讀取文本文件並跳過空行直到到達EOF

Question

我正在嘗試讀取完整的文本csv文件;然而，如果在中間的空行的地方，這件事休息，我得到一個：

java.lang.RuntimeException: java.lang.StringIndexOutOfBoundsException 

我怎麼會去刪除/忽略空行，只要它不是在文件的結尾？

 file = new FileReader(fileName); 
     @SuppressWarnings("resource") 
     BufferedReader reader = new BufferedReader(file); 
     while ((line = reader.readLine()) != null) { 
        //do lots of stuff to sort the data into lists etc 
     } 
    } catch (Exception e) { 
     System.out.println("INPUT DATA WAS NOT FOUND, PLEASE PLACE FILE HERE: " + System.getProperty("user.dir")); 
     throw new RuntimeException(e); 
    } finally { 
     if (file != null) { 
      try { 
       file.close(); 
      } catch (IOException e) { 
       // Ignore issues during closing 
      } 
     } 
    } 

Answer 1

這是這部分是造成問題：

while ((line = reader.readLine()) != null) { 

     //do lots of stuff to sort the data into lists etc 
     // **** Something assumes line is not empty ******* 
    } 

要忽略空行，添加此檢查，以確保該行擁有的東西：

while ((line = reader.readLine()) != null) { 
    if(line.length() > 0) { 
     //do lots of stuff to sort the data into lists etc 
    }   
}