添加了可读的注释

src/main/java/com/inks/hb/authinfo/controller/AuthInfoExcelServlet.java

@@ -1,39 +1,49 @@
-// test
 package com.inks.hb.authinfo.controller;
 
-import com.inks.hb.authinfo.pojo.AuthInfo;
+import com.inks.hb.authinfo.pojo.AuthInfo; // 引入AuthInfo实体类
-import com.inks.hb.authinfo.service.AuthService;
+import com.inks.hb.authinfo.service.AuthService; // 引入AuthService接口
-import com.inks.hb.authinfo.service.AuthServiceImpl;
+import com.inks.hb.authinfo.service.AuthServiceImpl; // 引入AuthServiceImpl实现类
-import com.inks.hb.common.ExportExcel;
+import com.inks.hb.common.ExportExcel; // 引入ExportExcel工具类
 
-import javax.servlet.annotation.WebServlet;
+import javax.servlet.annotation.WebServlet; // 引入@WebServlet注解
-import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServlet; // 引入HttpServlet类
-import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletRequest; // 引入HttpServletRequest接口
-import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpServletResponse; // 引入HttpServletResponse接口
-import java.sql.SQLException;
+import java.sql.SQLException; // 引入SQLException异常类
-import java.util.ArrayList;
+import java.util.ArrayList; // 引入ArrayList类
 
+// 使用@WebServlet注解定义Servlet的名称和URL映射
 @WebServlet(name = "AuthInfoExcelServlet", value = "/AuthInfoExcelServlet")
 public class AuthInfoExcelServlet extends HttpServlet {
+    // 重写doPost方法，调用doGet方法
     protected void doPost(HttpServletRequest request, HttpServletResponse response) {
         this.doGet(request, response);
     }
 
+    // 重写doGet方法，处理HTTP GET请求
     protected void doGet(HttpServletRequest request, HttpServletResponse response) {
 
+        // 创建AuthService实例
         AuthService service = new AuthServiceImpl();
 
+        // 声明并初始化AuthInfo列表
         ArrayList<AuthInfo> infoArrayList = null;
         try {
+            // 查询所有AuthInfo并赋值给infoArrayList
             infoArrayList = service.query(1, service.queryAuthInfoNum());
         } catch (SQLException e) {
+            // 捕获并打印SQLException异常
             e.printStackTrace();
         }
 
+        // 定义Excel表头
         String[] headers = {"权限ID", "权限名称", "可读", "可写", "可改", "可删"};
+        // 定义导出的Excel文件名
         String fileName = "权限信息";
 
+        // 创建ExportExcel实例
         ExportExcel<AuthInfo> ee = new ExportExcel<>();
+        // 调用exportExcel方法导出Excel文件
         ee.exportExcel(headers, infoArrayList, fileName, response);
     }
 }

src/main/java/com/inks/hb/authinfo/controller/AuthInfoServlet.java

@@ -16,48 +16,52 @@ import java.sql.SQLException;
 import java.util.ArrayList;
 
 /**
- * 分页查询权限表
+ * 分页查询权限表的Servlet
- * 如查询过程中出现异常，统一返回'数据查询出现异常'
+ * 如果查询过程中出现异常，则统一返回'数据查询出现异常'
- * 返回数据为pojotoGson类型
+ * 返回的数据类型为PojotoGson
  */
 @WebServlet(value = "/AuthInfoServlet", name = "AuthInfoServlet")
 public class AuthInfoServlet extends HttpServlet {
+    // 重写doPost方法，调用doGet方法以处理POST请求
     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException {
         this.doGet(request, response);
     }
 
+    // 重写doGet方法，处理GET请求
     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
-
+        // 设置请求和响应的字符编码
         request.setCharacterEncoding("utf-8");
         response.setContentType("text/html;charset=utf-8");
+        // 获取响应输出流
         PrintWriter out = response.getWriter();
 
+        // 从请求中获取分页参数和操作类型
         int page = Integer.parseInt(request.getParameter("page")); // 当前页码
         int limit = Integer.parseInt(request.getParameter("limit")); // 每页的数据量
-        int make = Integer.parseInt(request.getParameter("make"));
+        int make = Integer.parseInt(request.getParameter("make")); // 操作类型
 
-        // 调用service
+        // 创建AuthService实例
         AuthService service = new AuthServiceImpl();
 
-        // 默认输出信息
+        // 初始化返回信息
-        String code = "0"; //状态码
+        String code = "0"; // 状态码，默认为0表示成功
-        String msg = "数据查询正常"; //状态信息
+        String msg = "数据查询正常"; // 状态信息，默认为正常
-        String count = ""; //数据总数
+        String count = ""; // 数据总数，初始化为空字符串
-        ArrayList<AuthInfo> list = new ArrayList<>(); //数据内容
+        ArrayList<AuthInfo> list = new ArrayList<>(); // 数据内容列表
 
