我正在尝试设置一个可以发送和接收文件的 java 程序。我知道这个网站上有类似的问题,但在阅读这些内容后我遇到了麻烦。我关注了这个视频:https ://www.youtube.com/watch?v=WeaB8pAGlDw&ab_channel=Thecodersbay它在他的视频中有效,我不确定我做错了什么。第一个 java 文件运行得很好,但是当我尝试运行第二个时,我得到了这个错误:Exception in thread "main" java.net.SocketException: Connection reset at java.net.SocketInputStream.read(Unknown Source) at java.net.SocketInputStream.read(Unknown Source) at fileSender.fileclient.main(fileclient.java:19)我尝试使用其他一些端口,但这并没有解决问题。这是我现在所拥有的:文件服务器文件:package fileSender;import java.io.*; import java.net.*; public class fileserver {private static ServerSocket s;private static FileInputStream fr;public static void main(String[] args) throws Exception{ s = new ServerSocket(1418); Socket sr = s.accept(); //accept the connection fr = new FileInputStream("C:\\Users\\Anon\\Desktop\\folder\\testfile.txt"); byte b[] = new byte[2002]; //before reading, a byte has to be declared. byte data includes the size of the file. if the size is unknown, use a random one I guess fr.read(b, 0, b.length); //the byte b, start reading the file at 0, and stop reading at the end of it. read from start to finish, and store it as b OutputStream os = sr.getOutputStream(); os.write(b, 0, b.length); //b variable will be sent with this. again, starts at 0, and ends at the length of the byte b }}这是客户端文件:package fileSender;import java.io.*; //the whole thingimport java.net.*; public class fileclient {private static Socket sr;private static FileOutputStream fr;public static void main(String[] args) throws Exception{ byte []b = new byte[2002]; //size from earlier. what the person gets sr = new Socket("localhost",1418); InputStream is = sr.getInputStream(); //capturing the stream fr = new FileOutputStream("C:\\Users\\Anon\\Desktop\\testfile.txt"); is.read(b, 0, b.length); //will capture the stream of "is". again, whole file, 0 to end fr.write(b, 0, b.length); //writes the whole content into a file }}我试图发表很多评论,以便我能够理解事情。提前致谢 :)
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拉莫斯之舞
TA贡献1820条经验 获得超10个赞
因此,Connection Reset
意味着套接字从另一端关闭。考虑到您的“服务器”在做什么,这是非常合乎逻辑的。
当客户端连接时,您的服务器正在接受连接,从文件中读取最多 2002 个字节,将其发送到客户端并终止应用程序。此时,套接字sr
将与应用程序的其余资源一起关闭。此时,仍在读取的客户端InputStream
将收到套接字不再有效的通知,并引发该异常。
您应该检查是否testfile.txt
写入成功。可能没问题,尽管我不会让服务器如此突然地断开连接。我会让客户端正常关闭,或者在不活动后使客户端连接超时,因为Connection Reset
在从 TCP 缓冲区读取所有数据之前,您可能会遇到该错误。(TCP 错误的通信速度往往更快。)
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