【 SSH 实例】使用ssh开发的简单项目

简单的员工管理项目，使用spring、struts1、hibernate开发

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:tx="http://www.springframework.org/schema/tx"

       xsi:schemaLocation="http://www.springframework.org/schema/beans

           http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

           http://www.springframework.org/schema/context

           http://www.springframework.org/schema/context/spring-context-3.0.xsd

           http://www.springframework.org/schema/tx

           http://www.springframework.org/schema/tx/spring-tx-3.0.xsd

            http://www.springframework.org/schema/cache

            http://www.springframework.org/schema/cache/spring-cache.xsd

           http://www.springframework.org/schema/tx/spring-tx.xsd">

    <!-- 加载db.properties文件 -->

    <bean id="config" class="org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer">

        <property name="locations" value="classpath*:*.properties"/>

    </bean>

    <!-- 配置配置数据库信息（替代mybatis的配置文件conf.xml） -->

    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">

        <property name="driverClassName" value="${driver}"></property>

        <property name="url" value="${url}"></property>

        <property name="username" value="${username}"></property>

        <property name="password" value="${password}"></property>

        <property name="initialSize" value="${initialSize}"></property>

        <property name="maxActive" value="${maxActive}"></property>

        <property name="maxIdle" value="${maxIdle}"></property>

        <property name="minIdle" value="${minIdle}"></property>

    </bean>

    <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">

        <property name="dataSource" ref="dataSource"></property>

        <!-- //加载实体类的映射文件位置及名称 -->

        <property name="mappingLocations" value="classpath:k/bean/*.hbm.xml"></property>

        <property name="configLocation" value="classpath:hibernate.cfg.xml"></property>

    </bean>

    <!--事务-->

    <bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">

        <property name="sessionFactory" ref="sessionFactory"/>

    </bean>

    <tx:annotation-driven transaction-manager="transactionManager"/>

    <!--开启注解配置-->

    <context:annotation-config/>

    <!--配置 action-->

    <bean name="/login" class="k.action.LoginAction" scope="prototype"/>

    <bean name="/employee" class="k.action.EmployeeAction" scope="prototype"/>

    <!--配置 Service-->

    <bean name="testService" class="k.service.TestService"/>

    <bean id="employeeService" name="employeeService" class="k.service.impl.EmployeeServiceImpl"/>

    <bean name="departmentService" class="k.service.impl.DepartmentServiceImpl"/>

</beans>

db.properties

driver=com.mysql.jdbc.Driver

url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8

username=root

password=root3306

initialSize=20

maxActive=500

maxIdle=2

minIdle=1

hibernate.cfg.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE hibernate-configuration PUBLIC

        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"

        "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

    <session-factory>

        <!-- 配置Hibernate的基本属性 -->

        <!-- 1.数据源配置到IOC容器中 -->

        <!-- 2.关联的.hbm.xml也在IOC容器配置SessionFactory实例 -->

        <!-- 3.配置Hibernate的基本属性：方言，SQL显示及格式化，生成数据表的策略以及二级缓存 -->

        <property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>

        <property name="hibernate.hbm2ddl.auto">update</property>

        <property name="hibernate.show_sql">true</property>

        <property name="hibernate.format_sql">true</property>

        <!--<property name="cache.use_second_level_cache">true</property>-->

        <property name="ache.provider_class">org.hibernate.cache.internal.DefaultCacheKeysFactory</property>

        <property name="generate_statistics">true</property>

    </session-factory>

</hibernate-configuration>

log4j.properties

log4j.rootLogger=ERROR, console

log4j.appender.console=org.apache.log4j.ConsoleAppender

log4j.appender.console.layout=org.apache.log4j.PatternLayout

log4j.appender.console.layout.conversionPattern=%5p [%t] (%F:%L) - %m%n

struts-config.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts-config PUBLIC

        "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"

