struts2.3.24+spring4.1.6+hibernate4.3.11+mysql5.5.25開辟情況搭建圖文教程。本站提示廣大學習愛好者:(struts2.3.24+spring4.1.6+hibernate4.3.11+mysql5.5.25開辟情況搭建圖文教程)文章只能為提供參考,不一定能成為您想要的結果。以下是struts2.3.24+spring4.1.6+hibernate4.3.11+mysql5.5.25開辟情況搭建圖文教程正文
struts2.3.24 + spring4.1.6 + hibernate4.3.11+ mysql5.5.25開辟情況搭建及相干解釋。
1、目的
1、搭建傳統的ssh開辟情況,並勝利運轉(拔出、查詢)
2、懂得c3p0銜接池相干設置裝備擺設
3、懂得驗證hibernate的二級緩存,並驗證
4、懂得spring事物設置裝備擺設,並驗證
5、懂得spring的IOC(依附注入),將struts2的action對象(bean)交給spring治理,自界說bean等...並驗證
6、懂得spring aop(面向切面編程),並編寫自界說切面函數,驗證成果
2、後期預備
開辟情況:eclipse for java ee;mysql5.5.25;jdk1.7.0_79;navicat10.1.7(可選);
創立數據庫demo:
/* Navicat MySQL Data Transfer Source Server : localhost_3306 Source Server Version : 50519 Source Host : localhost:3306 Source Database : demo Target Server Type : MYSQL Target Server Version : 50519 File Encoding : 65001 Date: 2016-01-09 23:36:02 */ SET FOREIGN_KEY_CHECKS=0; -- ---------------------------- -- Table structure for `user` -- ---------------------------- DROP TABLE IF EXISTS `user`; CREATE TABLE `user` ( `id` bigint(20) NOT NULL AUTO_INCREMENT, `account` varchar(200) NOT NULL, `name` varchar(200) NOT NULL, `address` varchar(1000) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
新建web工程,目次構造以下:
jar包預備,放到WEB-INF的lib目次下(有興致的可以用maven治理進程,然則有時刻下載jar包很慢...)
相干jar包都可以鄙人載上去的struts、spring、hibernate中找到,這裡給個參考,有些是可以刪除的,好比spring mvc部門的jar包:
3、設置裝備擺設web.xml
設置裝備擺設一個struts2的filter,映照一切*.action要求,由StrutsPrepareAndExecuteFilter對象來處置;
設置裝備擺設context-param參數,指定spring設置裝備擺設文件的途徑,<context-param>中的參數可以用ServletContext.getInitParameter(“param-name”)來獲得;
設置裝備擺設listener,重要是讀取applicationContext.xml設置裝備擺設文件信息,創立bean等初始化任務;
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <display-name>SSH</display-name> <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>*.action</url-pattern> </filter-mapping> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
4、設置裝備擺設applicationContext.xml
設置裝備擺設主動掃描ssh包下的@Repostory,@Service等注解,並生成對應的bean;
設置裝備擺設數據源(jdbc銜接池為c3p0,可以參考c3p0的具體設置裝備擺設),銜接池重要感化是疾速供給connection,反復應用,不須要每次燒毀創立,需設置裝備擺設用戶名、暗碼、最年夜銜接數、最小銜接數、初始銜接數等相干參數;
設置裝備擺設sessionFactory(可以參考hibernate的具體設置裝備擺設,這裡設置裝備擺設開啟二級緩存),重要感化是供給session,履行sql語句;這裡我們將會經由過程HibernateTemplate來對數據庫停止操作,便利spring停止什物掌握;ps,hibernate設置裝備擺設中還要設置裝備擺設類與數據庫表的映照;
設置裝備擺設事務治理器bean為HibernateTransactionManager,並把成員屬性sessionFactory初始化為之前設置裝備擺設的sessionFactory bean;
設置裝備擺設事務的流傳特征,並設置裝備擺設一個切面援用它,對一切ssh.service包及子包下一切add、delete、update、save辦法停止事務掌握,還可以設置裝備擺設事務流傳行動等參數;
最初是一個自界說aop相干設置裝備擺設,對ssh.aop.AopTest下一切test開首的辦法運用自界說切面‘myAop'停止掌握,後續會驗證成果;
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:jdbc="http://www.springframework.org/schema/jdbc" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd"> <!-- scans the classpath for annotated components (including @Repostory and @Service that will be auto-registered as Spring beans --> <context:component-scan base-package="ssh" /> <!--配數據源 --> <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <property name="driverClass" value="com.mysql.jdbc.Driver" /> <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/demo" /> <property name="user" value="root" /> <property name="password" value="root" /> <property name="acquireIncrement" value="1"></property> <property name="initialPoolSize" value="80"></property> <property name="maxIdleTime" value="60"></property> <property name="maxPoolSize" value="80"></property> <property name="minPoolSize" value="30"></property> <property name="acquireRetryDelay" value="1000"></property> <property name="acquireRetryAttempts" value="60"></property> <property name="breakAfterAcquireFailure" value="false"></property> <!