插入错误

Question

我正在尝试插入postgresql db date，但是当我插入它时，我收到了这个错误：

  

INSERTING操作时发生错误：org.postgresql.util.PSQLException：错误：列“我写的文字”不存在“

我不明白我的编码错误是什么，程序试图在值中找到列？

但是当我尝试输出这个表时，它输出没有错误

WORKERDAO课程

public static void insertWrk(String name, String post) throws SQLException, ClassNotFoundException {
        //Declare a INSTERT statement
        String updateStmt ="INSERT INTO worker(full_name,post)" +
                        "VALUES" +
                        "("+name+","+post+");";
    //Execute INSTERT operation
    try {
        DBUtil.dbExecuteUpdate(updateStmt);
    } catch (SQLException e) {
        System.out.print("Error occurred while INSTERING Operation: " + e);
        throw e;
    }
}

DBUTIL类

 public static void dbExecuteUpdate(String sqlStmt) throws SQLException, ClassNotFoundException {
    //Declare statement as null
    Statement stmt = null;
    try {
        //Connect to DB
        dbConnect();
        //Create Statement
        stmt = conn.createStatement();
        //Run executeUpdate operation with given sql statement
        stmt.executeUpdate(sqlStmt);
    } catch (SQLException e) {
        System.out.println("Проблема в выполнение executeUpdate операции : " + e);
        throw e;
    } finally {
        if (stmt != null) {
            //Close statement
            stmt.close();
        }
        //Close connection
        dbDisconnect();
    }
}

WorkerController类

    @FXML
private void insertWorker (ActionEvent actionEvent) throws SQLException, ClassNotFoundException {
        try {
            WorkerDAO.insertWrk(nameText.getText(),postCombo.getSelectionModel().getSelectedItem());
        } catch (SQLException e) {
            System.out.println("Problem occurred while inserting worker " + e);
            throw e;
        }
    }

Answer 1

您需要在您要插入的数据周围加上引号：

String updateStmt ="INSERT INTO worker(full_name,post)" +
                        "VALUES" +
                        "("+name+","+post+");";

应该是：

String updateStmt ="INSERT INTO worker(full_name,post)" +
                        "VALUES" +
                        "('"+name+"',"'+post+'");";

请注意，您使用此方法冒SQL Injection attacks冒险，请参阅使用parameterised insert。 This site列出了更多细节。