        "http://struts.apache.org/dtds/struts-config_1_3.dtd">

<struts-config>

    <form-beans>

        <form-bean name="employeeForm" type="k.form.EmployeeForm">

            <form-property name="id" type="java.lang.Integer"></form-property>

            <form-property name="name" type="java.lang.String"></form-property>

            <form-property name="password" type="java.lang.String"></form-property>

        </form-bean>

    </form-beans>

    <global-forwards>

        <forward name="ok" path="/WEB-INF/jsp/ok.jsp"></forward>

        <forward name="err" path="/WEB-INF/jsp/err.jsp"></forward>

    </global-forwards>

    <action-mappings>

        <action name="employeeForm" path="/login" parameter="action" type="k.action.LoginAction"

                scope="request" attribute="employeeForm" input="index.jsp" validate="false">

            <forward name="main" path="/WEB-INF/jsp/main.jsp"></forward>

            <forward name="loginJsp" path="/WEB-INF/jsp/login.jsp"></forward>

        </action>

        <action name="employeeForm" path="/employee" parameter="action" type="k.action.EmployeeAction"

                scope="request" attribute="employeeForm" input="index.jsp" validate="false">

            <forward name="add" path="/WEB-INF/jsp/employee/add.jsp"></forward>

            <forward name="loginJsp" path="/WEB-INF/jsp/login.jsp"></forward>

            <forward name="list" path="/WEB-INF/jsp/employee/list.jsp"></forward>

            <forward name="update" path="/WEB-INF/jsp/employee/update.jsp"></forward>

        </action>

    </action-mappings>

    <controller>

        <set-property property="processorClass"

                      value="org.springframework.web.struts.DelegatingRequestProcessor"></set-property>

    </controller>

</struts-config>

web.xml

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"

         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"

         version="3.1">

    <!-- spring 初始化 -->

    <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-class>k.listener.StartSystemListener</listener-class>

        <!--<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>-->

    </listener>

    <!-- struts 初始化 -->

    <servlet>

        <servlet-name>action</servlet-name>

        <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>

        <init-param>

            <param-name>config</param-name>

            <param-value>/WEB-INF/struts-config.xml</param-value>

        </init-param>

        <load-on-startup>2</load-on-startup>

    </servlet>

    <servlet-mapping>

        <servlet-name>action</servlet-name>

        <url-pattern>*.do</url-pattern>

    </servlet-mapping>

    <!-- 配置请求过滤器，编码格式设为UTF-8，避免中文乱码-->

    <filter>

        <filter-name>springUtf8Encoding</filter-name>

        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

        <init-param>

            <param-name>encoding</param-name>

            <param-value>UTF-8</param-value>

        </init-param>

        <init-param>

            <param-name>forceEncoding</param-name>

            <param-value>true</param-value>

        </init-param>

    </filter>

    <filter-mapping>

        <filter-name>springUtf8Encoding</filter-name>

        <url-pattern>/*</url-pattern>

    </filter-mapping>

    <!--<filter>-->

    <!--<filter-name>EncodingFilter</filter-name>-->

    <!--<filter-class>k.listener.EncodingFilter</filter-class>-->

    <!--</filter>-->

    <!--<filter-mapping>-->

    <!--<filter-name>EncodingFilter</filter-name>-->

    <!--<url-pattern>/*</url-pattern>-->

    <!--</filter-mapping>-->

    <!-- 懒加载 -->

    <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>

    <!-- 以下3项参数与log4j的配置相关 -->

    <context-param>

        <param-name>log4jConfigLocation</param-name>

        <param-value>classpath:log4j.properties</param-value>

    </context-param>

    <context-param>

        <param-name>log4jRefreshInterval</param-name>

        <param-value>60000</param-value>

    </context-param>

    <listener>

        <listener-class>

            org.springframework.web.util.Log4jConfigListener

        </listener-class>

    </listener>

</web-app>

LoginAction

package k.action;

import k.domain.Employee;

import k.form.EmployeeForm;

import k.service.EmployeeService;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;

import org.apache.struts.actions.DispatchAction;

import javax.annotation.Resource;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class LoginAction extends DispatchAction {

    @Resource

    private EmployeeService employeeService;

    public ActionForward login(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

        return mapping.findForward("loginJsp");

    }

    public ActionForward doLogin(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

        EmployeeForm employeeOld = (EmployeeForm) form;