-- 如湧現Too many connections, 留意修正mysql的設置裝備擺設文件my.ini,增年夜最多銜接數設置裝備擺設項,(檢查以後銜接敕令:show processlist) --> </bean> <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <prop key="hibernate.show_sql">true</prop> <prop key="hibernate.hbm2ddl.auto">update</prop> <prop key="current_session_context_class">thread</prop> <prop key="hibernate.cache.use_second_level_cache">true</prop> <prop key="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.EhCacheRegionFactory</prop> <prop key="hibernate.cache.use_query_cache">true</prop> <prop key="hibernate.cache.provider_configuration_file_resource_path">ehcache.xml</prop> </props> </property> <property name="mappingLocations"> <list> <value>classpath:ssh/model/User.hbm.xml</value> </list> </property> <!-- <property name="annotatedClasses"> <list> <value>ssh.model.User</value> </list> </property> --> </bean> <!-- 設置裝備擺設事務治理器 --> <bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> </bean> <!-- 事務的流傳特征 --> <tx:advice id="txadvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="add*" propagation="REQUIRED" read-only="false" rollback-for="java.lang.Exception"/> <tx:method name="delete*" propagation="REQUIRED" read-only="false" rollback-for="java.lang.Exception"/> <tx:method name="update*" propagation="REQUIRED" read-only="false" rollback-for="java.lang.Exception"/> <tx:method name="save*" propagation="REQUIRED" read-only="false" rollback-for="java.lang.Exception"/> </tx:attributes> </tx:advice> <aop:config> <aop:pointcut id="pcMethod" expression="execution(* ssh.service..*.*(..))" /> <aop:advisor pointcut-ref="pcMethod" advice-ref="txadvice" /> </aop:config> <!-- 自界說aop處置 測試 --> <bean id="aopTest" class="ssh.aop.AopTest"></bean> <bean id="myAop" class="ssh.aop.MyAop"></bean> <aop:config proxy-target-class="true"> <aop:aspect ref="myAop"> <aop:pointcut id="pcMethodTest" expression="execution(* ssh.aop.AopTest.test*(..))"/> <aop:before pointcut-ref="pcMethodTest" method="before"/> <aop:after pointcut-ref="pcMethodTest" method="after"/> </aop:aspect> </aop:config> </beans>
5、設置裝備擺設struts.xml
設置裝備擺設struts.objectFactory常數為spring,表現action由經由過程spring的bean中獲得;
設置裝備擺設result type為"json",也能夠設置裝備擺設其它的,這裡為了前後端數據交互輕便,設置裝備擺設成json格局;
設置裝備擺設兩個action,addUser和queryAllUser;
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <constant name="struts.objectFactory" value="spring"/> <constant name="struts.enable.DynamicMethodInvocation" value="false" /> <constant name="struts.devMode" value="false" /> <package name="default" extends="struts-default,json-default"> <global-results> <result type="json"> <param name="root">json</param> <param name="contentType">text/html</param> </result> </global-results> <action name="addUser" class="userAction" method="addUser"> <result>.</result> </action> <action name="queryAllUser" class="userAction" method="queryAllUser"> <result>.</result> </action> </package> <!-- Add packages here --> </struts>
6、編寫相干代碼
留意事項:
dao繼續HibernateDaoSupport類,一切數據庫相干操感化hibernateTemplate操作;
給dao層,service層,action添加響應注解,注冊為spring的bean;
附代碼以下:
UserAction.java
