ZipOutputStream中报错System Closed

对于生成zip文件，一般在第二次putNextEntry时会报错：System closed，原因是一般的流都会自动调用close()方法，关闭流，所以在第二次调用putNextEntry时会因为流被关闭报错。有两种解决办法：

1、用OutputStreamWriter包装一下，并且重写close方法；

2、将流放入到ByteArrayOutputStream 内存中，这样就不会close了

ZipInputStream同理

用OutputStreamWriter包装：

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用OutputStreamWriter包装： Path path = Paths.get("target/output/jackson/Jackson.zip"); try {     Files.createDirectories(path.getParent()); } catch (IOException e) {     e.printStackTrace(); } try(         OutputStream out = new FileOutputStream(path.toFile());         ZipOutputStream zo = new ZipOutputStream(out);         ){     for (Map.Entry<String, Object> e: map.entrySet()) {         zo.putNextEntry(new ZipEntry(e.getKey()));         objectMapper.writeValue(new OutputStreamWriter(zo, "UTF-8"){             @Override             public void close() throws IOException {                 flush();             }         }, e.getValue());         System.out.println("生成成功："+e.getKey());     }     } catch (FileNotFoundException e) {     e.printStackTrace(); } catch (IOException e) {     e.printStackTrace(); }

用ByteArrayOutputStream 包装：

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Path path = Paths.get("target/output/jackson/Jackson.zip"); try {     Files.createDirectories(path.getParent()); } catch (IOException e) {     e.printStackTrace(); } try(         OutputStream out = new FileOutputStream(path.toFile());         ZipOutputStream zo = new ZipOutputStream(out); ){     for (Map.Entry<String, Object> e: map.entrySet()) {         ByteArrayOutputStream baos = new ByteArrayOutputStream();         zo.putNextEntry(new ZipEntry(e.getKey()));         objectMapper.writeValue(baos, e.getValue());         baos.writeTo(zo);         baos.close();         System.out.println("生成成功："+e.getKey());     }     } catch (FileNotFoundException e) {     e.printStackTrace(); } catch (IOException e) {     e.printStackTrace(); }