        Employee employee = new Employee(Integer.parseInt(employeeOld.getId()), employeeOld.getPassword());

        employee = employeeService.checkEmployee(employee);

        if (employee != null) {

            request.getSession().setAttribute("employee", employee);

            return mapping.findForward("main");

        }

        return mapping.findForward("err");

    }

    public ActionForward loginOut(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

        return super.execute(mapping, form, request, response);

    }

    public ActionForward main(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

        return mapping.findForward("loginJsp");

    }

}

EmployeeAction

package k.action;

import k.domain.Department;

import k.domain.Employee;

import k.form.EmployeeForm;

import k.service.DepartmentService;

import k.service.EmployeeService;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;

import org.apache.struts.actions.DispatchAction;

import javax.annotation.Resource;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import java.util.Date;

public class EmployeeAction extends DispatchAction {

    @Resource

    private EmployeeService employeeService;

    @Resource

    private DepartmentService departmentService;

    public ActionForward addEmployeeUI(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

        return mapping.findForward("add");

    }

    public ActionForward addEmployee(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

        EmployeeForm employeeForm = (EmployeeForm) form;

        Employee employee = new Employee();

        employee.setName(employeeForm.getName());

        employee.setEmail(employeeForm.getEmail());

        employee.setSalary(employeeForm.getSalary());

        employee.setPassword(employeeForm.getPassword());

        employee.setGrade(employeeForm.getGrade());

        employee.setHireDate(new Date());

        Department department = (Department) departmentService.findById(Department.class, Integer.parseInt(employeeForm.getDepartment_id()));

        employee.setDepartment(department);

        try {

            employeeService.add(employee);

        } catch (Exception e) {

            e.printStackTrace();

            return mapping.findForward("err");

        }

        return mapping.findForward("ok");

    }

    public ActionForward getList(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

        // request.setAttribute("employeeList", employeeService.getEmployeeList());

        // return mapping.findForward("list");

        String s_pageNow = request.getParameter("pageNow");

        int pageNow = 1;

        int pageSize = 3;

        if (s_pageNow != null) {

            pageNow = Integer.parseInt(s_pageNow);

        }

        int pageCount = employeeService.getPageCount(pageSize);

        request.setAttribute("pageCount", pageCount);

        request.setAttribute("employeeList", employeeService.getEmployeeList(pageSize, pageNow));

        return mapping.findForward("list");

    }

    public ActionForward delEmp(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

        try {

            employeeService.delById(Employee.class, Integer.parseInt(request.getParameter("id")));

        } catch (Exception e) {

            e.printStackTrace();

            return mapping.findForward("err");

        }

        return mapping.findForward("ok");

    }

    public ActionForward updateUI(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

        String id = request.getParameter("id");

        Employee employee = (Employee) employeeService.findById(Employee.class, Integer.parseInt(id));

        request.setAttribute("emp", employee);

        return mapping.findForward("update");

    }

    public ActionForward update(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

        EmployeeForm employeeForm = (EmployeeForm) form;

        Employee employee = new Employee();

        employee.setId(Integer.parseInt(employeeForm.getId()));

        employee.setName(employeeForm.getName());

        employee.setEmail(employeeForm.getEmail());

        employee.setSalary(employeeForm.getSalary());

        employee.setPassword(employeeForm.getPassword());

        employee.setGrade(employeeForm.getGrade());

        employee.setHireDate(new Date());

        try {

            employeeService.executeUpdate(employee);

        } catch (Exception e) {

            e.printStackTrace();

            return mapping.findForward("err");

        }

        return mapping.findForward("ok");

    }

}

BasicAbstractService

package k.basic;

import org.hibernate.Query;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;

import java.io.Serializable;

import java.util.List;

@Transactional

public abstract class BasicAbstractService implements BasicService {

    @Resource

    private SessionFactory sessionFactory;

    public void setSessionFactory(SessionFactory sessionFactory) {

        this.sessionFactory = sessionFactory;

    }

    @Override

    public void add(Object object) {

        this.sessionFactory.getCurrentSession().save(object);

    }

    @Override

    public Object findById(Class classz, Serializable id) {

        return this.sessionFactory.getCurrentSession().get(classz, id);

