基于Struts2+Hibernate5框架实现一个教师信息管理系统。

好的，以下是实现教师信息管理系统的具体步骤：

1. 搭建开发环境：安装JDK、Tomcat、MySQL、Eclipse等开发工具和软件。

2. 创建数据库：创建一个名为teacher_db的数据库，其中包含teacher表，用于存储教师信息。表结构如下：

CREATE TABLE teacher (
  id INT(11) NOT NULL AUTO_INCREMENT,
  name VARCHAR(20) NOT NULL,
  gender VARCHAR(10) NOT NULL,
  age INT(11) NOT NULL,
  subject VARCHAR(20) NOT NULL,
  PRIMARY KEY (id)
) ENGINE=INNODB DEFAULT CHARSET=utf8;

3. 创建项目：使用Eclipse创建一个基于Struts2+Hibernate5框架的Web项目。

4. 配置数据库连接：在项目的src/main/resources目录下创建hibernate.cfg.xml文件，配置数据库连接信息。

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/teacher_db?useUnicode=true&amp;characterEncoding=UTF-8&amp;useSSL=false</property>
    <property name="hibernate.connection.username">root</property>
    <property name="hibernate.connection.password">root</property>
    <property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>
    <property name="hibernate.show_sql">true</property>
    <property name="hibernate.format_sql">true</property>
    <property name="hibernate.hbm2ddl.auto">update</property>
    <mapping class="com.example.teacher.model.Teacher"/>
  </session-factory>
</hibernate-configuration>

5. 创建Model类：在src/main/java目录下创建Teacher类，用于映射teacher表。

package com.example.teacher.model;

public class Teacher {
  private int id;
  private String name;
  private String gender;
  private int age;
  private String subject;

  // getter and setter methods

  // toString method
}

6. 创建DAO类：在src/main/java目录下创建TeacherDAO类，用于操作数据库。

package com.example.teacher.dao;

import java.util.List;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.query.Query;
import com.example.teacher.model.Teacher;
import com.example.teacher.util.HibernateUtil;

public class TeacherDAO {
  private SessionFactory sessionFactory;

  public TeacherDAO() {
    sessionFactory = HibernateUtil.getSessionFactory();
  }

  public void addTeacher(Teacher teacher) {
    Session session = sessionFactory.openSession();
    Transaction tx = null;
    try {
      tx = session.beginTransaction();
      session.save(teacher);
      tx.commit();
    } catch (Exception e) {
      if (tx != null) {
        tx.rollback();
      }
    } finally {
      session.close();
    }
  }

  public void updateTeacher(Teacher teacher) {
    Session session = sessionFactory.openSession();
    Transaction tx = null;
    try {
      tx = session.beginTransaction();
      session.update(teacher);
      tx.commit();
    } catch (Exception e) {
      if (tx != null) {
        tx.rollback();
      }
    } finally {
      session.close();
    }
  }

  public void deleteTeacher(int id) {
    Session session = sessionFactory.openSession();
    Transaction tx = null;
    try {
      tx = session.beginTransaction();
      Teacher teacher = (Teacher) session.get(Teacher.class, id);
      session.delete(teacher);
      tx.commit();
    } catch (Exception e) {
      if (tx != null) {
        tx.rollback();
      }
    } finally {
      session.close();
    }
  }

  public Teacher getTeacherById(int id) {
    Session session = sessionFactory.openSession();
    Transaction tx = null;
    Teacher teacher = null;
    try {
      tx = session.beginTransaction();
      teacher = (Teacher) session.get(Teacher.class, id);
      tx.commit();
    } catch (Exception e) {
      if (tx != null) {
        tx.rollback();
      }
    } finally {
      session.close();
    }
    return teacher;
  }

  public List<Teacher> getAllTeachers() {
    Session session = sessionFactory.openSession();
    Transaction tx = null;
    List<Teacher> teachers = null;
    try {
      tx = session.beginTransaction();
      Query query = session.createQuery("from Teacher");
      teachers = query.list();
      tx.commit();
    } catch (Exception e) {
      if (tx != null) {
        tx.rollback();
      }
    } finally {
      session.close();
    }
    return teachers;
  }
}

