无法在Java中执行SQL存储过程

Question

I have a stored procedure in SQL which can run in SQL without problems. But when I use Java to call it, the code can run but stored procedure cannot be called. Here's my code:

public int countPV(int value){
    Connection conn = null;
    ResultSet rs = null;

    try {
        conn = MyConection.getConnection();
        CallableStatement cstmt = conn.prepareCall("{call countPV(?)}");
        cstmt.setInt(1, value);
    } catch (Exception e) {
        e.printStackTrace();
        return 0;
    }finally{
        try {

            MyConection.closeConnection(conn, null, rs);
        } catch (Exception e) {
        }
    }
    return 1;

}

And here is my stored procedure in SQL:

CREATE procedure countPV (@pID int)
as
begin
WHILE (2>1)
BEGIN
    update tblUser
    set countx = countx + 1
    where ID = @pID
    SET @pID = (select parentID from tblUser where ID = @pID)
    if(@pID = (select parentID from tblUser where ID = @pID))
    break;
END
end

Answer 1

You need to call CallableStatement#execute() in your method.

CallableStatement cstmt = conn.prepareCall("{call countPV(?)}");
cstmt.setInt(1, value);

cstmt.execute(); // MISSING!

Answer 2

https://docs.oracle.com/javase/7/docs/api/java/sql/CallableStatement.html

Since CallableStatemnt is extending PreparedStatement,it inherited it's executing methods (execute, executeQuery, executeUpdate) to be executed like normal quires.

I Would like to recommend using setQueryTimeout for any stored procedure calls to avoid timeout issues.