快速搭建ssh代码篇

来源：互联网发布：wampserver for mac 编辑：程序博客网时间：2024/05/24 04:19

接着上文，这里贴出测试及配置代码。首先是运行结果,tomcat配置之前有提及过，这里不再阐述。
这里写图片描述
为了解决hibernate的延迟加载问题，我们在web.xml里配置一个过滤器，也可以在hbm.xml的属性里配置lazy=false解决。
list.jsp

<body><table>    <tr>        <td>编号</td>        <td>名称</td>        <td>性别</td>        <td>班级</td>        <td>操作</td>    </tr>    <c:forEach var="student" items="${studentItems}">    <tr>        <td>${student.sid}</td>        <td>${student.sname}</td>        <td>${student.sex}</td>        <td>${student.grade.gname}</td>        <td>操作</td>    </tr>    </c:forEach></table></body>

web.xml

    <!--配置上下文参数(指定spring文件路径)-->    <context-param>        <param-name>contextConfigLocation</param-name>        <param-value>classpath:applicationContext.xml</param-value>    </context-param>    <!--配置监听(在服务器启动时创建spring容器)-->    <listener>        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener>    <!--配置OpenSessionInViewFilter过滤器解决延迟加载问题-->    <filter>        <filter-name>OpenSessionInViewFilter</filter-name>        <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>    </filter>    <filter-mapping>        <filter-name>OpenSessionInViewFilter</filter-name>        <url-pattern>*.action</url-pattern>    </filter-mapping>    <!--配置struts2核心控制器-->    <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>*.action</url-pattern>    </filter-mapping>

applicationContext.xml;

<!--导入数据访问层对象配置-->    <import resource="applicationContext-dao.xml" />    <import resource="applicationContext-biz.xml" />    <import resource="applicationContext-action.xml" />    <!--配置数据源-->    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">        <!--数据库连接信息-->        <property name="driverClass" value="com.mysql.jdbc.Driver">        </property>        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/ssh">        </property>        <property name="user" value="root"></property>        <property name="password" value="123456"></property>        <!--连接池最大连接数-->        <property name="maxPoolSize" value="40"></property>        <!--连接池最小连接数-->        <property name="minPoolSize" value="1"></property>        <!--初始化连接数-->        <property name="initialPoolSize" value="1"></property>        <!--连接的最大空闲时间(超时时间,单位:秒)-->        <property name="maxIdleTime" value="60"></property>        <!--没有连接时,等待连接的时间(单位:毫秒)-->        <property name="checkoutTimeout" value="2000"></property>    </bean>    <!--会话工厂-->    <bean id="sessionFactory"          class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">        <!--注入数据源-->        <property name="dataSource" ref="dataSource"></property>        <!--配置hibernate属性-->        <property name="hibernateProperties">            <props>                <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>                <prop key="hibernate.show_sql">true</prop>            </props>        </property>        <!--配置映射文件路径-->        <property name="mappingResources">            <list>                <value>com/ssh/entity/Grade.hbm.xml</value>                <value>com/ssh/entity/Student.hbm.xml</value>            </list>        </property>    </bean>

applicationContext-dao.xml

<!--学生信息数据访问对象--><bean id="studentDao" class="com.ssh.dao.impl.StudentDaoImpl"><!--将会话工厂注入到HibernateDaoSupport中--><property name="sessionFactory"> <ref bean="sessionFactory" /></property></bean>

applicationContext-biz.xml

<!--学生信息管理业务对象--><bean id="studentManagerBiz" class="com.ssh.biz.impl.StudentManagerBizImpl"><property name="studentDao" ref="studentDao"></property></bean>

applicationContext-action.xml

<!--学生管理action--><bean id="studentManagerAction" class="com.ssh.action.StudentManagerAction" scope="prototype"><property name="studentManagerBiz" ref="studentManagerBiz"></property></bean>

struts.xml

<package name="studentmanager" namespace="/" extends="struts-default"><action name="findAllStudentAction" class="studentManagerAction" method="findAllStudent"><result name="success">list.jsp</result></action></package>

实体类比较简单，这里不再给出，直接给出配置文件。
student.hbm.xml

<hibernate-mapping>    <class name="com.ssh.entity.Student" table="student">        <id name="sid" type="long" column="sid">            <generator class="native"></generator>        </id>        <property name="sname" type="java.lang.String" column="sname" />        <property name="sex" type="java.lang.String" column="sex" />        <!--配置多对一关联映射-->        <many-to-one name="grade" class="com.ssh.entity.Grade" >            <column name="gid"></column>        </many-to-one>    </class></hibernate-mapping>

grade.hbm.xml

<hibernate-mapping>    <class name="com.ssh.entity.Grade" table="grade">        <id name="gid" type="long" column="gid">            <generator class="native"></generator>        </id>        <property name="gname" type="java.lang.String" column="gname" />        <property name="gdesc" type="java.lang.String" column="gdesc" />    </class></hibernate-mapping>

IStudentDao

public interface IStudentDao {    /*    * 查询所有的学生信息    * */    public List<Student> findAllStudent();}

StudentDaoImpl

public class StudentDaoImpl extends HibernateDaoSupport implements IStudentDao {    @Override    public List<Student> findAllStudent() {        return super.getHibernateTemplate().find("FROM Student");    }}

IStudentManagerBiz

public interface IStudentManagerBiz {    //查询所有的学生信息    public List<Student> findAllStudent();}

StudentManagerBizImpl

public class StudentManagerBizImpl implements IStudentManagerBiz{    //学生数据访问对象    private IStudentDao studentDao;    public void setStudentDao(IStudentDao studentDao) {        this.studentDao = studentDao;    }    @Override    public List<Student> findAllStudent() {        return studentDao.findAllStudent();    }}

StudentManagerAction

public class StudentManagerAction extends ActionSupport {    //学生信息管理业务对象    private IStudentManagerBiz studentManagerBiz;    public void setStudentManagerBiz(IStudentManagerBiz studentManagerBiz) {        this.studentManagerBiz = studentManagerBiz;    }    //查询所有的学生信息    public String findAllStudent() {        List<Student> studentItems = studentManagerBiz.findAllStudent();        //获取request对象，存数据        Map<String, Object> request = (Map<String, Object>) ActionContext.getContext().get("request");        request.put("studentItems", studentItems);        return ActionSupport.SUCCESS;    }}

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