SSH整合

SSH是java web开发中常见的框架组合，分别是struts2，Spring，Hibernate。
struts2需要配置核心过滤器，Spring需要配置WEB监听器。
实现的业务逻辑比较简单，从表单页面接收数据，通过struts2的模型驱动组装成Student对象，然后存入到数据库中。
项目结构概览：

1. java文件

1.1 PoJo类：

public class Student {    private Integer id;    private String name;    private String sex;    private Integer age;    private String tel;    public Student() {        super();    }    public Student(String name, String sex, Integer age, String tel) {        super();        this.name = name;        this.sex = sex;        this.age = age;        this.tel = tel;    }    public Integer getId() {        return id;    }    public void setId(Integer id) {        this.id = id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getSex() {        return sex;    }    public void setSex(String sex) {        this.sex = sex;    }    public Integer getAge() {        return age;    }    public void setAge(Integer age) {        this.age = age;    }    public String getTel() {        return tel;    }    public void setTel(String tel) {        this.tel = tel;    }    @Override    public String toString() {        return "Student [id=" + id + ", name=" + name + ", sex=" + sex                + ", age=" + age + ", tel=" + tel + "]";    }}

1.2 PoJo类的映射文件

<?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>        <!--Pojo类和表名之间的映射关系  -->        <class name="com.mq.pojo.Student" table="students">            <!--用来将类中的id属性与表中的主键建立映射，id标签就是用来配置主键的  -->            <id name="id" column="id">                <generator class="native"/>            </id>            <!-- 用来将类中的普通属性与表中的字段建立映射 -->            <property name="name" column="name"/>            <property name="sex" column="sex"/>            <property name="age" column="age"/>            <property name="tel" column="tel"/>        </class>    </hibernate-mapping>

1.3web层：Action类

@Controller(value="stuAction")//Action是多例的，必须配置Scope为prototype@Scope(value="prototype")public class StudentAction extends ActionSupport implements ModelDriven<Student> {    @Resource(name="stuService")    private StudentService studentService;    //采用模型驱动的方式从页面获取数据    private Student student=new Student();    public String save() {        studentService.saveStudent(student);        return SUCCESS;    }    @Override    public Student getModel() {        // TODO Auto-generated method stub        return student;    }}

1.4业务层：Service类

@Service(value="stuService")//添加事务的注解@Transactionalpublic class StudentService {    @Resource(name="stuDao")    private StudentDao studnetDao;    public void saveStudent(Student student) {        studnetDao.saveStudnet(student);    }}

1.5持久层：Dao类

public class StudentDao extends HibernateDaoSupport {    public void saveStudnet(Student student) {        System.out.println(student);        this.getHibernateTemplate().save(student);    }}

Dao类继承HibernateDaoSupport

2. 配置文件

2.1 web.xml

<?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_2_5.xsd" id="WebApp_ID" version="2.5">  <display-name>ssh</display-name>    <!-- 配置Spring框架整合WEB的监听器 -->    <listener>        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener>    <context-param>        <param-name>contextConfigLocation</param-name>        <param-value>classpath:applicationContext.xml</param-value>    </context-param>    <!-- 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>    <!-- 配置Struts2框架的核心的过滤器 -->    <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></web-app>

2.2 applicationContext.xml

<?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:///study"/>        <property name="user" value="root"/>        <property name="password" value="root"/>    </bean>    <!-- LocalSessionFactoryBean加载配置文件 -->    <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 -->        <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hibernate的映射的配置文件 -->        <property name="mappingResources">            <list>                <value>com/mq/pojo/Student.hbm.xml</value>            </list>        </property>    </bean>       <!--开启注解扫描，可以扫描com.mq包下的所有bean  -->      <context:component-scan base-package="com.mq"/>    <!-- 先配置平台事务管理器 -->    <bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">        <property name="sessionFactory" ref="sessionFactory"/>    </bean>    <!-- 开启事务的注解 -->    <tx:annotation-driven transaction-manager="transactionManager"/>    <!--Dao都需要继承HibernateDaoSupport，注入sessionFactory -->    <bean id="stuDao" class="com.mq.dao.StudentDao">        <property name="sessionFactory" ref="sessionFactory"/>    </bean></beans>

Pojo类的数据库映射文件需要在applicationContext.xml中配置

2.3 struts.xml

<?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>    <!-- 先配置包结构 -->    <package name="crm" extends="struts-default" namespace="/">        <!-- 如果Action由Spring框架来管理，class标签上只需要编写ID值 -->        <action name="student_*" class="stuAction" method="{1}">        <result name="success">/success.jsp</result>        </action>       </package></struts>

注意：Action的class标签不再是全路径，而是在Spring中配置的Id值。

2.4 log4j.properties

### direct log messages to stdout ###log4j.appender.stdout=org.apache.log4j.ConsoleAppenderlog4j.appender.stdout.Target=System.errlog4j.appender.stdout.layout=org.apache.log4j.PatternLayoutlog4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n### direct messages to file mylog.log ###log4j.appender.file=org.apache.log4j.FileAppenderlog4j.appender.file.File=c\:mylog.loglog4j.appender.file.layout=org.apache.log4j.PatternLayoutlog4j.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

3. 表单页面

<%@ 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></head><body><form action="student_save" method="post">    username: <input type="text" name="name"><br>    sex: <input type="text" name="sex"><br>    age: <input type="text" name="age"><br>    电话号码: <input type="text" name="tel"><br>    <input type="submit" value="保存"></form><br/><br/></body></html>