Hi all and thanks for your precedent help.
I've try the setOperator() method :
First I use this code :
QueryParser qp = new QueryParser("content", analyzer);
qp.setOperator(QueryParser.DEFAULT_OPERATOR_AND);
query = qp.parse(queryString, "contents", analyzer);
But it does not work (Or is always use in the query).
Then, I look the QueryParser and we could use another parse() method:
That's my second code :
QueryParser qp = new QueryParser("content", analyzer);
qp.setOperator(QueryParser.DEFAULT_OPERATOR_AND);
query = qp.parse(queryString);
And this work good :-) (And is now use by default)
Hui : I think this could solve your problem.
S�bastien