-        //单个全局属性
+        // 声明单个全局属性
         int authId; // 权限ID
         String authItem = ""; // 权限名称
         String isRead; // 可读
         String isWrite; // 可写
         String isChange; // 可改
         String isDelete; // 可删
-        AuthInfo authInfo = null;
+        AuthInfo authInfo = null; // AuthInfo对象
 
         try {
-
+            // 根据操作类型执行不同的逻辑
-            // 状态标志 make 0重载 1新增 2修改 3搜索 4删除
             if (make == 2) {
+                // 修改权限信息
                 authId = Integer.parseInt(request.getParameter("authId"));
                 authItem = request.getParameter("authItem");
                 isRead = request.getParameter("isRead");
@@ -65,38 +69,33 @@ public class AuthInfoServlet extends HttpServlet {
                 isChange = request.getParameter("isChange");
                 isDelete = request.getParameter("isDelete");
                 authInfo = new AuthInfo(authId, authItem, isRead, isWrite, isChange, isDelete);
+                service.updateAuthInfo(authInfo); // 更新权限信息
             } else if (make == 3) {
+                // 搜索权限信息
                 authItem = request.getParameter("authItem");
+                authInfo = service.query(authItem); // 查询权限信息
+                list.clear(); // 清空列表
+                list.add(authInfo); // 添加查询结果到列表
             }
 
-            switch (make) {
+            // 根据操作类型获取数据
-                case 2:
-                    service.updateAuthInfo(authInfo);
-                    break;
-                case 3:
-                    authInfo = service.query(authItem);
-                    list.clear();
-                    list.add(authInfo);
-                    break;
-            }
             if (make != 3) {
-                list = service.query(page, limit);
+                list = service.query(page, limit); // 分页查询权限信息
-                count = String.valueOf(service.queryAuthInfoNum());
+                count = String.valueOf(service.queryAuthInfoNum()); // 获取权限信息总数
             } else {
-                if (authInfo.getAuthId() == 0) {
+                // 如果搜索结果为空，则设置count为0，否则为1
-                    count = "0";
+                count = (authInfo.getAuthId() == 0) ? "0" : "1";
-                } else {
-                    count = "1";
-                }
             }
         } catch (SQLException e) {
+            // 捕获到SQLException异常，设置错误状态码和信息
             code = "1";
             msg = "数据查询出现异常";
-            e.printStackTrace();
+            e.printStackTrace(); // 打印异常堆栈信息
         } finally {
+            // 创建PojotoGson对象并序列化为JSON字符串
             PojotoGson pojotoGson = new PojotoGson(code, msg, count, list);
             Gson gson = new Gson();
-            out.print(gson.toJson(pojotoGson));
+            out.print(gson.toJson(pojotoGson)); // 输出JSON字符串
         }
     }
 }

src/main/java/com/inks/hb/authinfo/dao/AuthInfoDao.java

@@ -10,48 +10,58 @@ import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.util.ArrayList;
 
+// 实现CommonDao接口，提供AuthInfo数据访问对象
 public class AuthInfoDao implements CommonDao {
 
+    // 插入AuthInfo数据到数据库
     @Override
     public void insertData(Object o) throws SQLException {
-        AuthInfo authInfo = (AuthInfo) o;
+        AuthInfo authInfo = (AuthInfo) o; // 将Object对象转换为AuthInfo对象
 
-        Connection conn = DBUtil.getConnection();
+        Connection conn = DBUtil.getConnection(); // 获取数据库连接
 
+        // SQL插入语句
         String sql = "insert into authInfo (authItem, isRead, isWrite, isChange, isDelete) values (?,?,?,?,?)";
         PreparedStatement pstmt = conn.prepareStatement(sql);
+        // 设置SQL语句中的参数
         pstmt.setString(1, authInfo.getAuthItem());
         pstmt.setString(2, authInfo.getIsRead());
         pstmt.setString(3, authInfo.getIsWrite());
         pstmt.setString(4, authInfo.getIsChange());
         pstmt.setString(5, authInfo.getIsDelete());
 
-        pstmt.executeUpdate();
+        pstmt.executeUpdate(); // 执行插入操作
-        pstmt.close();
+        pstmt.close(); // 关闭PreparedStatement
     }
 
+    // 删除AuthInfo数据
     @Override
     public void deleteData(Object o) throws SQLException {
-        AuthInfo authInfo = (AuthInfo) o;
+        AuthInfo authInfo = (AuthInfo) o; // 将Object对象转换为AuthInfo对象
 
