Error with Mysql insert with JDBC

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Error with Mysql insert with JDBC

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#1 by (1 votes)

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I'm running this code:

/*
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package br.com.caelum.jdbc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class TestaInsercao {

    public static void main(String[] args) throws SQLException {

        Connection connection = DataBase.getConnection();
        String nome = "Notebook";
        String descricao = "Notebook core i5";
        String sql = "insert into produto (nome, descricao) values (?,?)";

        PreparedStatement comando = connection.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS);
        comando.setString(1, nome);
        comando.setString(2, descricao);

        boolean resultado = comando.execute();
        System.out.println(resultado);

        ResultSet resultSet = comando.getGeneratedKeys();
        while (resultSet.next()) {

            String id = resultSet.getString("id");
            System.out.println("Chave gerado: " + id);

        }

        resultSet.close();
        comando.close();
        connection.close();
    }
}

And I'm getting the following SQLException at line comando.getString("id") :

run: false Exception in thread "main" java.sql.SQLException: Column 'id' not found. at com.mysql.jdbc.SQLError.createSQLException (SQLError.java:1074) at com.mysql.jdbc.SQLError.createSQLException (SQLError.java:988) at com.mysql.jdbc.SQLError.createSQLException (SQLError.java:974) at com.mysql.jdbc.SQLError.createSQLException (SQLError.java:919) at com.mysql.jdbc.ResultSetImpl.findColumn (ResultSetImpl.java:1167) at com.mysql.jdbc.ResultSetImpl.getString (ResultSetImpl.java:5733) at br.caelum.jdbc.TestaInsercao.main (TestaInsercao.java:33) C: \ Users \ bahia \ AppData \ Local \ NetBeans \ Cache \ 8.2 \ executor-snippets \ run.xml: 53: Java returned: 1 CONSTRUCTION FAIL (total time: 0 seconds)

I know that elá is saying that it is not finding the id column, but it exists, and when I go to the Mysql Workbench and make a select in my table, it shows that the product was added, even showing false and giving exception in java

mysql java jdbc

asked by anonymous 12.04.2017 / 21:20

1 answer

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score 1 · Accepted Answer

Is your ID an even% of% same?

If it is auto increment, test this code at the location of your ResultSet and your While:

try (ResultSet resultSet = comando.getGeneratedKeys()) {
  if (resultSet.next()) {
    long id = resultSet.getLong(1);
    System.out.println("Chave gerado: " + id);
  }else {
    throw new SQLException("Creating user failed, no ID obtained.");
  }
}