ObjectInputStream 与 ObjectOutputStream

最新推荐文章于 2021-01-03 14:23:14 发布

转载最新推荐文章于 2021-01-03 14:23:14 发布 · 808 阅读

本文详细介绍了在使用Socket通信时，确保Server端与Client端ObjectInputStream与ObjectOutputStream生成顺序的重要性。遵循正确的顺序可以避免阻塞现象，确保数据传输的顺利进行。

用Socket通信的时候如果要用到ObjectInputStream 与 ObjectOutputStream的话，要确保Server端与Client端ObjectInputStream 与 ObjectOutputStream生成的顺序。

在Server（Client）端生成一个ObjectInputStream流时必须确保在Client（Server）端生成一个ObjectOutputStream流。

根据上述原则，合法的可能生成顺序有

1、

Server Client

ObjectInputStream ObjectOutputStream

ObjectOutputStream ObjectInputStream

2、

Server Client

ObjectOutputStream ObjectInputStream

ObjectInputStream ObjectOutputStream

其他情况都会引起阻塞。

引用：

           public ObjectInputStream(InputStream in)
 throws IOException

Creates an ObjectInputStream that reads from the specified InputStream. A serialization stream header is read from the stream and verified. This constructor will block until the corresponding ObjectOutputStream has written and flushed the header.

If a security manager is installed, this constructor will check for the "enableSubclassImplementation" SerializablePermission when invoked directly or indirectly by the constructor of a subclass which overrides the ObjectInputStream.readFields or ObjectInputStream.readUnshared methods.