Question

我正在研究大学招聘系统，我已将德比数据库连接到我的Netbeans Java项目，我正在尝试将Student对象添加到数据库中的Student表中。这是我的功能使用（它与工作人员合作，但对象有固定信息而不是输入）..

public static boolean addStudent(Student s) {
    String connectionURL = "jdbc:derby://localhost:1527/University";
    try {
        Connection conn = DriverManager.getConnection(connectionURL, "BUE", "BUE");
        Statement st = conn.createStatement();
        String sql = "INSERT INTO STUDENT VALUES (" +  s.getFirstName()+ "," + "'" + s.getLastName()+ "'" + "," + "'" +  s.getCountry()+"'"  + "," +"'" +  s.getEmail()+ "'" + "," + "'" + s.getBirthYear() + "'" + "," + "'"+  s.getStudentUsername() + "'" +"," +  s.getStudentPassword() +")";
        System.out.println("@@@");            
        st.executeUpdate(sql);
        st.close();
        return true;
    } catch (Exception ex) {
        System.out.println(ex.getMessage());
        return false;
    }
}

这是创建对象和调用addStudent（）函数的范围..

Student newAccount= new Student( firstNameTextField2.getText(), lastNameTextField.getText(), EmailTextField.getText(),  countryTextField.getText(), birthYearTextField.getText(), usernameTextField.getText(), passText);
        Student.addStudent(newAccount);

在运行和创建新帐户时（插入时），它给了我这个错误..

Column 'E' is either not in any table in the FROM list or appears within a join specification and is outside the scope of the join specification or appears in a HAVING clause and is not in the GROUP BY list. If this is a CREATE or ALTER TABLE  statement then 'E' is not a column in the target table.

列不在FROM列表中的任何表中

0 个答案: