解析特定的java文本文件

我有adb的logcat文件。文件如下所示：

  09-03 17:12:04.562   479   957 I ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity } from pid 1230
09-03 17:12:04.687   479  1030 I ActivityManager: Start proc com.amazon.mShop.android for activity com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity: pid=19164 uid=10158 gids={1006, 3003}
09-03 17:12:05.593   479   912 I ActivityManager: Starting: Intent { dat=?paramSuggestionText=cell%20phone flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 17:12:05.796   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity: +186ms (total +1s119ms)
09-03 17:12:08.601   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity: +3s925ms
09-03 17:12:08.601   479   620 I ActivityManager: Resumed Activity: com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity totalTime: 4037 ms
09-03 17:13:35.742   479   957 I ActivityManager: Starting: Intent { act=intentActionStartActivity flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.categoryBrowse.CategoryBrowseActivity } from pid 19164
09-03 17:13:36.007   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.categoryBrowse.CategoryBrowseActivity: +222ms
09-03 17:13:53.328   479   957 I ActivityManager: Starting: Intent { dat=?&paramSuggestionFilters=s%3An%3A%2C%3A4991425011%0As%3An%3A%2C%3A4991426011%0As%3An%3A%2C%3A5088769011%0As%3An%3A%2C%3A5263615011&paramDepartmentName=Programs flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 17:13:53.484   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity: +145ms
09-03 17:14:54.585   479   484 I ActivityManager: Starting: Intent { cmp=com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity } from pid 19164
09-03 17:14:54.718   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity: +102ms
09-03 17:15:30.210   479   957 I ActivityManager: Starting: Intent { flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 18:03:02.140   479   967 I ActivityManager: Starting: Intent { act=intentActionStartActivity flg=0x4000000 cmp=com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity } from pid 19164
09-03 18:03:08.054   479  1005 I ActivityManager: Starting: Intent { dat= flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 18:03:08.171   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity: +105ms
09-03 18:04:24.937   479   967 I ActivityManager: Starting: Intent { cmp=com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity } from pid 19164
09-03 18:04:25.046   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity: +92ms
09-03 18:05:00.554   479  5949 I ActivityManager: Starting: Intent { flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 18:06:43.781   479  1019 I ActivityManager: Starting: Intent { act=intentActionStartActivity flg=0x4000000 cmp=com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity } from pid 19164
09-03 18:07:12.984   479  1001 I ActivityManager: Starting: Intent { dat= flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 18:07:13.140   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity: +135ms
09-03 18:08:29.890   479  5949 I ActivityManager: Starting: Intent { cmp=com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity } from pid 19164
09-03 18:08:29.976   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity: +81ms
09-03 18:09:05.515   479   961 I ActivityManager: Starting: Intent { flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 18:18:42.132   479  1039 I ActivityManager: Starting: Intent { act=intentActionStartActivity flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.categoryBrowse.CategoryBrowseActivity } from pid 19164
09-03 18:18:42.359   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.categoryBrowse.CategoryBrowseActivity: +144ms
09-03 18:19:09.890   479  1030 I ActivityManager: Starting: Intent { act=intentActionStartActivity flg=0x4000000 cmp=com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity } from pid 19164
09-03 18:19:17.406   479   485 I ActivityManager: Starting: Intent { dat= flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 18:19:17.515   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity: +97ms
09-03 18:20:58.500   479  5949 I ActivityManager: Starting: Intent { flg=0x20000 cmp=com.amazon.mShop.android/.search.image.SnapItActivity } from pid 19164
09-03 18:20:58.546   479   967 I ActivityManager: Starting: Intent { cmp=com.amazon.mShop.android/.search.image.SnapItPhotoCaptureActivity } from pid 19164
09-03 18:20:58.898   479   620 I ActivityManager: Displayed com.amazon.mShop.android/.search.image.SnapItPhotoCaptureActivity: +340ms (total +387ms)
09-03 18:21:26.156   479  1039 I ActivityManager: Starting: Intent { cmp=com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity } from pid 19164
09-03 18:21:26.359   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity: +185ms
09-03 18:21:42.750   479   957 W ActivityManager: Duplicate finish request for HistoryRecord{408f9da0 com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity}
09-03 18:26:05.968   479   963 I ActivityManager: Starting: Intent { act=intentActionStartActivity flg=0x4000000 cmp=com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity } from pid 19164
09-03 18:27:53.515   479   957 I ActivityManager: Starting: Intent { flg=0x10000000 cmp=com.amazon.mShop.android/com.amazon.mobileads.mraid.MraidBrowser (has extras) } from pid 19164
09-03 18:27:54.750   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mobileads.mraid.MraidBrowser: +1s218ms
09-03 18:29:12.726   479   484 I ActivityManager: Starting: Intent { act=intentActionStartActivity flg=0x4000000 cmp=com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity (has extras) } from pid 19164
09-03 18:29:15.609   479  1039 I ActivityManager: Starting: Intent { flg=0x10000000 cmp=com.amazon.mShop.android/com.amazon.mobileads.mraid.MraidBrowser (has extras) } from pid 19164
09-03 18:29:16.882   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mobileads.mraid.MraidBrowser: +1s261ms
09-03 18:32:41.750   479   967 I ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity } from pid 1230

