Java SQL更新語法錯誤

Question

我在我的服務器上有一個「更新」功能，我通過客戶端上的「btnUpdateActionPerformed」調用它。

Error1: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE patient_id = 3' at line 1 

以下是更新的代碼：

我兩個表，即「患者」和「保險」，但是當我運行它，顯示在服務器端下面的錯誤進行更新

public String update(int patient_id, String first_name ,String last_name, String date_of_birth, String gender, String address, int contact_number, 
     String occupation, String nic_number, String marital_status, String r_first_name, String r_last_name, String r_occupation, int r_contact_number, 
     int room_number,int doctor_id_assigned,int nurse_id_assigned,int company_id,String company_name,String company_address, 
     int phone_number, String policy_group) throws RemoteException{ 
     try{ 
      Class.forName("com.mysql.jdbc.Driver"); 
      con= DriverManager.getConnection("jdbc:mysql://localhost/hospital","root",""); 
      String patient_sql = "UPDATE patient SET first_name = ?, last_name = ?, date_of_birth = ?, gender = ?, address = ?, contact_number = ?," 
        + " occupation = ?, nic_number = ?, marital_status = ?, r_first_name = ?, r_last_name = ?, r_occupation = ?, r_contact_number = ?, " 
        + "room_number = ?, doctor_id_assigned = ?, nurse_id_assigned = ?, company_id = ?, WHERE patient_id = ?"; 
      ps=con.prepareStatement(patient_sql); 
      ps.setString(1, first_name); 
      ps.setString(2, last_name); 
      ps.setString(3, date_of_birth); 
      ps.setString(4, gender); 
      ps.setString(5, address); 
      ps.setInt(6, contact_number); 
      ps.setString(7, occupation); 
      ps.setString(8, nic_number); 
      ps.setString(9, marital_status); 
      ps.setString(10, r_first_name); 
      ps.setString(11, r_last_name); 
      ps.setString(12, r_occupation); 
      ps.setInt(13, r_contact_number); 
      ps.setInt(14, room_number); 
      ps.setInt(15, doctor_id_assigned); 
      ps.setInt(16, nurse_id_assigned); 
      ps.setInt(17, company_id); 
      ps.setInt(18, patient_id); 
      ps.executeUpdate(); 

      String insurance_sql = "UPDATE insurance SET company_name = ?, company_address = ?, phone_number = ?, policy_group = ? WHERE company_id = ?"; 
      ps=con.prepareStatement(insurance_sql); 
      ps.setString(1, company_name); 
      ps.setString(2, company_address); 
      ps.setInt(3, phone_number); 
      ps.setString(4, policy_group); 
      ps.setInt(5, company_id); 
      ps.executeUpdate(); 

      con.close(); 
     } 
     catch(SQLException e){ 
      System.out.println("Error1: "+e); 
     } 
     catch(ClassNotFoundException e){ 
      System.out.println("Error2: "+e); 
     } 
     return "updated"; 
} 

爲btnUpdateActionPerformed的代碼：

private void btnUpdateActionPerformed(java.awt.event.ActionEvent evt){           
    try{ 
     Registry reg = LocateRegistry.getRegistry("localhost",5022); 
     ClerkInterface ci = (ClerkInterface)reg.lookup("clerk"); 
     int patient_id = Integer.parseInt(txtPatientId.getText()); 
     String first_name = txtFirstName.getText(); 
     String last_name = txtLastName.getText(); 
     String date_of_birth = txtDateOfBirth.getText(); 
     String gender=""; 
     if(radMale.isSelected()){ 
      gender = "Male"; 
     } 
     else if(radFemale.isSelected()){ 
      gender = "Female"; 
     } 
     String address = txtAddress.getText(); 
     int contact_number = Integer.parseInt(txtContactNumber.getText()); 
     String occupation = txtOccupation.getText(); 
     String nic_number = txtNICNumber.getText(); 
     String marital_status = txtNICNumber.getText(); 
     String r_first_name = txtRFirstName.getText(); 
     String r_last_name = txtRLastName.getText(); 
     String r_occupation = txtROccupation.getText(); 
     int r_contact_number = Integer.parseInt(txtRContactNumber.getText()); 
     int room_number = Integer.parseInt(txtRoomNumber.getText()); 
     int doctor_id_assigned = Integer.parseInt(txtDoctorIdAssigned.getText()); 
     int nurse_id_assigned = Integer.parseInt(txtNurseIdAssigned.getText()); 
     int company_id = Integer.parseInt(txtCompanyId.getText()); 
     String company_name = txtCompanyName.getText(); 
     String company_address = txtCompanyAddress.getText(); 
     int phone_number = Integer.parseInt(txtCompanyPhoneNumber.getText()); 
     String policy_group = txtPolicyGroup.getText(); 

     ci.update(patient_id, first_name, last_name, date_of_birth, gender, address, contact_number, occupation, nic_number, marital_status, 
       r_first_name, r_last_name, r_occupation, r_contact_number, room_number, doctor_id_assigned, nurse_id_assigned, company_id, 
       company_name, company_address, phone_number, policy_group); 

     JOptionPane.showMessageDialog(null,"Patient updated"); 
    } 
    catch(RemoteException e){System.out.println("Error: "+e.getMessage());} 
    catch(NotBoundException e){System.out.println("Error: "+e.getMessage());} 
}  

Answer 1

後company_id = ?,