package ssh.action; import java.io.PrintWriter; import java.util.List; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.log4j.Logger; import org.apache.struts2.ServletActionContext; import org.springframework.stereotype.Controller; import ssh.aop.AopTest; import ssh.model.User; import ssh.service.UserService; import com.谷歌.gson.Gson; @Controller public class UserAction { Logger logger = Logger.getLogger(UserAction.class); @Resource private UserService userService; @Resource private AopTest aopTest; public void addUser(){ PrintWriter out = null; try{ HttpServletRequest request = ServletActionContext.getRequest(); HttpServletResponse response = ServletActionContext.getResponse(); response.setContentType("text/html;charset=UTF-8"); String account = request.getParameter("account"); String name = request.getParameter("name"); String address = request.getParameter("address"); User user = new User(); user.setAccount(account); user.setAddress(address); user.setName(name); userService.add(user); out = response.getWriter(); out.write(new Gson().toJson("success")); }catch(Exception e){ e.printStackTrace(); logger.error(e.getMessage()); if(out != null) out.write(new Gson().toJson("fail")); }finally{ out.flush(); out.close(); } } public void queryAllUser(){ PrintWriter out = null; aopTest.test1(); aopTest.test2(); //logger.error("i"); try { HttpServletResponse response = ServletActionContext.getResponse(); response.setContentType("text/html;charset=UTF-8"); Gson gson = new Gson(); List<User> userList= userService.queryAllUser(); String gsonStr = gson.toJson(userList); out = response.getWriter(); out.write(gsonStr); } catch (Exception e) { e.printStackTrace(); logger.error(e.getMessage()); if(out != null) out.write(new Gson().toJson("fail")); }finally{ out.flush(); out.close(); } } }
AopTest.java
package ssh.aop; public class AopTest { public void test1(){ System.out.println("AopTest test1 method is running~"); } public void test2(){ System.out.println("AopTest test2 method is running~"); } }
MyAop.java
package ssh.aop; public class MyAop { public void before(){ System.out.println("befor~"); } public void after(){ System.out.println("after~"); } }
BaseDao.java
package ssh.dao.base; import javax.annotation.Resource; import org.hibernate.SessionFactory; import org.springframework.orm.hibernate4.support.HibernateDaoSupport; public class BaseDao extends HibernateDaoSupport{ @Resource public void setMySessionFactory(SessionFactory sessionFactory){ this.setSessionFactory(sessionFactory); } }
UserDao.java
package ssh.dao; import java.util.ArrayList; import java.util.List; import org.springframework.orm.hibernate4.HibernateTemplate; import org.springframework.stereotype.Repository; import ssh.dao.base.BaseDao; import ssh.model.User; @Repository public class UserDao extends BaseDao{ public void add(User user){ this.getHibernateTemplate().save(user); } @SuppressWarnings("unchecked") public List<User> queryAllUser(){ List<User> users = new ArrayList<User>(); HibernateTemplate hibernateTemplate = this.getHibernateTemplate(); hibernateTemplate.setCacheQueries(true); users = (List<User>) hibernateTemplate.find("from User"); hibernateTemplate.setCacheQueries(false); return users; } }
User.java
