S2SH CRUD 整合

采用的框架 Struts2+Spring4+Hbiernate4.

目录结构

：   

EmployeeAction:

 package com.xx.ssh.actions;

 import java.io.ByteArrayInputStream;
 import java.io.InputStream;
 import java.io.UnsupportedEncodingException;
 import java.util.Date;
 import java.util.Map;
 import org.apache.struts2.interceptor.RequestAware;
 import com.opensymphony.xwork2.ActionSupport;
 import com.opensymphony.xwork2.ModelDriven;
 import com.opensymphony.xwork2.Preparable;
 import com.xx.ssh.entities.Employee;
 import com.xx.ssh.service.DepartmentService;
 import com.xx.ssh.service.EmployeeService;

 public class EmployeeAction extends ActionSupport implements RequestAware,
         ModelDriven<Employee>, Preparable {

     private static final long serialVersionUID = 1L;

     private EmployeeService employssService;

     public void setEmployssService(EmployeeService employssService) {
         this.employssService = employssService;
     }

     private DepartmentService departmentService;

     public void setDepartmentService(DepartmentService departmentService) {
         this.departmentService = departmentService;
     }

     public String list() {
         request.put("employees", employssService.getAll());
         System.out.println("request: " + request.size());
         return "list";
     }

     private Integer id;

     public void setId(Integer id) {
         this.id = id;
     }

     private InputStream inputStream;

     public InputStream getInputStream() {
         return inputStream;
     }
     //回调函数。判断是否删除
     public String delete() {
         try {
             employssService.delete(id);
             inputStream = new ByteArrayInputStream("1".getBytes("UTF-8"));
         } catch (Exception e) {
             e.printStackTrace();
             try {
                 inputStream = new ByteArrayInputStream("0".getBytes("UTF-8"));
             } catch (UnsupportedEncodingException e1) {
                 e1.printStackTrace();
             }
         }
         return "ajax-success";
     }

     private String lastName;

     public void setLastName(String lastName) {
         this.lastName = lastName;
     }
     //回调函数。判断用户名是否存在。
     public String validateLastName() {
         try {
             if (employssService.lastNameIsValid(lastName)) {

                 inputStream = new ByteArrayInputStream("1".getBytes("utf-8"));
             } else {

                 inputStream = new ByteArrayInputStream("0".getBytes("utf-8"));
             }
         } catch (Exception e) {

         }
         return "ajax-success";
     }

     private Employee model;

     /*
      * 可以根椐ID来判断为save方法准备的model是new的还是数据库获取的。
      */
     public void prepareSave() {
         if (id == null) {
             model = new Employee();
         } else {
             model = employssService.get(id);
         }
     }

     public String save() {

         if (id == null) {
             model.setCreateTime(new Date());

         }
         employssService.saveOrUpdate(model);
         return SUCCESS;
     }

     public String input() {
         request.put("departments", departmentService.getAll());
         return INPUT;
     }

     public void prepareInput() {
         if (id != null) {
             model = employssService.get(id);
         }

     }

     private Map<String, Object> request;

     @Override
     public void setRequest(Map<String, Object> arg0) {
         this.request = arg0;

     }

     @Override
     public Employee getModel() {

         return model;
     }

     @Override
     public void prepare() throws Exception {

     }

 }

SSHDateConverter:自定义转换器

 package com.xx.ssh.converters;

 import java.text.DateFormat;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
 import java.util.Date;
 import java.util.Map;

 import org.apache.struts2.util.StrutsTypeConverter;

 public class SSHDateConverter extends StrutsTypeConverter {

     private DateFormat dateFormat;
     {
         dateFormat = new SimpleDateFormat("yyyy-MM-dd");
     }

     @Override
     public Object convertFromString(Map context, String[] values, Class toClass) {
         if(toClass == Date.class){
             try {
                 return dateFormat.parse(values[0]);
             } catch (ParseException e) {
                 e.printStackTrace();
             }
         }

         return null;
     }

     @Override
     public String convertToString(Map context, Object o) {
         if(o instanceof Date){
             return dateFormat.format((Date)o);
         }
         return null;
     }

