1.创建web工程
一路next 下去就行。完成后,IDEA会自动构建maven工程。
2.创建如下项目结构
需要将 java文件夹设置为SourcesRoot目录,否则无法创建package
设置操作如下:选择文件夹,右击。
3.在pom.xml文件中引入框架包
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.ssh</groupId> <artifactId>ssh</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <name>ssh Maven Webapp</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <!-- hibernate --> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>5.2.12.Final</version> </dependency> <!-- struts2 --> <dependency> <groupId>org.apache.struts</groupId> <artifactId>struts2-core</artifactId> <version>2.5.14.1</version> </dependency> <!-- struts2 spring 整合的核心包--> <dependency> <groupId>org.apache.struts</groupId> <artifactId>struts2-spring-plugin</artifactId> <version>2.5.14.1</version> </dependency> <!-- spring --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>5.0.2.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>5.0.2.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>5.0.2.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>5.0.2.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>5.0.2.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-expression</artifactId> <version>5.0.2.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>5.0.2.RELEASE</version> </dependency> <dependency> <groupId>cglib</groupId> <artifactId>cglib-nodep</artifactId> <version>2.1_3</version> </dependency> <!--spring aop包 注释方式使用事务管理 可以不引用--> <dependency> <groupId>aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>1.5.0</version> </dependency> <dependency> <groupId>aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.5.0</version> </dependency> <!-- 添加对数据库的支持 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.0.5</version> </dependency> <!-- https://mvnrepository.com/artifact/c3p0/c3p0 --> <dependency> <groupId>c3p0</groupId> <artifactId>c3p0</artifactId> <version>0.9.1.2</version> </dependency> </dependencies> <build> <finalName>ssh</finalName> </build> </project>
4.配置web.xml文件
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" > <web-app> <display-name>ssh</display-name> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring.xml</param-value> </context-param> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> </web-app>
5.配置spring的核心配置文件spring.xml,配置文件中扫描,注入各个javaBean,并且管理了hibernate的数据源和事务
--- jdbc配置文件 jdbc.properties
mysql.driverClassName = com.mysql.jdbc.Driver mysql.url = jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8 mysql.username = root mysql.password = 密码
<?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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" 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/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop "> <context:component-scan base-package="com.ssh.action"></context:component-scan> <context:component-scan base-package="com.ssh.service"></context:component-scan> <context:component-scan base-package="com.ssh.dao"></context:component-scan> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="location" value="classpath:jdbc.properties"/> </bean> <!-- data connection setting --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${mysql.driverClassName}"></property> <property name="jdbcUrl" value="${mysql.url}"></property> <property name="user" value="${mysql.username}"></property> <property name="password" value="${mysql.password}"></property> <!-- 设置数据库连接池的最大连接数 --> <property name="maxPoolSize"> <value>50</value> </property> <!-- 设置数据库连接池的最小连接数 --> <property name="minPoolSize"> <value>5</value> </property> <!-- 设置数据库连接池的初始化连接数 --> <property name="initialPoolSize"> <value>5</value> </property> <!-- 设置数据库连接池的连接最大空闲时间 --> <property name="maxIdleTime"> <value>20</value> </property> <!-- c3p0缓存Statement的数量数 --> <property name="maxStatements"> <value>50</value> </property> <!-- 当连接池里面的连接用完的时候,C3P0一下获取新的连接数 --> <property name="acquireIncrement"> <value>20</value> </property> </bean> <!-- hibernate 管理--> <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean"> <!-- 引用上面设置的数据源 --> <property name="dataSource"> <ref bean="dataSource"/> </property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <prop key="hibernate.autoReconnect">true</prop> <prop key="hibernate.connection.autocommit">true</prop> <prop key="hibernate.hbm2ddl.auto">update</prop> <prop key="hibernate.show_sql">true</prop> <prop key="hibernate.format_sql">true</prop> <!-- 解决session关闭问题 --> <prop key="hibernate.enable_lazy_load_no_trans">true</prop> <!-- spring 和 hibernate 整合的时候默认就是使用线程的,下面这一行不用写,写了反而要报错,此外 sessionFaction,不能使用openSession 既不能保存数据到数据库,还不能实现事务功能 --> <!--<prop key="current_session_context_class">thread</prop>--> <prop key="hibernate.max_fetch_depth">3</prop> <prop key="hibernate.connection.url" >jdbc:mysql://localhost:3306/test</prop> <prop key="hibernate.connection.driver_class">com.mysql.jdbc.Driver</prop> </props> </property> <!-- 包扫描的方式加载注解类 --> <property name="packagesToScan"> <list> <value>com.ssh.model</value> </list> </property> <property name="mappingLocations"> <list> <value>classpath:com/ssh/model/User.hbm.xml</value> </list> </property> </bean> <!-- 用注解来实现事物管理 --> <bean id="txManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory"/> </bean> <tx:annotation-driven transaction-manager="txManager"/> <!--<tx:advice id="txAdvice" transaction-manager="txManager">--> <!--<tx:attributes>--> <!--<tx:method name="*" read-only="false"/>--> <!--</tx:attributes>--> <!--</tx:advice>--> <!--<aop:config>--> <!--<aop:pointcut id="pt" expression="execution(* com.ssh.service.impl.*.*(..))"/>--> <!--<aop:advisor advice-ref="txAdvice" pointcut-ref="pt"/>--> <!--</aop:config>--> </beans>