    }

    @Override

    public List executeQuery(String hql, Object[] parameters) {

        Query query = this.sessionFactory.getCurrentSession().createQuery(hql);

        if (parameters != null && parameters.length > 0) {

            for (int i = 0; i < parameters.length; i++) {

                query.setParameter(i, parameters[i]);

            }

        }

        return query.list();

    }

    @Override

    public List executeQueryByPage(String hql, Object[] parameters, Integer pageNow, Integer pageSize) {

        Query query = this.sessionFactory.getCurrentSession().createQuery(hql);

        if (parameters != null && parameters.length > 0) {

            for (int i = 0; i < parameters.length; i++) {

                query.setParameter(i, parameters[i]);

            }

        }

        return query.setFirstResult((pageNow - 1) * pageSize).setMaxResults(pageSize).list();

    }

    @Override

    public List executeUpdate(String hql, Object[] parameters) {

        return null;

    }

    @Override

    public Object uniqueQuery(String hql, Object[] parameters) {

        Query query = this.sessionFactory.getCurrentSession().createQuery(hql);

        return query.uniqueResult();

    }

    @Override

    public int queryPageCount(String hql, Object[] parameters, Integer pageSize) {

        return 0;

    }

    @Override

    public void delById(Class clazz, Serializable id) {

        Session session = this.sessionFactory.getCurrentSession();

        session.delete(findById(clazz, id));

    }

    @Override

    public List executeUpdate(Object object) {

        Session session = this.sessionFactory.getCurrentSession();

        session.update(object);

        return null;

    }

}

BasicService

package k.basic;

import java.io.Serializable;

import java.util.List;

public interface BasicService {

    Object findById(Class classz, Serializable id);

    List executeQuery(String hql, Object[] parameters);

    List executeQueryByPage(String hql, Object[] parameters, Integer pageNow, Integer pageSize);

    void add(Object object);

    List executeUpdate(String hql, Object[] parameters);

    List executeUpdate(Object object);

    Object uniqueQuery(String hql, Object[] parameters);

    int queryPageCount(String hql, Object[] parameters, Integer pageSize);

    void delById(Class clazz, Serializable id);

}

Department.hbm.xml

<?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="k.domain.Department" table="t_department">

        <!--<cache usage="read-write"></cache>-->

        <id name="id" column="id" type="java.lang.Integer">

            <generator class="native"></generator>

        </id>

        <property name="name" column="name" type="java.lang.String" length="64"></property>

        <!-- 在客户映射文件中，表示所有联系人

           使用set标签表示所有联系人

           set标签里面有name属性：

                属性值写在客户实体类里面表示联系人的set集合名称

            inverse属性默认值：false不放弃关系维护

                           true 表示放弃关系维护

       -->

        <set name="employees" inverse="true" cascade="save-update,delete">

            <!-- 一对多建表，有外键

                hibernate机制：双向维护外键，在一和多那一方都配置外键

                column属性值：外键名称

             -->

            <key column="department_id"></key>

            <one-to-many class="k.domain.Employee"></one-to-many>

        </set>

    </class>

</hibernate-mapping>

Employee.hbm.xml

<?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="k.domain.Employee" table="t_employee">

        <id name="id" column="id" type="java.lang.Integer">

            <!-- 设置数据库表id增长策略  native:生成表id值就是主键自动增长  uuid -->

            <generator class="native"></generator>

        </id>

        <!-- 配置其他属性和表字段对应  name属性：实体类属性名称 column属性：生成表字段名称 -->

        <property name="name" column="name" type="java.lang.String" length="64"></property>

        <property name="email" column="email" type="java.lang.String" length="64"></property>

        <property name="hireDate" column="hireDate" type="java.util.Date"></property>

        <property name="salary" column="salary" type="java.lang.Float"></property>

        <property name="password" column="password" type="java.lang.String" length="64"></property>

        <property name="grade" column="grade" type="java.lang.Integer" length="3"></property>

        <many-to-one name="department" class="k.domain.Department" column="department_id"></many-to-one>