 }

BaseDao：SessionFactory

 package com.xx.ssh.dao;

 import org.hibernate.Session;
 import org.hibernate.SessionFactory;

 public class BaseDao {
     private SessionFactory  sessionFactory;

     public void setSessionFactory(SessionFactory sessionFactory) {
         this.sessionFactory = sessionFactory;
     }

     public Session getSession() {
         return  this.sessionFactory.getCurrentSession();
     }
 }

DepartmentDao:Dao层

 package com.xx.ssh.dao;

 import java.util.List;

 import com.xx.ssh.entities.Department;

 public class DepartmentDao extends BaseDao{
     public List<Department> getAll(){
         String hql="FROM Department";
         return getSession().createQuery(hql).list();
     }
 }

EmployeeDao

 package com.xx.ssh.dao;

 import java.util.List;

 import org.hibernate.Query;
 import org.hibernate.Session;
 import org.hibernate.SessionFactory;

 import com.xx.ssh.entities.Employee;

 public class EmployeeDao extends BaseDao {

     public void delete(Integer id){
         String hql="delete from Employee e where e.id=? ";
         getSession().createQuery(hql).setInteger(0,id).executeUpdate();
     }

     public List<Employee> getAll(){

         String hql="from Employee e LEFT OUTER JOIN FETCH e.department";
         return getSession().createQuery(hql).list();
     }
     public void saveOrUpdate(Employee employee){
         getSession().saveOrUpdate(employee);
     }
     public Employee getEmployeeByLastName(String lastName){

         String hql="from Employee e where e.lastName=? ";
         Query query = getSession().createQuery(hql).setString(0,lastName);
         return (Employee)query.uniqueResult();
     }
     public Employee get(Integer id){
         return (Employee) getSession().get(Employee.class,id);

     }
 }

实体：Department

 package com.xx.ssh.entities;

 public class Department {
     private Integer id;
     private String departmentName;

     public Integer getId() {
         return id;
     }

     public void setId(Integer id) {
         this.id = id;
     }

     public String getDepartmentName() {
         return departmentName;
     }

     public void setDepartmentName(String departmentName) {
         this.departmentName = departmentName;
     }
 }

实体：Employee

 package com.xx.ssh.entities;

 import java.util.Date;

 public class Employee {

     //
     private Integer id;
     //不能被修改
     private String lastName;
     private String email;
     //从前端传入的是string类型，所以需要注意转换。
     private Date birth;
     //不能被修改
     private Date createTime;
     //单向n-1的关联关系
     private Department department;

     public Integer getId() {
         return id;
     }
     public void setId(Integer id) {
         this.id = id;
     }
     public String getLastName() {
         return lastName;
     }
     public void setLastName(String lastName) {
         this.lastName = lastName;
     }
     public String getEmail() {
         return email;
     }
     public void setEmail(String email) {
         this.email = email;
     }
     public Date getBirth() {
         return birth;
     }
     public void setBirth(Date birth) {
         this.birth = birth;
     }
     public Date getCreateTime() {
         return createTime;
     }
     public void setCreateTime(Date createTime) {
         this.createTime = createTime;
     }
     public Department getDepartment() {
         return department;
     }
     public void setDepartment(Department department) {
         this.department = department;
     }

     @Override
     public String toString() {
         return "Employee [birth=" + birth + ", createTime=" + createTime
                 + ", department.id=" + department + ", email=" + email + ", id="
                 + id + ", lastName=" + lastName + "]";
     }
 }

表与类映射文件配置。

Department.hbm.xml

 <?xml version="1.0"?>
 <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
 "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 <!-- Generated 2014-7-22 11:21:48 by Hibernate Tools 3.4.0.CR1 -->
 <hibernate-mapping>
     <class name="com.xx.ssh.entities.Department" table="SSH_DEPARTMENT">
         <id name="id" type="java.lang.Integer">
             <column name="ID" />
             <generator class="native" />
         </id>

