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package servlet.admin;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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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 java.sql.Connection;
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import javabean.Base;
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import javabean.Util;
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/**
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* Servlet 实现类，用于处理管理员删除操作
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*
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* 该 Servlet 处理管理员删除请求，根据管理员的 ID 删除对应的记录。
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*/
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@WebServlet("/admin/managerDel")
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public class ManagerDel extends HttpServlet {
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/**
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* 处理 GET 请求，删除指定 ID 的管理员
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*
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* 该方法会接收管理员的 ID，删除数据库中对应的管理员记录，并返回删除结果。
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*
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* @param req 请求对象
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* @param resp 响应对象
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* @throws ServletException 如果发生 Servlet 错误
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* @throws IOException 如果发生 I/O 错误
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*/
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@Override
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protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
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// 设置响应内容类型为 JSON
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resp.setContentType("application/json; charset=utf8");
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// 获取请求中的 ID 参数
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String id = req.getParameter("id");
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// SQL 语句及数据库连接准备
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String sql = "";
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Connection connection = null;
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PreparedStatement pstmt = null;
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ResultSet resultSet = null;
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int result = 0;
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// 返回的响应数据
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int code = 1;
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String msg = "";
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PrintWriter out = resp.getWriter();
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try {
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// 获取数据库连接
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connection = (Connection) Base.getConnection();
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// SQL 删除语句
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sql = "delete from manager where id=?";
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pstmt = connection.prepareStatement(sql);
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pstmt.setString(1, id); // 设置 ID 参数
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result = pstmt.executeUpdate(); // 执行删除操作
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// 根据操作结果返回响应
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if (result == 1) {
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code = 0;
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msg = "删除成功";
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} else {
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msg = "删除失败";
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}
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} catch (ClassNotFoundException e) {
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msg = "class not found";
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} catch (SQLException e) {
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msg = "sql错误";
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} finally {
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// 关闭数据库资源
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try {
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Base.closeResource(connection, pstmt, resultSet);
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} catch (SQLException e) {
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e.printStackTrace();
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}
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}
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// 返回 JSON 格式的响应
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out.print(Util.jsonResponse(code, msg, null));
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}
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}
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