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【标 题】：项目中的异常处理2
【关键字】：
【来 源】：http://blog.csdn.net/xuxiheng/archive/2006/11/13/1382196.aspx
项目中的异常处理2
功能：通过seqno查找记录，可能为空，所以要判断。在try块中抛出的异常可以由catch块抓取。
/**
* 根據seqno查詢臨時表的待審核記錄
*
* @param seqno
* 序號
* @param locale
* String
* @return List
* @throws BusiException
*/
public List qryBySeqno(long seqno, String locale) throws BusiException {
ArrayList al = null;
if (LOG.isDebugEnabled()) {
LOG.debug("[AccountYmService]"
+ "[FUNCTION:qryAccountYmData][Param seqno:" + seqno
+ "][begin]");
}
EntityManager mgr = initiate();
AccountYmTempDao ayTempDao = AccountYmTempDao.getInstance(mgr);
EntityTransaction tx = null;
try {
AccountYmVO accountYmVO;
tx = mgr.beginTransaction();
List list;
try {
list = ayTempDao.selectBySeqno(seqno);
} catch (DbAccessException e) {
LOG.error("[FUNCTION:qryBySeqno()]" + "[DbAccessException]", e);
tx.rollback();
throw new BusiException(
ExceptionConstant.DATABASE_ACCESS_EXCEPTION, "",
locale, ExceptionConstant.INFO_TYPE);
}
if (list != null && list.size() > 0) {
if (LOG.isDebugEnabled()) {
LOG.debug("[FUNCTION:qryBySeqno()]"
+ "select list success!");
}
al = new ArrayList();
AccountYmTemp accountYmTemp;
for (int i = 0; i < list.size(); i++) {
accountYmVO = new AccountYmVO();
accountYmTemp = (AccountYmTemp) list.get(i);
BeanUtils.copyProperties(accountYmVO, accountYmTemp);
BeanUtils
.copyProperties(accountYmVO, accountYmTemp.getId());
al.add(accountYmVO);
}
} else {
throw new BusiException(
ExceptionConstant.NOT_FOUND_SEQNO_IN_TEMP, "", locale,
ExceptionConstant.INFO_TYPE);
}
tx.commit();
} catch (InvocationTargetException e) {
LOG.error(
"[FUNCTION:qryBySeqno()]" + "[InvocationTargetException]",
e);
tx.rollback();
throw new BusiException(
ExceptionConstant.INVOCATION_TARGET_EXCEPTION, "", locale,
ExceptionConstant.INFO_TYPE);
} catch (IllegalAccessException e) {
LOG
.error("[FUNCTION:qryBySeqno()]"
+ "[IllegalAccessException]", e);
tx.rollback();
throw new BusiException(ExceptionConstant.ILLEGAL_ACCESS_EXCEPTION,
"", locale, ExceptionConstant.INFO_TYPE);
} catch (BusiException e) {
throw e;
}
return al;
}
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