解析特定条目的日志文件行

Posted 2023-04-18

【中文标题】解析特定条目的日志文件行

【英文标题】：Parsing Lines of Log File for Specific Entries

【发布时间】：2013-06-04 19:00:14

【问题描述】：

我在日志文件中有以下行（有很多行，而且不是所有相同类型的日志条目）

5/9/2013 3:01:38 PM|Xml Sent to Engine <catalog><book id=\"bk101\"><author>Gambardella, Matthew</author><title>XML Developer's Guide</title><genre>Computer</genre><price>44.95</price><publish_date>2000-10-01</publish_date><description>An in-depth look at creating applications with XML.</description></book><book id=\"bk102\"><author>Ralls, Kim</author><title>Midnight Rain</title><genre>Fantasy</genre><price>5.95</price><publish_date>2000-12-16</publish_date><description>A former architect battles corporate zombies, an evil sorceress, and her own childhood to become queen of the world.</description></book><book id=\"bk103\"><author>Corets, Eva</author><title>Maeve Ascendant</title><genre>Fantasy</genre><price>5.95</price><publish_date>2000-11-17</publish_date><description>After the collapse of a nanotechnology society in England, the young survivors lay the foundation for a new society.</description></book><book id=\"bk104\"><author>Corets, Eva</author><title>Oberon's Legacy</title><genre>Fantasy</genre><price>5.95</price><publish_date>2001-03-10</publish_date><description>In post-apocalypse England, the mysterious agent known only as Oberon helps to create a new life for the inhabitants of London. Sequel to Maeve Ascendant.</description></book><book id=\"bk105\"><author>Corets, Eva</author><title>The Sundered Grail</title><genre>Fantasy</genre><price>5.95</price><publish_date>2001-09-10</publish_date><description>The two daughters of Maeve, half-sisters, battle one another for control of England. Sequel to Oberon's Legacy.</description></book><book id=\"bk106\"><author>Randall, Cynthia</author><title>Lover Birds</title><genre>Romance</genre><price>4.95</price><publish_date>2000-09-02</publish_date><description>When Carla meets Paul at an ornithology conference, tempers fly as feathers get ruffled.</description></book><book id=\"bk107\"><author>Thurman, Paula</author><title>Splish Splash</title><genre>Romance</genre><price>4.95</price><publish_date>2000-11-02</publish_date><description>A deep sea diver finds true love twenty thousand leagues beneath the sea.</description></book><book id=\"bk108\"><author>Knorr, Stefan</author><title>Creepy Crawlies</title><genre>Horror</genre><price>4.95</price><publish_date>2000-12-06</publish_date><description>An anthology of horror stories about roaches,centipedes, scorpions  and other insects.</description></book><book id=\"bk109\"><author>Kress, Peter</author><title>Paradox Lost</title><genre>Science Fiction</genre><price>6.95</price><publish_date>2000-11-02</publish_date><description>After an inadvertant trip through a HeisenbergUncertainty Device, James Salway discovers the problems of being quantum.</description></book><book id=\"bk110\"><author>O'Brien, Tim</author><title>Microsoft .NET: The Programming Bible</title><genre>Computer</genre><price>36.95</price><publish_date>2000-12-09</publish_date><description>Microsoft's .NET initiative is explored in detail in this deep programmer's reference.</description></book><book id=\"bk111\"><author>O'Brien, Tim</author><title>MSXML3: A Comprehensive Guide</title><genre>Computer</genre><price>36.95</price><publish_date>2000-12-01</publish_date><description>The Microsoft MSXML3 parser is covered in detail, with attention to XML DOM interfaces, XSLT processing, SAX and more.</description></book><book id=\"bk112\"><author>Galos, Mike</author><title>Visual Studio 7: A Comprehensive Guide</title><genre>Computer</genre><price>49.95</price><publish_date>2001-04-16</publish_date><description>Microsoft Visual Studio 7 is explored in depth,looking at how Visual Basic, Visual C++, C#, and ASP+ are integrated into a comprehensive development environment.</description></book></catalog>

我能依赖的是“标签” “Xml 发送到引擎”