    </class>

</hibernate-mapping>

Department

package k.domain;

import java.util.Set;

public class Department {

    private Integer id;

    private String name;

    private Set<Employee> employees;

    public Department() {

    }

    public Department(String name) {

        this.name = name;

    }

    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 Set<Employee> getEmployees() {

        return employees;

    }

    public void setEmployees(Set<Employee> employees) {

        this.employees = employees;

    }

}

Employee

package k.domain;

import java.util.Date;

public class Employee {

    private Integer id;

    private String name;

    private String email;

    private Date hireDate;

    private Float salary;

    private String password;

    private Integer grade;

    private Department department;

    private String department_id;

    public Employee(Integer id, String password) {

        this.id = id;

        this.password = password;

    }

    public Employee() {

    }

    public Employee(String name, String password, String email, Date hireDate, Float salary, Integer grade) {

        this.name = name;

        this.email = email;

        this.hireDate = hireDate;

        this.salary = salary;

        this.password = password;

        this.grade = grade;

    }

    public String getDepartment_id() {

        return department_id;

    }

    public void setDepartment_id(String department_id) {

        this.department_id = department_id;

    }

    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 getEmail() {

        return email;

    }

    public void setEmail(String email) {

        this.email = email;

    }

    public Date getHireDate() {

        return hireDate;

    }

    public void setHireDate(Date hireDate) {

        this.hireDate = hireDate;

    }

    public Float getSalary() {

        return salary;

    }

    public void setSalary(Float salary) {

        this.salary = salary;

    }

    public String getPassword() {

        return password;

    }

    public void setPassword(String password) {

        this.password = password;

    }

    public Integer getGrade() {

        return grade;

    }

    public void setGrade(Integer grade) {

        this.grade = grade;

    }

    public Department getDepartment() {

        return department;

    }

    public void setDepartment(Department department) {

        this.department = department;

    }

}

EmployeeForm

package k.form;

import org.apache.struts.action.ActionForm;

import java.util.Date;

public class EmployeeForm extends ActionForm {

    private String id;

    private String name;

    private String email;

    private Date hireDate;

    private Float salary;

    private String password;

    private Integer grade;

    private String department_id;

    public String getEmail() {

        return email;

    }

    public void setEmail(String email) {

        this.email = email;

    }

    public Date getHireDate() {

        return hireDate;

    }

    public void setHireDate(Date hireDate) {

        this.hireDate = hireDate;

    }

    public Float getSalary() {

        return salary;

    }

    public void setSalary(Float salary) {

        this.salary = salary;

    }

    public Integer getGrade() {

        return grade;

    }

    public void setGrade(Integer grade) {

        this.grade = grade;

    }

    public String getDepartment_id() {

        return department_id;

    }

    public void setDepartment_id(String department_id) {

        this.department_id = department_id;

    }

    public String getPassword() {

        return password;

    }

    public void setPassword(String password) {

        this.password = password;

    }

    public String getId() {

        return id;

    }

    public void setId(String id) {

        this.id = id;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

}

EncodingFilter

package k.listener;

import javax.servlet.*;

import javax.servlet.http.HttpServlet;

import java.io.IOException;

public class EncodingFilter extends HttpServlet implements Filter {

    @Override

    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse,

                         FilterChain filterChain) throws IOException, ServletException {

        servletRequest.setCharacterEncoding("utf-8");

        servletResponse.setCharacterEncoding("utf-8");

        // System.out.println("========== set utf-8 ok ==========");

        filterChain.doFilter(servletRequest, servletResponse);

    }

    @Override

    public void init(FilterConfig filterConfig) throws ServletException {

    }

}

StartSystemListener

package k.listener;

import k.util.WebHelper;

import javax.servlet.ServletContext;

import javax.servlet.ServletContextEvent;

import javax.servlet.ServletContextListener;

public class StartSystemListener implements ServletContextListener {

    @Override

    public void contextInitialized(ServletContextEvent sce) {

        //1.将项目上下文路径(request.getContextPath())放置到application域中.

