Anybody know what's wrong with my code? I am using a simple INSERT statement (as opposed to the regular PreparedStatement because I am trying to utilize mySQL's AES_ENCRYPT/DECRYPT functions. I do not know how to use them with the regular set up of the PreparedStatements. with all the funky question marks.
I keep getting the classic:
com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Cannot add or update a child row: a foreign key constraint fails (
video_game_db
.login
, CONSTRAINTlogin_ibfk_1
FOREIGN KEY (cust_ID
) REFERENCEScustomer
(cust_ID
))
Of course, it's driving me batty.
I spent all night trying to make the regular JDBC implementation of the cipher "stuff" work. In the end, I could only encrypt the strings, but could not decrypt them. I figured it had to do something with mySQL as opposed to JDBC, as before I input them into the database they decrypted fine, but afterwards I could get it to work.
Please take a look at my JDBC table DDL and DML statements below:
DDL
Statement s = conn.createStatement();
s.executeUpdate("CREATE TABLE customer("+"cust_ID CHAR(10) NOT NULL,"+"PRIMARY KEY(cust_ID),"+"first_Name CHAR(30)NOT NULL,mI CHAR(2),last_Name CHAR(50)NOT NULL,street_Name CHAR(50),city CHAR(30) NOT NULL,state CHAR(50) NOT NULL,"
+"zip_Code CHAR(5) NOT NULL, home_Phone CHAR(12) UNIQUE, referrer CHAR(30), quantity INTEGER NOT NULL, item_No CHAR(10))");
s.executeUpdate("CREATE TABLE login ("+"user_Name CHAR(50) NOT NULL,"+"PRIMARY KEY(user_Name),"+"pass_Word CHAR(50)NOT NULL, cust_ID CHAR(10))");
DML
public static void setCustTable(String cust_ID, String lName, String fName, String mI, String street_Name, String city, String state,
String zip_Code, String home_Phone, String referrer, int quantity, String itemNo)throws IOException, SQLException
{
// connect to database
try
{
PreparedStatement stat = conn.prepareStatement("INSERT INTO customer (cust_ID, first_Name, mI, last_Name, street_Name, city, state, zip_Code, home_Phone, referrer, quantity, item_No)"
+ " VALUES (?,?,?,?,?,?,?,?,?,?,?,?)");
stat.setString(1, cust_ID);
stat.setString(2, fName);
stat.setString(3, mI);
stat.setString(4, lName);
stat.setString(5, street_Name);
stat.setString(6, city);
stat.setString(7, state);
stat.setString(8, zip_Code);
stat.setString(9, home_Phone);
stat.setString(10, referrer);
stat.setInt(11, quantity);
stat.setString(12, itemNo);
stat.executeUpdate();
}
catch (SQLException e)
{
e.printStackTrace();
throw e;
}
**********************************************************************************
public static void insertLoginData(String username5, String password5, String custID5)throws IOException, SQLException, NoSuchAlgorithmException, InvalidKeyException
{
Statement s = conn.createStatement();
String insert="INSERT INTO login VALUES('username5', AES_ENCRYPT('text','password5'),'custID5')";
s.executeUpdate(insert);
For what it worth, I don't see any insert into customer
. Error message tells that there is a foreign key constraint from login to customer. So customer entry must exist prior to login insert.
Was there intention to quote 'username5'? I think it is a parameter to method but insert uses literal.
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