各种bug和教训

1++++++++++++++++++++++++++++++

=====正确的

                            if(foundUserInfo != null)//判空
                                userInfo.setUserPassword(foundUserInfo.getUserPassword());//同步时，子系统的密码保持原值
                            addUserInfo(userInfo);
                            addUserColumnInfo(userInfo);
                        }

                        req.setPageCookie(rescenter.getPageCookie());
                    }
                } catch (Exception e) {
                    log.error("", e);
                }

        } catch (Exception e) {
            log.error("", e);
        }

=====有bug的

                            userInfo.setUserPassword(foundUserInfo.getUserPassword());//同步时，子系统的密码保持原值
                            addUserInfo(userInfo);
                            addUserColumnInfo(userInfo);
                        }

                        req.setPageCookie(rescenter.getPageCookie());
                    }
                } catch (RemoteException e) {
                    log.error("", e);
                }

        } catch (ServiceException e) {
            log.error("", e);
        }

 

=====总结

如果是RemoteException 、ServiceException则无法捕获为空的异常，从而待到程序出错，也不知道是哪儿出了错。

另外，变量判空一定要随时注意！！

 

2++++++++++++++++++++++++++++++

对hashMap的迭代.是先迭代key ,再迭代值的
java.util.HashMap a=new java.util.HashMap();
Iterator it= a.keySet().iterator();
while (it.hasNext())
{
Object key=it.next();//在迭代中，绝对不能多次出现it.next()！！！！！！！！！！！！！！！！！！
System.out.println("key:"+key);
System.out.println("value:"+a.get(key));
}