Saxon XML驗證：驗證失敗時無法刪除XML文件

Question

幾周前，我在此處發佈了issue。現在我遇到了另一種情況的類似問題。我創建了一個java上傳，我想檢查一個XML文件是否格式正確。檢查後，我想刪除它。但如果轉換失敗，我不能刪除該文件。 我創建了一個更簡單的例子，在我的本地計算機上運行它，我遇到了同樣的問題。請參閱下面的我的源代碼。您可以輕鬆地複製並粘貼它並自行嘗試。

我發現了一個錯誤，可能是我幾周前報告的錯誤，或者我錯過了代碼中的某些東西？我使用了Saxon 9.4HE。

public class TestClass 
{ 
public static void main (String[] args) throws Exception 
{ 
    boolean isWellFormed = isXMLwellformed(new File("work/file.xml")); 

    if(isWellFormed) System.out.println("File is well formed"); 
    else 
    { 
     System.out.println("File is not well formed"); 
    } 
    FileUtils.deleteDirectory(new File("work")); 
} 

private static boolean isXMLwellformed(File file) 
{ 
    boolean isWellformed = true; 
    TransformerFactory factory = TransformerFactory.newInstance(); 
    StreamSource source = new StreamSource(file); 
    try 
    { 
     Transformer trans = factory.newTransformer(); 
     SAXResult sink = new SAXResult(new DefaultHandler()); 
     trans.transform(source, sink); 
    } 
    catch (TransformerException err) 
    { 
     System.err.println("Validation failed: " + err.getMessage()); 
     isWellformed = false; 
    } 
    return isWellformed; 
} 
} 

Answer 1

現在，我找到了一個可行的解決方案。如果我自己創建FileReader並將其關閉在catch塊中，它就可以工作。但不應該自動關閉？

private static boolean isXMLwellformed(File file) throws IOException 
    { 
    boolean isWellformed = true; 
    BufferedReader br = new BufferedReader(new FileReader(file)); 
    TransformerFactory factory = TransformerFactory.newInstance(); 
    StreamSource source = new StreamSource(br); 
    try 
    { 
     Transformer trans = factory.newTransformer(); 
     SAXResult sink = new SAXResult(new DefaultHandler()); 
     trans.transform(source, sink); 
    } 
    catch (TransformerException err) 
    { 
     System.err.println("Validation failed: " + err.getMessage()); 
     br.close(); 
     isWellformed = false; 
    } 
    return isWellformed; 
    }