         <property name="departmentName" type="java.lang.String">
             <column name="DEPARTMENT_NAME" />
         </property>

     </class>
 </hibernate-mapping>

Employee.hbm.xml

 <?xml version="1.0"?>
 <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
 "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 <!-- Generated 2014-7-22 11:21:48 by Hibernate Tools 3.4.0.CR1 -->
 <hibernate-mapping>
     <class name="com.xx.ssh.entities.Employee" table="SSH_EMPLOYEE">

         <id name="id" type="java.lang.Integer">
             <column name="ID" />
             <generator class="native" />
         </id>

         <property name="lastName" type="java.lang.String">
             <column name="LAST_NAME" />
         </property>

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

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

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

         <!-- 映射单向 n-1 的关联关系 -->
         <many-to-one name="department" class="com.xx.ssh.entities.Department" lazy="false">
             <column name="DEPARTMENT_ID" />
         </many-to-one>

     </class>
 </hibernate-mapping>

Service层：Department

 package com.xx.ssh.service;

 import java.util.List;

 import com.xx.ssh.dao.DepartmentDao;
 import com.xx.ssh.entities.Department;

 public class DepartmentService {
     private DepartmentDao departmentDao;

     public void setDepartmentDao(DepartmentDao departmentDao){
         this.departmentDao=departmentDao;
     }
     public List<Department>getAll(){
         return departmentDao.getAll();
     }

 }

Service层：Employee

 package com.xx.ssh.service;

 import java.util.List;

 import com.xx.ssh.dao.EmployeeDao;
 import com.xx.ssh.entities.Employee;

 public class EmployeeService {
     private EmployeeDao employeeDao;

     public void setEmployeeDao(EmployeeDao employeeDao)
     {
         this.employeeDao=employeeDao;
     }
     public boolean lastNameIsValid(String lastName){
         return employeeDao.getEmployeeByLastName(lastName)==null;
     }
     public void delete(Integer id){
         employeeDao.delete(id);
     }
     public void saveOrUpdate(Employee employee){
         employeeDao.saveOrUpdate(employee);
     }
     public List<Employee> getAll(){
         List<Employee> employees=employeeDao.getAll();
         /*employees.clear();*/
         System.out.println(employees.size());
         return employees;
     }
     public  Employee get(Integer id) {
         // TODO Auto-generated method stub
         return employeeDao.get(id);

     }

 }

配置文件：

applicationContext-beans.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"
     xsi:schemaLocation="http://www.springframework.org/schema/beans
     http://www.springframework.org/schema/beans/spring-beans.xsd">

     <bean id="employeeDao" class="com.xx.ssh.dao.EmployeeDao">
         <property name="sessionFactory" ref="sessionFactory"></property>
     </bean>

     <bean id="departmentDao" class="com.xx.ssh.dao.DepartmentDao">
         <property name="sessionFactory" ref="sessionFactory"></property>
     </bean>

     <bean id="employeeService" class="com.xx.ssh.service.EmployeeService">
         <property name="employeeDao" ref="employeeDao"></property>
     </bean>

     <bean id="departmentService" class="com.xx.ssh.service.DepartmentService">
         <property name="departmentDao" ref="departmentDao"></property>
     </bean>

     <bean id="employeeAction" class="com.xx.ssh.actions.EmployeeAction"
         scope="prototype">
         <property name="employssService" ref="employeeService"></property>
         <property name="departmentService" ref="departmentService"></property>
     </bean>
 </beans>

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:aop="http://www.springframework.org/schema/aop"
     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.xsd
         http://www.springframework.org/schema/aop
         http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
         http://www.springframework.org/schema/context
         http://www.springframework.org/schema/context/spring-context-4.0.xsd
         http://www.springframework.org/schema/tx
         http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">