6.配置struts2的核心配置文件struts.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN" "http://struts.apache.org/dtds/struts-2.5.dtd"> <struts> <!-- 修改常量管理struts 中的action的工程,这个常量的使用,必须引入 spring和struts的整合包,不然spring无法管理struts2 Action 中的实体类--> <constant name="struts.objectFactory" value="spring" /> <package name="user" extends="struts-default" namespace="/"> <action name="user_*" class="userAction" method="{1}"> <result name="success">/test.jsp</result> <allowed-methods>m1,saveUser</allowed-methods><!-- struts 2.5 之后,使用通配符必须加上这一行 ,否则无法使用通配符访问--> </action> </package> </struts>
7.使用IDEA生成数据库对应实体类和hibernate的映射文件
第一步:连接数据库
选择后边侧边栏的Database
第二步,生成映射文件
选中左边侧边栏的Persistence菜单
等待生成映射文件,完成后,在对应的包 下面生成如下文件
USer 代码
/** * FileName: User * Author: GET_CHEN * Date: 2017/12/13 13:45 * Description: */ package com.ssh.model; import javax.persistence.Basic; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.Id; @Entity public class User { private int uid; private String uname; @Id @Column(name = "uid") public int getUid() { return uid; } public void setUid(int uid) { this.uid = uid; } @Basic @Column(name = "uname") public String getUname() { return uname; } public void setUname(String uname) { this.uname = uname; } @Override public boolean equals(Object o) { if (this == o) return true; if (o == null || getClass() != o.getClass()) return false; User user = (User) o; if (uid != user.uid) return false; if (uname != null ? !uname.equals(user.uname) : user.uname != null) return false; return true; } @Override public int hashCode() { int result = uid; result = 31 * result + (uname != null ? uname.hashCode() : 0); return result; } }
USer.hbm.xml文件内容如下:
<?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.ssh.model.User" table="user" schema="test"> <id name="uid" column="uid"/> <property name="uname" column="uname"/> </class> </hibernate-mapping>
8.完成mvc的架构中,各个部分的代码。
-- dao 层
接口UserDao代码
/** * FileName: UserDao * Author: GET_CHEN * Date: 2017/12/13 11:34 * Description: */ package com.ssh.dao; import com.ssh.model.User; public interface UserDao { User getUser(Integer uid); void saveUser(User user); }
实现类UserDaoImpl的代码
/** * FileName: UserDaoImpl * Author: GET_CHEN * Date: 2017/12/13 11:57 * Description: */ package com.ssh.dao; import com.ssh.model.User; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.Transaction; import org.springframework.stereotype.Repository; import org.springframework.transaction.annotation.Transactional; import javax.annotation.Resource; @Repository("userDao") public class UserDaoImpl implements UserDao { @Resource(name="sessionFactory") private SessionFactory sessionFactory; public User getUser(Integer uid) { Session session = sessionFactory.getCurrentSession(); //当getCurrentSession所在的方法,或者调用该方法的方法绑定了事务之后,session就与当前线程绑定了,也就能通过currentSession来获取,否则就不能。 User user = session.get(User.class, uid); // session.close(); return user; } public void saveUser(User user) { Session session = sessionFactory.getCurrentSession(); session.save(user); System.out.println("======="+user.getUname()); //使用getCurrentSession后,hibernate 自己维护session的关闭,写了反而会报错 } }
-- service层
接口UserService的代码
/** * FileName: UserService * Author: GET_CHEN * Date: 2017/12/13 11:31 * Description: */ package com.ssh.service; import com.ssh.model.User; public interface UserService { User getUser(Integer uid); void saveUser(User user); }
实现类UserServiceImpl的代码
/** * FileName: UserServiceImpl * Author: GET_CHEN * Date: 2017/12/13 11:32 * Description: */ package com.ssh.service.impl; import com.ssh.dao.UserDao; import com.ssh.model.User; import com.ssh.service.UserService; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import javax.annotation.Resource; @Service("userService") public class UserServiceImpl implements UserService { //依赖Dao @Resource private UserDao userDao; // 注入事务管理 @Transactional(rollbackFor={Exception.class, RuntimeException.class}) public User getUser(Integer uid) { return userDao.getUser(uid); } @Transactional(rollbackFor={Exception.class, RuntimeException.class}) public void saveUser(User user) { userDao.saveUser(user); // throw new RuntimeException(); // userDao.saveUser(user); } }
-- 控制层 Action
UserAction代码如下
/** * FileName: TestAction * Author: GET_CHEN * Date: 2017/12/13 9:52 * Description: */ package com.ssh.action; import com.opensymphony.xwork2.ActionSupport; import com.ssh.model.User; import com.ssh.service.UserService; import org.springframework.context.annotation.Scope; import org.springframework.stereotype.Controller; import javax.annotation.Resource; @Controller("userAction") @Scope("prototype") public class UserAction extends ActionSupport{ //定义存放到值栈中的对象 private User user; //依赖service @Resource private UserService userService; //实现要存放到值栈中对象的get方法 public User getUser() { return user; } public String m1(){ user = userService.getUser(1); System.out.println(user.getUname()); return SUCCESS; } public String saveUser(){ User user = new User(); user.setUname("事务提交"); userService.saveUser(user); return SUCCESS; } }
-- view层test.jsp页面的代码
<%-- Created by IntelliJ IDEA. User: GET_CHEN Date: 2017/12/13 Time: 13:57 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <%-- 引入struts2 的标签库--%> <%@ taglib prefix="s" uri="/struts-tags" %> <html> <head> <title>ssh测试</title> </head> <body> <%-- 获取值栈中的user对象的uname的值--%> 用户名: <s:property value="user.uname"></s:property> </body> </html>
9.部署项目到Tomcat
-- 配置Tomcat
选择上图中的Configure进入,配置tomcat路径
确认后,回到上级页面,选择Deployment菜单项,添加工程到Tomcat
10.启动Tomcat,访问Action中的方法
-- 切换到Tomcat,点击绿色按钮启动Tomcat
-- 在地址栏输入,如下地址。结果如下。
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