添加评论

src/com/hellogithub/dao/UserDao.java

@@ -251,6 +251,22 @@ public class UserDao {
         return num;
     }
 
+    public int selectIdByName(String name )
+    {
+        int num ;
+        userEntity userEntity;
+        try {
+            Connection conn = JdbcUtils.getConnection();
+            QueryRunner runner = new QueryRunner();
+            String sql = "select * from user where userName=? and isValid = 1";
+            userEntity  = runner.query(conn, sql, new BeanHandler<>(userEntity.class),name);
+            num = userEntity.getUserId();
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+
+        return num;
+    }
     public String selectNameById(int id)
     {
         String label;

src/com/hellogithub/dao/commentDao.java

@@ -26,4 +26,18 @@ public class commentDao {
         }
         return commentEntityList;
     }
+    //插入评论
+    public int insertComment(int userid,int projectId,String content,int isUsed,String commentTime,int star){
+        int num ;
+        try {
+            Connection conn = JdbcUtils.getConnection();
+            QueryRunner runner = new QueryRunner();
+            String sql = "INSERT INTO comment (userId,projectId,content,isUsed,commentTime,isValid,star) VALUES (?,?,?,?,?,1,?)";
+            num = runner.update(conn, sql,userid,projectId,content,isUsed,commentTime,star);
+            conn.close();
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+        return num;
+    }
 }

src/com/hellogithub/service/commentService.java

@@ -36,4 +36,9 @@ public class commentService {
         }
         return JSONArray.toJSONString(dataMap2);
     }
+
+    public int insertComment(String username,int projectId,String content,int isUsed,String commentTime,int star){
+        int userid = userDao.selectIdByName(username);
+        return commentDao.insertComment(userid,projectId,content,isUsed,commentTime,star);
+    }
 }

src/com/hellogithub/servlet/commentServlet.java

@@ -0,0 +1,59 @@
+package com.hellogithub.servlet;
+
+import com.hellogithub.entity.userEntity;
+import com.hellogithub.service.commentService;
+import jakarta.servlet.ServletConfig;
+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 java.io.IOException;
+import java.io.PrintWriter;
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+@WebServlet("/comment")
+public class commentServlet extends HttpServlet {
+    private com.hellogithub.service.commentService commentService = new commentService();
+    @Override
+    public void init(ServletConfig config) throws ServletException {
+
+    }
+
+    @Override
+    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        doPost(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");
+        //按照分类检索
+        String proId = req.getParameter("id");
+        String star = req.getParameter("star");
+        String content = req.getParameter("content");
+        String isUsed = req.getParameter("isUsed");
+        DateFormat format = new SimpleDateFormat( "yyyy-MM-dd HH:mm:ss" );
+        Date time = new Date();
+        String now = format.format(time).toString();
+
+        PrintWriter writer = resp.getWriter();
+        HttpSession session  =req.getSession();
+        userEntity userEntity=(userEntity)session.getAttribute("user");
+        String username=userEntity.getUserName();
+        writer.println(commentService.insertComment(username,Integer.parseInt(proId),content,Integer.parseInt(isUsed),now,Integer.parseInt(star)));
+        writer.close();
+    }
+}