追加字符串基於一個特定的字符串位置的文件

Question

我有黃瓜的特徵文件（test.feature）

Feature: annotation 
Background: 
User navigates to Facebook 
Given I am on Facebook login page 

Scenario: When I enter username as "TOM" 
And I enter password as "JERRY" 
Then Login should fail 

Scenario: When I enter username as "TOM" 
And I enter password as "JERRY" 
Then Login should fail 
But Relogin option should be available 

，需要通過添加Java代碼標籤（遞增順序）。像

Feature: annotation 
Background: 
User navigates to Facebook 
Given I am on Facebook login page 
@tag1 
Scenario: When I enter username as "TOM" 
And I enter password as "JERRY" 
Then Login should fail 
@tag2 
Scenario: When I enter username as "TOM" 
And I enter password as "JERRY" 
Then Login should fail 
But Relogin option should be available 

標籤將以遞增順序添加。是否有任何可能的方式在字符串上方添加@tag'場景：'

如何使用java代碼實現。任何解決方案。

我試着用以下code.But無法procced追加到字符串的正上方位置「場景：」

int count =0; 

      BufferedReader bufferedReader = new BufferedReader(new FileReader("test.feature")); 
      FileWriter writer = new FileWriter("test.feature"); 
      while ((line = bufferedReader.readLine()) != null) { 
       if (line.trim().startsWith("Scenario")) { 
        count++; 
        writer.write("tag"+count); 

       } 
      } 
      //Final Dump data here 
      writer.close();   
      bufferedReader.close(); 

Answer 1

當然，你要打印的行以及編輯加入新行

if (line.trim().startsWith("Scenario")) { 
    count++; 
    writer.write("@tag"+count); 
    writer.write ("\n"); 
} 
writer.write (line); 
writer.write ("\n");