MessagePack Java Jackson 在不關閉輸入流（input stream）的情況下

com.fasterxml.jackson.databind.ObjectMapper?在讀取輸入流變量的時候默認的將會關閉輸入流。

如果你不希望關閉輸入流，你可以設置?JsonParser.Feature.AUTO_CLOSE_SOURCE?參數為 false。

本測試方法，可以在?https://github.com/cwiki-us-demo/serialize-deserialize-demo-java/blob/master/src/test/java/com/insight/demo/serialize/MessagePackSerializer.java?中找到。

?

/**
?*?Serialization?Not?Close?input?stream
?*/
@Test
public?void?testMessagePackSerializationNotCloseInputStream()?{
????logger.debug("testMessagePackSerializationNotCloseInputStream");

????try?{
????????File?tempFile?=?File.createTempFile("messagepack-",?"-cwiki.us");

????????MessagePacker?packer?=?MessagePack.newDefaultPacker(new?FileOutputStream(tempFile));
????????packer.packInt(42);
????????packer.packString("Hello");
????????packer.close();

????????FileInputStream?in?=?new?FileInputStream(tempFile);
????????ObjectMapper?objectMapper?=?new?ObjectMapper(new?MessagePackFactory());
????????objectMapper.configure(JsonParser.Feature.AUTO_CLOSE_SOURCE,?false);
????????System.out.println(objectMapper.readValue(in,?Integer.class));
????????System.out.println(objectMapper.readValue(in,?String.class));
????????in.close();

????????tempFile.deleteOnExit();
????}?catch?(IOException?ex)?{
????????logger.error("Serialize?Error",?ex);
????}
}

?

https://www.cwiki.us/display/Serialization/MessagePack+Jackson+Dataformat