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..