如何比较两个字符串与忽略目标字符串的某些子字符串

时间：2017-10-27 06:43:17

标签： java string

假设我有两个字符串，如

String 1: You have transferred balance 1000. Transaction ID:12345670
String 2: You have transferred balance 1000. Transaction ID:@ignore

我想比较第二个字符串和第一个字符串，忽略动态事务id部分和某种关键字（例如： - @ignore）。因此，在将第二个字符串与第一个字符串进行比较时，如果它在目标字符串的位置找到关键字，它将忽略源字符串中的特定部分并返回true。

这可以用Java完成，还是有可用于此类操作的java库？

5 个答案:

答案 0 :(得分：2)

尝试下面一个

        final String s1 ="You have transferred balance 1000, Transaction ID:12345670";
        final String s2 = "You have transferred balance 1000, Transaction ID:@ignore";

        final String[] s1Split = s1.split(":");
        final String[] s2Split = s1.split(":");

        System.out.println(s1Split[0].equals(s2Split[0]));

答案 1 :(得分：0)

使用正则表达式而不是第二个字符串。这可以通过String.matches：

完成 
String string = "You have transferred balance 1000. Transaction ID:12345670";
if (string.matches(
  "You have transferred balance 1000. Transaction ID:\\d+")) { ...

答案 2 :(得分：0)

将您的关键字@ignore替换为regEx，然后进行比较。

因此，您可以将@ignore放在string2中的任何位置，以便在比较时忽略string1的任何部分。

前：

String str2 =您已转移 @ignore 1000.交易ID： @ignore “”

  String str1 = new String("You have transferred balance 1000. Transaction ID:12345670");
  String str2 = new String("You have transferred balance 1000. Transaction ID:@ignore");

  String regEx =  str2.replace("@ignore", "(.*)");

  System.out.print("Result :" );
  System.out.println(str1.matches(regEx));

答案 3 :(得分：0)

只需将模板转换为正则表达式模式。

String s1 ="You have transferred balance 1000, Transaction ID:12345670";
String s2 = "You have transferred balance 1000, Transaction ID:@ignore";

System.out.println(matches(s1, s2));

boolean matches(String text, String template) {
    StringBuilder sb = new StringBuilder("(?s)"); // Dot also for line breaks.
    for (int i = 0; i < template.length(); ++i) {
        int j = template.indexOf("@ignore", i);
        if (j == -1) {
            // Escape (quote) the regex special chars in as-is text.
            sb.append(Pattern.quote(template.substring(i));
            break;
        }
        sb.append(Pattern.quote(template.substring(i, j));
        j += "@ignore".length();
        sb.append(".*?"); // Shortest sequence.
    }
    return text.matches(sb.toString());
}

介意：模式匹配整个文本，因此“查找”应该以{{1​​}}完成。

答案 4 :(得分：0)

如果@ignore语句不在最后，您可以拆分包含它的String，并检查第一个String是否以相应的部分开始和结束。 

{Microsoft.WindowsAzure.MobileServices.MobileServiceInvalidOperationException: The request could not be completed.  (Internal Server Error)
  at Microsoft.WindowsAzure.MobileServices.MobileServiceHttpClient+<ThrowInvalidResponse>d__24.MoveNext () [0x001ec] in <42e24ce875d34485ad11c4f8aebb904a>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0003e] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.GetResult () [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at Microsoft.WindowsAzure.MobileServices.MobileServiceHttpClient+<SendRequestAsync>d__26.MoveNext () [0x000fc] in <42e24ce875d34485ad11c4f8aebb904a>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0003e] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter`1[TResult].GetResult () [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at Microsoft.WindowsAzure.MobileServices.MobileServiceHttpClient+<RequestAsync>d__18.MoveNext () [0x000fa] in <42e24ce875d34485ad11c4f8aebb904a>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0003e] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter`1[TResult].GetResult () [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at Microsoft.WindowsAzure.MobileServices.MobileServiceTable+<>c__DisplayClass26_0+<<UpdateAsync>b__0>d.MoveNext () [0x000d4] in <42e24ce875d34485ad11c4f8aebb904a>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0003e] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter`1[TResult].GetResult () [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at Microsoft.WindowsAzure.MobileServices.MobileServiceTable+<TransformHttpException>d__43.MoveNext () [0x000bb] in <42e24ce875d34485ad11c4f8aebb904a>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0003e] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter`1[TResult].GetResult () [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at Microsoft.WindowsAzure.MobileServices.MobileServiceTable+<UpdateAsync>d__26.MoveNext () [0x00121] in <42e24ce875d34485ad11c4f8aebb904a>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0003e] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter`1[TResult].GetResult () [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at Microsoft.WindowsAzure.MobileServices.MobileServiceTable`1+<TransformHttpException>d__31[T].MoveNext () [0x000a0] in <42e24ce875d34485ad11c4f8aebb904a>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0003e] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter`1[TResult].GetResult () [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at Microsoft.WindowsAzure.MobileServices.MobileServiceTable`1+<UpdateAsync>d__8[T].MoveNext () [0x000e2] in <42e24ce875d34485ad11c4f8aebb904a>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0003e] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.GetResult () [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at Microsoft.WindowsAzure.MobileServices.MobileServiceTable`1+<UpdateAsync>d__7[T].MoveNext () [0x00067] in <42e24ce875d34485ad11c4f8aebb904a>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0003e] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.GetResult () [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at UXD.Services.PersonService+<SavePersonAsync>d__9.MoveNext () [0x000a4] in c:\RK\Services\PersonService.cs:268 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0003e] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.GetResult () [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at UXD.ViewModel.PersonViewModel+<ExecuteAddPersonCommandAsync>d__19.MoveNext () [0x00040] in c:\RK\ViewModel\PersonViewModel.cs:106 }

这不包括存在多个@ignore令牌的情况，但是你必须在第一个字符串中替换@ignore的相应部分，因此需要更多关于它的信息，例如：开始和结束的长度或标记。

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