我正在尝试获取正确的 C#/RegEx

1.  Identity the correct line via the tag.
and
2.  Get the xml at the end of the line.

我试过了，但无法弄清楚正则表达式的语法。

string line = string.Empty;

line = "5/9/2013 3:01:38 PM|Xml Sent to Engine <catalog><book id=\"bk101\"><author>Gambardella, Matthew</author><title>XML Developer's Guide</title><genre>Computer</genre><price>44.95</price><publish_date>2000-10-01</publish_date><description>An in-depth look at creating applications with XML.</description></book><book id=\"bk102\"><author>Ralls, Kim</author><title>Midnight Rain</title><genre>Fantasy</genre><price>5.95</price><publish_date>2000-12-16</publish_date><description>A former architect battles corporate zombies, an evil sorceress, and her own childhood to become queen of the world.</description></book><book id=\"bk103\"><author>Corets, Eva</author><title>Maeve Ascendant</title><genre>Fantasy</genre><price>5.95</price><publish_date>2000-11-17</publish_date><description>After the collapse of a nanotechnology society in England, the young survivors lay the foundation for a new society.</description></book><book id=\"bk104\"><author>Corets, Eva</author><title>Oberon's Legacy</title><genre>Fantasy</genre><price>5.95</price><publish_date>2001-03-10</publish_date><description>In post-apocalypse England, the mysterious agent known only as Oberon helps to create a new life for the inhabitants of London. Sequel to Maeve Ascendant.</description></book><book id=\"bk105\"><author>Corets, Eva</author><title>The Sundered Grail</title><genre>Fantasy</genre><price>5.95</price><publish_date>2001-09-10</publish_date><description>The two daughters of Maeve, half-sisters, battle one another for control of England. Sequel to Oberon's Legacy.</description></book><book id=\"bk106\"><author>Randall, Cynthia</author><title>Lover Birds</title><genre>Romance</genre><price>4.95</price><publish_date>2000-09-02</publish_date><description>When Carla meets Paul at an ornithology conference, tempers fly as feathers get ruffled.</description></book><book id=\"bk107\"><author>Thurman, Paula</author><title>Splish Splash</title><genre>Romance</genre><price>4.95</price><publish_date>2000-11-02</publish_date><description>A deep sea diver finds true love twenty thousand leagues beneath the sea.</description></book><book id=\"bk108\"><author>Knorr, Stefan</author><title>Creepy Crawlies</title><genre>Horror</genre><price>4.95</price><publish_date>2000-12-06</publish_date><description>An anthology of horror stories about roaches,centipedes, scorpions  and other insects.</description></book><book id=\"bk109\"><author>Kress, Peter</author><title>Paradox Lost</title><genre>Science Fiction</genre><price>6.95</price><publish_date>2000-11-02</publish_date><description>After an inadvertant trip through a HeisenbergUncertainty Device, James Salway discovers the problems of being quantum.</description></book><book id=\"bk110\"><author>O'Brien, Tim</author><title>Microsoft .NET: The Programming Bible</title><genre>Computer</genre><price>36.95</price><publish_date>2000-12-09</publish_date><description>Microsoft's .NET initiative is explored in detail in this deep programmer's reference.</description></book><book id=\"bk111\"><author>O'Brien, Tim</author><title>MSXML3: A Comprehensive Guide</title><genre>Computer</genre><price>36.95</price><publish_date>2000-12-01</publish_date><description>The Microsoft MSXML3 parser is covered in detail, with attention to XML DOM interfaces, XSLT processing, SAX and more.</description></book><book id=\"bk112\"><author>Galos, Mike</author><title>Visual Studio 7: A Comprehensive Guide</title><genre>Computer</genre><price>49.95</price><publish_date>2001-04-16</publish_date><description>Microsoft Visual Studio 7 is explored in depth,looking at how Visual Basic, Visual C++, C#, and ASP+ are integrated into a comprehensive development environment.</description></book></catalog>";


            string regExPattern = @"";
            regExPattern = @"(?<tag>\bXml Sent to Engine\b)(?<sep1>\b \b)(?<xmlFragment>^<catalog>.*)";

            //try to macth the line using regular expressions
            Match parsed = Regex.Match(line, regExPattern);
            if (parsed.Success || true==true)
            

                for (int i = 0; i < parsed.Groups.Count; i++)
                
                    string abc = parsed.Groups[i].Value;
                    System.Console.WriteLine(abc);

                

                string xmlFragment = string.Empty;
                if (null != parsed.Groups["xmlFragment"])
                
                    xmlFragment = parsed.Groups["xmlFragment"].Value;
                



            

编辑：

我正在使用什么 .. 来自 Joel 的回复：

regExPattern = @"(?<tag>\bProcess Xml Sent to XCEProducer.cProducer\b)(?<xmlFragment>\s+(.*)$)";

【问题讨论】：

我无法显示“line =”代码，有什么帮助吗？

true==true 永远是真的..你不需要那个

是的，我知道 true==true，这是进入块代码的临时工作。

谁否决了我的问题？哎呀。我解释了我的问题并给出了我的尝试代码。

【参考方案1】：

如果 XML 是该标记之后该行中唯一剩下的东西，那么就这样做

regExPattern = @"(?<tag>\bXml Sent to Engine\b)\s+(.*)$"

【讨论】：

是的，xml 是唯一剩下的东西。让我检查一下并报告。谢谢。

好吧...你让我克服了困难。谢谢。我标记为“答案”。