BufferedReader字符串内存泄漏？

我正在制作一个AP计算机科学项目，我们主要是在制作一个图书馆，您可以在其中添加客户和书籍，向客户查看书籍等，我们必须能够读取/写入CSV 。我遇到一些麻烦，这个代码（这只是其中的一部分，而且我敢肯定它的其余部分作品，整个事情是接近600线，总数）：BufferedReader字符串内存泄漏？

public void readForBook() {  
    try{ 
     BufferedReader CSVFile = new BufferedReader(new FileReader("book.csv")); 

     String dataRow = CSVFile.readLine(); 
     dataRow = CSVFile.readLine(); 
     while (dataRow != null){ 
      String[] dataArray = dataRow.split(", "); 
      int tbuid = Integer.parseInt(dataArray[0]); 
      String t_title = dataArray[1]; 
      String tfirst = dataArray[2]; 
      String tlast = dataArray[3]; 
      String tdescription = dataArray[4]; 
      String tisbn = dataArray[5]; 
      String tdpurchase = dataArray[6]; 
      String tcopyrightyear = dataArray[7]; 
      double tcost = Double.parseDouble(dataArray[8]); 
      dataRow = CSVFile.readLine(); 
      int crYear = Integer.parseInt(tcopyrightyear); 

      Book tempBook = new Book(tbuid, t_title, tfirst, tlast, tdescription, tisbn, tdpurchase, crYear, tcost); 
      BookList.add(tempBook); 
     } 
     CSVFile.close(); 
    } catch(IOException fnfe) { 
     System.out.println(fnfe.getMessage()); 
    } 
} 
public void readForCustomer(){  
    try{ 
     BufferedReader CSVFile = new BufferedReader(new FileReader("customer.csv")); 

     String customerRow = CSVFile.readLine(); 
     customerRow = CSVFile.readLine(); 
     while (customerRow != null){ 
      String[] customerCSVArray = customerRow.split(", "); 
      int tcuid = Integer.parseInt(customerCSVArray[0]); 

      String temp_zip = customerCSVArray[7]; 
      int tzip = Integer.parseInt(temp_zip); 
      String temp_balance = customerCSVArray[8]; 
      double tbalance = Double.parseDouble(temp_balance); 


      Customer tempCustomer = new Customer(tcuid, customerCSVArray[1], customerCSVArray[2], customerCSVArray[3], customerCSVArray[4], customerCSVArray[5], customerCSVArray[6], tzip, tbalance, customerCSVArray[9]); 
      CustomerList.add(tempCustomer); 
     } 
     CSVFile.close(); 
    } catch(IOException fnfe) { 
     System.out.println(fnfe.getMessage()); 
    } 
}

这里的问题：第一个，readForBook，完美的作品，然而，readForCustomer是具有“异常线程‘主要的一个’java.lang.OutOfMemoryError：Java堆空间”的错误：

Exception in thread "main" java.lang.OutOfMemoryError: Java heap space 
at java.nio.HeapByteBuffer.<init>(HeapByteBuffer.java:39) 
at java.nio.ByteBuffer.allocate(ByteBuffer.java:312) 
at sun.nio.cs.StreamDecoder.<init>(StreamDecoder.java:231) 
at sun.nio.cs.StreamDecoder.<init>(StreamDecoder.java:211) 
at sun.nio.cs.StreamDecoder.forInputStreamReader(StreamDecoder.java:50) 
at java.io.InputStreamReader.<init>(InputStreamReader.java:57) 
at java.util.Scanner.<init>(Scanner.java:590) 
at Customer.<init>(Customer.java:6) 
at Library.readForCustomer(Library.java:219) 
at Library.importFromTextFile(Library.java:170) 
at Library.mainMenu(Library.java:149) 
at Library.<init>(Library.java:17) 
at runIt.main(runIt.java:3)

我跑了堆转储通过VisualVM，它是说有大量的字符串实例。

来源

2013-04-11 Jack Sampson

在您的while循环中，您必须始终致电CSV.readLine()。您只需在循环之外调用，这意味着您将以无限循环结束并可能完整堆。

来源

2013-04-11 13:42:35

改变循环到：

while ((customerRow = CSVFile.readLine()) != null){ 
    //... 
    }

并移除上面的行：dataRow = CSVFile.readLine();

来源

2013-04-11 13:45:15 CloudyMarble

BufferedReader字符串内存泄漏？

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