struts2+hibernate 实现的CRUD

自己做的练手小程序，欢迎大家 批评指导 并 提出建议..

 

开发环境 - eclipse(myeclipse6.5) + tomcat 6 + mysql

 

下边只贴出主要代码.

 

 

struts.xml

 

<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
        "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
	<include file="struts-default.xml" />

	<package name="employee" extends="struts-default" namespace="/">

		<interceptors>
			<!-- 定义 核对登陆 的拦截器 -->
			<interceptor name="checkLogin"
				class="org.lzpeng.interceptor.CheckLogin" />
			<!-- 定义一个拦截器堆栈 -->
			<interceptor-stack name="default">
				<interceptor-ref name="checkLogin" />
				<interceptor-ref name="defaultStack" />
			</interceptor-stack>
		</interceptors>

		<!-- 设置全局默认拦截器 -->
		<default-interceptor-ref name="default" />

		<!-- 定义全局 result -->
		<global-results>
			<result name="login">viewPage/login.jsp</result>
		</global-results>

		<!-- 获得所有雇员 -->
		<action name="list" method="getAllEmployees"
			class="org.lzpeng.actions.EmployeesAction">
			<result name="success">/viewPage/employees.jsp</result>
		</action>

		<!-- 增加或更新雇员的表单需要加载所有的部门 -->
		<action name="storeOrUpdate" method="setForinsertOrUpdate"
			class="org.lzpeng.actions.EmployeesAction">
			<result name="success">viewPage/employeeForm.jsp</result>
		</action>

		<!-- 增加或更新雇员信息 -->
		<action name="insertOrUpdate" method="insertOrUpdate"
			class="org.lzpeng.actions.EmployeesAction">
			<result name="success" type="redirect-action">
				list!getAllEmployees
			</result>
			<result name="input">viewPage/employeeForm.jsp</result>
		</action>

		<!-- 删除雇员 -->
		<action name="delete" method="delete"
			class="org.lzpeng.actions.EmployeesAction">
			<result name="success" type="redirect-action">
				list!getAllEmployees
			</result>
		</action>
	</package>


	<package name="manager" extends="struts-default">

		<!-- 转发到登陆界面 -->
		<action name="login">
			<result>/viewPage/login.jsp</result>
		</action>

		<!-- 验证用户-->
		<action name="check" method="validateUser"
			class="org.lzpeng.actions.ManagerAction">
			<!-- 重复提交表单处理 -->
			<result name="invalid.token">/errorPage.jsp</result>
			<!-- 密码错误 -->
			<result name="input">/viewPage/login.jsp</result>
			<!-- Action名后 +!xxx  xxx为方法名 -->
			<result name="success" type="redirect-action">
				/list!getAllEmployees.action
			</result>
			<interceptor-ref name="token" />
			<interceptor-ref name="defaultStack" />
		</action>

	</package>
</struts>

 

BaseHibernateDAO.java

 

package org.lzpeng.dao.hibernate;

import java.util.List;

import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.criterion.Example;

/**
 * HIBERNATE 抽象基础类
 * <p>
 * 包含了简单的查询和增删改的方法
 * 
 * @author LZPeng
 * @version 1.0
 * @date 2008/7/20
 * @since JDK5
 */

public abstract class BaseHibernateDAO {

	@SuppressWarnings("unused")
	private Session session = null;

	/***************************************************************************
	 * select
	 * 
	 * @param clz
	 *            类实体
	 * @param id
	 *            必须实现 Serializable 接口
	 * @return ret Object
	 */
	protected Object get(Class<?> clz, java.io.Serializable id) {
		Object ret = null;
		Session session = getSession();

		try {
			ret = session.get(clz, id);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			this.closeSession();
		}
		return ret;
	}

	/***************************************************************************
	 * insert
	 * 
	 * @param item
	 *            需要增加的实体
	 */

	protected void add(Object item) {
		Transaction tx = null;
		Session session = getSession();
		try {
			tx = session.beginTransaction();
			session.save(item);
			tx.commit();
		} catch (Exception e) {
			if (null != tx) {
				tx.rollback();
			}
			e.printStackTrace();
		} finally {
			closeSession();
		}
	}

	/***************************************************************************
	 * update
	 * 
	 * @param item
	 *            需要更新的实体对象
	 */
	protected void update(Object item) {
		Transaction tx = null;
		Session session = getSession();

		try {
			tx = session.beginTransaction();
			session.update(item);
			tx.commit();
		} catch (Exception e) {
			if (null != tx) {
				tx.rollback();
			}
			e.printStackTrace();
		} finally {
			closeSession();
		}

	}

	/***************************************************************************
	 * delete
	 * 
	 * @param clz
	 *            类的实例
	 * @param id
	 *            实现 Serializable 的类
	 */

	protected void delete(Class<?> clz, java.io.Serializable id) {
		Transaction tx = null;
		Session session = getSession();

		try {
			tx = session.beginTransaction();
			session.delete(get(clz, id));
			tx.commit();
		} catch (Exception e) {
			if (null != tx) {
				tx.rollback();
			}
			e.printStackTrace();
		} finally {
			closeSession();
		}

	}

	/***************************************************************************
	 * 
	 * @param clazz
	 *            类实例
	 * @param condition
	 *            对应实体类的类型对象
	 * @return results Object 类型实体的 List 集合
	 * 
	 * @throws RuntimeException
	 *             if an error occured
	 */

	@SuppressWarnings("unchecked")
	protected List search(Class<?> clazz, Object condition) {
		try {
			List results = getSession().createCriteria(clazz).add(
					Example.create(condition)).list();

			return results;

		} catch (RuntimeException re) {
			throw re;
		} finally {
			closeSession();
		}
	}

