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我有一个包含 n 行的文件。我需要在其中搜索一个字段（SessionId 及其值）并打印其相应的值。

我已经编码以访问文件并逐行打印。在获取字段并打印其值时需要帮助。

文件示例行：

LastSessionTeardown.cc|598|Resolving:=N2BBSessionGateway.Factory
2013-12-23 06:03:22.488046 UTC VZ_QIP_S3_208 LastSessionTeardown.cc|636 <ERROR>:Failed     to resolve SessionGateway:N2BBSessionGateway.Factory
Cause : user exception, ID 'IDL:omg.org/CosNaming/NamingContext/NotFound:1.0'
2013-12-23 06:03:22.488078 UTC VZ_QIP_S3_208 LastSessionTeardown.cc|640|Total resolved     SessionGateways list(size):=0
2013-12-23 06:03:22.488098 UTC VZ_QIP_S3_208 LastSessionTeardown.cc|642|Out     resolveSGWs::
2013-12-23 06:07:17.485959 UTC VZ_QIP_S3_208 StreamServiceMasterImpl.cc|989|In     createStream::=77D23ECC4649571A367E9C314C4AA7AA
2013-12-23 06:07:17.487706 UTC VZ_QIP_S3_208 StreamServiceMasterImpl.cc|1036|StreamId:     77D23ECC4649571A367E9C314C4AA7AA  **SessionId: C0A800F0DB2A::1387778933::1501** ContentId: vault22_12.mpg 1xGoid: 
2013-12-23 06:07:17.505233 UTC VZ_QIP_S3_208 StreamServiceMasterImpl.cc|989|In     createStream::=E30CC868325B51D288A8E2D95322B840

注意：该文件在指定字段的上方和下方有很多行

代码：

require "java"

include_class "java.io.BufferedReader"
include_class "java.io.FileReader"
include_class "java.lang.String"

fileReader = FileReader.new "protocoltiming.log.txt"

bufferReader = BufferedReader.new fileReader
str = bufferReader.readLine

while str
puts str.to_s
str = bufferReader.readLine
 end

请帮助我添加到此代码中的内容？

4

2 回答 2

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while str
  str = bufferReader.readLine
  session_id = str.strip.scan(/SessionId: (.+)\s/)[0][0] if str.include?("SessionId: ")
  if session_id
    # session_id found
  else
    # session_id not found
  end
end

实际上没有必要循环遍历这些行。您可以只阅读文件并使用正则表达式来查找所需的文本。但无论什么适合你的猫。如果文件太大，有时读取整个文件可能会非常有问题。

高温高压

于 2014-03-19T07:25:13.720 回答
0

完毕。这行得通！

require "java"

include_class "java.io.BufferedReader"
include_class "java.io.FileReader"
include_class "java.lang.String"

fileReader = FileReader.new "StreamService.log"

bufferReader = BufferedReader.new fileReader

#puts str
str = bufferReader.readLine

while str = bufferReader.readLine
#puts str.to_s

sessionid = ""

  sessionid = str.match(/SessionId:(.*)ContentId/)

  if sessionid.to_s != ''
    puts "Session ID = #{sessionid[1]}"
  end

end
于 2014-03-20T09:49:43.537 回答