现在我想从文件中提取活动名称。它将从与此类似的每一行中提取

09-03 18:29:15.609   479  1039 I ActivityManager: Starting: Intent { flg=0x10000000 cmp=com.amazon.mShop.android/com.amazon.mobileads.mraid.MraidBrowser (has extras) } from pid 19164

或

从这一行开始，我只需要字符串com.amazon.mobileads.mraid.MraidBrowser 线路的其他部分需要拆除。应删除不包含start:Intent或ActivityManager:recovered Activity:的行

最后我会有一系列的字符串，比如

com.amazon.mobileads.mraid.MraidBrowser

com.amazon.mShop.search.SearchActivity

等等，这取决于他们的行号

---

我怎样才能做到这一点？我可以使用字符串标记器，但这是一个冗长而低效的过程，我认为正则表达式匹配或类似的方法会更好。

我知道我的方法可能一点也不可爱，但它是有效的。这将是一个解决方案：

String filePath = "res/textfile.txt";
String line;
List<String> myL = new ArrayList<String>();

try {
    BufferedReader read = new BufferedReader(new FileReader(filePath)); 
    while((line = read.readLine()) != null) {
        if(line.contains("Resumed Activity") || line.contains("Starting: Intent")) {
            String str[] = line.split(" ");
            for(String s : str) {
                if(s.contains("com.amazon"))
                    myL.add(s);
            }
        }
    }

    for(String s : myL) {
         System.out.println(s);
    }

} catch (FileNotFoundException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
}

stringfilepath=“res/textfile.txt”；
弦线；
List myL=new ArrayList（）；
试一试{
BufferedReader read=新的BufferedReader（新文件读取器（文件路径））；
而（（line=read.readLine（））！=null）{
if（line.contains（“恢复的活动”）| | line.contains（“开始：意图”））{
字符串str[]=line.split（“”）；
for（字符串s:str）{
如果（s.contains（“com.amazon”））
myL.add（s）；
}
}
}
用于（字符串s:myL）{
系统输出打印项次；
}
}catch（filenotfounde异常）{
e、 printStackTrace（）；
}捕获（IOE异常）{
e、 printStackTrace（）；
}

更新： 我只是再次阅读了你的帖子，并更新了我的解决方案。不知何故，我遗漏了应该删除包括“恢复活动”或“开始：意图”在内的行。

您可以尝试使用正则表达式

ActivityManager: (?:Starting: Intent.*?cmp=|Resumed Activity:\s*)(\S+)

您想要的子字符串将存储在组1中

看到了吗

要在Java中使用这个正则表达式，您必须避开所有反斜杠，所以它看起来应该是

ActivityManager: (?:Starting: Intent.*?cmp=|Resumed Activity:\\s*)(\\S+)

---

第一部分匹配“ActivityManager”中的字符串，直到要提取的部分，最后一部分匹配一系列非空白字符，并将其存储在组1中。

我已经使用类似的方法进行了匹配，但我正试图通过模式匹配找到更好的解决方案。这段代码有效，但效率不高。顺便说一句，我不知道它是否是com.amazon，它是可变的。这是否意味着您正在搜索任何活动的所有行，无论是恢复还是启动哪个活动？是的，我只想要活动名称，我从amazon发送了文件，它可以是任何活动。

ActivityManager: (?:Starting: Intent.*?cmp=|Resumed Activity:\\s*)(\\S+)