢對象的時(shí)候程序會拋出異常!
* 原因是延遲加載還沒有發(fā)生sql語句,在業(yè)務(wù)層session對象就已經(jīng)銷毀了,所以查詢到的javabean對象已經(jīng)變成了托管態(tài)對象!
* 注意:一定要先刪除javassist-3.11.0.ga.jar包(jar包沖突了)
2. 解決辦法
spring框架提供了一個(gè)過濾器,讓session對象在web層就創(chuàng)建,在web層銷毀。只需要配置該過濾器即可
* 但是:要注意需要在struts2的核心過濾器之前進(jìn)行,spring監(jiān)聽器之后配置
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<!-- 解決延遲加載的問題 --> <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、演示延遲加載
持久層:調(diào)用load方法,此方法時(shí)延遲加載的
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/** * 延遲加載 */ @override public customer loadbyid( long id) { // todo auto-generated method stub return this .gethibernatetemplate().load(customer. class , id); } |
業(yè)務(wù)層
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@override public customer loadbyid( long id) { // todo auto-generated method stub return customerdao.loadbyid(id); } |
測試類
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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內(nèi)容,希望對大家的學(xué)習(xí)有所幫助,也希望大家多多支持服務(wù)器之家。
原文鏈接:http://www.cnblogs.com/cailijia52o/p/8724710.html