7. 创建Action类：在src/main/java目录下创建TeacherAction类，用于处理请求和返回响应。

package com.example.teacher.action;

import java.util.List;
import com.example.teacher.dao.TeacherDAO;
import com.example.teacher.model.Teacher;
import com.opensymphony.xwork2.ActionSupport;

public class TeacherAction extends ActionSupport {
  private static final long serialVersionUID = 1L;
  private Teacher teacher;
  private List<Teacher> teachers;
  private TeacherDAO teacherDAO;

  public TeacherAction() {
    teacherDAO = new TeacherDAO();
  }

  public String addTeacher() {
    teacherDAO.addTeacher(teacher);
    return SUCCESS;
  }

  public String updateTeacher() {
    teacherDAO.updateTeacher(teacher);
    return SUCCESS;
  }

  public String deleteTeacher() {
    teacherDAO.deleteTeacher(teacher.getId());
    return SUCCESS;
  }

  public String getTeacherById() {
    teacher = teacherDAO.getTeacherById(teacher.getId());
    return SUCCESS;
  }

  public String getAllTeachers() {
    teachers = teacherDAO.getAllTeachers();
    return SUCCESS;
  }

  // getter and setter methods
}

8. 创建视图：在WebContent目录下创建JSP文件，用于呈现数据和处理用户交互。

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>教师信息管理系统</title>
</head>
<body>
  <h1>教师信息管理系统</h1>
  <table border="1">
    <tr>
      <th>ID</th>
      <th>姓名</th>
      <th>性别</th>
      <th>年龄</th>
      <th>科目</th>
      <th>操作</th>
    </tr>
    <s:iterator value="teachers">
      <tr>
        <td><s:property value="id"/></td>
        <td><s:property value="name"/></td>
        <td><s:property value="gender"/></td>
        <td><s:property value="age"/></td>
        <td><s:property value="subject"/></td>
        <td>
          <a href="<s:url action='getTeacherById' namespace='/'><s:param name='teacher.id' value='%{id}'/></s:url>">编辑</a>
          <a href="<s:url action='deleteTeacher' namespace='/'><s:param name='teacher.id' value='%{id}'/></s:url>">删除</a>
        </td>
      </tr>
    </s:iterator>
    <tr>
      <td colspan="6"><a href="<s:url action='addTeacher' namespace='/'/>">添加教师</a></td>
    </tr>
  </table>
  <s:if test="teacher != null">
    <h2>编辑教师信息</h2>
    <s:form action="updateTeacher" namespace="/" method="post">
      <s:hidden name="teacher.id" value="%{teacher.id}"/>
      <s:textfield label="姓名" name="teacher.name" value="%{teacher.name}"/>
      <s:textfield label="性别" name="teacher.gender" value="%{teacher.gender}"/>
      <s:textfield label="年龄" name="teacher.age" value="%{teacher.age}"/>
      <s:textfield label="科目" name="teacher.subject" value="%{teacher.subject}"/>
      <s:submit value="保存"/>
    </s:form>
  </s:if>
</body>
</html>

9. 配置Struts2：在src/main/resources目录下创建struts.xml文件，配置Struts2相关信息。

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
"http://struts.apache.org/dtds/struts-2.5.dtd">
<struts>
  <constant name="struts.enable.DynamicMethodInvocation" value="false" />
  <constant name="struts.devMode" value="true" />
  <package name="default" extends="struts-default">
    <action name="getAllTeachers" class="com.example.teacher.action.TeacherAction" method="getAllTeachers">
      <result name="success">/teacher.jsp</result>
    </action>
    <action name="addTeacher" class="com.example.teacher.action.TeacherAction" method="addTeacher">
      <result name="success">/teacher.jsp</result>
    </action>
    <action name="updateTeacher" class="com.example.teacher.action.TeacherAction" method="updateTeacher">
      <result name="success">/teacher.jsp</result>
    </action>
    <action name="deleteTeacher" class="com.example.teacher.action.TeacherAction" method="deleteTeacher">
      <result name="success">/teacher.jsp</result>
    </action>
    <action name="getTeacherById" class="com.example.teacher.action.TeacherAction" method="getTeacherById">
      <result name="success">/teacher.jsp</result>
    </action>
  </package>
</struts>

10. 运行项目：将项目部署到Tomcat服务器上，并访问http://localhost:8080/teacher/getAllTeachers，即可查看教师信息列表。

以上就是基于Struts2+Hibernate5框架实现教师信息管理系统的全部内容，希望对你有所帮助。