SQLSyntaxError即使使用Prepared Statement

Question

我不斷收到SQL語法錯誤，但我無法理解我在哪裏出錯。任何人都可以將我指向正確的方向嗎？

String sql = "INSERT INTO Weights" 
      + " (ID, W1, W2, W3, W4, W5)" 
      + " VALUES (?, ?, ?, ?, ?, ?)"; 

    PreparedStatement statement = mysqlConnect.connect().prepareStatement(sql); 
    statement.setString(1, String.valueOf(col-1)); 
    statement.setDouble(2, weights[row][c]); 
    statement.setDouble(3, weights[row][c]); 
    statement.setDouble(4, weights[row][c]); 
    statement.setDouble(5, weights[row][c]); 
    statement.setDouble(6, weights[row][c]); 
    statement.execute(sql); 

Answer 1

您的sql語法已關閉，插入語句爲。

INSERT INTO table (col1, col2, ...) VALUES(v1, v2, ...) 

你基本上缺少一個圓括號，改爲以下。

String sql = "INSERT INTO Weights" 
     + "(ID, W1, W2, W3, W4, W5)" 
     + " VALUES (?, ?, ?, ?, ?, ?)";