java.sql.SQLException: Column count doesn't match value count at row 1

问题

The structure of my table:

id int AUTO_INCREMENT PRIMARY KEY
title text
url text
age int

Here's how I am trying to save data into this table:

PreparedStatement ps=con.prepareStatement("insert into table(title, url, age) values ('\"+title+\",\"+url+\",\"+age+\"')");
System.out.println("Connected database successfully..");
ps.executeUpdate(); 

But when I run the app, I get

java.sql.SQLException: Column count doesn't match value count at row 1

I guess the problem might be in the id column, how to solve it?

回答1:

The problem is not the id column.

From the statement it looks like you have quotes around all columns. Therefore it seems to the SQL, that you have only one column

'"title","url","age"'

What you might want to have is

"insert into table(title, url, age) values ('" + title + "','" + url + "'," + age + ")"

or even better yet, since it is a prepared statement

"insert into table(title, url, age) values (?, ?, ?)"

回答2:

Actually, you have a different problem (you're only passing one "value") -

PreparedStatement ps=con.prepareStatement("insert into table(title, url, age) "
    + "values (?,?,?)");
ps.setString(1, title);
ps.setString(2, url);
ps.setInt(3, age); // <-- at a guess!

You original query put all three values in one string '\"+title+\",\"+url+\",\"+age+\"'.

来源：https://stackoverflow.com/questions/20845977/java-sql-sqlexception-column-count-doesnt-match-value-count-at-row-1