	/***************************************************************************
	 * 获取 Hibernate session
	 * 
	 * @return Hibernate session
	 */

	protected Session getSession() {
		return HibernateUtil.getSession();
	}

	/**
	 * 设置 HIBERNATE session
	 * 
	 * @param session
	 */

	public void setSession(Session session) {
		this.session = session;
	}

	/**
	 * 关闭 session
	 */

	protected void closeSession() {
		this.session = null;
	}

}

 

EmployeesAction.java

 

package org.lzpeng.actions;

import org.lzpeng.vo.Department;
import org.lzpeng.vo.Employee;
import org.lzpeng.service.EmployeeService;

import org.lzpeng.service.DepartmentService;
import org.lzpeng.service.impl.DepartmentDaoService;
import org.lzpeng.service.impl.EmployeeDaoService;

import java.util.List;
import java.util.Map;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

/**
 * <p>
 * Employee 的 Action 控制类
 * </p>
 * 
 * @author LZPeng
 * @version 1.0
 * @date 2008/7/22
 * @see EmployeeService
 * @since JDK5
 */

public class EmployeesAction extends ActionSupport {
	private static final long serialVersionUID = -7351331038736790079L;

	private EmployeeService empService = new EmployeeDaoService();// 雇员服务类对象
	private DepartmentService deptService = new DepartmentDaoService();// 部门服务类对象

	private Employee employee = null; // 雇员
	private List<Employee> employees = null; // 雇员集合
	private List<Department> departments = null;// 部门集合

	/***************************************************************************
	 * 获得所有雇员的信息
	 * 
	 * @return SUCCESS
	 * 
	 */
	public String getAllEmployees() {
		employees = empService.getAllEmployees();
		return SUCCESS;
	}

	/***************************************************************************
	 * 增加或者更新雇员时需要将所有部门查出来显示给用户
	 * <p>
	 * 如果不在 action 将 departments 放入session 中 迭代器可以拿到值 , 但 <s:select / > 标签不可以..
	 * 
	 * @return SUCCESS
	 */

	@SuppressWarnings("unchecked")
	public String setForinsertOrUpdate() {
		departments = deptService.getAllDepartments();// 获得所有部门

		Map<String, List<Department>> session = ActionContext.getContext()
				.getSession();
		session.put("departments", departments); // 将部门信息放入 session

		if (employee != null && employee.getEmployeeid() != null) {
			/* 如果是更新,得到此雇员信息 */
			employee = empService.getEmployeeByID(employee.getEmployeeid());
		}
		return SUCCESS;
	}

	/***************************************************************************
	 * 执行插入或者更新
	 * 
	 * @return
	 */
	public String insertOrUpdate() {
		if (employee.getEmployeeid() == null) {
			empService.insertEmployee(employee);
		} else {
			empService.updateEmployee(employee);
		}
		return SUCCESS;
	}

	/***************************************************************************
	 * 通过ID删除雇员
	 * 
	 */
	public String delete() {
		empService.deleteEmployeeByID(employee.getEmployeeid());
		return SUCCESS;
	}

	/***************************************************************************
	 * action 的默认执行方法
	 * 
	 * @return SUCCESS
	 */
	@Override
	public String execute() {
		return SUCCESS;
	}

	// -------------------------------------------------------------------------
	// Setter and Getter methods
	// -------------------------------------------------------------------------
	public List<Employee> getEmployees() {
		return employees;
	}

	public void setEmployees(List<Employee> employees) {
		this.employees = employees;
	}

	public Employee getEmployee() {
		return employee;
	}

	public void setEmployee(Employee employee) {
		this.employee = employee;
	}

	public List<Department> getDepartments() {
		return departments;
	}

	public void setDepartments(List<Department> departments) {
		this.departments = departments;
	}

}

 

EmployeeDaoService.java

 

package org.lzpeng.service.impl;

import java.util.List;

import org.lzpeng.service.EmployeeService;
import org.lzpeng.vo.Employee;
import org.lzpeng.dao.EmployeeDao;
import org.lzpeng.dao.hibernate.EmployeeHibernateDao;

/**
 * 对雇员的持久化操作
 * <p>
 * 继承自 EmployeeService
 * 
 * @author LZPeng
 * @version 1.0
 * @date 2008/7/20
 * @see EmployeeService
 * @since JDK5
 */
public class EmployeeDaoService implements EmployeeService {
	private EmployeeDao dao;

	public EmployeeDaoService() {
		this.dao = new EmployeeHibernateDao();// 雇员的数据库操作类对象
	}

	/***************************************************************************
	 * 获得所有雇员信息
	 * 
	 * @return Employee的集合List
	 */
	public List<Employee> getAllEmployees() {
		return dao.getAllEmployees();
	}

	public void updateEmployee(Employee emp) {
		dao.update(emp);
	}

	public void deleteEmployeeByID(Integer id) {
		dao.delete(id);
	}

	/***************************************************************************
	 * 根据雇员ID获得雇员POJO对象
	 * 
	 * @param id
	 *            雇员编号
	 * @return 雇员POJO对象
	 */
	public Employee getEmployeeByID(Integer id) {
		return dao.getEmployee(id);
	}

	/***************************************************************************
	 * 增加一个雇员
	 * 
	 * @param emp
	 *            Employee对象
	 */
	public void insertEmployee(Employee emp) {
		dao.insert(emp);
	}
}

 

 

 

 

未解决的(主要)问题:

 

问题一 :

第一次访问到login.jsp, 此界面包含(include) head.jsp  但head.jsp不能正常显示.报异常.刷新界面(F5)后,正常显示,异常消失.

问题二 : 关于非空验证提示信息重复

在登录界面,连续2次在不填写数据情况下点 登录 按钮,提示重复..