     <!-- 导入资源文件 -->
     <context:property-placeholder location="classpath:db.properties"/>

     <!-- 配置 C3P0 数据源 -->
     <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
         <property name="user" value="${jdbc.user}"></property>
         <property name="password" value="${jdbc.password}"></property>
         <property name="driverClass" value="${jdbc.driverClass}"></property>
         <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
     </bean>

     <!-- 配置 SessionFactory -->
     <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
         <property name="dataSource" ref="dataSource"></property>
         <property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
         <property name="mappingLocations" value="classpath:com/xx/ssh/entities/*.hbm.xml"></property>
     </bean>

     <!-- 配置 Spring 的声明式事务 -->
     <!-- 1. 配置 hibernate 的事务管理器 -->
     <bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
         <property name="sessionFactory" ref="sessionFactory"></property>
     </bean>

     <!-- 2. 配置事务属性 -->
     <tx:advice id="txAdvice" transaction-manager="transactionManager">
         <tx:attributes>
             <tx:method name="get*" read-only="true"/>
             <tx:method name="lastNameIsValid" read-only="true"/>
             <tx:method name="*"/>
         </tx:attributes>
     </tx:advice>

     <!-- 3. 配置事务切入点, 再把事务属性和事务切入点关联起来 -->
     <aop:config>
         <aop:pointcut expression="execution(* com.xx.ssh.service.*.*(..))" id="txPointcut"/>
         <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointcut"/>
     </aop:config>
 </beans>

db.properties

 jdbc.user=root
 jdbc.password=root
 jdbc.driverClass=com.mysql.jdbc.Driver
 jdbc.jdbcUrl=jdbc:mysql:///spring6

 jdbc.initPoolSize=5
 jdbc.maxPoolSize=10

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-->

         <!-- 方言 -->
         <property name="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>

         <!--是否显示及格式化SQL-->
         <property name="hibernate.show_sql">true</property>
         <property name="hibernate.format_sql">true</property>

         <!-- 生成数据表的策略 -->
         <property name="hibernate.hbm2ddl.auto">update</property>

         <!--二级缓存相关  -->
     </session-factory>
 </hibernate-configuration>

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>

     <constant name="struts.enable.DynamicMethodInvocation" value="false" />
     <constant name="struts.devMode" value="true" />

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

         <!-- 定义新的拦截器栈, 配置 prepare 拦截器栈的 alwaysInvokePrepare 参数值为 false -->
         <interceptors>
             <interceptor-stack name="sshStack">
                 <interceptor-ref name="paramsPrepareParamsStack">
                     <param name="prepare.alwaysInvokePrepare">false</param>
                 </interceptor-ref>
             </interceptor-stack>
         </interceptors>

         <!-- 使用新的拦截器栈 -->
         <default-interceptor-ref name="sshStack"></default-interceptor-ref>

         <action name="emp-*" class="employeeAction"
             method="{1}">
             <result name="list">/WEB-INF/views/emp-list.jsp</result>
             <result type="stream" name="ajax-success">
                 <param name="contentType">text/html</param>
                 <param name="inputName">inputStream</param>
             </result>
             <result name="input">/WEB-INF/views/emp-input.jsp</result>
             <result name="success" type="redirect">/emp-list</result>
         </action>

     </package>

 </struts>

xwork-conversion.properties :时间转换器配置文件。

java.util.Date=com.xx.ssh.converters.SSHDateConverter

web.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
     http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

     <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>  <!-- 为spring添加监听器 -->
     <!-- 配置 Struts2 的 Filter -->
     <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>

JSP:

emp-input.jsp:

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<!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>
<script type="text/javascript" src="${pageContext.request.contextPath}/scripts/jquery-1.8.0.js"></script>
<script type="text/javascript">
    $(function(){
        $(":input[name=lastName]").change(function(){
            var val= $(this).val();
            val=$.trim(val);
            var $this=$(this);
            if(val!=""){
                $this.nextAll("font").remove();
                var url="emp-validateLastName";
                var args={"lastName":val,"time":new Date()};