        ServletContext application = sce.getServletContext();

        String app_path = application.getContextPath();

        application.setAttribute("APP_PATH", app_path);

        System.out.println("========== APP_PATH = " + app_path);

        WebHelper.setApp_Path(app_path);

    }

    @Override

    public void contextDestroyed(ServletContextEvent sce) {

    }

}

DepartmentService

package k.service;

import k.basic.BasicService;

public interface DepartmentService extends BasicService {

}

EmployeeService

package k.service;

import k.basic.BasicService;

import k.domain.Employee;

import java.io.Serializable;

import java.util.List;

public interface EmployeeService extends BasicService {

    Employee checkEmployee(Employee e);

    List getEmployeeList(int pageSize, int pageNo);

    List getEmployeeList();

    int getPageCount(int pageSize);

}

DepartmentServiceImpl

package k.service.impl;

import k.basic.BasicAbstractService;

import k.service.DepartmentService;

public class DepartmentServiceImpl extends BasicAbstractService implements DepartmentService {

}

EmployeeServiceImpl

package k.service.impl;

import k.basic.BasicAbstractService;

import k.domain.Employee;

import k.service.EmployeeService;

import java.io.Serializable;

import java.util.List;

public class EmployeeServiceImpl extends BasicAbstractService implements EmployeeService {

    @Override

    public Employee checkEmployee(Employee e) {

        String hql = "from Employee c where c.id=? and c.password=?";

        Object[] parameters = new Object[]{e.getId(), e.getPassword()};

        List list = executeQuery(hql, parameters);

        return list != null && list.size() > 0 ? (Employee) list.get(0) : null;

    }

    @Override

    public List getEmployeeList(int pageSize, int pageNo) {

        String hql = "from Employee order by id";

        return this.executeQueryByPage(hql, null, pageNo, pageSize);

    }

    @Override

    public int getPageCount(int pageSize) {

        String sql = "select count(*) from Employee";

        Object obj = this.uniqueQuery(sql, null);

        int rowCount = Integer.parseInt(obj.toString());

        return (rowCount - 1) / pageSize + 1;

    }

    @Override

    public List getEmployeeList() {

        String hql = "from Employee ";

        return executeQuery(hql, null);

    }

}

WebHelper

package k.util;

import java.util.UUID;

public class WebHelper {

    public static String getApp_Path() {

        return APP_PATH;

    }

    public static void setApp_Path(String appPath) {

        APP_PATH = appPath;

    }

    private static String APP_PATH = "";

    public static String getNewFileName(String fileName) {

        int beginIndex = fileName.lastIndexOf(".");

        return UUID.randomUUID().toString() + fileName.substring(beginIndex, fileName.length());

