ADD file via upload

code/DynamicDaoImpl.java

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+package com.dao;
+import java.util.*;
+
+import java.util.Date;
+import java.sql.*;
+import com.domain.Dynamic;
+
+public class DynamicDaoImpl implements DynamicDao {
+    
+    // 随机检索学生方法
+//	public PostCheck findDyid(int Dyid) throws DaoException{
+//		String sql="SELECT Dyid,Uid,Uname,Rtime,Content"+"FROM Dynamic WHERE id=?";
+//		PostCheck postcheck = new PostCheck();
+//		try(
+//			Connection conn=getConnection();
+//			PreparedStatement pstmt=conn.prepareStatement(sql)){
+//			pstmt.setInt(1, Dyid);
+//			try(ResultSet rst=pstmt.executeQuery()){
+//				if(rst.next()) {
+//					postcheck.setDyid(rst.getInt("Dyid"));
+//					postcheck.setUid(rst.getString("Uid"));
+//					postcheck.setUname(rst.getString("Uname"));
+//					postcheck.setRtime(rst.getDate("Rtime"));
+//					postcheck.setContent(rst.getString("Content"));
+//				}
+//			}
+//		}catch(SQLException se) {
+//			return null;
+//		}
+//		return postcheck;
+//	}
+    
+
+	@Override
+	public List<Dynamic> listDynamic() throws SQLException {
+		// TODO Auto-generated method stub
+		Dynamic Dynamic = new Dynamic();
+		
+		Connection conn = getConnection(); 
+		List<Dynamic> list = new ArrayList<Dynamic>(); 
+	  	String sql = "SELECT * FROM Dynamic"; 
+	  	  try (
+	  	  	PreparedStatement pstmt = conn.prepareStatement(sql);
+	  	    ResultSet rs = pstmt.executeQuery()){
+	  	    System.out.println(rs+"test1");
+	  	   while(rs.next()){
+//	  	       int Dyid = rs.getInt("Dyid");
+//	  	       String Uid = rs.getString(2);
+//	  	       String Uname = rs.getString(3);
+//	  	       Date Rtime = rs.getDate(4);
+//	  	       String Content = rs.getString(5);
+//	  	       PostCheck s = new PostCheck();
+//	  	       s.setDyid(Dyid);
+//	  	       s.setUid(Uid);
+//	  	       s.setUname(Uname);
+//	  	       s.setRtime(Rtime);
+//	  	       s.setContent(Content);
+//	  	       System.out.println(list+"test2");//
+//	  	       list.add(s);
+	  		 Dynamic.setDyid(rs.getInt("Dyid")); 
+	  		Dynamic.setUid(rs.getString("Uid"));
+	  		Dynamic.setUname(rs.getString("Uname"));
+	  		Dynamic.setRtime(rs.getDate("Rtime"));
+	  		Dynamic.setContent(rs.getString("Content"));
+	  		Dynamic.setDpicture(rs.getBytes("Dpicture"));
+	  		Dynamic.setMid(rs.getString("Mid"));
+	  		Dynamic.setFavour(rs.getInt("Favour"));
+				list.add(Dynamic);
+	  	     }
+	  	 System.out.println(list+"test2");
+	  	     return list;
+	  	     
+	  	  }catch(SQLException e){
+	  	   	System.out.println(e);
+	  	   		return null;
+	  	  }
+	}
+	@Override
+	// 删除动态
+	public int removeDynamic(int Dyid) throws SQLException {
+		// TODO Auto-generated method stub
+		Connection conn = getConnection();
+	    	String sql = "DELETE FROM Dynamic WHERE Dyid=?";  
+	      	try {
+	      
+	      	 	PreparedStatement pstmt = conn.prepareStatement(sql);
+	      	    pstmt.setInt(1, Dyid);
+	      	    return pstmt.executeUpdate();
+	      	}catch(SQLException sqle){
+	      	   	System.out.println(sqle);
+	      	 	return 0;
+	      	} 
+	}
+	
+}
+	
+
+
+
+