package ssh.model; import java.io.Serializable; public class User implements Serializable{ /** * */ private static final long serialVersionUID = -6190571611246371934L; private Long id; private String account; private String name; private String address; public String getAccount() { return account; } public String getName() { return name; } public String getAddress() { return address; } public void setAccount(String account) { this.account = account; } public void setName(String name) { this.name = name; } public void setAddress(String address) { this.address = address; } /** * @return the id */ public Long getId() { return id; } /** * @param id the id to set */ public void setId(Long id) { this.id = id; } }
User.hbm.xml
<?xml version="1.0"?> <!-- ~ Hibernate, Relational Persistence for Idiomatic Java ~ ~ Copyright (c) 2010, Red Hat Inc. or third-party contributors as ~ indicated by the @author tags or express copyright attribution ~ statements applied by the authors. All third-party contributions are ~ distributed under license by Red Hat Inc. ~ ~ This copyrighted material is made available to anyone wishing to use, modify, ~ copy, or redistribute it subject to the terms and conditions of the GNU ~ Lesser General Public License, as published by the Free Software Foundation. ~ ~ This program is distributed in the hope that it will be useful, ~ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ~ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License ~ for more details. ~ ~ You should have received a copy of the GNU Lesser General Public License ~ along with this distribution; if not, write to: ~ Free Software Foundation, Inc. ~ 51 Franklin Street, Fifth Floor ~ Boston, MA 02110-1301 USA --> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"> <hibernate-mapping package="ssh.model"> <class name="User" table="user"> <cache usage="read-write"/> <id name="id" column="id"> <generator class="increment"/> </id> <property name="account" type="java.lang.String" column="account"/> <property name="name" type="java.lang.String" column="name"/> <property name="address" type="java.lang.String" column="address"/> </class> </hibernate-mapping>
UserService.java
package ssh.service; import java.util.List; import javax.annotation.Resource; import org.springframework.stereotype.Service; import ssh.dao.UserDao; import ssh.model.User; @Service public class UserService { @Resource private UserDao userDao = new UserDao(); public List<User> queryAllUser(){ return userDao.queryAllUser(); } public void add(User user){ userDao.add(user); } }
index.jsp(記得添加jquery庫)
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <style> .mt20{ margin-top: 20px; } </style> </head> <body> <div > <div class="mt20"><label>賬號:</label><input id="account" type="text"/></div> <div class="mt20"><label>姓名:</label><input id="name" type="text"/></div> <div class="mt20"><label>地址:</label><input id="address" type="text"/></div> <div class="mt20"><button id="addUser" >添加</button></div> </div> <h3>用戶列表:</h3> <ul id="userList"> </ul> <script type="text/javascript" src="js/jquery-1.11.1.min.js"></script> <script> $(function() { $.ajax({ url : 'queryAllUser.action', type : 'post', dataType : 'json', success : function(data) { try { for(var i = 0; i < data.length; i++){ $("#userList").append("<li><span style='color:red'>id="+data[i].id+"</span>,account="+data[i].account+",name="+data[i].name+",address="+data[i].address+"</li>"); } } catch (e) {}; } , error : function(e) { alert("sys