系统概述

基于Java Web技术栈构建的医院信息管理系统，采用JSP页面展示与Servlet业务逻辑处理相结合的方式。系统整合了JDBC数据库连接、MySQL数据存储以及HTML前端界面，实现了完整的医院业务管理功能。

技术环境要求

• Java版本：不低于8.0
• MySQL数据库：不低于5.7版本
• 应用服务器：Tomcat 8及以上
• 开发工具：Eclipse、IntelliJ IDEA或其他兼容IDE

核心功能模块

系统提供多层次用户访问控制，包括普通用户与管理员角色。主要功能涵盖：

• 用户账户管理（注册、登录、权限验证）
• 科室信息维护（增删改查）
• 病房资源配置管理
• 患者档案管理
• 医疗人员分类管理
• 手术流程跟踪管理

关键代码实现

以下是患者信息处理的核心代码片段：

public class PatientManagementServlet extends HttpServlet {
    protected void processAddPatient(HttpServletRequest req, HttpServletResponse resp) 
            throws ServletException, IOException {
        resp.setContentType("text/html;charset=utf-8");
        
        String patientId = req.getParameter("patientId");
        String patientName = req.getParameter("patientName");
        String gender = req.getParameter("gender");
        int age = Integer.parseInt(req.getParameter("age"));
        String roomNumber = req.getParameter("roomNumber");
        
        int result = new PatientService().addPatientRecord(patientId, patientName, gender, age, roomNumber);
        String message;
        
        PrintWriter writer = resp.getWriter();
        if (result == 1) {
            message = "患者 " + patientName + " 信息录入成功！";
        } else {
            message = "错误：患者信息录入失败！";
        }
        
        writer.write("<div class='notification'>");
        writer.write("<div>" + message + "</div>");
        writer.write("</div>");
        writer.flush();
        writer.close();
    }
    
    protected void processDeletePatient(HttpServletRequest req, HttpServletResponse resp) 
            throws ServletException, IOException {
        resp.setContentType("text/html;charset=utf-8");
        String patientId = req.getParameter("patientId");
        
        int result = new PatientService().removePatient(patientId);
        String message;
        PrintWriter writer = resp.getWriter();
        
        if (result == 1) {
            message = "成功移除患者ID为 " + patientId + " 的记录！";
        } else {
            message = "错误：患者删除操作失败！";
        }
        
        writer.write("<div class='notification'>");
        writer.write("<div>" + message + "</div>");
        writer.write("</div>");
        writer.flush();
        writer.close();
    }
}

手术记录管理模块代码示例：

public class SurgeryManagementServlet extends HttpServlet {
    // 删除手术记录
    protected void processSurgeryRemoval(HttpServletRequest req, HttpServletResponse resp) 
            throws ServletException, IOException {
        resp.setContentType("text/html;charset=utf-8");
        String patientId = req.getParameter("patientId");
        String doctorId = req.getParameter("doctorId");
        
        int operationResult = new SurgeryService().removeSurgeryRecord(patientId, doctorId);
        String statusMessage;
        PrintWriter output = resp.getWriter();
        
        if (operationResult == 1) {
            statusMessage = "成功删除患者 " + patientId + " 的医生 " + doctorId + " 手术信息！";
        } else {
            statusMessage = "错误：手术记录删除失败！";
        }
        
        output.write("<div class='notification'>");
        output.write("<div>" + statusMessage + "</div>");
        output.write("</div>");
        output.flush();
        output.close();
    }
    
    // 更新手术记录
    protected void processSurgeryUpdate(HttpServletRequest req, HttpServletResponse resp) 
            throws ServletException, IOException {
        resp.setContentType("text/html;charset=utf-8");
        String patientId = req.getParameter("patientId");
        String surgeryId = req.getParameter("surgeryId");
        String updatedTime = req.getParameter("updatedTime");
        
        int updateStatus = new SurgeryService().modifySurgeryRecord(patientId, surgeryId, updatedTime);
        String notification;
        PrintWriter writer = resp.getWriter();
        
        if (updateStatus == 1) {
            notification = "患者 " + patientId + " 手术ID " + surgeryId + " 记录更新成功！";
        } else {
            notification = "错误：手术记录更新失败！";
        }
        
        writer.write("<div class='notification'>");
        writer.write("<div>" + notification + "</div>");
        writer.write("</div>");
        writer.flush();
        writer.close();
    }
}

病房资源管理相关代码：

protected void processRoomUpdate(HttpServletRequest req, HttpServletResponse resp) 
        throws ServletException, IOException {
    resp.setContentType("text/html;charset=utf-8");
    String roomId = req.getParameter("roomId");
    String newRoomId = req.getParameter("newRoomId");
    String roomName = req.getParameter("roomName");
    String departmentName = req.getParameter("departmentName");
    String departmentId = req.getParameter("departmentId");
    
    int result = new RoomService().updateRoomInfo(roomId, newRoomId, roomName, departmentName, departmentId);
    String message;
    PrintWriter output = resp.getWriter();
    
    if (result == 1) {
        message = "病房 " + roomId + " 信息更新成功！";
    } else {
        message = "错误：病房信息更新失败！";
    }
    
    output.write("<div class='notification'>");
    output.write("<div>" + message + "</div>");
    output.write("</div>");
    output.flush();
    output.close();
}

// 查询全部患者信息
protected void fetchAllPatients(HttpServletRequest req, HttpServletResponse resp) 
        throws ServletException, IOException {
    resp.setContentType("text/html;charset=utf-8");
    ArrayList<PatientEntity> patientList = new PatientService().fetchAllPatients();
    PrintWriter output = resp.getWriter();
    
    if (patientList != null) {
        output.write("<div class='patient-list'>");
        output.write("<div><span>患者编号</span><span>姓名</span><span>性别</span><span>年龄</span><span>所在病房</span></div>");
        for (PatientEntity patient : patientList) {
            output.write("<div>");
            output.write("<span>" + patient.getId() + "</span>");
            output.write("<span>" + patient.getName() + "</span>");
            output.write("<span>" + patient.getGender() + "</span>");
            output.write("<span>" + patient.getAge() + "</span>");
            output.write("<span>" + patient.getRoomName() + "</span>");
            output.write("</div>");
        }
        output.write("</div>");
    }
    output.flush();
    output.close();
}

身份验证与权限控制代码：

public class AuthenticationServlet extends HttpServlet {
    protected void handleLoginRequest(HttpServletRequest req, HttpServletResponse resp) 
            throws ServletException, IOException {
        req.setCharacterEncoding("utf-8");
        String userName = req.getParameter("username");
        String passWord = req.getParameter("password");
        String accessLevel = null;
        
        UserService userService = new UserService();
        UserAccount account = userService.authenticateUser(userName, passWord);
        
        if (account != null) {
            accessLevel = account.getAccessLevel();
            
            if (accessLevel.equals("普通用户")) {
                req.getSession().setAttribute("currentUser", account);
                req.getRequestDispatcher("patient_portal.jsp").forward(req, resp);
            } else {
                req.getSession().setAttribute("administrator", account);
                req.getRequestDispatcher("admin_dashboard.jsp").forward(req, resp);
            }
        } else {
            req.setAttribute("errorMessage", "错误：用户名或密码不正确！");
            req.getRequestDispatcher("error_page.jsp").forward(req, resp);
        }
    }
}

系统架构特点

该医院管理系统采用了分层架构设计，通过DAO模式实现数据访问与业务逻辑分离。前端使用JSP技术动态生成HTML内容，后端通过Servlet处理HTTP请求并返回响应。数据库采用MySQL进行持久化存储，通过JDBC驱动建立连接。