java.lang.IllegalStateException: Write attempted after request finished

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