我编写了一个简单的 java 客户端来从我的 java web 服务器发送请求和接收数据。服务器能够处理持久连接，当我使用浏览器发送请求时一切正常，但是当我使用客户端发送请求时，它仅适用于非持久连接。当我使用我的 java 客户端发送请求时，它会接收从服务器请求的数据，然后冻结。我的java客户端代码：
public static void main(String[] args) throws UnknownHostException, IOException {
// TODO code application logic here
String sentence;
String modifiedSentence;
BufferedReader inFromUser = new BufferedReader(new InputStreamReader(System.in));
Socket clientSocket = new Socket("127.0.0.1", 6789);
DataOutputStream outToServer = new DataOutputStream(clientSocket.getOutputStream());
BufferedReader inFromServer = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
System.out.println("Enter the file name that you would like to request from Server:");
sentence = inFromUser.readLine();
System.out.println("would you like to have a persistent connection (yes/no):");
String sentence1 = inFromUser.readLine();
if(sentence1.equals("yes")){sentence1="Connection: keep-alive";}
else{sentence1="Connection: close";}
outToServer.writeBytes("GET /"+sentence + "\r\n");
outToServer.writeBytes(sentence1+"\r\n");
outToServer.writeBytes("\r\n");
while ((modifiedSentence=inFromServer.readLine()) != null)
{
System.out.println("FROM SERVER: " + modifiedSentence);
}
System.out.println("done");
clientSocket.close();
}