java.io.IOException: Stream closed解决办法

青旅半醒 2023-06-13 11:23 14阅读 0赞

1.出现这个bug的大体逻辑代码如下:

private static void findMovieId() throws Exception {
             File resultFile = new File("C:\\2016.txt");
             
             OutputStreamWriter outputStreamWriter = new OutputStreamWriter(new FileOutputStream(resultFile));
             BufferedWriter bufferWriter = new BufferedWriter(outputStreamWriter);
             
             outputStreamWriter.close();
             bufferWriter.close();
         }

2.报错大体信息如下:

![format_png][]

3.解决方式:

原因:

bufferwriter流使用了outputStreamWriter流，所以关闭bufferwriter流也会关闭outputStreamWriter流； 但是下面有使用outputStreamWriter流，相当于使用一个关闭了的流。解决办法是换下位置就可以了.

代码改为:

private static void findMovieId() throws Exception {
            File resultFile = new File("C:\\2016.txt");
            
            OutputStreamWriter outputStreamWriter = new OutputStreamWriter(new FileOutputStream(resultFile));
            BufferedWriter bufferWriter = new BufferedWriter(outputStreamWriter);
    
            bufferWriter.close();        
            outputStreamWriter.close();
        }

同理:FileWriter和BufferWriter之间的关系:

FileWriter fileWriter=new FileWriter(file);
                BufferWriter bufferWriter=new BufferedWriter(fileWriter);

这里关闭流要从大到小关闭,BufferWriter包装了FileWriter,BufferWriter"大",FileWriter"小"  
FileWriter.close();   
BufferWriter.close();  
这样的顺序就是不行，FileWriter流自己关闭了。然后BufferWriter流又把FileWriter流关闭一次就会报错java.io.IOException: Stream closed.

[format_png]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWFnZXMyMDE3LmNuYmxvZ3MuY29tL2Jsb2cvNjEwMjM4LzIwMTcwOC82MTAyMzgtMjAxNzA4MTgxNDUzMjcxNjItNTM2ODc1MjkzLnBuZw?x-oss-process=image/format,png