                $.post(url,args,function(data){

                    //表示可用
                    if(data == "1"){
                        $this.after("<font color='green'>LastName可用</font>" );
                    }
                    //表示不可用
                    else if(data == "0") {
                        $this.after("<font color='red'>LastName不可用</font>" );
                    }else{
                        alert("服务器错误");
                    }
                })
            }else{
                //alert("lastName 不能为空");
                var i=$(this).val("");
                alert(i);
                //this.focus();
            }
        })
    })
</script>
</head>
<body>

    <s:debug></s:debug>

    <h4>Employee Input Page</h4>

    <s:form action="emp-save" method="post">
        <s:if test="id != null">
            <s:textfield name="lastName" label="LastName" disabled="true"></s:textfield>
            <s:hidden name="id"></s:hidden>
            <%--
            <!-- 通过添加隐藏域的方式把未显式提交的字段值提交到服务器 -->
            <s:hidden name="lastName"></s:hidden>
            <s:hidden name="createTime"></s:hidden>
            --%>
        </s:if>
        <s:else>
            <s:textfield name="lastName" label="LastName"></s:textfield>
        </s:else>

        <s:textfield name="email" label="Email"></s:textfield>
        <s:textfield name="birth" label="Birth"></s:textfield>

        <s:select list="#request.departments"
            listKey="id" listValue="departmentName" name="department.id"
            label="Department"></s:select>
        <s:submit></s:submit>
    </s:form>

</body>
</html>

emp-list.jsp:

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%><!--  -->
<%@ taglib prefix="s" uri="/struts-tags"%>

<!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>
<script type="text/javascript" src="${pageContext.request.contextPath }/scripts/jquery-1.8.0.js"></script>
<script type="text/javascript" >
    $(function(){
        //1.点击delete时，弹出确定是要删除xx的信息吗。若确定，删除。反之。取消
        $(".delete").click(function(){
            var lastName=$(this).next(":input").val();
            var flag=confirm("确定是要删除"+lastName+"信息吗？");
            if(flag){
                var $tr=$(this).parent().parent();

                //删除，使用ajax方式 。
                 var url=this.href;
                 var args={"time":new Date()};
                 $.post(url,args,function(data){
                     //若data的返回值为1.则提示删除成功，且把当前行删除 。
                     if(data=="1"){
                         alert("删除成功");
                         $tr.remove();
                     }else{
                         alert("删除失败");
                     }
                 });
            }
            //取消默认行为。
            return false;
        });

    });

</script>
</head>
<body>
    <h4>Employee List Page</h4>
    <s:if test="#request.employees == null || #request.employees.size()==0">
        没有任何员工信息;
    </s:if>
    <s:else>
        <table border="1" cellpadding="10" cellspacing="0">
            <tr>
                <td>ID</td>
                <td>LASTNAME</td>
                <td>EMAIL</td>
                <td>BIRTH</td>
                <td>CREATETIME</td>
                <td>DEPT</td>
                <td>DELETE</td>
                <td>Edit</td>
            </tr>
        <s:iterator value="#request.employees">
            <tr>
                <td>${id } </td>
                <td>${lastName }</td>
                <td>${email }</td>
                <td>
                    <s:date name="birth" format="yyyy-MM-dd"/>
                </td>
                <td>
                    <s:date name="birth" format="yyyy-MM-dd hh:mm:ss"/>
                </td>
                <td>${department.departmentName }</td>
                <td><a href="emp-delete?id=${id }" class="delete">Delete</a>
                    <input type="hidden" value="${lastName }"/>
                </td>
                <td><a href="emp-input?id=${id }">Edit</a></td>
            </tr>
        </s:iterator>
        </table>
    </s:else>
</body>
</html>

整合过程出现的异常请点我：