    }

}

add.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<html>

<head>

    <title>添加雇员</title>

</head>

<body>

<h1>添加雇员</h1>

<form action="${APP_PATH}/employee.do?action=addEmployee" method="post">

    <table>

        <tr>

            <td>name:</td>

            <td><input type="text" name="name" value="张三4"></td>

        </tr>

        <tr>

            <td>email:</td>

            <td><input type="text" name="email" value="zhangsan@qq.com"></td>

        </tr>

        <tr>

            <td>salary:</td>

            <td><input type="text" name="salary" value="5000"></td>

        </tr>

        <tr>

            <td>password:</td>

            <td><input type="password" name="password" value="1"></td>

        </tr>

        <tr>

            <td>grade:</td>

            <td><input type="text" name="grade" value="1"></td>

        </tr>

        <tr>

            <td>department_id:</td>

            <td><select name="department_id">

                <option value="1" selected>部门1</option>

            </select></td>

        </tr>

        <tr>

            <td><input type="submit" name="sub1" value="添加"></td>

            <td><input type="reset" name="reset" value="重置"></td>

        </tr>

    </table>

</form>

</body>

</html>

list.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core_rt" %>

<html>

<head>

    <title>管理员列表</title>

</head>

<body>

<h1>管理员列表</h1>

<form action="${APP_PATH}/login.do?action=doLogin" method="post">

    <table>

        <tr>

            <td>id</td>

            <td>name</td>

            <td>email</td>

            <td>grade</td>

            <td>salary</td>

            <td>修改用户</td>

            <td>删除用户</td>

        </tr>

        <c:forEach var="emp" items="${employeeList}">

            <tr>

                <td>${emp.id}</td>

                <td>${emp.name}</td>

                <td>${emp.email}</td>

                <td>${emp.grade}</td>

                <td>${emp.salary}</td>

                <td><a href="${APP_PATH}/employee.do?action=updateUI&id=${emp.id}">修改用户</a></td>

                <td><a href="${APP_PATH}/employee.do?action=delEmp&id=${emp.id}">删除用户</a></td>

            </tr>

        </c:forEach>

    </table>

    <c:forEach var="i" begin="1" end="${pageCount}">

        <a href="${APP_PATH}/employee.do?action=getList&pageNow=${i}">${i}</a>

    </c:forEach>

</form>

</body>

</html>

update.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core_rt" %>

<html>

<head>

    <title>修改用户</title>

</head>

<body>

<form id="form" action="${APP_PATH}/employee.do?action=update" method="post">

    <table>

        <tr hidden>

            <td>id</td>

            <td><input type="text" name="id" value="${emp.id}"></td>

        </tr>

        <tr>

            <td>name</td>

            <td><input type="text" name="name" value="${emp.name}"></td>

        </tr>

        <tr>

            <td>email</td>

            <td><input type="text" name="email" value="${emp.email}"></td>

        </tr>

        <tr>

            <td>grade</td>

            <td><input type="text" name="grade" value="${emp.grade}"></td>

        </tr>

        <tr>

            <td>salary</td>

            <td><input type="text" name="salary" value="${emp.salary}"></td>

        </tr>

        <tr>

            <td><input type="submit" name="salary" value="修改"></td>

        </tr>

    </table>

</form>

</body>

</html>

err.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<html>

<head>

    <title>操作失败</title>

</head>

<body>

<h1>操作失败</h1>

<a href="#">操作失败，返回主界面</a>

<a href="${APP_PATH}/employee.do?action=getList">返回列表</a>

<a href="${APP_PATH}/login.do?action=login">返回登录</a>

</body>

</html>

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<html>

<head>

    <title>管理员登录</title>

</head>

<body>

<h1>管理员登录</h1>

<form action="${APP_PATH}/login.do?action=doLogin" method="post">

    <table>

        <tr>

            <td>id:</td>

            <td><input type="text" name="id" value="1"></td>

        </tr>

        <tr>

            <td>name:</td>

            <td><input type="text" name="name" value="1哈哈"></td>

        </tr>

        <tr>

            <td>pwd:</td>

            <td><input type="password" name="password" value="1"></td>

        </tr>

        <tr>

            <td><input type="submit" name="sub1" value="登录"></td>

            <td><input type="reset" name="reset" value="重置"></td>

        </tr>

    </table>

</form>

</body>

</html>

main.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<html>

<head>

    <title>登录成功</title>

</head>

<body>

<h1>登录成功</h1>

<a href="${APP_PATH}/login.do?action=login">返回登录</a>

<h2>欢迎 【${employee.name}】 您所在的部门是 【${employee.getDepartment().getName()} 】请选择您要进行的操作</h2>

<a href="${APP_PATH}/employee.do?action=addEmployeeUI">添加雇员</a> <br/>

<a href="${APP_PATH}/employee.do?action=getList">显示雇员</a> <br/>

<a href="#">查询雇员</a> <br/>

<a href="#">退出系统</a> <br/>

<a href="${APP_PATH}/employee.do?action=getList">返回列表</a>

</body>

</html>

ok.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<html>

<head>

    <title>成功</title>

</head>

<body>

<h1>成功</h1>

<a href="${APP_PATH}/employee.do?action=addEmployeeUI">返回继续添加</a>

<a href="${APP_PATH}/employee.do?action=getList">返回列表</a>

<a href="${APP_PATH}/login.do?action=login">返回登录</a>

</body>

</html>

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<html>

  <head>

    <title>$Title$</title>

  </head>

  <body>

 <jsp:forward page="WEB-INF/jsp/login.jsp"></jsp:forward>

  </body>

</html>

jar包

EmployeeServiceImpl

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