如何编写事务？？？

Question

try
{ conn.setAutoCommit(false);
prepstmt = conn.prepareStatement("insert into table(a,b) values(?,?)");
conn.commit();
conn.setAutoCommit(true);
}catch{
}

Answer 1

少打了
try{ conn.setAutoCommit(false);
prepstmt = conn.prepareStatement("insert into table(a,b) values(?,?)");
conn.commit();
conn.setAutoCommit(true);
}catch{
                           conn.rollback();
}

Answer 2

在catch里写conn.rollback();就可以了