error"); } }); $("#addUser").on("click", function() { var account = $("#account").val(); var name = $("#name").val(); var address = $("#address").val(); $.ajax({ url : 'addUser.action', type : 'post', dataType : 'json', data : { account : account, name : name, address : address }, success : function(data) { try { $("#userList").append("<li>account="+account+",name="+name+",address="+address+"</li>"); alert("添加勝利"); } catch (e) { } }, error : function(e) { alert("sys error"); } }); }); }); </script> </body> </html>
7、驗證成果
回到開首,開端熟習懂得相干技巧,並驗證成果
1、搭建傳統的ssh開辟情況,並勝利運轉(拔出、查詢)
以下圖:查詢及添加用戶勝利;
2、懂得c3p0銜接池相干設置裝備擺設
數據庫銜接是一種昂貴的資本,開啟及封閉比擬消費機能,是以可以用銜接池來治理,初始化若干個銜接,反復應用,而不是反復創立封閉,有點相似線程池;
設置裝備擺設以下,要依據現實項目情形公道設置裝備擺設最小最年夜銜接數,具體的各個參數寄義可以參考鏈接
別的要驗證銜接數相干設置裝備擺設很簡略,可以本身寫個法式驗證,好比當設置裝備擺設最年夜銜接數為10的時刻,可以寫個法式驗證,當翻開10個connection後,第11個connection會一向處於期待狀況,獲得不到;所以要依據情形公道設置裝備擺設銜接數,不然有能夠會影呼應用機能;
<!--配數據源 --> <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <property name="driverClass" value="com.mysql.jdbc.Driver" /> <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/demo" /> <property name="user" value="root" /> <property name="password" value="root" /> <property name="acquireIncrement" value="1"></property> <property name="initialPoolSize" value="80"></property> <property name="maxIdleTime" value="60"></property> <property name="maxPoolSize" value="80"></property> <property name="minPoolSize" value="30"></property> <property name="acquireRetryDelay" value="1000"></property> <property name="acquireRetryAttempts" value="60"></property> <property name="breakAfterAcquireFailure" value="false"></property> <!-- 如湧現Too many connections, 留意修正mysql的設置裝備擺設文件my.ini,增年夜最多銜接數設置裝備擺設項,(檢查以後銜接敕令:show processlist) --> </bean>
3、懂得驗證hibernate的二級緩存,並驗證
hibernate的一級緩存是指session規模的緩存,默許開啟,二級緩存是sessionFactory規模緩存,在設置裝備擺設sessionFactory的時刻,我們曾經設置裝備擺設二級緩存為ehcache,接上去驗證後果,查詢user操作,發明第一次查詢會操作數據庫,打印sql語句,刷新頁面後,發明查詢勝利且沒打印sql語句,以下圖,可見二級緩存任務OK;
4、懂得spring事物設置裝備擺設,並驗證
所謂事務掌握,道理都一樣,就是要包管原子性、分歧性、隔離性、耐久性,jdbc編程的時刻,都是本身掌握,經由過程set autocommit=false設置成不主動提交,然後開端寫詳細的數據庫操作,產生異常的時刻rollback,不然commit;其實spring對事物的掌握道理也差不多,加了一些封裝,設置裝備擺設等,加倍便利罷了,好比可以在service層分歧辦法停止掌握等;
驗證的話很簡略,在service層某個辦法(留意辦法名要相符spring設置裝備擺設文件中設置裝備擺設的規矩)內寫兩個拔出user的操作,在中央拋出一個異常,然後履行,假如發明第一個user拔出勝利,解釋事務掌握掉效,不然ok;
5、懂得spring的IOC(依附注入),將struts2的action對象(bean)交給spring治理,自界說bean等...並驗證
細心不雅察的話,在設置裝備擺設applicationContext.xml文件的進程中,重要任務都是在設置裝備擺設bean相干信息,這些bean都是事前創立好的,其實所謂的bean就是對象;
之所以把對象的創立交給spring容器,目標是為懂得耦;
別的在用struts的時刻,spring把action注冊為bean,默許是單例的,拜訪的時刻其實不是每次都new出一個action,在並發拜訪的時刻,會有風險;
不外,可以經由過程scope="prototype",把action設置裝備擺設成多例;ps:struts2中的action默許是多例;
留意:applicationContext.xml設置裝備擺設的bean和自界說注解的bean都是可以在法式運轉的進程中直接獲得的,經由過程@Resource等方法,這個很好驗證,寫個小法式便可;
6、懂得spring aop(面向切面編程),並編寫自界說切面函數,驗證成果
切面編程這類情勢許多處所都用了該思惟,甚麼過濾器,攔阻器,事務掌握等等...
其道理照樣java的反射和靜態署理,在辦法履行前後加以掌握,參加本身要履行的代碼;
小例子中加了個切面,在辦法履行前後打印before和after字符串,以下圖,任務正常,代碼參考後面部門:
<!-- 自界說aop處置 測試 --> <bean id="aopTest" class="ssh.aop.AopTest"></bean> <bean id="myAop" class="ssh.aop.MyAop"></bean> <aop:config proxy-target-class="true"> <aop:aspect ref="myAop"> <aop:pointcut id="pcMethodTest" expression="execution(* ssh.aop.AopTest.test*(..))"/> <aop:before pointcut-ref="pcMethodTest" method="before"/> <aop:after pointcut-ref="pcMethodTest" method="after"/> </aop:aspect> </aop:config>
@author 風一樣的碼農
以上就是本文的全體內容,願望對年夜家的進修有所贊助,也願望年夜家多多支撐。