Java 从外部浏览器调用时的HttpServletResponse输出终止
我有一个在ApacheTomcat（8.0.21.0）下运行的Java web应用程序。它的功能是监视各种外部进程，并在浏览器中显示警报和定期更新的状态。主HTTP请求处理程序非常简单Java 从外部浏览器调用时的HttpServletResponse输出终止,java,servlets,tcp,tomcat8,Java,Servlets,Tcp,Tomcat8,我有一个在ApacheTomcat（8.0.21.0）下运行的Java web应用程序。它的功能是监视各种外部进程，并在浏览器中显示警报和定期更新的状态。主HTTP请求处理程序非常简单 public class MyApplication extends HttpServlet { . . . public void doPost (HttpServletRequest request, HttpServletResponse response) throws IOException,
public class MyApplication extends HttpServlet
{
.
.
.
public void doPost (HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
{
processRequest (request, response);
}
public void doGet (HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
{
processRequest (request, response);
}
private static void processRequest (HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
{
String strOption = request.getParameter ("option");
int nOption = Integer.parseInt (strOption);
response.setContentType ("text/html");
PrintWriter out = response.getWriter ();
outputPage (out, nOption);
}
private void outputPage (PrintWriter out, int nOption)
{
out.println ("<!DOCTYPE html>");
out.println ("<html>");
out.println ("<head>");
switch (nOption)
{
// title, style and <body> content depend on option passed in request
.
.
.
}
out.println ("</body>);
out.println ("</html>");
}
}
public class MyTCPconnection extends Thread
{
public Socket clientSocket; // socket created by listener
private String url = "[local host address and servlet name]";
.
.
.
public void run ()
{
int RC = 400; // default value = "Bad Request"
try
{
// get bytes from remote process
int receiveBufferSize = clientSocket.getReceiveBufferSize ();
byte[] receiveBuffer = new byte[receiveBufferSize];
int bytesRead = TCPreceive (clientSocket, receiveBuffer); // not shown
if (bytesRead != -1 && bytesRead != 0)
{
String strOption = getOption (receiveBuffer); // not shown
}
HttpPost httpPost = new HttpPost (url);
httpPost.setHeader ("Accept", "text/html,application/xhtml+xml,application/xml");
httpPost.setHeader ("Content-Type", "application/x-www-form-urlencoded");
List<NameValuePair> requestParams = new ArrayList<NameValuePair>();
reqestParams.add (new BasicNameValuePair ("option", value));
CloseableHttpClient httpClient = HttpClients.createDefault ();
CloseableHttpResponse response = httpClient.execute (httpPost);
RC = response.getStatusLine().getStatusCode();
String responseBody = EntityUtils.toString (response.getEntity ());
system.out.println (responseBody);
}
catch (UnknownHostException e)
{
RC = 404;
}
catch (IOException e)
{
RC = 400;
}
TCPsend (clientSocket, RC); // reply to remote process, not shown
}
}
公共类MyTCPconnection扩展线程
{
公共套接字clientSocket；//侦听器创建的套接字
私有字符串url=“[本地主机地址和servlet名称]”；
.
.
.
公开作废运行（）
{
int RC=400；//默认值=“错误请求”
尝试
{
//从远程进程获取字节
int receiveBufferSize=clientSocket.getReceiveBufferSize（）；
字节[]接收缓冲区=新字节[receiveBufferSize]；
int bytesRead=tcprective（clientSocket，receiveBuffer）；//未显示
if（bytesRead！=-1&&bytesRead！=0）
{
String strOption=getOption（receiveBuffer）；//未显示
}
HttpPost HttpPost=新的HttpPost（url）；
httpPost.setHeader（“接受”，“text/html，application/xhtml+xml，application/xml”）；
httpPost.setHeader（“内容类型”、“应用程序/x-www-form-urlencoded”）；
List requestParams=new ArrayList（）；
RequestParams.add（新的BasicNameValuePair（“选项”，值））；
CloseableHttpClient-httpClient=HttpClients.createDefault（）；
CloseableHttpResponse response=httpClient.execute（httpPost）；
RC=response.getStatusLine（）.getStatusCode（）；
字符串responseBody=EntityUtils.toString（response.getEntity（））；
system.out.println（响应库）；
}
捕获（未知后异常e）
{
RC=404；
}
捕获（IOE异常）
{
RC=400；
}
TCPsend（clientSocket，RC）；//回复远程进程，未显示
}
}
如果有任何提示或hlp，我们将不胜感激。为什么您认为编程HTTP应该在web浏览器中显示一些结果？在这种情况下，您的另一个应用程序部分是HTTP客户端，发送请求并获得响应。不涉及浏览器。如果我理解正确：当您的servlet
MyApplication