-        Connection conn = DBUtil.getConnection();
+        Connection conn = DBUtil.getConnection(); // 获取数据库连接
 
+        // SQL删除语句
         String sql = "DELETE FROM authInfo WHERE authId = ?";
         PreparedStatement pstmt = conn.prepareStatement(sql);
+        // 设置SQL语句中的参数
         pstmt.setInt(1, authInfo.getAuthId());
 
-        pstmt.executeUpdate();
+        pstmt.executeUpdate(); // 执行删除操作
-        pstmt.close();
+        pstmt.close(); // 关闭PreparedStatement
     }
 
+    // 更新AuthInfo数据
     @Override
     public void updateData(Object o) throws SQLException {
-        AuthInfo authInfo = (AuthInfo) o;
+        AuthInfo authInfo = (AuthInfo) o; // 将Object对象转换为AuthInfo对象
 
-        Connection conn = DBUtil.getConnection();
+        Connection conn = DBUtil.getConnection(); // 获取数据库连接
 
+        // SQL更新语句
         String sql = "UPDATE authInfo SET authItem = ? ,isRead = ?,isWrite = ?,isChange = ?,isDelete = ? WHERE authId = ?";
         PreparedStatement pstmt = conn.prepareStatement(sql);
+        // 设置SQL语句中的参数
         pstmt.setString(1, authInfo.getAuthItem());
         pstmt.setString(2, authInfo.getIsRead());
         pstmt.setString(3, authInfo.getIsWrite());
@@ -59,53 +69,59 @@ public class AuthInfoDao implements CommonDao {
         pstmt.setString(5, authInfo.getIsDelete());
         pstmt.setInt(6, authInfo.getAuthId());
 
-        pstmt.executeUpdate();
+        pstmt.executeUpdate(); // 执行更新操作
-        pstmt.close();
+        pstmt.close(); // 关闭PreparedStatement
     }
 
+    // 查询AuthInfo数据总数
     @Override
     public int queryDataNum() throws SQLException {
+        Connection conn = DBUtil.getConnection(); // 获取数据库连接
 
-        Connection conn = DBUtil.getConnection();
+        // SQL查询总数语句
-
         String sql = "select count(*) from authInfo;";
         PreparedStatement pstmt = conn.prepareStatement(sql);
-        ResultSet rs = pstmt.executeQuery();
+        ResultSet rs = pstmt.executeQuery(); // 执行查询操作
 
         int num;
-        if (rs.next()) num = rs.getInt("count(*)");
+        if (rs.next()) {
-        else num = 0;
+            num = rs.getInt("count(*)"); // 获取总数
+        } else {
+            num = 0; // 如果没有数据，总数为0
+        }
 
-        rs.close();
+        rs.close(); // 关闭ResultSet
-        pstmt.close();
+        pstmt.close(); // 关闭PreparedStatement
 
-        return num;
+        return num; // 返回数据总数
     }
 
+    // 分页查询AuthInfo数据
     @Override
     public ArrayList<AuthInfo> query(int start, int length) throws SQLException {
+        Connection conn = DBUtil.getConnection(); // 获取数据库连接
 
-        Connection conn = DBUtil.getConnection();
+        // SQL分页查询语句
-
         String sql = "select * from authInfo limit ?, ?;";
         PreparedStatement pstmt = conn.prepareStatement(sql);
+        // 设置分页参数
         pstmt.setInt(1, start - 1);
         pstmt.setInt(2, length);
-        ResultSet rs = pstmt.executeQuery();
+        ResultSet rs = pstmt.executeQuery(); // 执行查询操作
 
-        ArrayList<AuthInfo> list = new ArrayList<>();
+        ArrayList<AuthInfo> list = new ArrayList<>(); // 创建AuthInfo列表
         AuthInfo authInfo;
 
-        while (rs.next()) {
+        while (rs.next()) { // 遍历结果集
-            authInfo = new AuthInfo(rs.getInt(1), rs.getString(2), rs.getString(3)
+            // 创建AuthInfo对象并添加到列表
-                    , rs.getString(4), rs.getString(5), rs.getString(6));
+            authInfo = new AuthInfo(rs.getInt(1), rs.getString(2), rs.getString(3), rs.getString(4), rs.getString(5), rs.getString(6));
             list.add(authInfo);
         }
 
-        rs.close();
+        rs.close(); // 关闭ResultSet
-        pstmt.close();
+        pstmt.close(); // 关闭PreparedStatement
 
-        return list;
+        return list; // 返回AuthInfo列表
     }
 
     @Override