jspblog : delete post

jspblog/src/main/java/com/example/jspblog/domain/board/BoardDao.java

@@ -107,6 +107,7 @@ public class BoardDao {
                             .content(rs.getString("b.content"))
                             .readCount(rs.getInt("b.readCount"))
                             .username(rs.getString("u.username"))
+                            .userId(rs.getInt("b.userId"))
                             .build();
                     return dto;
                 }
@@ -138,4 +139,24 @@ public class BoardDao {
         }
         return -1;
     }
+
+    public int deleteById(int id) {
+        String sql = "delete from board where id=?";
+        Connection conn = DB.getConnection();
+        PreparedStatement pstmt = null;
+
+        if (conn != null) {
+            try {
+                pstmt = conn.prepareStatement(sql);
+                pstmt.setInt(1, id);
+                int result = pstmt.executeUpdate();
+                return result;
+            } catch (Exception e) {
+                e.printStackTrace();
+            } finally {
+                DB.close(conn, pstmt);
+            }
+        }
+        return -1;
+    }
 }

jspblog/src/main/java/com/example/jspblog/domain/board/dto/DeleteReqDto.java

@@ -0,0 +1,8 @@
+package com.example.jspblog.domain.board.dto;
+
+import lombok.Data;
+
+@Data
+public class DeleteReqDto {
+    private int boardId;
+}

jspblog/src/main/java/com/example/jspblog/domain/board/dto/DeleteResDto.java

@@ -0,0 +1,8 @@
+package com.example.jspblog.domain.board.dto;
+
+import lombok.Data;
+
+@Data
+public class DeleteResDto {
+    private String status;
+}

jspblog/src/main/java/com/example/jspblog/domain/board/dto/DetailResDto.java

@@ -11,6 +11,7 @@ public class DetailResDto {
     private String content;
     private int readCount;
     private String username;
+    private int userId;
 
 //    public String getContent() {
 //        return content.replaceAll("&lt;", "<").replaceAll("&gt;", ">");

jspblog/src/main/java/com/example/jspblog/service/BoardService.java

@@ -31,4 +31,8 @@ public class BoardService {
         int result = boardDao.updateReadCount(id);
         return result == 1 ? boardDao.findById(id) : null;
     }
+
+    public int 글삭제(int id) {
+        return boardDao.deleteById(id);
+    }
 }

jspblog/src/main/java/com/example/jspblog/web/BoardController.java

@@ -1,12 +1,15 @@
 package com.example.jspblog.web;
 
 import com.example.jspblog.domain.board.Board;
+import com.example.jspblog.domain.board.dto.DeleteReqDto;
+import com.example.jspblog.domain.board.dto.DeleteResDto;
 import com.example.jspblog.domain.board.dto.DetailResDto;
 import com.example.jspblog.domain.board.dto.WriteReqDto;
 import com.example.jspblog.domain.user.User;
 import com.example.jspblog.service.BoardService;
 import com.example.jspblog.service.UserService;
 import com.example.jspblog.util.Script;
+import com.google.gson.Gson;
 
 import javax.servlet.ServletException;
 import javax.servlet.annotation.WebServlet;
@@ -14,7 +17,9 @@ import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import javax.servlet.http.HttpSession;
+import java.io.BufferedReader;
 import java.io.IOException;
+import java.io.PrintWriter;
 import java.util.List;
 
 @WebServlet("/board")
@@ -79,7 +84,24 @@ public class BoardController extends HttpServlet {
                     request.setAttribute("detail", dto);
                     request.getRequestDispatcher("board/detail.jsp").forward(request, response);
                 }
+            }
+            case "delete" : {
+                BufferedReader br = request.getReader();
+                String data = br.readLine();
+                Gson gson = new Gson();
+                DeleteReqDto dto = gson.fromJson(data, DeleteReqDto.class);
 
+                int result = boardService.글삭제(dto.getBoardId());
+                DeleteResDto resDto = new DeleteResDto();
+                if (result == 1) {
+                    resDto.setStatus("ok");
+                } else {
+                    resDto.setStatus("fail");
+                }
+                String resData = gson.toJson(resDto);
+                PrintWriter out = response.getWriter();
+                out.print(resData);
+                out.flush();
             }
         }
     }

jspblog/src/main/webapp/board/detail.jsp

@@ -3,6 +3,10 @@
 <%@ include file="../layout/header.jsp" %>
 
 <div class="container">
+    <c:if test="${sessionScope.principal.id == detail.userId}">
+        <button onclick="deleteById(${detail.id})" class="btn btn-danger">삭제</button>
+    </c:if>
+
     <br />
     <br />
     <h6 class="m-2">
@@ -67,5 +71,26 @@
         $('#content').append(content[0].data)
     })
 </script>
+<script>
+    function deleteById(boardId) {
+        const data = {
+            boardId : boardId
+        }
+
+        $.ajax({
+            type: "post",
+            url: "/jspblog/board?cmd=delete",
+            data: JSON.stringify(data),
+            contentType: "application/json; charset=utf-8",
+            dataType: "json"
+        }).done(function(result){
+            if (result.status === 'ok') {
+                location.href = "index.jsp";
+            } else {
+                alert("삭제 실패");
+            }
+        });
+    }
+</script>
 </body>
 </html>