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package servlet.manager;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.sql.SQLException;
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import java.util.HashMap;
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import javax.servlet.ServletException;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import javax.servlet.http.HttpSession;
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import javabean.Manager;
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import net.sf.json.JSONObject;
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@WebServlet("/managerLogin") // 定义Servlet的URL映射
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public class ManagerLogin extends HttpServlet {
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protected void doGet(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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response.getWriter().append("Served at: ").append(request.getContextPath()); // 处理GET请求，返回简单的响应
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}
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protected void doPost(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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// 设置响应内容类型和字符编码
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response.setContentType("application/json; charset=utf8");
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PrintWriter out = response.getWriter(); // 获取输出流
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// 从请求中获取用户名和密码参数
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String user = request.getParameter("user");
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String psw = request.getParameter("psw");
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// 创建一个HashMap来存储响应数据
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HashMap<String, Object> hashMap = new HashMap<String, Object>();
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Manager manager = new Manager(); // 创建Manager对象
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String result = null; // 用于存储登录结果
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try {
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result = manager.login(user, psw); // 调用Manager对象的login方法进行登录验证
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} catch (ClassNotFoundException | SQLException e) {
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e.printStackTrace(); // 捕获并打印异常信息
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}
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if (result.equals("1")) { // 如果登录成功
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HttpSession session = request.getSession(); // 获取当前会话
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session.setAttribute("manager", user); // 在会话中存储用户名
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session.setAttribute("manager_first", "1"); // 标记为首次登录
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hashMap.put("code", 0); // 设置响应码为0表示成功
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hashMap.put("msg", "登录成功"); // 设置响应消息为登录成功
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hashMap.put("url", request.getContextPath() + "/manager/01nav.jsp"); // 设置跳转URL
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} else { // 如果登录失败
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hashMap.put("code", 1); // 设置响应码为1表示失败
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hashMap.put("msg", result); // 设置响应消息为错误信息
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}
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// 将HashMap转换为JSON对象并写入响应
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JSONObject json = JSONObject.fromObject(hashMap);
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out.write(json.toString());
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}
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}
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