管理员登录

src/com/hellogithub/dao/AdminDao.java

@@ -1,4 +1,57 @@
 package com.hellogithub.dao;
 
+import com.hellogithub.entity.adminEntity;
+import com.hellogithub.entity.userEntity;
+import com.hellogithub.utils.JdbcUtils;
+import org.apache.commons.dbutils.QueryRunner;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
 public class AdminDao {
+    public static adminEntity AdminLogin(String adminName, String password,String loginTime) {
+        ResultSet resultSet = null;
+        PreparedStatement preparedStatement = null;
+        Connection connection = null;
+        try {
+            connection = JdbcUtils.getConnection();
+            String loginSql = "select  * from  admin where adminName=? and adminPassword=? and isValid=1;";
+            preparedStatement = connection.prepareStatement(loginSql);
+            preparedStatement.setString(1, adminName);
+            preparedStatement.setString(2, password);
+            resultSet = preparedStatement.executeQuery();
+            if (!resultSet.next()) {  // 查询不到用户数据
+                return null;
+            }
+            // 将db中数据 返回给客户端 查询到数据
+            Integer id = resultSet.getInt(1);
+            String dbAdminName = resultSet.getString(2);
+            String dbAdminPassword = resultSet.getString(3);
+            adminEntity adminEntity1 = new adminEntity(dbAdminName, dbAdminPassword);
+            return adminEntity1;
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        } finally {
+            JdbcUtils.closeConnection(resultSet, preparedStatement, connection);
+        }
+    }
+
+    public int  updateAdminLoginTime(String name){
+        String label="";
+        int num;
+        try {
+            Connection conn = JdbcUtils.getConnection();
+            QueryRunner runner = new QueryRunner();
+            String sql="UPDATE user SET searchHistory = ? WHERE userName= ? and isValid = 1";
+            num = runner.update(conn,sql,label,name);
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+
+        return num;
+    }
+
 }

src/com/hellogithub/entity/adminEntity.java

@@ -5,4 +5,10 @@ public class adminEntity {
     String adminName;
     String adminPassword;
     int isValid;
+
+    public adminEntity(String adminName, String adminPassword) {
+        this.adminName = adminName;
+        this.adminPassword = adminPassword;
+    }
+
 }

src/com/hellogithub/service/AdminService.java

@@ -1,4 +1,14 @@
 package com.hellogithub.service;
 
+import com.hellogithub.dao.AdminDao;
+import com.hellogithub.entity.adminEntity;
+import com.hellogithub.entity.userEntity;
+
 public class AdminService {
+    AdminDao adminDao=new AdminDao();
+
+    public adminEntity adminLogin(String userName, String password,String loginTime){
+        return AdminDao.AdminLogin(userName,password,loginTime);
+    }
+
 }

src/com/hellogithub/servlet/systemAdmin/AdminLoginServlet.java

@@ -0,0 +1,103 @@
+package com.hellogithub.servlet.systemAdmin;
+
+import com.alibaba.fastjson.JSONObject;
+import com.hellogithub.entity.adminEntity;
+import com.hellogithub.entity.userEntity;
+import com.hellogithub.service.AdminService;
+import com.hellogithub.utils.RandomValidateCode;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.annotation.WebServlet;
+import jakarta.servlet.http.HttpServlet;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import jakarta.servlet.http.HttpSession;
+import org.apache.commons.lang3.StringUtils;
+
+import javax.servlet.http.Cookie;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.HashMap;
+
+@WebServlet("/adminLogin")
+public class AdminLoginServlet extends HttpServlet {
+    AdminService adminService=new AdminService();
+    @Override
+    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        doGet(req, resp);
+    }
+
+    @Override
+    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        resp.setCharacterEncoding("UTF-8");
+        resp.setContentType("text/html; charset=utf-8");
+        //        设置响应头允许ajax跨域访问
+        String curOrigin = req.getHeader("Origin");
+        resp.setHeader("Access-Control-Allow-Origin", curOrigin == null ? "true" : curOrigin);
+        resp.setHeader("Access-Control-Allow-Credentials", "true");
+        resp.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE, HEAD");
+        resp.setHeader("Access-Control-Max-Age", "3600");
+        resp.setHeader("Access-Control-Allow-Headers", "access-control-allow-origin, authority, content-type, version-info, X-Requested-With");
+        resp.setContentType("application/json;charset=UTF-8");
+
+
+        PrintWriter writer = resp.getWriter();
+        String adminName = req.getParameter("adminname");
+        if (StringUtils.isEmpty(adminName)) {
+            setResultError("用户名不能够是为空！", writer);
+            return;
+        }
+
+        String adminPwd = req.getParameter("password");
+        // 参数验证
+        if (StringUtils.isEmpty(adminPwd)) {
+            //转发到错误页面
+            setResultError("密码不能够是为空！", writer);
+            return;
+        }
+
+        String loginTime=req.getParameter("loginTime");
+        if (StringUtils.isEmpty(loginTime)){
+            //转发到错误页面
+            setResultError("登陆时间不能够是为空！", writer);
+            return;
+        }
+
+        // 从session中获取图形验证码
+        HttpSession session = req.getSession();
+
+        // 在调用业务逻辑层
+        adminEntity adminEntity = adminService.adminLogin(adminName, adminPwd,loginTime);
+        if (adminEntity == null) {
+            // 用户名称或者密码错误!
+            setResultError("用户名或者密码错误！！！", writer);
+            return;
+        }
+
+        // 能够db中查询到对象 登录成功了  将管理员数据存放在session中
+        session = req.getSession();
+        session.setAttribute("admin", adminEntity);
+        setResultOK("登录成功！", writer);
+    }
+
+    @Override
+    protected void doDelete(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        super.doDelete(req, resp);
+    }
+
+    public void setResult(Integer code, String msg, PrintWriter writer) {
+        HashMap<String, Object> result = new HashMap<>();
+        result.put("code", code);
+        result.put("msg", msg);
+        String jsonString = JSONObject.toJSONString(result);
+        writer.println(jsonString);
+        writer.close();
+    }
+
+    public void setResultError(String msg, PrintWriter writer) {
+        setResult(500, msg, writer);
+    }
+
+    public void setResultOK(String msg, PrintWriter writer) {
+        setResult(200, msg, writer);
+    }
+}