java.sql.SQLException: Parameter index out of range (2 > number of parameters, which is 0)

问题

public class Brothers extends javax.swing.JFrame {

    /**
     * declaring connection and SQL statement
     */

    Connection cn;
    Statement st;
    PreparedStatement pstmt=null;
    PreparedStatement pst;
    ResultSet rs;
    Object fname, mname, lname, bdate, nation, statusq,InstNo,  photo, combo, place, mimi; 
    int status;



    public Brothers() {        
        dbconnect _db = new dbconnect();

/*//////////////the above is just to show that I have two prepared statement each for each sql statement that i have //////////*/
        try {
            Class.forName("com.mysql.jdbc.Driver");
            //String unicode= "?useUnicode=yes&characterEncoding=UTF-8";
            cn = DriverManager.getConnection(_db.getHost(), _db.getUsername(), _db.getPassword());
            st=cn.createStatement(); 

 try{

        String Sql="INSERT INTO brothers(FirstName, MiddleName, LastName, BirthDate, BirthPlace, Nationality, InstituteNumber, Status, Picture) VALUES(?,?,?,?,?,?,?,?,?)";  
        pstmt=cn.prepareStatement(Sql);
        //pstmt.setString(1,txtTrial.getText());('?','?','?','?','?','?','?','?','?')
        pstmt.setString(2,txtFirtsName.getText());
        pstmt.setString(3,txtMiddleName.getText());
        pstmt.setString(4,txtLastName.getText());
        pstmt.setString(5,((JTextField)chooserBirthDate.getDateEditor().getUiComponent()).getText());
        pstmt.setString(6,txtPlacBirth.getText());

        String nations=combonation.getSelectedItem().toString();
        pstmt.setString(7,nations);
        pstmt.setString(8,txtInstituteNo.getText());


        pstmt.setObject(9,combostatus.getSelectedItem());
        pstmt.setBytes(10, person_image);

      pstmt.executeUpdate(Sql);

        JOptionPane.showMessageDialog(null, "Saving Successfull");

        }

        catch(Exception e){

          //JOptionPane.showMessageDialog(null, e);
          e.printStackTrace(); 
    }

When I try to inset data using the above code it throws an exception:

java.sql.SQLException: Parameter index out of range (10 > number of parameters, which is 9).
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1078)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:989)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:975)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:920)
    at com.mysql.jdbc.PreparedStatement.checkBounds(PreparedStatement.java:3813)
    at com.mysql.jdbc.PreparedStatement.setInternal(PreparedStatement.java:3795)

I have tried to look over it but I cant find the problem please help!!

回答1:

You are starting the insert at position 2 instead 1

 pstmt.setString(2,txtFirtsName.getText());

Change it to

pstmt.setString(1,txtFirtsName.getText());

Do the same for the others where the last one will be

pstmt.setBytes(9, person_image);

回答2:

You only have 9 parameters in your SQL statement.

String Sql="INSERT INTO brothers(FirstName, MiddleName, LastName, BirthDate, BirthPlace, Nationality, InstituteNumber, Status, Picture) VALUES(?,?,?,?,?,?,?,?,?)";

When you commented out the first setString method call, you should have renumbered the parameter indices for the following calls. They should be numbered 1 - 9, not 2 - 10.

回答3:

The number of question marks ? must equal to the parameter.

If you have 7 parameter then there should be 7 question marks in your statement i.e insert into table name values(?,?,?,?,?,?,?)

回答4:

The index of the first parameter should be 1 not 2, the index of the last parameter should be 9 not 10. When assigning N parameters, the index goes from 1 to N.

回答5:

use psmt.executeUpdate(); instead of pstmt.executeUpdate(Sql);

来源：https://stackoverflow.com/questions/16196670/java-sql-sqlexception-parameter-index-out-of-range-2-number-of-parameters-w

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java

sql

exception

sqlexception