Question

当我这样做时

conn = PGconn.connect("localhost", 5432, "" , "", db_name, postgres_username, postgres_password)

并且密码不正确，抛出异常（PG :: ConnectionBad）（这是我的期望）

begin
  conn = PGconn.connect("localhost", 5432, "" , "", db_name, postgres_username, postgres_password)
  # Do some stuff
rescue PG::ConnectionBad => e
  puts e
  raise # reraise exception
rescue Exception => e
  puts e
  raise # reraise exception
ensure
  conn.close if conn
end

当我做“put e”时，我得到了

FATAL:  password authentication failed for user "something@something.com"
FATAL:  password authentication failed for user "something@something.com"

即，重复失败消息。

我正在使用

x86_64-pc-linux-gnu上的PostgreSQL 9.6.3，由gcc编译（Ubuntu 5.4.0-6ubuntu1~16.04.4）5.4.0 20160609,64位

ruby 2.4.1p111（2017-03-22修订版58053）[x86_64-linux]

Ubuntu 16.04

这是一个错误吗？这是预期的吗？

Answer 1

以下是一个黑客，并没有找到问题的根源。它只是解决了问题的症状。

“回答”故意冗长。

begin
  conn = PGconn.connect("localhost", 5432, "" , "", db_name, postgres_username, postgres_password)
  # Do some stuff
rescue PG::ConnectionBad => e
  # There seems to be a bug in PG::ConnectionBad where the error message is doubled.  Get only a single error message
  puts e
  theDoubledMsg = e.to_s
  theSingleMsg = theDoubledMsg.split("\n")[0]
  # See https://stackoverflow.com/questions/2823748/how-do-i-add-information-to-an-exception-message-in-ruby
  raise $!, theSingleMsg, $!.backtrace
rescue Exception => e
  puts e
  raise # reraise exception
ensure
  conn.close if conn
end

PGconn.connect异常重复两次错误消息

1 个答案: