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SSH_框架整合2—查询显示
4. 完成功能.
(1)com.atguigu.ssh.actions包下新建EmployeeAction.java
1 package com.atguigu.ssh.actions; 2 3 import java.util.Map; 4 5 import org.apache.struts2.interceptor.RequestAware; 6 7 import com.atguigu.ssh.service.EmployeeService; 8 import com.opensymphony.xwork2.ActionSupport; 9 10 public class EmployeeAction extends ActionSupport implements RequestAware{11 /**12 * 13 */14 private static final long serialVersionUID = 1L;15 16 private EmployeeService employeeService;17 18 public void setEmployeeService(EmployeeService employeeService){19 this.employeeService=employeeService;20 }21 22 public String list(){23 request.put("employees", employeeService.getAll()); 24 return "list";25 }26 27 //放到页面里28 private Map<String,Object> request;29 @Override30 public void setRequest(Map<String, Object> arg0) {31 this.request=arg0;32 }33 34 }
com.atguigu.ssh.dao包下新建EmployeeDao.java
1 package com.atguigu.ssh.dao; 2 3 import java.util.List; 4 5 import org.hibernate.Session; 6 import org.hibernate.SessionFactory; 7 8 import com.atguigu.ssh.entities.Employee; 9 10 public class EmployeeDao {11 12 private SessionFactory sessionFactory;13 14 public void setSessionFactory(SessionFactory sessionFactory){15 this.sessionFactory=sessionFactory;16 }17 18 public Session getSession(){19 return this.sessionFactory.getCurrentSession();20 }21 22 public List<Employee> getAll(){23 String hql="FROM Employee e LEFT OUTER JOIN FETCH e.department";24 return getSession().createQuery(hql).list();25 }26 }
com.atguigu.ssh.service包下新建EmployeeService.java
1 package com.atguigu.ssh.service; 2 3 import java.util.List; 4 5 import com.atguigu.ssh.dao.EmployeeDao; 6 import com.atguigu.ssh.entities.Employee; 7 8 public class EmployeeService { 9 10 private EmployeeDao employeeDao;11 public void setEmployeeDao(EmployeeDao employeeDao){12 this.employeeDao=employeeDao;13 }14 15 public List<Employee> getAll(){16 List<Employee> employees = employeeDao.getAll();17 return employees;18 }19 }
(2)完善applicationContext-beans.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> 5 6 <bean id="employeeDao" class="com.atguigu.ssh.dao.EmployeeDao"> 7 <property name="sessionFactory" ref="sessionFactory"></property> 8 </bean> 9 10 <bean id="employeeService" class="com.atguigu.ssh.service.EmployeeService">11 <property name="employeeDao" ref="employeeDao"></property>12 </bean>13 14 <bean id="employeeAction" class="com.atguigu.ssh.actions.EmployeeAction"15 scope="prototype">16 <property name="employeeService" ref="employeeService"></property>17 </bean>18 </beans>
(3)完善struts.xml
1 <?xml version="1.0" encoding="UTF-8" ?> 2 <!DOCTYPE struts PUBLIC 3 "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" 4 "http://struts.apache.org/dtds/struts-2.3.dtd"> 5 6 <struts> 7 8 <constant name="struts.enable.DynamicMethodInvocation" value="false" /> 9 <constant name="struts.devMode" value="true" />10 11 <package name="default" namespace="/" extends="struts-default">12 <action name="emp-*" class="employeeAction"13 method="{1}">14 <result name="list">/WEB-INF/views/emp-list.jsp</result>15 </action>16 </package>17 18 </struts>
(4)WebContent下新建index.jsp
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4 <html> 5 <head> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7 <title>Insert title here</title> 8 </head> 9 <body>10 <a href="emp-list">显示所有员工信息List All Employees</a>11 </body>12 </html>
(5)WebContent-views-emp-list.jsp
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib prefix="s" uri="/struts-tags" %> 4 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 5 <html> 6 <head> 7 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 8 <title>Insert title here</title> 9 </head>10 <body>11 <h3>Employee List Page</h3>12 13 <s:if test="#request.employees == null ||#request.size()==0">14 没有员工信息15 </s:if>16 <s:else>17 <table border="1" cellpadding="10" cellspacing="0">18 <tr>19 <td>ID</td>20 <td>LASTNAME</td>21 <td>EMAIL</td>22 <td>BIRTH</td>23 <td>CREATETIME</td>24 <td>DEPT</td>25 </tr>26 <s:iterator value="#request.employees">27 <tr>28 <td>${id}</td>29 <td>${lastName}</td>30 <td>${email }</td>31 <td>${birth}</td>32 <td>${createTime}</td>33 <td>${department.departmentName}</td>34 </tr>35 </s:iterator>36 </table>37 </s:else>38 </body>39 </html>
(6)修改下web.xml中的信息
1 <context-param>2 <param-name>contextConfigLocation</param-name>3 <param-value>classpath:applicationContext*.xml</param-value>4 </context-param>
SSH_框架整合2;
SSH_框架整合2—查询显示
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