java.lang.IllegalStateException: Write attempted after request finished

最新推荐文章于 2018-08-17 19:56:23 发布

原创最新推荐文章于 2018-08-17 19:56:23 发布 · 887 阅读

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#socket #output #dos #input

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本文探讨了HTTP连接的正确使用方法，强调了在进行读写操作时的顺序，以及如何在发送请求后获取响应代码。同时，文章还讨论了在发送数据后检查响应状态并关闭连接的重要性。

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java.lang.IllegalStateException: Write attempted after request finished
对于http连接，仅能进行一次读写，并且要先写入完毕才能打开输入流进行读操作

int responseCode = conn.getResponseCode();

DataOutputStream dos = conn.openDataOutputStream();
dos.writeUTF(name);
dos.writeUTF(PassWrod);
dos.flush();
这段代码中
把 int responseCode = conn.getResponseCode();
放在后面，即先写完再请求返回数据

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1. How about actually closing a connection before opening a new one?
2. It/'s http, not a socket, you can/'t keep sending and receiving data. It/'a a question answer gave. After the answer, you cannot state another question without a reconnect (or use http 1.1, but that should be transparantly). Even though you set the keep-alive request propery
3. a post works in this oder:

- init your headers
- open output steam
- write data
- check response code
- open input stream
- read data
- close all