我有一个加载持久对象的方法然后更新它。当我使用flush（）时，进程挂起而没有错误。有什么想法吗？
代码：
public Task changeStatus(Long taskNo, String status) {
Session sess = HibernateUtil
.getSessionFactory()
.openSession();
Task task = (Task) sess.load(Task.class, taskNo);
task.setStatus(status);
sess.flush();
return task;
}
日志显示：
INFO：09：33：05,329 DEBUG打印机：83 - 列出实体：
INFO：09：33：05,329 DEBUG Printer：90 - models.Task {userByAssignedToCheck = null，client = models.Client＃1，status = Withdrawn，datasets =，urgent = false，taskLogs =，userByCheckedBy = null，dateReceived = 2013年8月29日，dateCompleted = null，fee = null，onTime = false，userByOriginatorId = models.User＃1，taskCat = null，userByAssignedToWork = null，source = null，originatorOld = null，description = null，userByCompletedBy = null，method = null，taskNo = 11492，dueDate = null，requestVia = null，comments =}
INFO：09：33：05,329 DEBUG AbstractBatcher：366 - 即将打开PreparedStatement（打开PreparedStatements：0，全局：0）
INFO：09：33：05,329 DEBUG SQL：401 - / * update models.Task * / update DBAKZHU0.INFO_TASK set CLIENTNO =？，ASSIGNEDTOCHECK =？，TASKTYPENO =？，COMPLETEDBY = ?, CHECKEDBY = ?, ORIGINATORID = ？，SOURCENO =？，ASSIGNEDTOWORK = ?, METHOD = ?, REQUESTVIA = ?, DATERECEIVED = ?, DATECOMPLETED = ?, DUEDATE =？，STATUS = ?, ORIGINATOROLD = ?, ONTIME = ?, URGENT =？，FEE = ?, DESCRIPTION =？ TASKNO =？
INFO：Hibernate：/ * update models.Task * / update DBAKZHU0.INFO_TASK set CLIENTNO =？，ASSIGNEDTOCHECK = ?, TASKTYPENO =？，COMPLETEDBY = ?, CHECKEDBY = ?, ORIGINATORID = ?, SOURCENO =？，ASSIGNEDTOWORK = ？，METHOD = ?, REQUESTVIA = ?, DATERECEIVED = ?, DATECOMPLETED = ?, DUEDATE = ?, STATUS = ?, ORIGINATOROLD = ?, ONTIME = ?, URGENT = ?, FEE = ?, DESCRIPTION =？ TASKNO =？